The master role of siRNAs in plant immunity

被引:31
作者
Kong, Xiuzhen [1 ]
Yang, Meng [1 ]
Le, Brandon H. [2 ]
He, Wenrong [3 ]
Hou, Yingnan [1 ]
机构
[1] Shanghai Jiao Tong Univ, Sch Agr & Biol, Shanghai Collaborat Innovat Ctr Agri Seeds, Shanghai 200240, Peoples R China
[2] Univ Calif Riverside, Inst Integrat Genome Biol, Dept Bot & Plant Sci, Riverside, CA 92521 USA
[3] Salk Inst Biol Studies, Plant Mol & Cellular Biol Lab, 10010 N Torrey Pines Rd, La Jolla, CA 92037 USA
关键词
host-induced gene silencing (HIGS); plant immunity; small RNA; trans-species RNAi; DICER-LIKE PROTEINS; SMALL RNAS; EXTRACELLULAR VESICLES; DNA-METHYLATION; VERTICILLIUM WILT; FUNGAL PATHOGEN; VIRUS-INFECTION; GENE; RESISTANCE; MICRORNAS;
D O I
10.1111/mpp.13250
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Gene silencing mediated by small noncoding RNAs (sRNAs) is a fundamental gene regulation mechanism in eukaryotes that broadly governs cellular processes. It has been established that sRNAs are critical regulators of plant growth, development, and antiviral defence, while accumulating studies support positive roles of sRNAs in plant defence against bacteria and eukaryotic pathogens such as fungi and oomycetes. Emerging evidence suggests that plant sRNAs move between species and function as antimicrobial agents against nonviral parasites. Multiple plant pathosystems have been shown to involve a similar exchange of small RNAs between species. Recent analysis about extracellular sRNAs shed light on the understanding of the selection and transportation of sRNAs moving from plant to parasites. In this review, we summarize current advances regarding the function and regulatory mechanism of plant endogenous small interfering RNAs (siRNAs) in mediating plant defence against pathogen intruders including viruses, bacteria, fungi, oomycetes, and parasitic plants. Beyond that, we propose potential mechanisms behind the sorting of sRNAs moving between species and the idea that engineering siRNA-producing loci could be a useful strategy to improve disease resistance of crops.
引用
收藏
页码:1565 / 1574
页数:10
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