| Title: | Exogenous Calcium Suppresses the Oviposition Choices of Frankliniella occidentalis (Thysanoptera: Thripidae) and Promotes the Attraction of Orius similis (Hemiptera: Anthocoridae) by Altering Volatile Blend Emissions in Kidney Bean Plants |
| Author(s): | Huang WQ; Zeng G; Zhi JR; Qiu XY; Yin ZJ; |
| Address: | "Guizhou Provincial Key Laboratory for Agricultural Pest Management in the Mountainous Region, Institute of Entomology, Guizhou University, Guiyang 550025, China. Department of Resources and Environment, Moutai Institute, Renhuai 564507, China" |
| ISSN/ISBN: | 2075-4450 (Print) 2075-4450 (Electronic) 2075-4450 (Linking) |
| Abstract: | "Frankliniella occidentalis is a destructive pest of horticultural plants, while Orius similis is a natural enemy of thrips. It has been demonstrated that exogenous calcium could induce plant defenses against herbivore attack. We examined whether CaCl(2) supplementation altered the volatile emissions of kidney bean plants, which influence the oviposition preference of F. occidentalis. We also assessed the influence of volatile cues on O. similis. Using Y-tube olfactometer tests, we found that exogenous CaCl(2) treatment inhibited the selectivity of F. occidentalis but attracted O. similis. In addition, CaCl(2) treatment reduced the oviposition preference of F. occidentalis. Gas chromatography-mass spectrometry analyses revealed that CaCl(2) treatment altered the number and relative abundance of the volatile compounds in kidney bean plants and that (E)-2-hexen-1-ol, 1-octen-3-ol, beta-lonone, and (E,E)-2,4-hexadienal might be potential olfactory cues. Furthermore, the results of the six-arm olfactometer test indicated that 1-octen-3-ol (10(-2) muL/muL), beta-lonone (10(-2) muL/muL), and (E,E)-2,4-hexadienal (10(-3) muL/muL) repelled F. occidentalis but attracted O. similis. Overall, our results suggested that exogenous CaCl(2) treatment induced defense responses in kidney bean plants, suggesting that CaCl(2) supplementation may be a promising strategy to enhance the biological control of F. occidentalis" |
| Keywords: | Frankliniella occidentalis Orius similis exogenous calcium gas chromatography-mass spectrometry herbivore-induced plant volatiles induced defense olfactory response; |
| Notes: | "PubMed-not-MEDLINEHuang, Wan-Qing Zeng, Guang Zhi, Jun-Rui Qiu, Xin-Yue Yin, Zhen-Juan eng Switzerland 2022/12/24 Insects. 2022 Dec 6; 13(12):1127. doi: 10.3390/insects13121127" |
