DOCSLIB.ORG

How to Cite Complete Issue More Information About This

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

Revista de Biología Tropical ISSN: 0034-7744 ISSN: 2215-2075 Universidad de Costa Rica Velázquez, María-S.; Fabisik, Juan-C.; Barrera, Marcelo; Allegrucci, Natalia; Valdés, Fabricio-E.; Abarca, Camila-L.; Cabello, Marta Diversity and abundance of arbuscular mycorrhizal fungi (Glomeromycota) associated with Ilex paraguarensis in Northeastern Argentina Revista de Biología Tropical, vol. 68, no. 4, 2020, October-, pp. 1231-1240 Universidad de Costa Rica DOI: https://doi.org/10.15517/RBT.V68I4.41543 Available in: https://www.redalyc.org/articulo.oa?id=44966323018 How to cite Complete issue Scientific Information System Redalyc More information about this article Network of Scientific Journals from Latin America and the Caribbean, Spain and Journal's webpage in redalyc.org Portugal Project academic non-profit, developed under the open access initiative ISSN Printed: 0034-7744 ISSN digital: 2215-2075 Diversity and abundance of arbuscular mycorrhizal fungi (Glomeromycota) associated with Ilex paraguarensis in Northeastern Argentina María S. Velázquez1*, Juan C. Fabisik2†, Marcelo Barrera3, Natalia Allegrucci1, Fabricio E. Valdés1,4, Camila L. Abarca1 & Marta Cabello1,4 1. Instituto de Botánica Carlos Spegazzini, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Anexo 1, Avenida 60 y 122 S/N, La Plata, Argentina; [email protected], [email protected], [email protected] 2. Instituto Nacional de Tecnología Agropecuaria, Agencia de Extensión Rural Virasoro, Calle Gobernador Ferre N° 2842, Gobernador Virasoro, Corrientes, Argentina 3. Laboratorio de Investigación en Sistemas Ecológicos y Ambientales, Facultad de Ciencias Agrarias y Forestales, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata. Calle 113 N°469, La Plata, Argentina; [email protected] 4. Comisión de Investigaciones Científicas, Calle 526 entre 10 y 11, La Plata, Argentina; [email protected], [email protected] * Correspondence Received 25-IV-2020. Corrected 18-VIII-2020. Accepted 26-VIII-2020. ABSTRACT. Introduction: The expansion and intensification of agriculture causes profound changes at a global scale, which generates a strong impact on crop productivity and consequently, a decrease in the biodiver- sity associated. Ilex paraguariensis, known as yerba mate, is a native species from South America and it has been introduced in the world market (e.g. Middle East, Europe, and United States) due to its multiple nutritional ben- efits and antioxidant properties. The association of plants of I. paraguarensis with arbuscular mycorrhizal fungi (AMF), especially under field conditions, has been scarcely reported so far. Objective: The aim of this work was to assess the species composition, richness, spore density and diversity of Glomeromycota communities of yerba mate under different crop and natural conditions, seasonally over a 2-year period. Methods: Soil samples were extracted in winter and summer from five productive sites (situations 1-5), with contrasting crop conditions with regard to historical management, as a reference situation (situation 6). Spores were identified following morphological criteria. Results: Acaulosporaceae and Glomeraceae presented the highest spore densities in all sampling sites/ seasons/years. The lowest spore density and diversity index was recorded in 2014, when rainfall was higher than in 2013. Discussion: We reported Acaulospora capsicula detected by morphological analysis, for the first time in South America. Differences between years could be attributed to rainfall. This study contrib- utes to the knowledge of the dynamics and factors that influence the structure of AMF communities over time. This information would be valuable to generate conservation strategies for this group of microorganisms, which are key to the sustainable development of yerba mate cultivation systems. Key words: arbuscular fungi; Glomeromycota communities; yerba mate; spore density; species richness. Velázquez, M.S., Fabisik, J.C., Barrera, M. Allegrucci, N., Valdés, F.E., Abarca, C.L., & Cabello, M. (2020). Diversity and abundance of arbuscular mycorrhizal fungi (Glomeromycota) associated with Ilex paraguarensis in Northeastern Argentina. Revista de Biología Tropical, 68(4), 1231-1240. The expansion and intensification of agri- productivity and consequently, a decrease in culture causes profound changes at a global the biodiversity associated (De la Fuente & scale, including the degradation of agricultural Suárez, 2008). The productivity of Ilex para- soils, which generates a strong impact on crop guariensis St Hil. (Aquifoliaceae), popularly Rev. Biol. Trop. (Int. J. Trop. Biol.) • Vol. 68(4): 1231-1240, December 2020 1231 known as “yerba mate”, is severely affected changes in land use can affect the spore density by