β-Glucosidase treatment and infestation by the rice brown planthopper Nilaparvata lugens elicit similar signaling pathways in rice plants |
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基金项目: | the National Basic Research Program of China (Grant No. 2006CB102005),the National Natural Science Foundation of China (Grant No. 30270233),the Division of Science and Technology of Zhejiang Province (Grant No. 2006C30040),the Program for New Century Excellent Talents of the Ministry of Education of China (Grant No. NCET-04-0534),the Innovation Research Team Program of the Ministry of Education of China (Grant No. IRT0535) |
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摘 要: | β-Glucosidase has been reported to induce the production of herbivore-induced plant volatiles. How-ever, how it works remains unclear. Here, we investigated the levels of salicylic acid (SA), jasmonic acid (JA), ethylene, and H2O2, all of which are known signaling molecules that play important roles in in-duced plant defense in rice plants treated with β-glucosidase, and compared these to levels in plants infested by the rice brown planthopper Nilaparvata lugens (Stl). Results showed that wounding and treatment by β-glucosidase increased the levels of SA, ethylene, and H2O2, but not JA, in all plants compared to control plants. The signaling pathways activated by β-glucosidase treatment are similar to those activated by an infestation by N. lugens, although the magnitude and timing of the signals elicited by the two treatments are different. This may explain why both treatments have similar volatile profiles and are equally attractive to the parasitoid Anagrus nilaparvatae Pang et Wang.
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