Spore Descriptions
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Chlamydospore Agar M113 Chlamydospore Agar Is Used for Differentiating Candida Albicans from Other Species of Candida on the Basis of Chlamydospore Formation
HiMedia Laboratories Technical Data Chlamydospore Agar M113 Chlamydospore Agar is used for differentiating Candida albicans from other species of Candida on the basis of chlamydospore formation. Composition** Ingredients Gms / Litre Ammonium sulphate 1.000 Monopotassium phosphate 1.000 Biotin 0.000005 Trypan blue 0.100 Purified polysaccharide 20.000 Agar 15.000 Final pH ( at 25°C) 5.1±0.2 **Formula adjusted, standardized to suit performance parameters Directions Suspend 37.1 grams in 1000 ml distilled water. Heat to boiling to dissolve the medium completely. Sterilize by autoclaving at 15 lbs pressure (121°C) for 15 minutes. Mix well and pour into sterile Petri plates. Principle And Interpretation Candida albicans is a diploid sexual fungus (a form of yeast), and the causitive agent of opportunistic oral and vaginal infections in humans (1). C. albicans is a commensal of skin, gastrointestinal and genitourinary tract. However, under certain conditions overgrowth of this results into oesopharyngeal candidiasis, vulvovaginal candidiasis and candidemia. Chlamydospores formation is the most differential characteristic of C. albicans (1). Chlamydospore Agar was specially designed for the differentiation of C. albicans from other species on the basis of chlamydospores formation. It is prepared according to the formula of Nickerson and Mankowshi (2). Ammonium sulphate acts as sources of ions that simulate metabolism. Monopotassium phosphate provides buffering to the medium. Biotin provides the necessary vitamins required for metabolism. Purified polysaccharide acts as a source of carbon. Trypan blue is a vital dye absorbed selectively by the chlamydospores and imparts blue colour to chlamydospores, whereas the filaments are colourless. Test for chlamydospores: Scratch cut mark like X onto the agar surface with inoculum using sterile needle. -
Induction of Conjugation and Zygospore Cell Wall Characteristics
plants Article Induction of Conjugation and Zygospore Cell Wall Characteristics in the Alpine Spirogyra mirabilis (Zygnematophyceae, Charophyta): Advantage under Climate Change Scenarios? Charlotte Permann 1 , Klaus Herburger 2 , Martin Felhofer 3 , Notburga Gierlinger 3 , Louise A. Lewis 4 and Andreas Holzinger 1,* 1 Department of Botany, Functional Plant Biology, University of Innsbruck, 6020 Innsbruck, Austria; [email protected] 2 Section for Plant Glycobiology, Department of Plant and Environmental Sciences, University of Copenhagen, 1871 Frederiksberg, Denmark; [email protected] 3 Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna (BOKU), 1190 Vienna, Austria; [email protected] (M.F.); [email protected] (N.G.) 4 Department of Ecology and Evolutionary Biology, University of Conneticut, Storrs, CT 06269-3043, USA; [email protected] * Correspondence: [email protected] Abstract: Extreme environments, such as alpine habitats at high elevation, are increasingly exposed to man-made climate change. Zygnematophyceae thriving in these regions possess a special means Citation: Permann, C.; Herburger, K.; of sexual reproduction, termed conjugation, leading to the formation of resistant zygospores. A field Felhofer, M.; Gierlinger, N.; Lewis, sample of Spirogyra with numerous conjugating stages was isolated and characterized by molec- L.A.; Holzinger, A. Induction of ular phylogeny. We successfully induced sexual reproduction under laboratory conditions by a Conjugation and Zygospore Cell Wall transfer to artificial pond water and increasing the light intensity to 184 µmol photons m−2 s−1. Characteristics in the Alpine Spirogyra This, however was only possible in early spring, suggesting that the isolated cultures had an inter- mirabilis (Zygnematophyceae, nal rhythm. -
Belowground Microbial Processes Underpin Forest Productivity