soil degradation (Bergotini et al., 2017). of AMF, and the species richness and diversity This species is native to Argentina, Brazil, of their communities. Besides soil disturbance, Paraguay and Uruguay in South America. It intrinsic factors related to AMF life strategies, has been introduced in the world market (e.g. host physiology and environmental conditions Middle East, Europe, and United States) due to can also modify their sporulation patterns. Gai, its multiple nutritional benefits and antioxidant Feng, Cai, Christie, and Li (2006) reported that properties (Heck & De Mejia, 2007). the AMF sporulation is reduced under drought It is essential to preserve the physical, conditions, whereas Shi et al. (2006) consider chemical and biological soil properties in an that their sporulation does not follow a predict- optimum state for their agricultural sustain- able pattern. ability. Plants rely on their interaction with a In Argentina, more than 60 % of the sur- wide range of soil microorganisms for growth face cultivated with yerba mate has serious and survival. The microbial interactions and problems of soil degradation due to inadequate the relationship with plant growth responses agricultural practices maintained over time. and nutrition in the rhizosphere have been Their recoveries demand not only the applica- widely studied (Larsen, Jaramillo-López, tion of already developed technologies, but Nájera-Rincon, & González-Esquivel, 2015). also the advance in research and innovations of The arbuscular mycorrhizal fungi (AMF) (Phy- existing tools. In this sense, AMF would play lum Glomeromycota) (Schüßler, Schwarzott, an important role. For this reason, it is neces- & Walker, 2001) are one of the rhizosphere sary to know the composition of Glomero- microorganisms symbiotically associated with mycota communities and identify the factors plants, which promote key ecosystem services that can affect their structure and dynamics. related to soil fertility, plant health, and nutri- The aim of this work was to assess the spe- tion (Gianinazzi et al., 2010). cies composition, richness, spore density and The association of plants of I. paragua- diversity of Glomeromycota communities of I. rensis with AMF, especially under field con- paraguarensis under different crop and natural ditions, has been scarcely reported so far. conditions, seasonally over a 2-year period. Andrade, Queiroz, Hermes, and Oliveira (2000) registered the presence of mycorrhi- MATERIALS AND METHODS zal colonization in roots of this species in Santa Catarina (Brazil) and Bergottini et al., Study area and Sampling sites: This (2017) detected the presence of AMF with high study was carried out in the provinces of Corri- throughput sequencing of its root-associated entes and Misiones, Northeastern Argentina. In microbiome. In addition, Velázquez, Fabisik, this region, the soils are typical Kandihumultes Abarca, Allegrucci, and Cabello (2018) studied of the Ultisol Order, and the climate is clas- the arbuscular mycorrhizal colonization in I. sified as humid subtropical, according to the paraguayensis plants growing under different Köppen classification. Samples were collected crop conditions and in natural environments. from five productive sites of I. paraguarensis However, so far there are few data available on in Corrientes, with contrasting crop situations the species composition of AMF communities with regard to historical management. As a ref- under field conditions. erence situation (situation 6), we used an area Numerous edaphic factors, such as chang- located in Misiones, with native trees of this es in soil pH, humidity, and availability of species that grow spontaneously in the under- nutrients, anthropogenic disturbances and sea- growth forest. The chemical characterization of sonality affect the structure and dynamics of the sampling sites is found in Velázquez et al. Glomeromycota communities (Smith & Read, (2018). The sampling sites corresponded to the 2008). Jefwa et al. (2012) demonstrated that following situations: i) Situation 1 (Y28) was 1232 Rev. Biol. Trop. (Int. J. Trop. Biol.) • Vol. 68(4): 1231-1240, December 2020 implanted in 1928, with a density of 450 plants/ constituted the repetitions. Each transect was ha, there is no fertilizer application and there separated from the other by 10 plantation lines. is continuous weed control by harrow disc. At each transect, we collected a composite An intensive harvest is carried out at this site sample that consisted of 5-6 subsamples of and the soil showed extreme deterioration; (ii) rhizosphere soil. In the case of situation 6 Situation 2 (Y24) is the oldest crop, implanted (NAT), the distance between repetitions was in 1920, with a density
Recommended publications
  • The Obligate Endobacteria of Arbuscular Mycorrhizal Fungi Are Ancient Heritable Components Related to the Mollicutes

