RNA-Seq reveals leaf cuticular wax-related genes in Welsh onion.

The waxy cuticle plays a very important role in plant resistance to various biotic and abiotic stresses and is an important characteristic of Welsh onions. Two different types of biangan Welsh onions (BG) were selected for this study: BG, a wild-type covered by wax, which forms a continuous lipid me...

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Main Authors: Qianchun Liu, Changlong Wen, Hong Zhao, Liying Zhang, Jian Wang, Yongqin Wang
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2014-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC4240658?pdf=render
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author Qianchun Liu
Changlong Wen
Hong Zhao
Liying Zhang
Jian Wang
Yongqin Wang
author_facet Qianchun Liu
Changlong Wen
Hong Zhao
Liying Zhang
Jian Wang
Yongqin Wang
author_sort Qianchun Liu
collection DOAJ
description The waxy cuticle plays a very important role in plant resistance to various biotic and abiotic stresses and is an important characteristic of Welsh onions. Two different types of biangan Welsh onions (BG) were selected for this study: BG, a wild-type covered by wax, which forms a continuous lipid membrane on its epidermal cells, and GLBG, a glossy mutant of BG whose epidermal cells are not covered by wax. To elucidate the waxy cuticle-related gene expression changes, we used RNA-Seq to compare these two Welsh onion varieties with distinct differences in cuticular wax. The de novo assembly yielded 42,881 putative unigenes, 25.41% of which are longer than 1,000 bp. Among the high-quality unique sequences, 22,289 (52.0%) had at least one significant match to an existing gene model. A total of 798 genes, representing 1.86% of the total putative unigenes, were differentially expressed between these two Welsh onion varieties. The expression patterns of four important unigenes that are related to waxy cuticle biosynthesis were confirmed by RT-qPCR and COG class annotation, which demonstrated that these genes play an important role in defense mechanisms and lipid transport and metabolism. To our knowledge, this study is the first exploration of the Welsh onion waxy cuticle. These results may help to reveal the molecular mechanisms underlying the waxy cuticle and will be useful for waxy gene cloning, genetics and breeding as well as phylogenetic and evolutionary studies of the Welsh onion.
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spelling doaj.art-43de83454c684038b3662e31754804902022-12-21T23:52:46ZengPublic Library of Science (PLoS)PLoS ONE1932-62032014-01-01911e11329010.1371/journal.pone.0113290RNA-Seq reveals leaf cuticular wax-related genes in Welsh onion.Qianchun LiuChanglong WenHong ZhaoLiying ZhangJian WangYongqin WangThe waxy cuticle plays a very important role in plant resistance to various biotic and abiotic stresses and is an important characteristic of Welsh onions. Two different types of biangan Welsh onions (BG) were selected for this study: BG, a wild-type covered by wax, which forms a continuous lipid membrane on its epidermal cells, and GLBG, a glossy mutant of BG whose epidermal cells are not covered by wax. To elucidate the waxy cuticle-related gene expression changes, we used RNA-Seq to compare these two Welsh onion varieties with distinct differences in cuticular wax. The de novo assembly yielded 42,881 putative unigenes, 25.41% of which are longer than 1,000 bp. Among the high-quality unique sequences, 22,289 (52.0%) had at least one significant match to an existing gene model. A total of 798 genes, representing 1.86% of the total putative unigenes, were differentially expressed between these two Welsh onion varieties. The expression patterns of four important unigenes that are related to waxy cuticle biosynthesis were confirmed by RT-qPCR and COG class annotation, which demonstrated that these genes play an important role in defense mechanisms and lipid transport and metabolism. To our knowledge, this study is the first exploration of the Welsh onion waxy cuticle. These results may help to reveal the molecular mechanisms underlying the waxy cuticle and will be useful for waxy gene cloning, genetics and breeding as well as phylogenetic and evolutionary studies of the Welsh onion.http://europepmc.org/articles/PMC4240658?pdf=render
spellingShingle Qianchun Liu
Changlong Wen
Hong Zhao
Liying Zhang
Jian Wang
Yongqin Wang
RNA-Seq reveals leaf cuticular wax-related genes in Welsh onion.
PLoS ONE
title RNA-Seq reveals leaf cuticular wax-related genes in Welsh onion.
title_full RNA-Seq reveals leaf cuticular wax-related genes in Welsh onion.
title_fullStr RNA-Seq reveals leaf cuticular wax-related genes in Welsh onion.
title_full_unstemmed RNA-Seq reveals leaf cuticular wax-related genes in Welsh onion.
title_short RNA-Seq reveals leaf cuticular wax-related genes in Welsh onion.
title_sort rna seq reveals leaf cuticular wax related genes in welsh onion
url http://europepmc.org/articles/PMC4240658?pdf=render
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