Evolutionary History of PEPC Genes in Green Plants: Implications for the 7 Q 5 Evolution of CAM in Orchids

Total Page:16

File Type:pdf, Size:1020Kb

Evolutionary History of PEPC Genes in Green Plants: Implications for the 7 Q 5 Evolution of CAM in Orchids YMPEV 5323 No. of Pages 6, Model 5G 23 October 2015 Molecular Phylogenetics and Evolution xxx (2015) xxx–xxx 1 Contents lists available at ScienceDirect Molecular Phylogenetics and Evolution journal homepage: www.elsevier.com/locate/ympev 2 Short Communication 6 4 Evolutionary history of PEPC genes in green plants: Implications for the 7 q 5 evolution of CAM in orchids a,b,1 c,1 c a c,d,e,⇑ 8 Hua Deng , Liang-Sheng Zhang , Guo-Qiang Zhang , Bao-Qiang Zheng , Zhong-Jian Liu , a,⇑ 9 Yan Wang 10 a State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese 11 Academy of Forestry, Beijing 100091, China 12 b Research Institute of Forestry Policy and Information, Chinese Academy of Forestry, Beijing 100091, China 13 c Shenzhen Key Laboratory for Orchid Conservation and Utilization, The National Orchid Conservation Center of China and The Orchid Conservation and Research Center of 14 Shenzhen, Shenzhen, China 15 d The Center for Biotechnology and BioMedicine, Graduate School at Shenzhen, Tsinghua University, Shenzhen, China 16 e College of Forestry, South China Agricultural University, Guangzhou, China 1718 19 article info abstract 3421 22 Article history: The phosphoenolpyruvate carboxylase (PEPC) gene is the key enzyme in CAM and C4 photosynthesis. A 35 23 Received 14 November 2014 detailed phylogenetic analysis of the PEPC family was performed using sequences from 60 available pub- 36 24 Revised 7 October 2015 lished plant genomes, the Phalaenopsis equestris genome and RNA-Seq of 15 additional orchid species. The 37 25 Accepted 8 October 2015 PEPC family consists of three distinct subfamilies, PPC-1, PPC-2, and PPC-3, all of which share a recent 38 26 Available online xxxx common ancestor in chlorophyte algae. The eudicot PPC-1 lineage separated into two clades due to whole 39 genome duplication (WGD). Similarly, the monocot PPC-1 lineage also divided into PPC-1M1 and PPC- 40 27 Keywords: 1M2 through an ancient duplication event. The monocot CAM- or C -related PEPC originated from the 41 28 Crassulacean acid metabolism (CAM) 4 clade PPC-1M1. WGD may not be the major driver for the performance of CAM function by PEPC, 42 29 Orchidaceae 30 Phosphoenolpyruvate carboxylase (PEPC) although it increased the number of copies of the PEPC gene. CAM may have evolved early in monocots, 43 31 Phylogeny as the CAM-related PEPC of orchids originated from the monocot ancient duplication, and the earliest 44 32 RNA-Seq sequences CAM-related PEPC may have evolved immediately after the diversification of monocots, with CAM devel- 45 33 oping prior to C4. Our results represent the most complete evolutionary history of PEPC genes in green 46 plants to date and particularly elucidate the origin of PEPC in orchids. 47 Ó 2015 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY-NC-ND license 48 (http://creativecommons.org/licenses/by-nc-nd/4.0/). 49 50 51 52 53 1. Introduction Silvera et al., 2010a). In the Orchidaceae, 50% of species were antic- 60 ipated to be CAM plants (Smith and Winter, 1996). 