    The Obligate Endobacteria of Arbuscular Mycorrhizal Fungi Are Ancient Heritable Components Related to the Mollicutes

    The ISME Journal (2010) 4, 862–871 & 2010 International Society for Microbial Ecology All rights reserved 1751-7362/10 $32.00 www.nature.com/ismej ORIGINAL ARTICLE The obligate endobacteria of arbuscular mycorrhizal fungi are ancient heritable components related to the Mollicutes Maria Naumann1,2, Arthur Schu¨ ler2 and Paola Bonfante1 1Department of Plant Biology, University of Turin and IPP-CNR, Turin, Italy and 2Department of Biology, Inst. Genetics, University of Munich (LMU), Planegg-Martinsried, Germany Arbuscular mycorrhizal fungi (AMF) have been symbionts of land plants for at least 450 Myr. It is known that some AMF host in their cytoplasm Gram-positive endobacteria called bacterium-like organisms (BLOs), of unknown phylogenetic origin. In this study, an extensive inventory of 28 cultured AMF, from diverse evolutionary lineages and four continents, indicated that most of the AMF species investigated possess BLOs. Analyzing the 16S ribosomal DNA (rDNA) as a phylogenetic marker revealed that BLO sequences from divergent lineages all clustered in a well- supported monophyletic clade. Unexpectedly, the cell-walled BLOs were shown to likely represent a sister clade of the Mycoplasmatales and Entomoplasmatales, within the Mollicutes, whose members are lacking cell walls and show symbiotic or parasitic lifestyles. Perhaps BLOs maintained the Gram-positive trait whereas the sister groups lost it. The intracellular location of BLOs was revealed by fluorescent in situ hybridization (FISH), and confirmed by pyrosequencing. BLO DNA could only be amplified from AMF spores and not from spore washings. As highly divergent BLO sequences were found within individual fungal spores, amplicon libraries derived from Glomus etunicatum isolates from different geographic regions were pyrosequenced; they revealed distinct sequence compositions in different isolates.
  • Diversiteit En Functie Van Arbusculaire Mycorrhiza Van Vicia Faba in De Tropische Hooglanden Van Ethiopië

    Diversiteit En Functie Van Arbusculaire Mycorrhiza Van Vicia Faba in De Tropische Hooglanden Van Ethiopië

    Faculteit Bio-ingenieurswetenschappen Academiejaar 2015 – 2016 Diversiteit en functie van arbusculaire mycorrhiza van Vicia faba in de tropische hooglanden van Ethiopië Reindert Devlamynck Promotor: Prof. dr. ir. Pascal Boeckx Copromotor: Dr. Olivier Honnay Tutor: Dr. Amsalu Nebiyu Masterproef voorgedragen tot het behalen van de graad van Master in de bio-ingenieurswetenschappen: Landbouwkunde English translation of the title: Diversity and function of arbuscular Mycorrhiza of Vicia Faba in the tropical highlands of Ethiopia Acknowledgements Ik ben iedereen dankbaar voor hun hulp en medeleven. Toch wil ik van de gelegenheid gebruik maken om één iemand speciaal te bedanken. Papa, bedankt voor de 22 prachtige jaren en voor je onvoorwaardelijke steun. Bedankt om je genen, normen en waarden door te geven aan mij. Wie ik ben, komt door wie jij was. Ik hoop dat je het resultaat van jouw boetseerwerk verder kunt volgen in de hemel en dat je fier bent op wat ik heb bereikt. i Table of contents Acknowledgements .................................................................................................................................. i Table of contents ..................................................................................................................................... ii List of symbols and abbreviations .......................................................................................................... iv Summary ................................................................................................................................................
  • Ordovician Land Plants and Fungi from Douglas Dam, Tennessee

