Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/pbi.13277 |
Regulatory changes in TaSNAC8-6A are associated with drought tolerance in wheat seedlings | |
Mao, Hude; Li, Shumin; Wang, Zhongxue; Cheng, Xinxiu; Li, Fangfang; Mei, Fangming; Chen, Nan; Kang, Zhensheng | |
通讯作者 | Mao, Hude |
来源期刊 | PLANT BIOTECHNOLOGY JOURNAL
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ISSN | 1467-7644 |
EISSN | 1467-7652 |
出版年 | 2020 |
卷号 | 18期号:4页码:1078-1092 |
英文摘要 | Wheat is a staple crop produced in arid and semi-arid areas worldwide, and its production is frequently compromised by water scarcity. Thus, increased drought tolerance is a priority objective for wheat breeding programmes, and among their targets, the NAC transcription factors have been demonstrated to contribute to plant drought response. However, natural sequence variations in these genes have been largely unexplored for their potential roles in drought tolerance. Here, we conducted a candidate gene association analysis of the stress-responsive NAC gene subfamily in a wheat panel consisting of 700 varieties collected worldwide. We identified a drought responsive gene, TaSNAC8-6A, that is tightly associated with drought tolerance in wheat seedlings. Further analysis found that a favourable allele TaSNAC8-6A(In-313), carrying an insertion in the ABRE promoter motif, is targeted by TaABFs and confers enhanced drought-inducible expression of TaSNAC8-6A in drought-tolerant genotypes. Transgenic wheat and Arabidopsis TaSNAC8-6A overexpression lines exhibited enhanced drought tolerance through induction of auxin- and drought-response pathways, confirmed by transcriptomic analysis, that stimulated lateral root development, subsequently improving water-use efficiency. Taken together, our findings reveal that natural variation in TaSNAC8-6A and specifically the TaSNAC8-6A(In-313) allele strongly contribute to wheat drought tolerance and thus represent a valuable genetic resource for improvement of drought-tolerant germplasm for wheat production. |
英文关键词 | wheat NAC transcription factor TaSNAC8-6A natural variation lateral root development drought stress |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
开放获取类型 | gold, Green Published |
收录类别 | SCI-E |
WOS记录号 | WOS:000497118300001 |
WOS关键词 | NAC TRANSCRIPTION FACTOR ; GENOME-WIDE ASSOCIATION ; STRESS-RESPONSE ; GRAIN-YIELD ; OSMOTIC-STRESS ; GENE ; ARABIDOPSIS ; RICE ; RESISTANCE ; SENESCENCE |
WOS类目 | Biotechnology & Applied Microbiology ; Plant Sciences |
WOS研究方向 | Biotechnology & Applied Microbiology ; Plant Sciences |
EI主题词 | 2019-11-19 |
来源机构 | 西北农林科技大学 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/310931 |
作者单位 | Northwest A&F Univ, Coll Plant Protect, State Key Lab Crop Stress Biol Arid Areas, Yangling, Shaanxi, Peoples R China |
推荐引用方式 GB/T 7714 | Mao, Hude,Li, Shumin,Wang, Zhongxue,et al. Regulatory changes in TaSNAC8-6A are associated with drought tolerance in wheat seedlings[J]. 西北农林科技大学,2020,18(4):1078-1092. |
APA | Mao, Hude.,Li, Shumin.,Wang, Zhongxue.,Cheng, Xinxiu.,Li, Fangfang.,...&Kang, Zhensheng.(2020).Regulatory changes in TaSNAC8-6A are associated with drought tolerance in wheat seedlings.PLANT BIOTECHNOLOGY JOURNAL,18(4),1078-1092. |
MLA | Mao, Hude,et al."Regulatory changes in TaSNAC8-6A are associated with drought tolerance in wheat seedlings".PLANT BIOTECHNOLOGY JOURNAL 18.4(2020):1078-1092. |
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