61 54 C4 photosynthesis has evolved independently more than 62 Phosphoenolpyruvate carboxylase (PEPC; EC 4.1.1.31) plays a 62 55 times, including 7500 species in 19 families or 3% of flowering key role in the carbon metabolism of C4 and crassulacean acid 63 56 plant species (Sage et al., 2011), whereas CAM has arisen multiple metabolism (CAM) plants (Masumoto et al., 2010) and markedly 64 57 times in 35 plant families and is present in 30,000 species, improves photosynthetic efficiency and water use efficiency 65 58 comprising 6% of plant species from the Lycophyta, Pterophyta, (Driever and Kromdijk, 2013). PEPC is widely present in all photo- 66 59 Gnetophyta, and Anthophyta divisions (Keeley and Rundel, 2003; synthetic organisms (Izui et al., 2004). In addition to photosyn- 67 thetic function, housekeeping isoforms of PEPC also play 68 essential metabolic roles in non-photosynthetic functions (Fan 69 Abbreviations: CAM, crassulacean acid metabolism; ML, maximum likelihood; et al., 2013; O’Leary et al., 2011). Consistent with its diverse roles 70 NJ, neighbor-joining; PEPC, phosphoenolpyruvate carboxylase; WGD, whole and origin, plant PEPC can be divided into two types: plant-type 71 genome duplication. q 72 This paper was edited by the Associate Editor Elizabeth Zimmer. PEPC (PPC-1) and bacterial-type PEPC (PPC-2). Although the PEPC ⇑ Corresponding authors at: Shenzhen Key Laboratory for Orchid Conservation involved in the CAM pathway has shown high sequence identity 73 and Utilization, The National Orchid Conservation Center of China and The Orchid to its counterpart in C4 photosynthesis, these genes are completely 74 Conservation and Research Center of Shenzhen, Shenzhen, China (Z.-J. Liu). different (Christin et al., 2014). 75 E-mail addresses: [email protected] (Z.-J. Liu), [email protected] Understanding the origin and function of PEPC has both funda- 76 (Y. Wang). mental and bioengineering importance, as it may help in identify- 77 1 These authors contributed equally to this work. http://dx.doi.org/10.1016/j.ympev.2015.10.007 1055-7903/Ó 2015 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Please cite this article in press as: Deng, H., et al. Evolutionary history of PEPC genes in green plants: Implications for the evolution of CAM in orchids. Mol. Phylogenet. Evol. (2015), http://dx.doi.org/10.1016/j.ympev.2015.10.007 YMPEV 5323 No. of Pages 6, Model 5G 23 October 2015 2 H. Deng et al. / Molecular Phylogenetics and Evolution xxx (2015) xxx–xxx 78 ing certain gene lineages suitable for the evolution of C4 and CAM After local searches were performed in the proteome datasets with 137 79 plants and in detecting specific amino acids essential for enzymatic the PEPC domain (PF00311) (Finn et al., 2014), the resulting 138 80 characteristics of photosynthetic PEPC and therefore in applying sequences were manually adjusted in multiple sequence align- 139 81 the C4 and CAM pathways in crops and fuel plants. The evolution- ments to delete obvious errors. Multiple sequence alignment was 140 82 ary history of the PEPC gene family, however, remains poorly performed in MUSCLE using the default parameters (Edgar, 2004). 141 83 understood in green plants, especially in the CAM plants, such as 84 orchids. In this work, a detailed phylogenetic analysis of the PEPC 2.4. Phylogenetic reconstruction and synteny analysis 142 85 family was performed, using Phalaenopsis equestris genome 86 sequences (Cai et al., 2015) and the RNA-Seq sequences of 15 other The phylogenetic trees of PEPC were reconstructed using the 143 87 orchid species, in combination with available genome sequences, neighbor-joining (NJ) and maximum likelihood (ML) methods. 144 88 to outline the evolutionary history of PEPC and to identify suitable Using the ‘pairwise deletion’ option and the ‘Poisson correction’ 145 model, we constructed NJ trees with MEGA, with a bootstrap test 146 89 lineages for the evolution of C4 and CAM plants. Our comparative 90 analyses help to elucidate the history of photosynthetic PEPC of 1000 replicates. ML trees were constructed using FastTree 147 91 and, in particular, shed light on the origin of PEPC in orchids. (http://www.microbesonline.org/fasttree) with the approximate 148 likelihood ratio test (aLRT) method. Synteny was detected using 149 92 2. Materials and methods the Plant Genome Duplication Database (Tang et al., 2008). 