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Elicitation of Arabidopsis thaliana resistance against pathogenic bacteria by lipopolisaccharide and salicylic acid

Shilina J., Guscha M., Molozhava O., Litvinov S., Dmitriev A.

 




SUMMARY. The effects of combined pretreatment with the elicitor (lipopolysaccharide) and a signaling molecule (salicylic acid) on the disease resistance of wild-type Arabidopsis thaliana L. plants (Col-0) and mutant lines – jin1 (deficient in jasmonate signaling), npr1 (deficient in pathogen-dependent PR genes induction) and NahG (express bacterial salicylate hydroxylase transgene) were tested. The lipopolysaccharide (LPS) had been isolated from saprophytic strain 8614 of Pseudomonas aeruginosa. Seed pretreatment by lipopolysaccharide and SA composition increased the resistance of seedlings to the infection of pathogenic strain of P. aeruginosa 9096. Compared to wild-type seedlings, the protective effect was clearer in the jin1 mutant, indicating the possibility of LPS+SA composition pretreatment to compensate JA-deficiency due to the activation of the SA-dependent signaling pathway. It is concluded that a pretreatment with composition consisting of the elicitor and the signaling molecule could affect plant cell regulatory mechanisms, in particular, compensate deficiency in one signal pathway by activating another.

Tsitologiya i Genetika 2018, vol. 52, no. 3, pp. 3-8

E-mail: j.shilina gmail.com

Shilina J., Guscha M., Molozhava O., Litvinov S., Dmitriev A. Elicitation of Arabidopsis thaliana resistance against pathogenic bacteria by lipopolisaccharide and salicylic acid, Tsitol Genet., 2018, vol. 52, no. 3, pp. 3-8.

In "Cytology and Genetics":
J. V. Shilina, M. I. Gushcha, O. S. Molozhava, S. V. Litvinov, A. P. Dmitriev Induction of Arabidopsis thaliana Resistance to Pathogenic Bacteria by Lipopolysaccharide and Salicylic Acid, Cytol Genet., 2018, vol. 52, no. 3, pp. 169–173
DOI: 10.3103/S0095452718030118


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