Plant growth-promoting rhizobacterium Bacillus cereus AR156 induced systemic resistance against multiple pathogens by priming of camalexin synthesis.

Autor: Li ZJ; Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China.; Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing, China.; Key Laboratory of Integrated Management of Crop Disease and Pests, Nanjing Agricultural University, Nanjing, China., Tang SY; Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China.; Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing, China.; Key Laboratory of Integrated Management of Crop Disease and Pests, Nanjing Agricultural University, Nanjing, China., Gao HS; Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China.; Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing, China.; Key Laboratory of Integrated Management of Crop Disease and Pests, Nanjing Agricultural University, Nanjing, China., Ren JY; Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China.; Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing, China.; Key Laboratory of Integrated Management of Crop Disease and Pests, Nanjing Agricultural University, Nanjing, China., Xu PL; Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China.; Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing, China.; Key Laboratory of Integrated Management of Crop Disease and Pests, Nanjing Agricultural University, Nanjing, China., Dong WP; Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China.; Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing, China.; Key Laboratory of Integrated Management of Crop Disease and Pests, Nanjing Agricultural University, Nanjing, China., Zheng Y; Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China.; Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing, China.; Key Laboratory of Integrated Management of Crop Disease and Pests, Nanjing Agricultural University, Nanjing, China., Yang W; Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huai'an, China.; Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Huaiyin Normal University, Huai'an, China., Yu YY; Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China.; Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing, China.; Key Laboratory of Integrated Management of Crop Disease and Pests, Nanjing Agricultural University, Nanjing, China., Guo JH; Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China.; Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing, China.; Key Laboratory of Integrated Management of Crop Disease and Pests, Nanjing Agricultural University, Nanjing, China., Luo YM; Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huai'an, China.; Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Huaiyin Normal University, Huai'an, China., Niu DD; Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China.; Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing, China.; Key Laboratory of Integrated Management of Crop Disease and Pests, Nanjing Agricultural University, Nanjing, China.; Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huai'an, China., Jiang CH; Department of Plant Pathology, Nanjing Agricultural University, Nanjing, China.; Engineering Center of Bioresource Pesticide in Jiangsu Province, Nanjing, China.; Key Laboratory of Integrated Management of Crop Disease and Pests, Nanjing Agricultural University, Nanjing, China.; Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huai'an, China.
Jazyk: angličtina
Zdroj: Plant, cell & environment [Plant Cell Environ] 2024 Jan; Vol. 47 (1), pp. 337-353. Date of Electronic Publication: 2023 Sep 29.
DOI: 10.1111/pce.14729
Abstrakt: Phytoalexins play a crucial role in plant immunity. However, the mechanism of how phytoalexin is primed by beneficial microorganisms against broad-spectrum pathogens remains elusive. This study showed that Bacillus cereus AR156 could trigger ISR against broad-spectrum disease. RNA-sequencing and camalexin content assays showed that AR156-triggered ISR can prime the accumulation of camalexin synthesis and secretion-related genes. Moreover, it was found that AR156-triggered ISR elevates camalexin accumulation by increasing the expression of camalexin synthesis genes upon pathogen infection. We observed that the priming of camalexin accumulation by AR156 was abolished in cyp71a13 and pad3 mutants. Further investigations reveal that in the wrky33 mutant, the ability of AR156 to prime camalexin accumulation is abolished, and the mediated ISR against the three pathogens is significantly compromised. Furthermore, PEN3 and PDR12, acting as camalexin transporters, participate in AR156-induced ISR against broad-spectrum pathogens differently. In addition, salicylic acid and JA/ET signalling pathways participate in AR156-primed camalexin synthesis to resist pathogens in different forms depending on the pathogen. In summary, B. cereus AR156 triggers ISR against Botrytis cinerea, Pst DC3000 and Phytophthora capsici by priming camalexin synthesis. Our study provides deeper insights into the significant role of camalexin for AR156-induced ISR against broad-spectrum pathogens.
(© 2023 John Wiley & Sons Ltd.)
Databáze: MEDLINE
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