Organic hydroponics induces systemic resistance against the air-borne pathogen, Botrytis cinerea (grey mould)
Penulis/Author
yufita dwi chinta (1); Yumi Eguchi (2); Prof. Ani Widiastuti, S.P., M.P., Ph.D. (3); Makoto Shinohara (4); Tatsuo Sato (5)
Tanggal/Date
27 2015
Kata Kunci/Keyword
Abstrak/Abstract
Here we propose that organic hydroponics trigger induced systemic resistance (ISR) in lettuce
against air-borne Botrytis cinerea, which causes grey mould. We compared effects of organic
and chemical hydroponics, assessed presence of ISR elicitors in the hydroponic nutrient
solution, and investigated molecular mechanism of ISR. Organic hydroponics significantly
reduced grey mould lesions in lettuce (cultivated hydroponically) and cucumber (cultivated in
soil and foliar sprayed with nutrient solution). The 1-aminocyclopropane-1-carboxylic acid
synthase gene in lettuce and lipoxygenase and ethylene receptor-related gene in cucumber
showed heightened expression, suggesting that the jasmonic acid/ethylene (JA/ET)-signalling
pathway was involved in ISR for both crops. Low salicylic acid ?-glucoside levels confirmed
role of the ISR signalling pathway.
