The tepary bean genome provides insight into evolution and domestication under heat stress

背景回顾：Tepary bean (Phaseolus acutifolis A. Gray), native to the Sonoran Desert, is highly adapted to heat and drought. It is a sister species of common bean (Phaseolus vulgaris L.), the most important legume protein source for direct human consumption, and whose production is threatened by climate change. 

主要研究：Here, we report on the tepary genome including exploration of possible mechanisms for resilience to moderate heat stress and a reduced disease resistance gene repertoire, consistent with adaptation to arid and hot environments. 

结论与展望：Extensive collinearity and shared gene content among these Phaseolus species will facilitate engineering climate adaptation in common bean, a key food security crop, and accelerate tepary bean improvement.

 摘 要 

宽叶菜豆（Phaseolus acutifolis A. Gray）原产于索诺兰沙漠，能够很好地适应沙漠的炎热和干旱环境。宽叶菜豆是普通菜豆（Phaseolus vulgaris）的姊妹种，而普通菜豆是人类可直接食用的最重要豆类蛋白质来源，其生产受到气候变化的威胁。本文中，作者报告了宽叶菜豆的基因组，并发现了其中可能与适度热胁迫相关的机制以及宽叶菜豆基因组中抗病基因减少，这与该植物适应干旱和炎热的环境一致。这些菜豆属种间存在广泛的共线性，并且共享了很多的基因，这有助于普通菜豆这一重要粮食安全作物的气候适应改造，并加速宽叶菜豆的改良。

 通讯作者 

** Phillip E. McClean **