Chitosan-induced, ethylene-independent resistance does not reduce crop yield in bean plants
Articolo
Data di Pubblicazione:
2010
Citazione:
Chitosan-induced, ethylene-independent resistance does not reduce crop yield in bean plants / M. Iriti, G. Castorina, S. Vitalini, I. Mignani, C. Soave, G. Fico, F. Faoro. - In: BIOLOGICAL CONTROL. - ISSN 1049-9644. - 54:3(2010), pp. 241-247. [10.1016/j.biocontrol.2010.05.012]
Abstract:
Some unexplored mechanisms of chitosan (CHT)-induced resistance have been investigated by using the
pathosystem Tobacco necrosis virus (TNV) – Phaseolus vulgaris L. In particular, it was shown that CHT does
not exert a direct antiviral activity and that stomatal uptake of the compound is determinant for the
induction of plant defence mechanisms against TNV. By a chemical approach, using ethylene inhibitors
or donors, it was also demonstrated that these defence mechanisms do not involve ethylene pathway.
Conversely, the infection with TNV stimulated the production of this hormone in leaf tissues, associated
with the development of necrotic lesions. Finally, in open field trials, CHT treatments did not incur fitness
costs in bean plants, probably due to the activation of priming mechanisms as opposed to the direct resistance
induction.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Chitosan; Ethylene; Fitness costs; Induced resistance; Innate immunity; Phaseolus vulgaris; Tobacco necrosis virus (TNV)
Elenco autori:
M. Iriti, G. Castorina, S. Vitalini, I. Mignani, C. Soave, G. Fico, F. Faoro
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