Belowground Microbial Processes Underpin Forest Productivity By C. Y. LI1) & E. STRZELCZYK2) Key words : Microbial processes, ecological functions, microbial interactions. Summary LI C. Y. & STRZELCZYK E. 2000. Belowground microbial processes underpin forest pro- ductivity. - Phyton (Horn, Austria) 40 (4): (129) - (134). Nitrogen-fixing bacteria associated with mycorrhizal fungi and mycorrhizas can be dem- onstrated with microaerophilic procedures. The chemical substrates in mycorrhizal fungi or mycorrhizas often stimulate the growth and nitrogenase activity of the associated N2 fixers. In addition, the associ- ated N2 fixers are producers of plant-growth-promoting substances and B-group vitamins. Combined inoculation of mycorrhizal fungi with N2 fixers enhances mycorrhiza formation. Other microbes in the mycorrhizosphere have capacities to breakdown primary minerals, thereby releasing nutrients available for uptake by plants. Thus, land restoration can be achieved by planting trees with nitrogen-fixing and rock weathering capacities, such as alders and some pines. The treatment can enhance nutrient availability and increase soil organic matter that provides organic substrate for nutri- ent release, maintain soil structure and enhance water-holding capacity. Also changes in tree species compositions on the site are likely to alter belowground processes through changes in functional processes of organisms that constitute ecosystems. Introduction Soil microbial populations are metabolically active in the mycorrhizosphere, where a continuous -
Introduction to Mycology
INTRODUCTION TO MYCOLOGY The term "mycology" is derived from Greek word "mykes" meaning mushroom. Therefore mycology is the study of fungi. The ability of fungi to invade plant and animal tissue was observed in early 19th century but the first documented animal infection by any fungus was made by Bassi, who in 1835 studied the muscardine disease of silkworm and proved the that the infection was caused by a fungus Beauveria bassiana. In 1910 Raymond Sabouraud published his book Les Teignes, which was a comprehensive study of dermatophytic fungi. He is also regarded as father of medical mycology. Importance of fungi: Fungi inhabit almost every niche in the environment and humans are exposed to these organisms in various fields of life. Beneficial Effects of Fungi: 1. Decomposition - nutrient and carbon recycling. 2. Biosynthetic factories. The fermentation property is used for the industrial production of alcohols, fats, citric, oxalic and gluconic acids. 3. Important sources of antibiotics, such as Penicillin. 4. Model organisms for biochemical and genetic studies. Eg: Neurospora crassa 5. Saccharomyces cerviciae is extensively used in recombinant DNA technology, which includes the Hepatitis B Vaccine. 6. Some fungi are edible (mushrooms). 7. Yeasts provide nutritional supplements such as vitamins and cofactors. 8. Penicillium is used to flavour Roquefort and Camembert cheeses. 9. Ergot produced by Claviceps purpurea contains medically important alkaloids that help in inducing uterine contractions, controlling bleeding and treating migraine. 10. Fungi (Leptolegnia caudate and Aphanomyces laevis) are used to trap mosquito larvae in paddy fields and thus help in malaria control. Harmful Effects of Fungi: 1. -
Fossil Fungi with Suggested Affinities to the Endogonaceae from the Middle Triassic of Antarctica
KU ScholarWorks | http://kuscholarworks.ku.edu Please share your stories about how Open Access to this article benefits you. Fossil fungi with suggested affinities to the Endogonaceae from the Middle Triassic of Antarctica by Michael Krings. Thomas N. Taylor, Nora Dotzler, and Gianna Persichini 2012 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. [Citation] Published version: http://www.dx.doi.org/10.3852/11-384 Terms of Use: http://www2.ku.edu/~scholar/docs/license.shtml KU ScholarWorks is a service provided by the KU Libraries’ Office of Scholarly Communication & Copyright. Mycologia, 104(4), 2012, pp. 835–844. DOI: 10.3852/11-384 # 2012 by The Mycological Society of America, Lawrence, KS 66044-8897 Fossil fungi with suggested affinities to the Endogonaceae from the Middle Triassic of Antarctica Michael Krings1 INTRODUCTION Department fu¨ r Geo- und Umweltwissenschaften, Pala¨ontologie und Geobiologie, Ludwig-Maximilians- Documenting the evolutionary history of fungi based Universita¨t, and Bayerische Staatssammlung fu¨r on fossils is generally hampered by the incompleteness Pala¨ontologie und Geologie, Richard-Wagner-Straße 10, of the fungal fossil record (Taylor et al. 2011). Only a 80333 Munich, Germany, and Department of Ecology few geologic deposits have yielded fungal fossils and Evolutionary Biology, and Natural History preserved in sufficient detail to permit assignment to Museum and Biodiversity Research Institute, University of Kansas, Lawrence, Kansas 66045 any one of the major lineages of fungi with any degree of confidence. Perhaps the most famous of these Thomas N. -
What Are Fungi?