150 93 2.1. RNA extraction and transcriptome sequencing 3. Results and discussion 151 94 Total RNA was extracted from Dendrobium catenatum and Pha- 3.1. The evolutionary history of PEPC genes in green plants 152 95 laenopsis equestris tissue samples from the National Orchid Conser- 96 vation Center of China (NOCC) using the Sigma SpectrumTM Plant We constructed a phylogenetic tree of PEPC family members 153 97 Total RNA Kit. To identify the number of PEPC genes present in using genomic sequences of representative species (Fig. S1). The 154 98 D. catenatum, different tissues and timings were sampled, includ- tree shows that the PEPC gene family can be divided into three lin- 155 99 ing leaves (one was sampled at dawn, 6:30 a.m. and another at eages: PPC-1 (plant-type PEPC), PPC-2 (bacterial-type PEPC) and 156 100 dusk, 6:30 p.m.), stem, root (one sample of just the green tips with- PPC-3. To comprehensively understand the origin of PEPC, we 157 101 out velamen, another of the root with velamen), blossom-bud, and added the recently sequenced genome of Klebsormidium flaccidum 158 102 lip (modified petal). The P. equestris samples were taken from leaf, to the dataset. As the terrestrial algae closest to land plants, the 159 103 stem, root, and flower. Except for the leaves of D. catenatum, all charophytic alga Klebsormidium is important for finding the origins 160 104 other samples were collected in daytime. The transcriptome library of the CO2-concentrating mechanism and PEPC in aquatic algae and 161 105 construction and sequencing were performed at BGI and followed land plants. Our phylogenetic tree indicates that the PEPC of Kleb- 162 106 the protocols in Peng’s paper (Peng et al., 2012b). sormidium fills the major phylogenetic gap between PPC-1 and 163 PPC-2, as it is located between Chlorophyta and land plants. We 164 107 2.2. Data sources also found another class of PEPC in Klebsormidium and retrieved 165 its homologs from NCBI GenBank (http://www.ncbi.nlm.nih.gov/).
Recommended publications
  • Ecology and Ex Situ Conservation of Vanilla Siamensis (Rolfe Ex Downie) in Thailand
    Kent Academic Repository Full text document (pdf) Citation for published version Chaipanich, Vinan Vince (2020) Ecology and Ex Situ Conservation of Vanilla siamensis (Rolfe ex Downie) in Thailand. Doctor of Philosophy (PhD) thesis, University of Kent,. DOI Link to record in KAR https://kar.kent.ac.uk/85312/ Document Version UNSPECIFIED Copyright & reuse Content in the Kent Academic Repository is made available for research purposes. Unless otherwise stated all content is protected by copyright and in the absence of an open licence (eg Creative Commons), permissions for further reuse of content should be sought from the publisher, author or other copyright holder. Versions of research The version in the Kent Academic Repository may differ from the final published version. Users are advised to check http://kar.kent.ac.uk for the status of the paper. Users should always cite the published version of record. Enquiries For any further enquiries regarding the licence status of this document, please contact: [email protected] If you believe this document infringes copyright then please contact the KAR admin team with the take-down information provided at http://kar.kent.ac.uk/contact.html Ecology and Ex Situ Conservation of Vanilla siamensis (Rolfe ex Downie) in Thailand By Vinan Vince Chaipanich November 2020 A thesis submitted to the University of Kent in the School of Anthropology and Conservation, Faculty of Social Sciences for the degree of Doctor of Philosophy Abstract A loss of habitat and climate change raises concerns about change in biodiversity, in particular the sensitive species such as narrowly endemic species. Vanilla siamensis is one such endemic species.
