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Front Microbiol

Title:		Effect of Oxygen on Verbenone Conversion From cis-Verbenol by Gut Facultative Anaerobes of Dendroctonus valens
Author(s):		Cao Q; Wickham JD; Chen L; Ahmad F; Lu M; Sun J;
Address:		"State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China. University of Chinese Academy of Sciences, Beijing, China. Department of Biosciences, COMSATS Institute of Information Technology, Islamabad, Pakistan"
Journal Title:		Front Microbiol
Year:		2018
Volume:		20180316
Issue:
Page Number:		464 -
DOI:		10.3389/fmicb.2018.00464
ISSN/ISBN:		1664-302X (Print) 1664-302X (Electronic) 1664-302X (Linking)
Abstract:		"Since its introduction from North America, Dendroctonus valens LeConte has become a destructive forest pest in China. Although gut aerobic bacteria have been investigated and some are implicated in beetle pheromone production, little is known about the abundance and significance of facultative anaerobic bacteria in beetle gut, especially with regards to effects of oxygen on their role in pheromone production. In this study, we isolated and identified gut bacteria of D. valens adults in an anaerobic environment, and further compared their ability to convert cis-verbenol into verbenone (a multi-functional pheromone of D. valens) under different O(2) concentrations. Pantoea conspicua, Enterobacter xiangfangensis, Staphylococcus warneri were the most frequently isolated species among the total of 10 species identified from beetle gut in anaerobic conditions. Among all isolated species, nine were capable of cis-verbenol to verbenone conversion, and the conversion efficiency increased with increased oxygen concentration. This O(2)-mediated conversion of cis-verbenol to verbenone suggests that gut facultative anaerobes of D. valens might play an important role in the frass, where there is higher exposure to oxygen, hence the higher verbenone production. This claim is further supported by distinctly differential oxygen concentrations between gut and frass of D. valens females"
Keywords:		cis-verbenol gut facultative anaerobes oxygen environments pheromone production verbenone;
Notes:		"PubMed-not-MEDLINECao, Qingjie Wickham, Jacob D Chen, Li Ahmad, Faheem Lu, Min Sun, Jianghua eng Switzerland 2018/04/05 Front Microbiol. 2018 Mar 16; 9:464. doi: 10.3389/fmicb.2018.00464. eCollection 2018"