    Ordovician Land Plants and Fungi from Douglas Dam, Tennessee

    PROOF The Palaeobotanist 68(2019): 1–33 The Palaeobotanist 68(2019): xxx–xxx 0031–0174/2019 0031–0174/2019 Ordovician land plants and fungi from Douglas Dam, Tennessee GREGORY J. RETALLACK Department of Earth Sciences, University of Oregon, Eugene, OR 97403, USA. *Email: gregr@uoregon. edu (Received 09 September, 2019; revised version accepted 15 December, 2019) ABSTRACT The Palaeobotanist 68(1–2): Retallack GJ 2019. Ordovician land plants and fungi from Douglas Dam, Tennessee. The Palaeobotanist 68(1–2): xxx–xxx. 1–33. Ordovician land plants have long been suspected from indirect evidence of fossil spores, plant fragments, carbon isotopic studies, and paleosols, but now can be visualized from plant compressions in a Middle Ordovician (Darriwilian or 460 Ma) sinkhole at Douglas Dam, Tennessee, U. S. A. Five bryophyte clades and two fungal clades are represented: hornwort (Casterlorum crispum, new form genus and species), liverwort (Cestites mirabilis Caster & Brooks), balloonwort (Janegraya sibylla, new form genus and species), peat moss (Dollyphyton boucotii, new form genus and species), harsh moss (Edwardsiphyton ovatum, new form genus and species), endomycorrhiza (Palaeoglomus strotheri, new species) and lichen (Prototaxites honeggeri, new species). The Douglas Dam Lagerstätte is a benchmark assemblage of early plants and fungi on land. Ordovician plant diversity now supports the idea that life on land had increased terrestrial weathering to induce the Great Ordovician Biodiversification Event in the sea and latest Ordovician (Hirnantian)
  • Occurrence of Glomeromycota Species in Aquatic Habitats: a Global Overview

    Occurrence of Glomeromycota Species in Aquatic Habitats: a Global Overview

    Occurrence of Glomeromycota species in aquatic habitats: a global overview MARIANA BESSA DE QUEIROZ1, KHADIJA JOBIM1, XOCHITL MARGARITO VISTA1, JULIANA APARECIDA SOUZA LEROY1, STEPHANIA RUTH BASÍLIO SILVA GOMES2, BRUNO TOMIO GOTO3 1 Programa de Pós-Graduação em Sistemática e Evolução, 2 Curso de Ciências Biológicas, and 3 Departamento de Botânica e Zoologia, Universidade Federal do Rio Grande do Norte, Campus Universitário, 59072-970, Natal, RN, Brazil * CORRESPONDENCE TO: [email protected] ABSTRACT — Arbuscular mycorrhizal fungi (AMF) are recognized in terrestrial and aquatic ecosystems. The latter, however, have received little attention from the scientific community and, consequently, are poorly known in terms of occurrence and distribution of this group of fungi. This paper provides a global list on AMF species inhabiting aquatic ecosystems reported so far by scientific community (lotic and lentic freshwater, mangroves, and wetlands). A total of 82 species belonging to 5 orders, 11 families, and 22 genera were reported in 8 countries. Lentic ecosystems have greater species richness. Most studies of the occurrence of AMF in aquatic ecosystems were conducted in the United States and India, which constitute 45% and 78% reports coming from temperate and tropical regions, respectively. KEY WORDS — checklist, flooded areas, mycorrhiza, taxonomy Introduction Aquatic ecosystems comprise about 77% of the planet surface (Rebouças 2006) and encompass a diversity of habitats favorable to many species from marine (ocean), transitional estuaries to continental (wetlands, lentic and lotic) environments (Reddy et al. 2018). Despite this territorial representativeness and biodiversity already recorded, there are gaps when considering certain types of organisms, e.g. fungi. Fungi are considered a common and important component of almost all trophic levels.
  • Specificity of Assemblage, Not Fungal Partner Species, Explains