    [Show full text]
  • Orchid Historical Biogeography, Diversification, Antarctica and The
    Journal of Biogeography (J. Biogeogr.) (2016) ORIGINAL Orchid historical biogeography, ARTICLE diversification, Antarctica and the paradox of orchid dispersal Thomas J. Givnish1*, Daniel Spalink1, Mercedes Ames1, Stephanie P. Lyon1, Steven J. Hunter1, Alejandro Zuluaga1,2, Alfonso Doucette1, Giovanny Giraldo Caro1, James McDaniel1, Mark A. Clements3, Mary T. K. Arroyo4, Lorena Endara5, Ricardo Kriebel1, Norris H. Williams5 and Kenneth M. Cameron1 1Department of Botany, University of ABSTRACT Wisconsin-Madison, Madison, WI 53706, Aim Orchidaceae is the most species-rich angiosperm family and has one of USA, 2Departamento de Biologıa, the broadest distributions. Until now, the lack of a well-resolved phylogeny has Universidad del Valle, Cali, Colombia, 3Centre for Australian National Biodiversity prevented analyses of orchid historical biogeography. In this study, we use such Research, Canberra, ACT 2601, Australia, a phylogeny to estimate the geographical spread of orchids, evaluate the impor- 4Institute of Ecology and Biodiversity, tance of different regions in their diversification and assess the role of long-dis- Facultad de Ciencias, Universidad de Chile, tance dispersal (LDD) in generating orchid diversity. 5 Santiago, Chile, Department of Biology, Location Global. University of Florida, Gainesville, FL 32611, USA Methods Analyses use a phylogeny including species representing all five orchid subfamilies and almost all tribes and subtribes, calibrated against 17 angiosperm fossils. We estimated historical biogeography and assessed the
    [Show full text]
  • PC22 Doc. 22.1 Annex (In English Only / Únicamente En Inglés / Seulement En Anglais)
    Original language: English PC22 Doc. 22.1 Annex (in English only / únicamente en inglés / seulement en anglais) Quick scan of Orchidaceae species in European commerce as components of cosmetic, food and medicinal products Prepared by Josef A. Brinckmann Sebastopol, California, 95472 USA Commissioned by Federal Food Safety and Veterinary Office FSVO CITES Management Authorithy of Switzerland and Lichtenstein 2014 PC22 Doc 22.1 – p. 1 Contents Abbreviations and Acronyms ........................................................................................................................ 7 Executive Summary ...................................................................................................................................... 8 Information about the Databases Used ...................................................................................................... 11 1. Anoectochilus formosanus .................................................................................................................. 13 1.1. Countries of origin ................................................................................................................. 13 1.2. Commercially traded forms ................................................................................................... 13 1.2.1. Anoectochilus Formosanus Cell Culture Extract (CosIng) ............................................ 13 1.2.2. Anoectochilus Formosanus Extract (CosIng) ................................................................ 13 1.3. Selected finished
    [Show full text]
  • Recent Developments in the Study of Orchid Mycorrhiza
    Plant and Soil 244: 149–163, 2002. 149 © 2002 Kluwer Academic Publishers. Printed in the Netherlands. Recent developments in the study of orchid mycorrhiza Hanne N. Rasmussen Danish Forest & Landscape Research Institute, 11 Hoersholm Kongevej, DK 2970 Hoersholm, Denmark∗ Received 21 August 2001. Accepted in revised form 12 December 2001 Key words: basidiomycetes, mycoheterotrophy, Orchidaceae, plant-fungal relationships, specificity, symbiosis Abstract Orchids are mycoheterotrophic during their seedling stage and in many species the dependency on fungi as a carbohydrate source is prolonged into adulthood. The mycobionts in orchid mycorrhiza belong in at least 5 major taxonomic groups of basidiomycetes. Traditional records have mainly focused on saprotrophic mycobionts but the participation of both ectomycorrhizal and parasitic fungi in orchid mycorrhiza has been corroborated. There is an increasing evidence of specific relationships between orchids and fungi, though usually not on a species-to-species level. Physiological compatibility demonstrated under artificial conditions, as in vitro, may be much broader, however. Recent development of field sowing techniques has improved the possibilities of evaluating orchid- fungal relations in an ecological context. Although the general nutrient flow in orchid mycorrhiza is well known, some questions remain regarding breakdown processes of fungi within orchid tissues, especially the ptyophagic syndrome that has recently been illustrated at the ultrastructural level for the first time. Energy sources for orchid mycorrhiza in the field sociate with species of Cymbidium and Gastrodia (Fan et al., 1996; Lan et al., 1996), are acknowledged sapro- Fungi associated with orchid mycorrhiza (OM) have trophs. Lentinus edodes Berk., the shiitake mushroom, traditionally been mostly regarded as saprotrophs, that is a white-rot saprotroph, can support the devel- dead organic material thus being the energy source opment of a chlorophyll-deficient orchid, Erythrorchis for the symbiosis.