Medical Mycology (BIOL 4849) Summer 2007 Dr. Cooper What are Fungi? Fungi in the Tree of Life • Living organisms on earth first arose about 3.5 billion years ago – Prokaryotic – Anaerobic • Oldest fossils of fungi are about 460 million years old • Coincides with the rapid expansion of multi-cellular organisms • Major multicellular eukaryotes are divided into Kingdoms – Animals – Plants – Fungi • Each of these three kingdoms differ in their basic cellular structure and mode of nutrition (defined by Whittaker, 1969) – Plants - photosynthetic, cellulosic cell walls – Animals - digestive systems, wall-less cells – Fungi - absorptive nutrition, chitinous walls • The estimates for the expansion of multicellular organisms are based upon phylogenetic analyses of Carl Woese – Examined ribosomal RNA (rRNA) • Present in prokaryotes and eukaryotes • Relatively stable, but changes occur over time; thereby acting as a chronometer – Distinguished three separate groups (Domains) of living organisms • Domains - rRNA sequence differences correlate with differences in cellular structure and physiology – Bacteria - “true bacteria” – Archaea - “ancient prokaryotes” – Eucarya - eukaryotes • Taxonomic grouping of “Kingdom” lies beneath that of “Domain” • Though the fossil evidence suggests fungi were present on earth about 450 million years ago, aquatic fungi (Phylum Chytridiomycota) most likely were present about a million years before this time Page 1 of 15 Copyright © 2007 Chester R. Cooper, Jr. Medical Mycology (BIOL 4849) Lecture 1, Summer 2007 • About -
1 Differential Morphological Changes in Response to Environmental Stimuli in A
bioRxiv preprint doi: https://doi.org/10.1101/372078; this version posted July 19, 2018. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. 1 Differential morphological changes in response to environmental stimuli in a 2 fungal plant pathogen 3 4 Carolina Sardinha Franciscoa, Xin Maa, Maria Manuela Zwyssiga, Bruce A. McDonalda, 5 Javier Palma-Guerreroa 6 7 aPlant Pathology Group, Institute of Integrative Biology, ETH Zürich, 8092 Zürich, 8 Switzerland 9 10 Running Title: Pleomorphism in Zymoseptoria tritici 11 12 #Address correspondence to Javier Palma-Guerrero, [email protected] 13 1 bioRxiv preprint doi: https://doi.org/10.1101/372078; this version posted July 19, 2018. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. 14 ABSTRACT 15 During their life cycles, pathogens have to adapt to many biotic and abiotic 16 environmental constraints to maximize their overall fitness. Morphological transitions are 17 one of the least understood of the many strategies employed by fungal plant pathogens 18 to adapt to constantly changing environments. We characterized the responses of the 19 wheat pathogen Zymoseptoria tritici to a series of environmental stimuli using 20 microscopy, transcriptomic analyses, and survival assays to explore the effects of 21 changing environments on morphology and adaptation. We found that all tested stimuli 22 induced morphological changes, with distinct responses observed among four different 23 strains. The transcription analyses indicated a co-regulation of morphogenesis and 24 virulence factors in Z. -
Sporocarp Ontogeny in Panus (Basidiomycotina): Evolution and Classification
Sporocarp Ontogeny in Panus (Basidiomycotina): Evolution and Classification David S. Hibbett; Shigeyuki Murakami; Akihiko Tsuneda American Journal of Botany, Vol. 80, No. 11. (Nov., 1993), pp. 1336-1348. Stable URL: http://links.jstor.org/sici?sici=0002-9122%28199311%2980%3A11%3C1336%3ASOIP%28E%3E2.0.CO%3B2-M American Journal of Botany is currently published by Botanical Society of America. Your use of the JSTOR archive indicates your acceptance of JSTOR's Terms and Conditions of Use, available at http://www.jstor.org/about/terms.html. JSTOR's Terms and Conditions of Use provides, in part, that unless you have obtained prior permission, you may not download an entire issue of a journal or multiple copies of articles, and you may use content in the JSTOR archive only for your personal, non-commercial use. Please contact the publisher regarding