    Specificity of Assemblage, Not Fungal Partner Species, Explains

    The ISME Journal (2021) 15:1614–1627 https://doi.org/10.1038/s41396-020-00874-x ARTICLE Specificity of assemblage, not fungal partner species, explains mycorrhizal partnerships of mycoheterotrophic Burmannia plants 1 1 2 3,4 2 Zhongtao Zhao ● Xiaojuan Li ● Ming Fai Liu ● Vincent S. F. T. Merckx ● Richard M. K. Saunders ● Dianxiang Zhang 1 Received: 9 July 2020 / Revised: 29 November 2020 / Accepted: 7 December 2020 / Published online: 6 January 2021 © The Author(s) 2021. This article is published with open access Abstract Mycoheterotrophic plants (MHPs) growing on arbuscular mycorrhizal fungi (AMF) usually maintain specialized mycorrhizal associations. The level of specificity varies between MHPs, although it remains largely unknown whether interactions with mycorrhizal fungi differ by plant lineage, species, and/or by population. Here, we investigate the mycorrhizal interactions among Burmannia species (Burmanniaceae) with different trophic modes using high-throughput DNA sequencing. We characterized the inter- and intraspecific dynamics of the fungal communities by assessing the composition and diversity of fungi among sites. We found that fully mycoheterotrophic species are more specialized in their 1234567890();,: 1234567890();,: fungal associations than chlorophyllous species, and that this specialization possibly results from the gradual loss of some fungal groups. In particular, although many fungal species were shared by different Burmannia species, fully MHP species typically host species-specific fungal assemblages, suggesting that they have a preference for the selected fungi. Although no apparent cophylogenetic relationship was detected between fungi and plants, we observe that evolutionarily closely related plants tend to have a greater proportion of shared or closely related fungal partners. Our findings suggest a host preference and specialization toward fungal assemblages in Burmannia, improving understanding of interactions between MHPs and fungi.
  • Acaulospora Sieverdingii, an Ecologically Diverse New Fungus In

    Acaulospora Sieverdingii, an Ecologically Diverse New Fungus In

    Journal of Applied Botany and Food Quality 84, 47 - 53 (2011) 1Agroscope Reckenholz-Tänikon Research Station ART, Ecological Farming Systems, Zürich, Switzerland 2Institute of Botany, Academy of Sciences of the Czech Republic, Průhonice, Czech Republic 3Department of Plant Protection, West Pomeranian University of Technology, Szczecin, Poland 4Université de Bourgogne, Plante-Microbe-Environnement, CNRS, UMR, INRA-CMSE, Dijon, France 5International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria 6Université de Lomé, Ecole Supérieure d’Agronomie, Département de la Production Végétale, Laboratoire de Virologie et de Biotechnologie Végétales (LVBV), Lomé, Togo 7International Institute of Tropical Agriculture (IITA), Cotonou, Benin 8University of Parakou, Ecole National des Sciences Agronomiques et Techniques, Parakou, Benin 9Departamento de Micologia, CCB, Universidade Federal de Pernambuco, Cidade Universitaria, Recife, Brazil Acaulospora sieverdingii, an ecologically diverse new fungus in the Glomeromycota, described from lowland temperate Europe and tropical West Africa Fritz Oehl1*, Zuzana Sýkorová2, Janusz Błaszkowski3, Iván Sánchez-Castro4, Danny Coyne5, Atti Tchabi6, Louis Lawouin7, Fabien C.C. Hountondji7, 8, Gladstone Alves da Silva9 (Received December 12, 2010) Summary Materials and methods From a survey of arbuscular mycorrhizal (AM) fungi in agro- Soil sampling and spore isolation ecosystems in Central Europe and West Africa, an undescribed Between March 2000 and April 2009, soil cores of 0-10 cm depth species of Acaulospora was recovered and is presented here under were removed from various agro-ecological systems. These were the epithet Acaulospora sieverdingii. Spores of A. sieverdingii are approximately 300 lowland, mountainous and alpine sites in 60-80 µm in diam, hyaline to subhyaline to rarely light yellow and Germany, France, Italy and Switzerland, and 24 sites in Benin have multiple pitted depressions on the outer spore wall similar (tropical West Africa).
  • Molecular Diversity and Distribution of Arbuscular Mycorrhizal Fungi at Different Elevations in Mt