    [Show full text]
  • Redalyc.AN ANNOTATED CHECKLIST of the ORCHIDS OF
    Lankesteriana International Journal on Orchidology ISSN: 1409-3871 [email protected] Universidad de Costa Rica Costa Rica Singh Jalal, Jeewan; Jayanthi, J. AN ANNOTATED CHECKLIST OF THE ORCHIDS OF WESTERN HIMALAYA, INDIA Lankesteriana International Journal on Orchidology, vol. 15, núm. 1, abril, 2015, pp. 7-50 Universidad de Costa Rica Cartago, Costa Rica Available in: http://www.redalyc.org/articulo.oa?id=44339830002 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 LANKESTERIANA 15(1): 7—50 . 2015. AN ANNOTATED CHECKLIST OF THE ORCHIDS OF WESTERN HIMALAYA, INDIA Jeewan S ingh J alal & J. J ayanthi Botanical Survey of India, Western Regional Centre, Pune- 411 001, Maharashtra, India Corresponding author: [email protected] abStract . A checklist of the Orchidaceae of Western Himalaya is presented based on recent orchid explorations and herbarium collections. This checklist comprised of 239 taxa of orchids belonging to 72 genera. Of these, 130 are terrestrial, 13 mycoheterotrophic and 96 epiphytic. Thirteen (13) species are endemic to Western Himalaya. The best represented genus is Dendrobium , with 16 species followed by Habenaria with 14 species and Bulbophyllum with 12 species. In this checklist habit, habitat, phenology, elevational range of distribution etc. are provided. Key word S: Orchids, Western Himalaya, Checklist, Uttarakhand, Himachal Pradesh, Jammu & Kashmir Introduction . The Western Himalaya of India lies large valley glaciers, deep river gorges cut by the river between 28º 45’– 36 0 20’ N latitude and 73 0 26’– 80 0 24’ system of Indus, Satluj and Ganga.
    [Show full text]
  • An Assessment of Orchids' Diversity in Penang Hill, Penang, Malaysia After
    Biodivers Conserv (2011) 20:2263–2272 DOI 10.1007/s10531-011-0087-z ORIGINAL PAPER An assessment of orchids’ diversity in Penang Hill, Penang, Malaysia after 115 years Rusea Go • Khor Hong Eng • Muskhazli Mustafa • Janna Ong Abdullah • Ahmad Ainuddin Naruddin • Nam Sook Lee • Chang Shook Lee • Sang Mi Eum • Kwang-Woo Park • Kyung Choi Received: 22 September 2010 / Accepted: 3 June 2011 / Published online: 12 June 2011 Ó The Author(s) 2011. This article is published with open access at Springerlink.com Abstract A comprehensive study on the orchid diversity in Penang Hill, Penang, Malaysia was conducted from 2004 to 2008 with the objective to evaluate the presence of orchid species listed by Curtis (J Strait Br R Asiat Soc 25:67–173, 1894) after more than 100 years. A total of 85 species were identified during this study, of which 52 are epiphytic or lithophytic and 33 are terrestrial orchids. This study identified 57 species or 64.8% were the same as those recorded by Curtis (1894), and 78 species or 66.1% of Turner’s (Gar- dens’ Bull Singap 47(2):599–620, 1995) checklist of 118 species for the state of Penang including 18 species which were not recorded by Curtis (1894) and the current study but are actually collected from Penang Hill. A comparison table of the current findings against Curtis (1894) and Turner (1995) is provided which shows only 56 species were the same in all three studies. The preferred account for comparison was Curtis’ (1894) list as his report was specifically for the areas around Penang Island especially Penang Hill, Georgetown and Ayer Itam areas.
