Signaling in the Tomato Immunity against Fusarium oxysporum

Molecules

JoséMaría Bellés¹  Francisco Hernández-Aparicio¹  Ismael Rodrigo¹  M.Pilar López-Gresa¹  Purificación Lisón¹ 

[1] Instituto de Biología Molecular y Celular de Plantas, Universitat Politècnica de València—Consejo Superior de Investigaciones Científicas, 46022 Valencia, Spain;

关键词: Fusarium;    tomato;    natural products;    volatiles;    biotic interaction;    metabolomics;   

DOI  :  10.3390/molecules26071818

来源: DOAJ

【 摘 要 】

New strategies of control need to be developed with the aim of economic and environmental sustainability in plant and crop protection. Metabolomics is an excellent platform for both understanding the complex plant–pathogen interactions and unraveling new chemical control strategies. GC-MS-based metabolomics, along with a phytohormone analysis of a compatible and incompatible interaction between tomato plants and Fusarium oxysporum f. sp. lycopersici, revealed the specific volatile chemical composition and the plant signals associated with them. The susceptible tomato plants were characterized by the over-emission of methyl- and ethyl-salicylate as well as some fatty acid derivatives, along with an activation of salicylic acid and abscisic acid signaling. In contrast, terpenoids, benzenoids, and 2-ethylhexanoic acid were differentially emitted by plants undergoing an incompatible interaction, together with the activation of the jasmonic acid (JA) pathway. In accordance with this response, a higher expression of several genes participating in the biosynthesis of these volatiles, such as MTS1, TomloxC,TomloxD, and AOS, as well as JAZ7, a JA marker gene, was found to be induced by the fungus in these resistant plants. The characterized metabolome of the immune tomato plants could lead to the development of new resistance inducers against Fusarium wilt treatment.

【 授权许可】

Unknown