Cargando…

Recent Fragmentation May Not Alter Genetic Patterns in Endangered Long-Lived Species: Evidence From Taxus cuspidata

Forestland fragmentation caused by overexploitation of forest resources can in principle reduce genetic diversity, limit gene flow and eventually lead to species developing strong genetic structure. However, the genetic consequences of recent anthropogenic fragmentation of tree species remain unclea...

Descripción completa

Detalles Bibliográficos
Autores principales: Su, Jinyuan, Yan, Yu, Song, Jia, Li, Junqing, Mao, Jianfeng, Wang, Nian, Wang, Wenting, Du, Fang K.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6220038/
https://www.ncbi.nlm.nih.gov/pubmed/30429863
http://dx.doi.org/10.3389/fpls.2018.01571
_version_ 1783368747652743168
author Su, Jinyuan
Yan, Yu
Song, Jia
Li, Junqing
Mao, Jianfeng
Wang, Nian
Wang, Wenting
Du, Fang K.
author_facet Su, Jinyuan
Yan, Yu
Song, Jia
Li, Junqing
Mao, Jianfeng
Wang, Nian
Wang, Wenting
Du, Fang K.
author_sort Su, Jinyuan
collection PubMed
description Forestland fragmentation caused by overexploitation of forest resources can in principle reduce genetic diversity, limit gene flow and eventually lead to species developing strong genetic structure. However, the genetic consequences of recent anthropogenic fragmentation of tree species remain unclear. Taxus cuspidata, which has extremely small populations distributed mainly in Changbai Mt. in Northeast (NE) China, has recently endured severe habitat fragmentation. Here, we investigate the pattern of genetic diversity and structure, identify risk factors, predict the future distribution and finally provide guidelines for the conservation and management of this species. We used three chloroplast and two mitochondrial DNA fragments, which are both paternally inherited in yews but differ in mutation rates, to genotype a total of 265 individuals from 26 populations covering the distribution of the species in China. Both chloroplast and mitochondrial data showed high degrees of genetic diversity, extensive gene flow over the entire geographical range and historical stability of both effective population size and distribution of the species. However, ecological niche modeling suggests a decrease in suitable areas for this species by the years 2050 and 2070. The maintenance of high genetic diversity and the existence of sufficient gene flow suggest that recent fragmentation has not affected the genetic composition of the long-lived tree T. cuspidata. However, severe impacts of anthropogenic activities are already threatening the species. Conservation and management strategies should be implemented in order to protect the remnant populations.
format Online
Article
Text
id pubmed-6220038
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-62200382018-11-14 Recent Fragmentation May Not Alter Genetic Patterns in Endangered Long-Lived Species: Evidence From Taxus cuspidata Su, Jinyuan Yan, Yu Song, Jia Li, Junqing Mao, Jianfeng Wang, Nian Wang, Wenting Du, Fang K. Front Plant Sci Plant Science Forestland fragmentation caused by overexploitation of forest resources can in principle reduce genetic diversity, limit gene flow and eventually lead to species developing strong genetic structure. However, the genetic consequences of recent anthropogenic fragmentation of tree species remain unclear. Taxus cuspidata, which has extremely small populations distributed mainly in Changbai Mt. in Northeast (NE) China, has recently endured severe habitat fragmentation. Here, we investigate the pattern of genetic diversity and structure, identify risk factors, predict the future distribution and finally provide guidelines for the conservation and management of this species. We used three chloroplast and two mitochondrial DNA fragments, which are both paternally inherited in yews but differ in mutation rates, to genotype a total of 265 individuals from 26 populations covering the distribution of the species in China. Both chloroplast and mitochondrial data showed high degrees of genetic diversity, extensive gene flow over the entire geographical range and historical stability of both effective population size and distribution of the species. However, ecological niche modeling suggests a decrease in suitable areas for this species by the years 2050 and 2070. The maintenance of high genetic diversity and the existence of sufficient gene flow suggest that recent fragmentation has not affected the genetic composition of the long-lived tree T. cuspidata. However, severe impacts of anthropogenic activities are already threatening the species. Conservation and management strategies should be implemented in order to protect the remnant populations. Frontiers Media S.A. 2018-10-31 /pmc/articles/PMC6220038/ /pubmed/30429863 http://dx.doi.org/10.3389/fpls.2018.01571 Text en Copyright © 2018 Su, Yan, Song, Li, Mao, Wang, Wang and Du. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Su, Jinyuan
Yan, Yu
Song, Jia
Li, Junqing
Mao, Jianfeng
Wang, Nian
Wang, Wenting
Du, Fang K.
Recent Fragmentation May Not Alter Genetic Patterns in Endangered Long-Lived Species: Evidence From Taxus cuspidata
title Recent Fragmentation May Not Alter Genetic Patterns in Endangered Long-Lived Species: Evidence From Taxus cuspidata
title_full Recent Fragmentation May Not Alter Genetic Patterns in Endangered Long-Lived Species: Evidence From Taxus cuspidata
title_fullStr Recent Fragmentation May Not Alter Genetic Patterns in Endangered Long-Lived Species: Evidence From Taxus cuspidata
title_full_unstemmed Recent Fragmentation May Not Alter Genetic Patterns in Endangered Long-Lived Species: Evidence From Taxus cuspidata
title_short Recent Fragmentation May Not Alter Genetic Patterns in Endangered Long-Lived Species: Evidence From Taxus cuspidata
title_sort recent fragmentation may not alter genetic patterns in endangered long-lived species: evidence from taxus cuspidata
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6220038/
https://www.ncbi.nlm.nih.gov/pubmed/30429863
http://dx.doi.org/10.3389/fpls.2018.01571
work_keys_str_mv AT sujinyuan recentfragmentationmaynotaltergeneticpatternsinendangeredlonglivedspeciesevidencefromtaxuscuspidata
AT yanyu recentfragmentationmaynotaltergeneticpatternsinendangeredlonglivedspeciesevidencefromtaxuscuspidata
AT songjia recentfragmentationmaynotaltergeneticpatternsinendangeredlonglivedspeciesevidencefromtaxuscuspidata
AT lijunqing recentfragmentationmaynotaltergeneticpatternsinendangeredlonglivedspeciesevidencefromtaxuscuspidata
AT maojianfeng recentfragmentationmaynotaltergeneticpatternsinendangeredlonglivedspeciesevidencefromtaxuscuspidata
AT wangnian recentfragmentationmaynotaltergeneticpatternsinendangeredlonglivedspeciesevidencefromtaxuscuspidata
AT wangwenting recentfragmentationmaynotaltergeneticpatternsinendangeredlonglivedspeciesevidencefromtaxuscuspidata
AT dufangk recentfragmentationmaynotaltergeneticpatternsinendangeredlonglivedspeciesevidencefromtaxuscuspidata