禾谷镰孢复合种(Fusarium graminearum species complex,FGSC)引起的小麦赤霉病是全球性重大作物病害,且病菌能够产生多种毒素威胁食品安全。在病害侵染循环中,病原菌通过有性生殖产生子囊孢子作为主要初侵染源。近年研究发现,禾谷镰孢...禾谷镰孢复合种(Fusarium graminearum species complex,FGSC)引起的小麦赤霉病是全球性重大作物病害,且病菌能够产生多种毒素威胁食品安全。在病害侵染循环中,病原菌通过有性生殖产生子囊孢子作为主要初侵染源。近年研究发现,禾谷镰孢通过RNA水平变异(如:可变剪接、可变转录起始、可变多聚腺苷酸化和A-to-I mRNA编辑)动态调控其生活史策略。其中,A-to-I mRNA编辑由Tad2-Tad3-Ame1复合体介导,特异性地发生于有性生殖阶段,通过部分修饰产生蛋白变体,显著增强子囊孢子发育过程中的环境适应性。RNA编辑还通过修复多效性基因的提前终止密码子缓解生活史权衡,并调控DNA突变和减数分裂重组,驱动快速进化。这些发现揭示了RNA变异在病原菌环境适应中的核心作用,为开发靶向有性生殖的新型防控策略(如编辑抑制剂)提供了理论依据。展开更多
The emergence of novel phytopathogens and the accelerated spread of plant diseases to new regions,driven by global climate change,constitute significant threats to agricultural resources.Rice,a major tropical staple c...The emergence of novel phytopathogens and the accelerated spread of plant diseases to new regions,driven by global climate change,constitute significant threats to agricultural resources.Rice,a major tropical staple crucial for global food security,possesses six transcription factor superfamilies-AP2/ERF,bHLH,bZIP,MYB,NAC,and WRKY-that function in innate immunity against pathogens.We review their biological functions and regulatory mechanisms in rice immunity.展开更多
基金supported by Research Program for Agricultural Science and Technology Development,Republic of Korea(PJ01570601)the Fellowship Program(PJ01661001)of the National Institute of Agricultural Sciences,Republic of KoreaRural Development Administration,Republic of Korea.
文摘The emergence of novel phytopathogens and the accelerated spread of plant diseases to new regions,driven by global climate change,constitute significant threats to agricultural resources.Rice,a major tropical staple crucial for global food security,possesses six transcription factor superfamilies-AP2/ERF,bHLH,bZIP,MYB,NAC,and WRKY-that function in innate immunity against pathogens.We review their biological functions and regulatory mechanisms in rice immunity.
