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|標題:||Methyl jasmonate induced responses in four plant species and its effect on Spodoptera litura Fab. performance||作者:||Tan, C.W.
|關鍵字:||Induced defense;Polyphenol oxidase;Tiypsin inhibitor;Tobacco cutworm;Relative growth rate;leaf polyphenol oxidase;induced resistance;lycopersicon-esculentum;protease inhibitors;tomato plants;proteinase-inhibitors;mediated;interactions;insect herbivores;trypsin-inhibitor;2 specialist||Project:||Journal of Asia-Pacific Entomology||期刊/報告no：:||Journal of Asia-Pacific Entomology, Volume 14, Issue 3, Page(s) 263-269.||摘要:||
Defensive proteins, such as polyphenol oxidase (PPO) and trypsin inhibitor (TI), are induced by herbivore wounding and exogenous methyl jasmonate application in various plant species. This study was conducted to measure induction of PPO and TI in radish, sweet pepper, tomato, and water spinach plants following herbivore wounding (I), methyl jasmonate application (M), and a combination of the two treatments (M + I). The effect of induced responses was also examined against third instar Spodoptera litura Fab. PPO activity was induced in radish by treatment I only; in sweet pepper, by treatments land M; in tomato, by treatments I, M, and M + I; and in water spinach, by treatments M and M + I. The activity of TI was enhanced 1.2-1.4-fold in radish, sweet pepper, and tomato by M and M + I treatments, whereas in water spinach, it was enhanced 1.2-fold by all 3 treatments. The relative growth rate (RGR) of S. litura was reduced by 53% on radish plants following M treatment only. It was reduced by 37% and 42% on sweet paper plants following M and M + I treatment, respectively. RGR was significantly reduced on test tomato plants following I, M, and M + I treatments. The RGR of S. litura was unaffected on water spinach plants following any treatment. Collectively, the results of this study indicated that induction of plant defensive proteins in response to S. litura feeding or exogenous methyl jasmonate application varied among plant species, which further affected the induced plant resistance to the caterpillars. (C) Korean Society of Applied Entomology, Taiwan Entomological Society and Malaysian Plant Protection Society, 2011. Published by Elsevier B.V. All rights reserved.
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