    Molecular Diversity and Distribution of Arbuscular Mycorrhizal Fungi at Different Elevations in Mt

    fmicb-12-609386 March 4, 2021 Time: 11:24 # 1 ORIGINAL RESEARCH published: 04 March 2021 doi: 10.3389/fmicb.2021.609386 Molecular Diversity and Distribution of Arbuscular Mycorrhizal Fungi at Different Elevations in Mt. Taibai of Qinling Mountain Mengge Zhang1,2,3, Zhaoyong Shi1,2,3*, Mei Yang1,2,3, Shichuan Lu1,2,3, Libing Cao1 and Xugang Wang1,2,3 1 College of Agriculture, Henan University of Science and Technology, Luoyang, China, 2 Luoyang Key Laboratory of Symbiotic Microorganism and Green Development, Luoyang, China, 3 Henan Engineering Research Center of Human Settlements, Luoyang, China Arbuscular mycorrhizal fungi (AMFs) play a vital role in ecosystems, especially in ecosystem variability, diversity, and function. Understanding the AMF diversity, distribution, and their driver at different altitudinal gradients is a benefit for understanding the ecological function of AMF in mountain ecosystems. In this study, we explored the AMF molecular diversity and their distribution from 660 to 3,500 m a.s.l. in Mount Taibai of Qinling Mountains based on high-throughput sequencing technology. A total of 702 operational taxonomic units (OTUs) in 103 species of AMF are isolated from Edited by: soil samples, which belong to 18 identified and 1 unidentified genus in 10 families. The Siu Mui Tsai, University of São Paulo, Brazil fungi in the genus of Glomus is the most dominant, with the occurrence frequency of Reviewed by: 100% and the relative abundance of 42.268% and 33.048% on the species and OTU Heng Gui, level, respectively. The AMF colonization in root could be simulated by a cubic function Kunming Institute of Botany, Chinese Academy of Sciences, China with the change of altitudes with the peak and trough at a.s.l.
  • How to Cite Complete Issue More Information About This Article

    How to Cite Complete Issue More Information About This Article

    Revista mexicana de biodiversidad ISSN: 1870-3453 ISSN: 2007-8706 Instituto de Biología Álvarez-Lopeztello, Jonás; Hernández-Cuevas, Laura V.; Castillo, Rafael F. del; Robles, Celerino Second world record of Glomus trufemii (Glomeromycota: Fungi), an arbuscular mycorrhizal fungus from a Mexican savanna Revista mexicana de biodiversidad, vol. 89, no. 1, 2018, pp. 298-300 Instituto de Biología DOI: 10.22201/ib.20078706e.2018.1.2101 Available in: http://www.redalyc.org/articulo.oa?id=42559253025 How to cite Complete issue Scientific Information System Redalyc More information about this article Network of Scientific Journals from Latin America and the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Project academic non-profit, developed under the open access initiative Revista Mexicana de Biodiversidad 89 (2018): 298-300 Research note Second world record of Glomus trufemii (Glomeromycota: Fungi), an arbuscular mycorrhizal fungus from a Mexican savanna Segundo registro mundial de Glomus trufemii (Glomeromycota: Fungi), un hongo micorrízico arbuscular de una sabana mexicana Jonás Álvarez-Lopeztello a, Laura V. Hernández-Cuevas b, *, Rafael F. del Castillo a, Celerino Robles a a Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional, Oaxaca, Instituto Politécnico Nacional, Hornos 1003, 71230 Santa Cruz Xoxocotlán, Oaxaca, Mexico b Centro de Investigación en Genética y Ambiente, Universidad Autónoma de Tlaxcala, Km 10.5 Autopista Texmelucan-Tlaxcala, 90120 Ixtacuixtla, Tlaxcala, Mexico *Corresponding author: [email protected] (L.V. Hernández-Cuevas) Received: 25 January 2017; accepted: 07 September 2017 Abstract In Mexico, studies of diversity of arbuscular mycorrhizal fungi (AMF) are still scarce. Here we report the second record in the world, and the first record in Mexico of Glomus trufemii (Glomeraceae) from a tropical humid savanna.
  • Redalyc.ARBUSCULAR MYCORRHIZAL FUNGI

