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Elatostema qinzhouense (Urticaceae), a new species from limestone karst in Guangxi, China

Elatostema qinzhouense L.F. Fu, A.K. Monro & Y.G. Wei, a new species from Guangxi, China is described and illustrated. Morphologically, E. qinzhouense is most similar to E. hezhouense from which it differs by having smaller size of leaf laminae, fewer and smaller staminate peduncle bracts, longe...

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Autores principales: Fu, Longfei, Monro, Alexandre K., Yang, Tiange, Wen, Fang, Pan, Bo, Xin, Zibing, Zhang, Zhixiang, Wei, Yigang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8061576/
https://www.ncbi.nlm.nih.gov/pubmed/33976965
http://dx.doi.org/10.7717/peerj.11148
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author Fu, Longfei
Monro, Alexandre K.
Yang, Tiange
Wen, Fang
Pan, Bo
Xin, Zibing
Zhang, Zhixiang
Wei, Yigang
author_facet Fu, Longfei
Monro, Alexandre K.
Yang, Tiange
Wen, Fang
Pan, Bo
Xin, Zibing
Zhang, Zhixiang
Wei, Yigang
author_sort Fu, Longfei
collection PubMed
description Elatostema qinzhouense L.F. Fu, A.K. Monro & Y.G. Wei, a new species from Guangxi, China is described and illustrated. Morphologically, E. qinzhouense is most similar to E. hezhouense from which it differs by having smaller size of leaf laminae, fewer and smaller staminate peduncle bracts, longer pistillate peduncle bracts and a larger achene. This result is supported by the molecular evidence. The phylogenetic position of the new species within Elatostema is evaluated using three DNA regions, ITS, trnH-psbA and psbM-trnD, for 107 taxa of Elatostema s.l. (including E. qinzhouense). Bayesian inference (BI) and maximum likelihood (ML) analyses each recovered the same strongly supported tree topologies, indicating that E. qinzhouense is a member of the core Elatostema clade and sister to E. hezhouense. Along with the phylogenetic studies, plastid genome and ribosomal DNA (rDNA) sequences of the new species are assembled and annotated. The plastid genome is 150,398 bp in length and comprises two inverted repeats (IRs) of 24,688 bp separated by a large single-copy of 83,919 bp and a small single-copy of 17,103 bp. A total of 113 functional genes are recovered, comprising 79 protein-coding genes, 30 tRNA genes, and four rRNA genes. The rDNA is 5,804 bp in length and comprised the 18S ribosomal RNA partial sequence (1,809 bp), internal transcribed spacer 1 (213 bp), 5.8S ribosomal RNA (164 bp), internal transcribed spacer 2 (248 bp) and 26S ribosomal RNA partial sequence (3,370 bp). In addition, the chromosome number of E. qinzhouense is observed to be 2n = 26, suggesting that the species is diploid. Given a consistent relationship between ploidy level and reproductive system in Elatostema, the new species is also considered to be sexually reproducing. Our assessment of the extinction threat for E. qinzhouense is that it is Endangered (EN) according to the criteria of the International Union for Conservation of Nature.
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spelling pubmed-80615762021-05-10 Elatostema qinzhouense (Urticaceae), a new species from limestone karst in Guangxi, China Fu, Longfei Monro, Alexandre K. Yang, Tiange Wen, Fang Pan, Bo Xin, Zibing Zhang, Zhixiang Wei, Yigang PeerJ Biodiversity Elatostema qinzhouense L.F. Fu, A.K. Monro & Y.G. Wei, a new species from Guangxi, China is described and illustrated. Morphologically, E. qinzhouense is most similar to E. hezhouense from which it differs by having smaller size of leaf laminae, fewer and smaller staminate peduncle bracts, longer pistillate peduncle bracts and a larger achene. This result is supported by the molecular evidence. The phylogenetic position of the new species within Elatostema is evaluated using three DNA regions, ITS, trnH-psbA and psbM-trnD, for 107 taxa of Elatostema s.l. (including E. qinzhouense). Bayesian inference (BI) and maximum likelihood (ML) analyses each recovered the same strongly supported tree topologies, indicating that E. qinzhouense is a member of the core Elatostema clade and sister to E. hezhouense. Along with the phylogenetic studies, plastid genome and ribosomal DNA (rDNA) sequences of the new species are assembled and annotated. The plastid genome is 150,398 bp in length and comprises two inverted repeats (IRs) of 24,688 bp separated by a large single-copy of 83,919 bp and a small single-copy of 17,103 bp. A total of 113 functional genes are recovered, comprising 79 protein-coding genes, 30 tRNA genes, and four rRNA genes. The rDNA is 5,804 bp in length and comprised the 18S ribosomal RNA partial sequence (1,809 bp), internal transcribed spacer 1 (213 bp), 5.8S ribosomal RNA (164 bp), internal transcribed spacer 2 (248 bp) and 26S ribosomal RNA partial sequence (3,370 bp). In addition, the chromosome number of E. qinzhouense is observed to be 2n = 26, suggesting that the species is diploid. Given a consistent relationship between ploidy level and reproductive system in Elatostema, the new species is also considered to be sexually reproducing. Our assessment of the extinction threat for E. qinzhouense is that it is Endangered (EN) according to the criteria of the International Union for Conservation of Nature. PeerJ Inc. 2021-04-19 /pmc/articles/PMC8061576/ /pubmed/33976965 http://dx.doi.org/10.7717/peerj.11148 Text en ©2021 Fu et al. https://creativecommons.org/licenses/by-nc/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by-nc/4.0/) , which permits using, remixing, and building upon the work non-commercially, as long as it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Biodiversity
Fu, Longfei
Monro, Alexandre K.
Yang, Tiange
Wen, Fang
Pan, Bo
Xin, Zibing
Zhang, Zhixiang
Wei, Yigang
Elatostema qinzhouense (Urticaceae), a new species from limestone karst in Guangxi, China
title Elatostema qinzhouense (Urticaceae), a new species from limestone karst in Guangxi, China
title_full Elatostema qinzhouense (Urticaceae), a new species from limestone karst in Guangxi, China
title_fullStr Elatostema qinzhouense (Urticaceae), a new species from limestone karst in Guangxi, China
title_full_unstemmed Elatostema qinzhouense (Urticaceae), a new species from limestone karst in Guangxi, China
title_short Elatostema qinzhouense (Urticaceae), a new species from limestone karst in Guangxi, China
title_sort elatostema qinzhouense (urticaceae), a new species from limestone karst in guangxi, china
topic Biodiversity
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8061576/
https://www.ncbi.nlm.nih.gov/pubmed/33976965
http://dx.doi.org/10.7717/peerj.11148
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