    [Show full text]
  • An Ethnobotanical Analysis of Parasitic Plants (Parijibi) in the Nepal Himalaya Alexander Robert O’Neill1 and Santosh Kumar Rana2*
    O’Neill and Rana Journal of Ethnobiology and Ethnomedicine (2016) 12:14 DOI 10.1186/s13002-016-0086-y RESEARCH Open Access An ethnobotanical analysis of parasitic plants (Parijibi) in the Nepal Himalaya Alexander Robert O’Neill1 and Santosh Kumar Rana2* Abstract Background: Indigenous biocultural knowledge is a vital part of Nepalese environmental management strategies; however, much of it may soon be lost given Nepal’s rapidly changing socio-ecological climate. This is particularly true for knowledge surrounding parasitic and mycoheterotrophic plant species, which are well represented throughout the Central-Eastern Himalayas but lack a collated record. Our study addresses this disparity by analyzing parasitic and mycoheterotrophic plant species diversity in Nepal as well as the ethnobotanical knowledge that surrounds them. Methods: Botanical texts, online databases, and herbarium records were reviewed to create an authoritative compendium of parasitic and mycoheterotrophic plant species native or naturalized to the Nepal Central- Eastern Himalaya. Semi-structured interviews were then conducted with 141 informants to better understand the biocultural context of these species, emphasizing ethnobotanical uses, in 12 districts of Central-Eastern Nepal. Results: Nepal is a hotspot of botanical diversity, housing 15 families and 29 genera of plants that exhibit parasitic or mycoheterotrophic habit. Over 150 of the known 4500 parasitic plant species (~3 %) and 28 of the 160 mycoheterotrophic species (~18 %) are native or naturalized to Nepal; 13 of our surveyed parasitic species are endemic. Of all species documented, approximately 17 % of parasitic and 7 % of mycoheterotrophic plants have ethnobotanical uses as medicine (41 %), fodder (23 %), food (17 %), ritual objects (11 %), or material (8 %).
    [Show full text]
  • Diversity and Conservation of Rare and Endemic Orchids of North East India - a Review
    Indian Journal of Hill Farming Indian Journal of Hill Farming 27(1):81-89 Available online at www.kiran.nic.in Diversity and Conservation of Rare and Endemic Orchids of North East India - A Review L. C. DE*, R. P. MEDHI Received 12.11.2013. Revised 25.4.2014, Accepted 15.5.2014 ABSTRACT Northeast India, a mega-diversity centre, comprises eight states, viz., Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram, Nagaland, Sikkim and Tripura. It occupies 7.7% of India’s total geographical area supporting 50% of the flora (ca. 8000 species), of which 31.58% (ca. 2526 species) are endemic. The region is rich in orchids, ferns, oaks (Quercus spp.), bamboos, rhododendrons (Rhododendron spp.), magnolias (Magnolia spp.) etc. Orchids, believed to have evolved in this region, form a very noticeable feature of the vegetation here. Of about 1331 species of orchids, belonging to 186 genera reported from India; Northeast India sustains the highest number with about 856 species. Amongst them, 34 species of orchids are identified among the threatened plants of India and as many as endemic to different states of this region. Out of the eight orchid habitat regions in India, the two most important areas namely; the Eastern Himalayas and the North Eastern Region fall within the political boundaries of North Eastern Region. Terrestrial orchids are located in humus rich moist earth under tree shades in North Western India. Western Ghats harbour the small flowered orchids. Epiphytic orchids are common in North-Eastern India which grows up to an elevation of 2,000 mmsl. Some of valuable Indian orchids from this region which are used in hybridization programme are Aerides multiflorum, Aerides odoratum, Arundina graminifolia, Arachnis, Bulbophyllum, Calanthe masuca, Coelogyne elata, C.