    Redalyc.ARBUSCULAR MYCORRHIZAL FUNGI

    Tropical and Subtropical Agroecosystems E-ISSN: 1870-0462 [email protected] Universidad Autónoma de Yucatán México Lara-Chávez, Ma. Blanca Nieves; Ávila-Val, Teresita del Carmen; Aguirre-Paleo, Salvador; Vargas- Sandoval, Margarita ARBUSCULAR MYCORRHIZAL FUNGI IDENTIFICATION IN AVOCADO TREES INFECTED WITH Phytophthora cinnamomi RANDS UNDER BIOCONTROL Tropical and Subtropical Agroecosystems, vol. 16, núm. 3, septiembre-diciembre, 2013, pp. 415-421 Universidad Autónoma de Yucatán Mérida, Yucatán, México Available in: http://www.redalyc.org/articulo.oa?id=93929595013 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative Tropical and Subtropical Agroecosystems, 16 (2013): 415 - 421 ARBUSCULAR MYCORRHIZAL FUNGI IDENTIFICATION IN AVOCADO TREES INFECTED WITH Phytophthora cinnamomi RANDS UNDER BIOCONTROL [IDENTIFICACIÓN DE HONGOS MICORRIZÓGENOS ARBUSCULARES EN ÁRBOLES DE AGUACATE INFECTADOS CON Phytophthora cinnamomi RANDS BAJO CONTROL BIOLÓGICO] Ma. Blanca Nieves Lara-Chávez1*, Teresita del Carmen Ávila-Val1, Salvador Aguirre-Paleo1 and Margarita Vargas-Sandoval1 1Facultad de Agrobiología “Presidente Juárez” Universidad Michoacana de San Nicolás de Hidalgo Paseo Lázaro Cárdenas Esquina Con Berlín S/N, Uruapan, Michoacán, México. E-mail [email protected] *Corresponding author SUMMARY second and third sampling, the presence of new kinds of HMA there was not observed but the number of Arbuscular mycorrhizal fungi presences in the spores increased (average 38.09% and 30% rhizosphere of avocado trees with symptoms of root respectively). The application of these species in the rot sadness caused by Phytophthora cinnamomi were genus Trichoderma to control root pathogens of determined.
  • 1 a Native and an Invasive Dune Grass Share

    1 a Native and an Invasive Dune Grass Share

    A native and an invasive dune grass share similar, patchily distributed, root-associated fungal communities Renee B Johansen1, Peter Johnston2, Piotr Mieczkowski3, George L.W. Perry4, Michael S. Robeson5, 1 6 Bruce R Burns , Rytas Vilgalys 1: School of Biological Sciences, The University of Auckland, Private Bag 92019, Auckland Mail Centre, Auckland 1142, New Zealand 2: Landcare Research, Private Bag 92170, Auckland Mail Centre, Auckland 1142, New Zealand 3: Department of Genetics, University of North Carolina, Chapel Hill, North Carolina, U.S.A. 4: School of Environment, The University of Auckland, Private Bag 92019, Auckland, New Zealand 5: Fish, Wildlife and Conservation Biology, Colorado State University, Fort Collins, CO, USA 6: Department of Biology, Duke University, Durham, NC 27708, USA Corresponding author: Renee Johansen, Ph: +64 21 0262 9143, Fax: +64 9 574 4101 Email: [email protected] For the published version of this article see here: https://www.sciencedirect.com/science/article/abs/pii/S1754504816300848 1 Abstract Fungi are ubiquitous occupiers of plant roots, yet the impact of host identity on fungal community composition is not well understood. Invasive plants may benefit from reduced pathogen impact when competing with native plants, but suffer if mutualists are unavailable. Root samples of the invasive dune grass Ammophila arenaria and the native dune grass Leymus mollis were collected from a Californian foredune. We utilised the Illumina MiSeq platform to sequence the ITS and LSU gene regions, with the SSU region used to target arbuscular mycorrhizal fungi (AMF). The two plant species largely share a fungal community, which is dominated by widespread generalists.
  • Acaulosporoid Glomeromycotan Spores with a Germination Shield from the 400-Million-Year-Old Rhynie Chert

