摘要
Small RNAs(sRNAs)are a class of short,non-coding regulatory RNAs that have emerged as critical components of defense regulatory networks across plant kingdoms.Many sRNA-based technologies,such as host-induced gene silencing(HIGS),spray-induced gene silencing(SIGS),virus-induced gene silencing(VIGS),artificial microRNA(amiRNA)and synthetic trans-acting siRNA(syn-tasiRNA)-mediated RNA interference(RNAi),have been developed as disease control strategies in both monocot and dicot plants,particularly in crops.This review aims to highlight our current understanding of the roles of sRNAs including miRNAs,heterochromatic siRNAs(hc-siRNAs),phased,secondary siRNAs(phasiRNAs)and natural antisense siRNAs(nat-siRNAs)in disease resistance,and sRNAs-mediated trade-offs between defense and growth in crops.In particular,we focus on the diverse functions of sRNAs in defense responses to bacterial and fungal pathogens,oomycete and virus in crops.Further,we highlight the application of sRNA-based technologies in protecting crops from pathogens.Further research perspectives are proposed to develop new sRNAs-based efficient strategies to breed non-genetically modified(GMO),diseasetolerant crops for sustainable agriculture.
基金
supported by funding from the National Natural Science Foundation of China(91940301 to Z.H.,32070564 and 31600207 to J.L.)and Yunnan Fundamental Research Projects(202101AW070002 to J.L.).
