PMID- 37508331 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230731 IS - 2079-7737 (Print) IS - 2079-7737 (Electronic) IS - 2079-7737 (Linking) VI - 12 IP - 7 DP - 2023 Jun 23 TI - Cotton RSG2 Mediates Plant Resistance against Verticillium dahliae by miR482b Regulation. LID - 10.3390/biology12070898 [doi] LID - 898 AB - Cotton Verticillium wilt, mainly caused by Verticillium dahliae, has a serious impact on the yield and quality of cotton fiber. Many microRNAs (miRNAs) have been identified to participate in plant resistance to V. dahliae infection, but the exploration of miRNA's function mechanism in plant defense is needed. Here, we demonstrate that the ghr-miR482b-GhRSG2 module mediates cotton plant resistance to V. dahliae infection. Based on the mRNA degradation data and GUS fusion experiments, ghr-miR482b directedly bonds to GhRSG2 mRNA to lead to its degradation. The knockdown and overexpression of ghr-miR482b through virus-induced gene silencing strategies enhanced (decreased by 0.39-fold in disease index compared with the control) and weakened (increased by 0.46-fold) the plant resistance to V. dahliae, respectively. In addition, silencing GhRSG2 significantly increased (increased by 0.93-fold in disease index) the plant sensitivity to V. dahliae compared with the control plants treated with empty vector. The expression levels of two SA-related disease genes, GhPR1 and GhPR2, significantly decreased in GhRSG2-silenced plants by 0.71 and 0.67 times, respectively, and in ghr-miR482b-overexpressed (OX) plants by 0.59 and 0.75 times, respectively, compared with the control, whereas the expression levels of GhPR1 and GhPR2 were significantly increased by 1.21 and 2.59 times, respectively, in ghr-miR482b knockdown (KD) plants. In sum, the ghr-miR482b-GhRSG2 module participates in the regulation of plant defense against V. dahliae by inducing the expression of PR1 and PR2 genes. FAU - Wu, Pan AU - Wu P AD - State Key Laboratory of Aridland Crop Science, College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China. AD - State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China. AD - Western Agricultural Research Center, Chinese Academy of Agricultural Sciences, Changji 831100, China. FAU - Lu, Chengzhe AU - Lu C AD - State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China. FAU - Wang, Bingting AU - Wang B AD - State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China. FAU - Zhang, Feiyan AU - Zhang F AD - State Key Laboratory of Aridland Crop Science, College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China. AD - State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China. FAU - Shi, Linfang AU - Shi L AD - State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China. FAU - Xu, Yunjiao AU - Xu Y AD - State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China. FAU - Chen, Aimin AU - Chen A AD - The Key Laboratory for the Creation of Cotton Varieties in the Northwest, Ministry of Agriculture and Rural Affairs, Changji 831100, China. FAU - Si, Huaijun AU - Si H AUID- ORCID: 0000-0002-7288-2677 AD - State Key Laboratory of Aridland Crop Science, College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China. FAU - Su, Junji AU - Su J AD - State Key Laboratory of Aridland Crop Science, College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China. AD - Western Agricultural Research Center, Chinese Academy of Agricultural Sciences, Changji 831100, China. FAU - Wu, Jiahe AU - Wu J AD - State Key Laboratory of Aridland Crop Science, College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, China. AD - State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China. LA - eng GR - 2022D01E103/Natural Science Foundation of Xinjiang Uygur Autonomous Region/ GR - 31971905/National Natural Science Foundation of China/ PT - Journal Article DEP - 20230623 PL - Switzerland TA - Biology (Basel) JT - Biology JID - 101587988 PMC - PMC10376429 OTO - NOTNLM OT - GhRSG2 OT - Gossypium hirsutum OT - Verticillium dahliae OT - ghr-miR482b COIS- The authors declare no conflict of interest. EDAT- 2023/07/29 11:49 MHDA- 2023/07/29 11:50 PMCR- 2023/06/23 CRDT- 2023/07/29 01:06 PHST- 2023/05/13 00:00 [received] PHST- 2023/06/16 00:00 [revised] PHST- 2023/06/16 00:00 [accepted] PHST- 2023/07/29 11:50 [medline] PHST- 2023/07/29 11:49 [pubmed] PHST- 2023/07/29 01:06 [entrez] PHST- 2023/06/23 00:00 [pmc-release] AID - biology12070898 [pii] AID - biology-12-00898 [pii] AID - 10.3390/biology12070898 [doi] PST - epublish SO - Biology (Basel). 2023 Jun 23;12(7):898. doi: 10.3390/biology12070898.