期刊
JOURNAL OF INSECT PHYSIOLOGY
卷 59, 期 1, 页码 26-32出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jinsphys.2012.11.004
关键词
Spodoptera litura; Odorant receptor; Rhodojaponin III; Oviposition deterring; RNA interference
资金
- National Natural Science Foundation, PR China [31071713]
Specific behaviors of insects are stimulated by the recognition of chemicals in the external environment by sensilla on chemoreceptive organs. Rhodojaponin III is a nonvolatile natural botanical insecticide, which has an intense effect of deterring oviposition activity against many insects. This study aimed to determine whether the Or83b protein is involved in the recognition of rhodojaponin III. The SlOr83b protein has a conserved seven-transmembrane domain and a putative receptor/receptor interaction loop. The Or83b mRNA is first transcribed in 1st larvae, and expressed in later larval stages. A high level of Or83b mRNA is expressed in pupal and adult stages. Knockdown of SlOr83b expression was achieved through RNAi by injecting double-stranded RNA (dsRNA) into the 8th day pupae, and oviposition significantly increased on rhodojaponin III treated cabbage leaves. These results suggest that Or83b is critical for insects to identify the nonvolatile the insecticide rhodojaponin III. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.
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