Expressions of Defense Signal Pathway Genes in Tomato Plant Induced by <i>Ralstonia solanacearum</i> of Different Virulence

ZHENG Xuefang; WANG Zirang; ZHU Yujing; CHEN Yanping; WANG Jieping; LIU Bo

doi:10.19303/j.issn.1008-0384.2022.01.011

Volume 37 Issue 1

Jan. 2022

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Article Navigation > Fujian Journal of Agricultural Sciences > 2022 > 37(1): 79-83

ZHENG X F, WANG Z R, ZHU Y J, et al. Expressions of Defense Signal Pathway Genes in Tomato Plant Induced by Ralstonia solanacearum of Different Virulence [J]. Fujian Journal of Agricultural Sciences，2022，37（1）：79−83 doi: 10.19303/j.issn.1008-0384.2022.01.011

Citation:

ZHENG X F, WANG Z R, ZHU Y J, et al. Expressions of Defense Signal Pathway Genes in Tomato Plant Induced by Ralstonia solanacearum of Different Virulence [J]. Fujian Journal of Agricultural Sciences，2022，37（1）：79−83 doi: 10.19303/j.issn.1008-0384.2022.01.011

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Expressions of Defense Signal Pathway Genes in Tomato Plant Induced by Ralstonia solanacearum of Different Virulence

doi: 10.19303/j.issn.1008-0384.2022.01.011

1.
Agrobiologic Resource Research Institute, Fujian Academy of Agriculture Sciences, Fuzhou, Fujian　350003, China
2.
Department of Biochemistry and Biotechnology, School of Life Sciences, Xiamen University, Xiamen, Fujian　361102, China

Received Date: 2021-08-12
Rev Recd Date: 2021-12-21

Available Online: 2022-01-21

Publish Date: 2022-01-28

Abstract

Abstract

Objective Expressions of the defense-related genes in tomato plant induced by Ralstonia solanacearum of varied pathogenicity were studied to understand the biocontrol mechanisms of the avirulent FJAT1458. Method Real-time PCR was used to determine the expressions of gluA and PR-1a in the salicylic acid signal pathway, loxA and pin2 in the jasmonic acid signal pathway, and Osm and PR-1a in the ethylene signal pathway in tomato plants inoculated with the virulent strain FJAT91, the avirulent strain FJAT1458, or sterile water (CK) for 0, 3, 6, 12, 24, 36, 48, and 72 h. Result Both avirulent and virulent strains could induce expressions of gluA, PR-1a, loxA, pin2, Osm, and PR-1a. However, except for PR-1a and Osm, the gene expressions induced by FJAT1458 were significantly higher than those by FJAT91. Both FJAT1458 and FJAT91 inoculations raised the expressions of gluA and PR-1a to a peak followed by a decline in 12 h. The expressions of loxA and pin2 induced by FJAT1458 induction were significantly higher than CK, but FJAT91 did only initially. On the other hand, FJAT91 produced a significantly higher Osm expression than either FJAT1458 or CK, excluding the 72 h inoculation. And in the 3 h inoculation it rendered a PR-1b expression significantly stronger than FJAT1458 at 260.46 times higher than CK. Conclusion Both avirulent and virulent R. solanacearum could induce expressions of the defense-related genes in tomato plants in varied degrees. The transcriptomic method applied in this study could conceivably be used to unveil additional differently expressed genes associated with the pathways in tomato plants in the future.
- Ralstonia solanacearum,
- tomato bacterial wilt,
- salicylic acid pathway,
- jasmonic acid pathway,
- ethylene pathway,
- defense genes

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References(24)

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