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Genome-wide identification, characterization and expression analysis of key gene families in RNA silencing in centipedegrass.
BMC Genomics
November 2024
College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu , Sichuan, 611130, China.
Article Synopsis
- - The study investigates key RNA silencing components (AGO, DCL, and RDR) in centipedegrass, a turfgrass species, highlighting their roles in small RNA generation and stress responses, which are crucial for plant development.
- - Researchers identified 20 AGO, 6 DCL, and 10 RDR genes through genome-wide analysis, examining their characteristics, evolutionary relationships, and expression patterns under various stress conditions (cold, salt, drought).
- - Findings show that most genes are upregulated during stress, suggesting specialized functions, and the comprehensive analysis lays the groundwork for future studies on RNA silencing and stress responses in turfgrass.
Resistance gene Ty-1 restricts TYLCV infection in tomato by increasing RNA silencing.
Virol J
October 2024
Centre SÈVE, Département de Biologie, Université de Sherbrooke, 2500 Blvd.de l'Université, Sherbrooke, QC, J1K 2R1, Canada.
A major antiviral mechanism in plants is mediated by RNA silencing through the action of DICER-like (DCL) proteins, which cleave dsRNA into discrete small RNA fragments, and ARGONAUTE (AGO) proteins, which use the small RNAs to target single-stranded RNA. RNA silencing can also be amplified through the action of RNA-dependent RNA polymerases (RDRs), which use single stranded RNA to generate dsRNA that in turn is targeted by DCL proteins. As a counter-defense, plant viruses encode viral suppressors of RNA silencing (VSRs) that target different components in the RNA silencing pathway.
View Article and Find Full Text PDFRNA interference-based strategies to control Botrytis cinerea infection in cultivated strawberry.
Plant Cell Rep
July 2024
Department of Agricultural, Food and Environmental Sciences, Università Politecnica delle Marche, Ancona, Italy.
Gene silencing of BcDCL genes improves gray mold disease control in the cultivated strawberry. Gene silencing technology offers new opportunities to develop new formulations or new pathogen-resistant plants for reducing impacts of agricultural systems. Recent studies offered the proof of concept that the symptoms of gray mold can be reduced by downregulating Dicer-like 1 (DCL1) and 2 (DCL2) genes of Botrytis cinerea.
View Article and Find Full Text PDFGenome-wide identification of gene families related to miRNA biogenesis in L. and their possible role during heat stress.
PeerJ
July 2024
CTAOV, Centro de Investigación en Alimentación y Desarrollo, A.C., Hermosillo, Sonora, México.
Mango is a popular tropical fruit that requires quarantine hot water treatment (QHWT) for postharvest sanitation, which can cause abiotic stress. Plants have various defense mechanisms to cope with stress; miRNAs mainly regulate the expression of these defense responses. Proteins involved in the biogenesis of miRNAs include DICER-like (DCL), ARGONAUTE (AGO), HYPONASTIC LEAVES 1 (HYL1), SERRATE (SE), HUA ENHANCER1 (HEN1), HASTY (HST), and HEAT-SHOCK PROTEIN 90 (HSP90), among others.
View Article and Find Full Text PDFGenome-wide identification of phasiRNAs in Arabidopsis thaliana, and insights into biogenesis, temperature sensitivity, and organ specificity.
Plant Cell Environ
October 2024
College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China.
The knowledge of biogenesis and target regulation of the phased small interfering RNAs (phasiRNAs) needs continuous update, since the phasiRNA loci are dynamically evolved in plants. Here, hundreds of phasiRNA loci of Arabidopsis thaliana were identified in distinct tissues and under different temperature. In flowers, most of the 24-nt loci are RNA-dependent RNA polymerase 2 (RDR2)-dependent, while the 21-nt loci are RDR6-dependent.
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