    [Show full text]
  • A List of Orchid Books
    APPENDIX A list of Orchid Books TIM WING YAM, BENJAMIN SINGER, CHOY SIN HEW, TIIU KULL, IRINA TATARENKO, AND JOSEPH ARDITTI 279 280 T.W. Yam et al. Two private libraries, Benjamin Singer’s (which he donated to the American Orchid Society) and Joseph Arditti’s (its future is yet to be decided, it may be donated to an academic or scientific institutions or sold), served as primary sources for this list. However other sources were also used. The use of multiple sources increased the number of books which are listed but may have introduced errors or imperfections for following reasons. One and the same book may have been listed under different names erroneously. Names of authors may have been misspelled. When books have more than one author, the order of authors may have been presented differently in different lists and/or one or more names may have been omitted, added or misspelled. A book may have been published under different names in more than one country. Books are sometimes published by one publisher in one country and another in a different one. Spelling errors in different lists Translations Different editions Lack of information Conventions used in spelling names like “de” and “van.” Erroneous assumptions regarding Chinese surnames. The Chinese traditions is to list surname first, as for example, Yam Tim Wing which may end up incorrectly as Wing, Y. T. in some lists compiled in the West and correctly as T. W. Yam in others. Only the last names of some authors are listed. Some entries listed as books may in fact be no more than reprints.
    [Show full text]
  • Naturally Occurring Bisphenol F in Plants Used in Traditional Medicine
    Archives of Toxicology (2019) 93:1485–1490 https://doi.org/10.1007/s00204-019-02442-5 REVIEW ARTICLE Naturally occurring bisphenol F in plants used in traditional medicine Taya Huang1 · Lesley‑Ann Danaher1,2 · Beat J. Brüschweiler3 · George E. N. Kass1 · Caroline Merten1 Received: 27 January 2019 / Accepted: 9 April 2019 / Published online: 5 May 2019 © The Author(s) 2019 Abstract Bisphenol F (BPF, 4-[(4-hydroxyphenyl)methyl]phenol) is a bisphenol that is structurally similar to bisphenol A (BPA). In response to consumer concern towards BPA, industry has started to substitute BPA for BPF and other bisphenol analogues in the production of epoxy resins and coatings for various applications. In 2016, it was reported that commercially sold mustard contained naturally occurring BPF. Here, the existing literature was reviewed to investigate whether other natural sources of BPF among edible plants exist, including their impact on human exposure to BPF. Coeloglossum viride var. bracteatum (rhizome), Galeola faberi (rhizome), Gastrodia elata (rhizome), Xanthium strumarium (seeds) and Tropidia curculioides (root) were found to contain naturally occurring BPF. Botanical extracts from these plants are used in traditional Chinese medicine. The highest values of BPF were recorded for G. elata and T. curculioides. Information on precise doses of the plant extracts used is scarce; however, for G. elata, also known as Tian Ma and available in powder form, a daily exposure of BPF from this source could theoretically amount up to 4.5 µg/kg body weight per day (based on a 70 kg body weight). Therefore, herbal products used in traditional Chinese medicine should be considered as a potential source contributing to the overall human exposure when assessing endocrine-active bisphenolic compounds.
