Hormonal interactions during early physiological partenocarpic fruitlet abscission in persimmon (Diospyros Kaki Thunb.) ‘Triumph’ and ‘Shinshu’ cultivars

Plant immunity is often defined by the immunity hormones: salicylic acid (SA), jasmonic acid (JA), and ethylene (ET). These hormones are well known for differentially regulating defence responses against pathogens. In recent years, the involvement of other plant growth hormones such as auxin, gibberellic acid, abscisic acid, and cytokinins (CKs) in biotic stresses has been recognized. Previous reports have indicated that endogenous and exogenous CK treatment can result in pathogen resistance. We show here that CK induces systemic immunity in tomato (Solanum lycopersicum), modulating cellular trafficking of the pattern recognition receptor (PRR) LeEIX2, which mediates immune responses to Xyn11 family xylanases, and promoting resistance to Botrytis cinerea and Oidium neolycopersici in an SA‐ and ET‐dependent mechanism. CK perception within the host underlies its protective effect. Our results support the notion that CK promotes pathogen resistance by inducing immunity in the host.

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“…Hormone extraction was performed according to Shaya et al . (2019). Plants were inoculated with Bc as described above.…”

Section: Methodsmentioning

confidence: 99%

Cytokinin response induces immunity and fungal pathogen resistance, and modulates trafficking of the PRR LeEIX2 in tomato

Gupta

Pizarro

Leibman‐Markus

et al. 2020

Molecular Plant Pathology

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“…Each sample comprised six independent biological repeats. Phytohormones were measured according to Shaya et al (2019). Tissue was harvested, frozen, and immediately ground to a fine powder.…”

Section: Phytohormone Analysismentioning

confidence: 99%

Cytokinin induces bacterial pathogen resistance in tomato

et al. 2020

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Phytohormones are involved in the regulation of plant responses to biotic stress. How a limited number of hormones differentially regulate defence responses and influence the outcome of plant–biotic interactions is not fully understood. In recent years, cytokinin (CK) was shown to induce plant resistance against several pathogens. In the present study, we investigated the effect of CK in inducing tomato resistance against the hemibiotrophic pathogenic bacteria Xanthomonas campestris pv. vesicatoria (Xcv) and Pseudomonas syringae pv. tomato (Pst). We demonstrate that CK enhances tomato resistance to Xcv and Pst through a process that relies on salicylic acid and ethylene signalling. CK did not directly affect the growth or biofilm formation ability of these pathogens in vitro. Overall, our work provides insight into the underlying mechanisms of CK‐induced immune responses against bacterial pathogens in tomato.

show abstract

“…Hormone extraction was performed according to (Shaya et al, 2019). Plants were 534 inoculated with B. cinerea as described above.…”

Section: Phytohormone Analysis 533mentioning

confidence: 99%

Cytokinin response induces immunity and fungal pathogen resistance in tomato by modulating cellular trafficking of PRRs

Gupta

Pizarro

Leibman‐Markus

et al. 2020

Preprint

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Hormonal interactions during early physiological partenocarpic fruitlet abscission in persimmon (Diospyros Kaki Thunb.) ‘Triumph’ and ‘Shinshu’ cultivars

Cited by 18 publications

References 27 publications

Cytokinin response induces immunity and fungal pathogen resistance, and modulates trafficking of the PRR LeEIX2 in tomato

Cytokinin response induces immunity and fungal pathogen resistance, and modulates trafficking of the PRR LeEIX2 in tomato

Cytokinin induces bacterial pathogen resistance in tomato

Cytokinin response induces immunity and fungal pathogen resistance in tomato by modulating cellular trafficking of PRRs

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