any further use of this work. Publisher contact information may be obtained at http://www.jstor.org/journals/botsam.html. Each copy of any part of a JSTOR transmission must contain the same copyright notice that appears on the screen or printed page of such transmission. The JSTOR Archive is a trusted digital repository providing for long-term preservation and access to leading academic journals and scholarly literature from around the world. The Archive is supported by libraries, scholarly societies, publishers, and foundations. It is an initiative of JSTOR, a not-for-profit organization with a mission to help the scholarly community take advantage of advances in technology. For more information regarding JSTOR, please contact [email protected]. http://www.jstor.org Tue Jan 8 09:54:21 2008 American Journal of Botany 80(11): 1336-1348. -
Diversity of Entomopathogens Fungi: Which Groups Conquered
bioRxiv preprint doi: https://doi.org/10.1101/003756; this version posted April 4, 2014. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. Diversity of entomopathogens Fungi: Which groups conquered the insect body? João P. M. Araújoa & David P. Hughesb aDepartment of Biology, Penn State University, University Park, Pennsylvania, United States of America. bDepartment of Entomology and Department of Biology, Penn State University, University Park, Pennsylvania, United States of America. [email protected]; [email protected]; Abstract The entomopathogenic Fungi comprise a wide range of ecologically diverse species. This group of parasites can be found distributed among all fungal phyla and as well as among the ecologically similar but phylogenetically distinct Oomycetes or water molds, that belong to a different kingdom (Stramenopila). As a group, the entomopathogenic fungi and water molds parasitize a wide range of insect hosts from aquatic larvae in streams to adult insects of high canopy tropical forests. Their hosts are spread among 18 orders of insects, in all developmental stages such as: eggs, larvae, pupae, nymphs and adults exhibiting completely different ecologies. Such assortment of niches has resulted in these parasites evolving a considerable morphological diversity, resulting in enormous biodiversity, much of which remains unknown. Here we gather together a huge amount of records of these entomopathogens to comparing and describe both their morphologies and ecological traits. These findings highlight a wide range of adaptations that evolved following the evolutionary transition to infecting the most diverse and widespread animals on Earth, the insects. -
BASIDIOMYCOTINA and ITS CLASSIFICATION Dr
BASIDIOMYCOTINA AND ITS CLASSIFICATION Dr. Vishnupriya Sharma Department of Botany B.Sc sem II, paper 2,Course code 2BOT T2 Title of the Paper- Mycology and Phytopathology Basidiomycotina Diagnostic features of Basidiomycotina 1. Basidiomycotina comprise of about 550 genera 15,000 species 2.Many of them are saprophytes while others are parasitic. These includes mushrooms, toad stools, puff balls, stink horns, shelf fungi, bracket fungi, rusts, and smuts. 3.They have Septate mycelium ,non motile spores and are characterised by the production of a club-shaped structure, known as Basidium 4. Basidium is a cell in which karyogamy and meiosis occurs. However, the basidium produces usually four spores externally known as basidiospores Vegetative structure: The vegetative body is well developed mycelium which consists of septate, branched mass of hyphae which grow on or in the substratum obtaining nourishment from host. Sometimes, a number of hyphae become interwoven to form thick strands of mycelium which are called rhizomorphs. In parasitic species the hyphae are either intercellular, sending haustoria into the cells or intracellular. The colour of the hyphae varies according to the species through three stages before the completion of life cycle. Three stages of development of mycelium The three stages are the primary, the secondary and the tertiary mycelium. The primary mycelium consists of hyphae with uninucleate cells. It develops from the germinating basidiospore. When young, the primary mycelium is multinucleate, but later on, due to the formation of septa, it divides into uninucleate cells. The primary mycelium constitutes the haplophase and never forms basidia and basidiospores. The primary mycelium may produce oidia which are uninucleate spores, formed on oidiophores. -
