数字农科院2.0

Phenotype and signaling pathway analysis to explore the interaction between tomato plants and TYLCV in different organs

文献类型： 外文期刊

作者： Li T.;Zhang Z.;Liu Y.;Sun S.;Wang H.;Geng X.

作者机构：

关键词： （2-0-3）Different organs;JA;SA;Tomato;TYLCV;VIGS

期刊名称： Plant Science

ISSN： 0168-9452

年卷期： 2024 年 339 卷

页码：

收录情况： SCIE（2024版）

摘要： Tomato yellow leaf curl disease (TYLCD), caused by Tomato yellow leaf curl virus (TYLCV), is one of the most destructive diseases in tomato cultivation. By comparing the phenotypic characteristics and virus quantities in the susceptible variety 'Cooperation 909 Red Tomatoes' and the resistant variety 'Huamei 204' after inoculation with TYLCV infectious clones, our study discovered that the root, stem and leaf growth of the susceptible variety 'Cooperation 909 Red Tomatoes' were severely hindered and the resistant variety 'Huamei 204' showed growth inhibition only in roots. TYLCV accumulation in roots were significantly higher than in leaves. Further, we examined the expression of key genes in the SA and JA signalling pathways in leaves, stems and roots and found the up-regulation of SA-signalling genes in all organs of the susceptible variety after inoculation with TYLCV clones. Interestingly, SlJAZ2 in roots of the resistant variety was significantly down-regulated upon TYLCV infection. Further, we silenced the SlNPR1 and SlCOI1 genes individually using virus induced gene silencing system in tomato plants. We found that viruses accumulated to a higher level in SlNPR1 silenced plants than wild type plants, and the virus quantity in roots was significantly increased in SlCOI1 silenced plants. These results provide new insights for advancing research in understanding tomato-TYLCV interaction. © 2023 Elsevier B.V.

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