    [Show full text]
  • Orchids of Panchase Forest, Central Nepal: a Checklist
    2020J. Pl. Res. Vol. 18, No. 1, pp 143-156, 2020 Journal of Plant Resources Vol.18, No. 1 Orchids of Panchase Forest, Central Nepal: A Checklist Prabin Bhandari 1,2 *, Kalyan Shrestha 3 and Chandra Kanta Subedi 4 1State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093 CHINA 2University of Chinese Academy of Sciences, Beijing, 100049 CHINA 3Ramtulasi Secondary School, Rampur, Palpa, Nepal 4Research Centre for Applied Science and Technology, Tribhuvan University, Kathmandu, Nepal *Email: [email protected] Abstract The checklist of orchids distributed in Panchase forest, Central Nepal is updated, with 52 genera, 142 species and a natural hybrid. Notes on the altitudinal range, habit, habitat, phenology and distribution are given. Keywords: Hotspot, Mid-hill of Nepal, Orchidaceae, Orchid checklist, Orchids of Nepal Introduction Materials and Methods Orchidaceae in Nepal is one of the largest plant Study area families with about 506 species (Bhandari et al., The Panchase forest is located in the mid-hills of 2015; Bhandari et al., 2016b; Subedi et al., 2017; Central Nepal connecting the three districts; Kaski, Bhandari et al., 2019a; Bhandari et al., 2019b; Parbat and Syangja within the elevation range of 900 Raskoti & Ale, 2019a; Raskoti & Ale, 2019b; Bhandari et al., 2020) distributed in range of habitats to 2500 m asl (Figure 1). The forest is characterized from tropical low land to high Himalaya (Acharya by the presence of different terraces of terrain with et al., 2011; Rokaya et al., 2013; Rajbhandari & Rai, a range of habitat including forest, rangeland, shrub 2017; Shrestha et al., 2018).
    [Show full text]
  • 4-Nonylphenols
    DRAFT 4-Nonylphenols Key References: A. Soares, B. Guieysse, B. Jefferson, E. Cartmell, J.N. Lester, Nonylphenol in the environment: A critical review on occurrence, fate, toxicity and treatment in wastewaters, Environ. Int. 34 (2008) 1033–1049. doi:10.1016/j.envint.2008.01.004 European Chemicals Agency, ECHA SVHC Support Document for 4-Nonylphenol, branched and linear, 2012. https://echa.europa.eu/documents/10162/3024c102-20c9-4973-8f4e-7fc1dd361e7d European Chemicals Agency, ECHA SVHC Support Document for 4-Nonylphenol, branched and linear, ethoxylated, 2013. https://echa.europa.eu/documents/10162/9af34d5f-cd2f-4e63-859c-529bb39da7ae Chemical Identification Name Abbreviation CAS Numbers Structure 4-Nonylphenol, 4NPs 84852-15-3; 26543-97-5; 104-40-5; branched and 17404-66-9; 30784-30-6; 52427-13- linear 1; 186825-36-5; 142731-63-3; 90481-04-2; 25154-52-3; others not CAS#: 84852-15-3 identified CAS#: 104-40-5 CAS#: 26543-97-5 CAS#: 186825-36-5 4-Nonylphenol, 4NPnEOs 104-35-8; 7311-27-5; 14409-72-4; branched and (where n is 20427- 84-3; 26027-38-3; 27942-27- linear, the grade of 4; 34166-38- 6; 37205-87-1; 127087- ethoxylated ethoxylation) 87-0; 156609-10-8; 68412-54-4; 9016-45-9; others not identified Completed assessments as the basis for inclusion: EU REACH SVHC Notes: Nonylphenols are a group of chemicals that exist as many isomers having a nine carbon side chain which can be attached at various points on a phenol ring. 4-nonylphenols (4NPs) are nonylphenol isomers that exist in both branched and linear forms.
    [Show full text]