    Acaulosporoid Glomeromycotan Spores with a Germination Shield from the 400-Million-Year-Old Rhynie Chert

    KU ScholarWorks | http://kuscholarworks.ku.edu Please share your stories about how Open Access to this article benefits you. Acaulosporoid glomeromycotan spores with a germination shield from the 400-million- year-old Rhynie chert by Nora Dotzler, Christopher Walker, Michael Krings, Hagen Hass, Hans Kerp, Thomas N. Taylor, Reinhard Agerer 2009 This is the published version of the article, made available with the permission of the publisher. The original published version can be found at the link below. Dotzler, N., Walker, C., Krings, M., Hass, H., Kerp, H., Taylor, T., Agerer, R. 2009. Acaulosporoid glomeromycotan spores with a ger- mination shield from the 400-million-year-old Rhynie chert. Mycol Progress 8:9-18. Published version: http://dx.doi.org/10.1007/s11557-008-0573-1 Terms of Use: http://www2.ku.edu/~scholar/docs/license.shtml This work has been made available by the University of Kansas Libraries’ Office of Scholarly Communication and Copyright. Mycol Progress (2009) 8:9–18 DOI 10.1007/s11557-008-0573-1 ORIGINAL ARTICLE Acaulosporoid glomeromycotan spores with a germination shield from the 400-million-year-old Rhynie chert Nora Dotzler & Christopher Walker & Michael Krings & Hagen Hass & Hans Kerp & Thomas N. Taylor & Reinhard Agerer Received: 4 June 2008 /Revised: 16 September 2008 /Accepted: 30 September 2008 / Published online: 15 October 2008 # German Mycological Society and Springer-Verlag 2008 Abstract Scutellosporites devonicus from the Early Devo- single or double lobes to tongue-shaped structures usually nian Rhynie chert is the only fossil glomeromycotan spore with infolded margins that are distally fringed or palmate. taxon known to produce a germination shield.
  • Acaulospora Pustulata and Acaulospora Tortuosa, Two New Species in the Glomeromycota from Sierra Nevada National Park (Southern Spain)

    Acaulospora Pustulata and Acaulospora Tortuosa, Two New Species in the Glomeromycota from Sierra Nevada National Park (Southern Spain)

    Nova Hedwigia Vol. 97 (2013) Issue 3–4, 305–319 Article published online July 5, 2013 Acaulospora pustulata and Acaulospora tortuosa, two new species in the Glomeromycota from Sierra Nevada National Park (southern Spain) Javier Palenzuela1, Concepción Azcón-Aguilar1, José-Miguel Barea1, Gladstone Alves da Silva2 and Fritz Oehl3* 1 Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín, CSIC, Profesor Albareda 1, 18008 Granada, Spain 2 Departamento de Micologia, CCB, Universidade Federal de Pernambuco, Av. Prof. Nelson Chaves s/n, Cidade Universitária, 50670-420, Recife, PE, Brazil 3 Federal Research Institute Agroscope Reckenholz-Tänikon ART, Organic Farming Systems, Reckenholzstrasse 191, CH-8046 Zürich, Switzerland With 24 figures Abstract: Two new Acaulospora species were found in two wet mountainous grassland ecosystems of Sierra Nevada National Park (Spain), living in the rhizosphere of two endangered plants, Ophioglossum vulgatum and Narcissus nevadensis, which co-occurred with other plants like Holcus lanatus, Trifolium repens, Mentha suaveolens and Carum verticillatum, in soils affected by ground water flow. The two fungi produced spores in pot cultures, using O. vulgatum, N. nevadensis, H. lanatus and T. repens as bait plants. Acaulospora pustulata has a pustulate spore ornamentation similar to that of Diversispora pustulata, while A. tortuosa has surface projections that resemble innumerous hyphae-like structures that are more rudimentary than the hyphae-like structures known for spores of Sacculospora baltica or Glomus tortuosum. Phylogenetic analyses of sequences of the ITS and partial LSU of the ribosomal genes reveal that both fungi are new species within the Acaulosporaceae. They are most closely related to A.