Detecting deep divergence in seventeen populations of tea geometrid (Ectropis obliqua Prout) in China by COI mtDNA and cross-breeding.

The tea geometrid (Ectropis obliqua Prout, Lepidoptera: Geometridae) is a dominant chewing insect endemic in most tea-growing areas in China. Recently some E. obliqua populations have been found to be resistant to the nucleopolyhedrovirus (EoNPV), a host-specific virus that has so far been found onl...

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Autores principales:	Gui-Hua Zhang, Zhi-Jun Yuan, Chuan-Xi Zhang, Kun-Shan Yin, Mei-Jun Tang, Hua-Wei Guo, Jian-Yu Fu, Qiang Xiao
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c2d9c366a888478abb00e014dea9b69c
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spelling	oai:doaj.org-article:c2d9c366a888478abb00e014dea9b69c2021-11-18T08:16:17ZDetecting deep divergence in seventeen populations of tea geometrid (Ectropis obliqua Prout) in China by COI mtDNA and cross-breeding.1932-620310.1371/journal.pone.0099373https://doaj.org/article/c2d9c366a888478abb00e014dea9b69c2014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24915522/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203The tea geometrid (Ectropis obliqua Prout, Lepidoptera: Geometridae) is a dominant chewing insect endemic in most tea-growing areas in China. Recently some E. obliqua populations have been found to be resistant to the nucleopolyhedrovirus (EoNPV), a host-specific virus that has so far been found only in E. obliqua. Although the resistant populations are morphologically indistinguishable from susceptible populations, we conducted a nationwide collection and examined the genetic divergence in the COI region of the mtDNA in E. obliqua. Phylogenetic analyses of mtDNA in 17 populations revealed two divergent clades with genetic distance greater than 3.7% between clades and less than 0.7% within clades. Therefore, we suggest that E. obliqua falls into two distinct groups. Further inheritance analyses using reciprocal single-pair mating showed an abnormal F₁ generation with an unbalanced sex ratio and the inability to produce fertile eggs (or any eggs) through F1 self-crossing. These data revealed a potential cryptic species complex with deep divergence and reproductive isolation within E. obliqua. Uneven distribution of the groups suggests a possible geographic effect on the divergence. Future investigations will be conducted to examine whether EoNPV selection or other factors prompted the evolution of resistance.Gui-Hua ZhangZhi-Jun YuanChuan-Xi ZhangKun-Shan YinMei-Jun TangHua-Wei GuoJian-Yu FuQiang XiaoPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 6, p e99373 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Gui-Hua Zhang Zhi-Jun Yuan Chuan-Xi Zhang Kun-Shan Yin Mei-Jun Tang Hua-Wei Guo Jian-Yu Fu Qiang Xiao Detecting deep divergence in seventeen populations of tea geometrid (Ectropis obliqua Prout) in China by COI mtDNA and cross-breeding.
description	The tea geometrid (Ectropis obliqua Prout, Lepidoptera: Geometridae) is a dominant chewing insect endemic in most tea-growing areas in China. Recently some E. obliqua populations have been found to be resistant to the nucleopolyhedrovirus (EoNPV), a host-specific virus that has so far been found only in E. obliqua. Although the resistant populations are morphologically indistinguishable from susceptible populations, we conducted a nationwide collection and examined the genetic divergence in the COI region of the mtDNA in E. obliqua. Phylogenetic analyses of mtDNA in 17 populations revealed two divergent clades with genetic distance greater than 3.7% between clades and less than 0.7% within clades. Therefore, we suggest that E. obliqua falls into two distinct groups. Further inheritance analyses using reciprocal single-pair mating showed an abnormal F₁ generation with an unbalanced sex ratio and the inability to produce fertile eggs (or any eggs) through F1 self-crossing. These data revealed a potential cryptic species complex with deep divergence and reproductive isolation within E. obliqua. Uneven distribution of the groups suggests a possible geographic effect on the divergence. Future investigations will be conducted to examine whether EoNPV selection or other factors prompted the evolution of resistance.
format	article
author	Gui-Hua Zhang Zhi-Jun Yuan Chuan-Xi Zhang Kun-Shan Yin Mei-Jun Tang Hua-Wei Guo Jian-Yu Fu Qiang Xiao
author_facet	Gui-Hua Zhang Zhi-Jun Yuan Chuan-Xi Zhang Kun-Shan Yin Mei-Jun Tang Hua-Wei Guo Jian-Yu Fu Qiang Xiao
author_sort	Gui-Hua Zhang
title	Detecting deep divergence in seventeen populations of tea geometrid (Ectropis obliqua Prout) in China by COI mtDNA and cross-breeding.
title_short	Detecting deep divergence in seventeen populations of tea geometrid (Ectropis obliqua Prout) in China by COI mtDNA and cross-breeding.
title_full	Detecting deep divergence in seventeen populations of tea geometrid (Ectropis obliqua Prout) in China by COI mtDNA and cross-breeding.
title_fullStr	Detecting deep divergence in seventeen populations of tea geometrid (Ectropis obliqua Prout) in China by COI mtDNA and cross-breeding.
title_full_unstemmed	Detecting deep divergence in seventeen populations of tea geometrid (Ectropis obliqua Prout) in China by COI mtDNA and cross-breeding.
title_sort	detecting deep divergence in seventeen populations of tea geometrid (ectropis obliqua prout) in china by coi mtdna and cross-breeding.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/c2d9c366a888478abb00e014dea9b69c
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Detecting deep divergence in seventeen populations of tea geometrid (Ectropis obliqua Prout) in China by COI mtDNA and cross-breeding.

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