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応用生物科学科+遺伝子実験支援部門共催セミナーを開催いたします。

ご講演者：Zhong-Hua Chen教授 (Western Sydney University, Penrith, Australia)
日時　　：2023年4月19日（水）　午後3時半－5時
場所　　：繊維学部講義棟　23番講義室

演題　　：Genomic, Evolutionary, and Functional Analysis of Stomatal Regulation in Wild and Cultivated Barley and Wheat
要旨　　：（以下）

Abstract: 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. Some important genes for drought tolerance were verified by silencing and overexpressing of genes in barley and Arabidopsis. Our results provide new genetic information for the breeding of resilient wheat and barley in a changing global climate with increasingly frequent drought events.

ウエスタンシドニー大学のZhong-Hua Chen教授は、作物の塩や乾燥ストレス耐性研究のエキスパートで、セミナーでは、オオムギやコムギの野生種の乾燥耐性メカニズムと気孔開閉の制御に関する興味深い内容をお話してくださる予定です。