文献类型： 外文期刊

作者： Wang, Yuanyuan ¹ ; Chen, Guang ³ ; Zeng, Fanrong ⁴ ; Han, Zhigang ⁵ ; Qiu, Cheng-Wei ¹ ; Zeng, Meng ¹ ; Yang, Zujun ⁶ ; Xu, Fei ⁴ ; Wu, Dezhi ¹ ; Deng, Fenglin ³ ; Xu, Shengchun ⁴ ; Chater, Caspar ⁷ ; Korol, Abraham ⁸ ; Shabala, Sergey ⁹ ; Wu, Feibo ¹ ; Franks, Peter ¹¹ ; Nevo, Eviatar ⁸ ; Chen, Zhong-Hua ¹² ;

作者机构： 1.Zhejiang Univ, Coll Agr & Biotechnol, Hangzhou 310058, Peoples R China

2.Huazhong Agr Univ, Coll Plant Sci & Technol, Hubei Insect Resources Utilizat & Sustainable Pest, Wuhan 430070, Peoples R China

3.Zhejiang Acad Agr Sci, Cent Lab, Hangzhou 310021, Peoples R China

4.Yangtze Univ, Coll Agr, Collaborat Innovat Ctr Grain Ind, Jingzhou 434025, Peoples R China

5.Zhejiang A&F Univ, State Key Lab Subtrop Silviculture, Hangzhou 311300, Peoples R China

6.Univ Elect Sci & Technol China, Sch Life Sci & Technol, Chengdu 611731, Sichuan, Peoples R China

7.Royal Bot Gardens, Richmond TW9 3AE, Surrey, England

8.Univ Haifa, Inst Evolut, Haifa IL-34988384, Israel

9.Univ Tasmania, Tasmanian Inst Agr, Hobart, Tas 7004, Australia

10.Univ Western Australia, Sch Biol Sci, Crawley, WA 6009, Australia

11.Univ Sydney, Sch Life & Environm Sci, Sydney, NSW 2006, Australia

12.Western Sydney Univ, Sch Sci, Penrith, NSW 2751, Australia

13.Western Sydney Univ, Hawkesbury Inst Environm, Penrith, NSW 2751, Australia

关键词： Brachypodium sp; gene silencing; genome resequencing; Hordeum spontaneum; stomatal evolution; transcriptome; Triticum dicoccoides

期刊名称：NEW PHYTOLOGIST （ 影响因子：10.323； 五年影响因子：10.768 ）

ISSN： 0028-646X

年卷期：

页码：

收录情况： SCI

摘要： The considerable drought tolerance of wild cereal crop progenitors has diminished during domestication in the pursuit of higher productivity. Regaining this trait in cereal crops is essential for global food security but requires novel genetic insight. Here, we assessed the molecular evidence for natural variation of drought tolerance in wild barley (Hordeum spontaneum), wild emmer wheat (Triticum dicoccoides), and Brachypodium species collected from dry and moist habitats at Evolution Canyon, Israel (ECI). We report that prevailing moist vs dry conditions have differentially shaped the stomatal and photosynthetic traits of these wild cereals in their respective habitats. We present the genomic and transcriptomic evidence accounting for differences, including co-expression gene modules, correlated with physiological traits, and selective sweeps, driven by the xeric site conditions on the African Slope (AS) at ECI. Co-expression gene module 'circadian rhythm' was linked to significant drought-induced delay in flowering time in Brachypodium stacei genotypes. African Slope-specific differentially expressed genes are important in barley drought tolerance, verified by silencing Disease-Related Nonspecific Lipid Transfer 1 (DRN1), Nonphotochemical Quenching 4 (NPQ4), and Brassinosteroid-Responsive Ring-H1 (BRH1). Our results provide new genetic information for the breeding of resilient wheat and barley in a changing global climate with increasingly frequent drought events.