Escovopsis Trichodermoides Sp. Nov., Isolated from a Nest of the Lower Attine Ant Mycocepurus Goeldii
Antonie van Leeuwenhoek (2015) 107:731–740 DOI 10.1007/s10482-014-0367-1 ORIGINAL PAPER Escovopsis trichodermoides sp. nov., isolated from a nest of the lower attine ant Mycocepurus goeldii Virginia E. Masiulionis • Marta N. Cabello • Keith A. Seifert • Andre Rodrigues • Fernando C. Pagnocca Received: 30 April 2014 / Accepted: 18 December 2014 / Published online: 10 January 2015 Ó Springer International Publishing Switzerland 2015 Abstract Currently, five species are formally other species by highly branched, trichoderma-like described in Escovopsis, a specialized mycoparasitic conidiophores lacking swollen vesicles, with reduced genus of fungus gardens of attine ants (Hymenoptera: conidiogenous cells and distinctive conidia morphol- Formicidae: tribe Attini). Four species were isolated ogy. Phylogenetic analyses based on partial tef1 gene from leaf-cutting ants in Brazil, including Escovopsis sequences support the distinctiveness of this species. moelleri and Escovopsis microspora from nests of A portion of the internal transcribed spacers of the Acromyrmex subterraneus molestans, Escovopsis nuclear rDNA was sequenced to serve as a DNA weberi from a nest of Atta sp. and Escovopsis barcode. Future molecular and morphological studies lentecrescens from a nest of Acromyrmex subterran- in this group of fungi will certainly unravel the eus subterraneus. The fifth species, Escovopsis taxonomic diversity of Escovopsis associated with aspergilloides was isolated from a nest of the higher fungus-growing ants. attine ant Trachymyrmex ruthae from Trinidad. Here, we describe a new species, Escovopsis trichodermo- Keywords Attini Á Fungus-growing ant Á ides isolated from a fungus garden of the lower attine Hypocreales Á Mycoparasitism ant Mycocepurus goeldii, which differs from the five V. -
Biomass and Community Structure of Sporocarps Formed by Hypogeous Ectomycorrhizal Fungi Within Selected Forest Habitats of the H
Biomass and Community Structure of Sporocarps Formed by Hypogeous Ectomycorrhizal Fungi within Selected Forest Habitats of the H. J. Andrews Experimental Forest, Oregon by Daniel L. Luoma A THESIS submitted to Oregon State University in partial fulfillment of the requirements for the degree of Doctor of Philosophy Completed December 16, 1988 Commencement June 1989 `Some kinds of science dote on graphs, tabfes, and computer readouts. The finest naturalists have always known that biology without romance, without poetry, is not only incomplete but very often hopelessly distorted" — Frank Graham Jr., 1983 AN ABSTRACT OF THE THESIS OF Daniel L. Luoma for the degree of Doctor of Philosophy in Geography presented on December 16. 1988. Title: Biomass and Community Structure of Sporocarps Formed by Hypogeous Ectomycorrhizal Fungi within Selected Forest Habitats of the H. J. Andrews Experimental Forest. Oregon Abstract approved: Robert E. Frenkel This study characterizes the production of hypogeous sporocarps (broadly referred to as truffles) by ectomycorrhizal fungi within Douglas-fir dominated forests that are considered typical of those found on the west slopes of the central Cascade mountains in Oregon. Three aspects of sporocarp production are addressed: 1) the distribution of total biomass and biomass of each species by season and habitat, 2) analysis of sporocarp biomass from the perspective of community structure, and 3) correlation of biomass production with sporocarp number and selected forest floor parameters. Sporocarps with an equivalent dry standing biomass of 1.3 kg/ha were harvested from ten Douglas-fir stands in and near the H. J. Andrews Experimental forest. The maximum single stand sample biomass was equivalent to 9.9 kg/ha.