Cover image: Pictured is an aerial drop of fire retardant onto a wildfire in Los Padres National Forest, California, in 2008. A collection of articles in the Climate Change and California Sustainability–Challenges and Solutions Special Feature highlights recent research on improving climate adaptation, mitigation, and resilience in California to support the state’s ecological, social, and economic sustainability. Together, the articles explore methods and solutions to generate co-benefits for California’s diverse population and ecosystems in the face of extreme weather, wildfire, sea level rise, and health effects driven by climate change. See the Introduction to the Special Feature, e2405458121. Image credit: the Western Ecological Research Center; photo by Daniel Lindsay.
PJ:中国农大发现一个调控玉米干旱胁迫耐受性的新机制
干旱胁迫抑制玉米生长发育。本研究发现了一个SUMO E2-conjugating enzyme-ZmSCE1a正调控玉米对干旱胁迫的耐受性。
E3 SUMO ligase ZmMMS21 与 ZmSCE1a协同泛素化histone acetyltransferase complexes (ZmGCN5-ZmADA2b)，这会提高ZmGCN5的稳定性。过表达ZmGCN5也可以提高植物对干旱胁迫的耐受性。
生理水平上看，该基因会降低超氧阴离子和丙二醛的水平。
从基因表达上看， ZmGCN5会诱导逆境相关基因和ABA相关基因的表达，同时还会提高幼苗ABA水平。
原文：ZmSCE1a positively regulates drought tolerance by enhancing the stability of ZmGCN5
