Priming of plant resistance by natural compounds. Hexanoic acid as a model

Frontiers in Plant Science

Ivan eFiniti¹  Maria de la O eLeyva¹  Paz eAranega Bou¹  Carmen eGonzález Bosch¹  Pilar eGarcía Agustín² 

[1] Departamento de Bioquimica. Universidad de Valencia. IATA (CSIC);Grupo de Bioquímica y Biotecnología. Departamento de Ciencias Agrarias y del Medio Natural, Universitat Jaume I;

关键词: Oxidative Stress;    Vitamins;    priming;    Botrytis cinerea;    natural inducers;    hexanoic acid;   

DOI  :  10.3389/fpls.2014.00488

来源: DOAJ

【 摘 要 】

Some alternative control strategies of currently emerging plant diseases are based on the use of resistance inducers. This review highlights the recent advances made in the characterization of natural compounds that induce resistance by a priming mechanism. These include vitamins, chitosans, oligogalacturonides, volatile organic compounds, azelaic and pipecolic acid, among others. Overall, other than providing novel disease control strategies that meet environmental regulations, natural priming agents are valuable tools to help unravel the complex mechanisms underlying the induced resistance phenomenon. The data presented in this review reflect the novel contributions made from studying these natural plant inducers, with special emphasis placed on hexanoic acid (Hx), proposed herein as a model tool for this research field. Hx is a potent natural priming agent of proven efficiency in a wide range of host plants and pathogens. It can early activate broad-spectrum defenses by inducing callose deposition and the SA and JA pathways. Later it can prime pathogen-specific responses according to the pathogen’s lifestyle. Interestingly, Hx primes redox-related genes to produce an anti-oxidant protective effect, which might be critical for limiting the infection of necrotrophs. Our Hx-induced resistance (Hx-IR) findings also strongly suggest that it is an attractive tool for the molecular characterization of the plant alarmed state, with the added advantage of it being a natural compound.

【 授权许可】

Unknown