NDLI: Infection state of Pantoea agglomerans in the rice water weevil Lissorhoptrus oryzophilus (Coleoptera: Curculionidae)

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Applied Entomology and Zoology : Volume 51, Issue 2, May 2016

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Infection state of Pantoea agglomerans in the rice water weevil Lissorhoptrus oryzophilus (Coleoptera: Curculionidae)

Content Provider	Springer Nature Link
Author	Zhang, Jingyu Huang, Yunshan Huang, Xu Jiang, Mingxing
Copyright Year	2016
Abstract	Pantoea agglomerans is an important bacterial symbiont of insects. Despite its frequent discovery in various insects, little is known of its strain diversity and quantitative dynamics. In this study, we investigated these aspects of the bacterium in the rice water weevil, Lissorhoptrus oryzophilus Kuschel (Coleoptera: Curculionidae), a serious pest of rice in North America and East Asia. Based on the cloning and sequencing of a bacterial 16S rRNA gene, we identified three novel P. agglomerans strains from different weevil populations, with each population harboring only one strain. In female adults, gut was the dominant tissue harboring P. agglomerans. This bacterium was also present in the ovary, but its density was very low there. The bacterium was maintained at a low density across all immature stages (from egg to pupa); however, the density increased substantially as adults emerged. Its density was low in the overwintering stage, but increased stepwise after the overwintered adults were allowed to feed on host plants, i.e., when they developed from early to actively reproducing stages. The infection density returned to a low level in the adults at a late reproductive stage. In conclusion, each of the L. oryzophilus populations we investigated was probably infected by a single P. agglomerans strain, and the gut of adults is the major tissue/developmental stage to harbor this bacterium, with actively reproducing adults attaining a high level of infection.
Starting Page	561
Ending Page	569
Page Count	9
File Format	PDF
ISSN	00036862
Journal	Applied Entomology and Zoology
Volume Number	51
Issue Number	4
e-ISSN	1347605X
Language	English
Publisher	Springer Japan
Publisher Date	2016-08-09
Publisher Place	Tokyo
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Gut Symbiont Bacterial density Gammaproteobacteria Strain diversity Entomology Agriculture Applied Ecology Plant Pathology Zoology Environmental Management
Content Type	Text
Resource Type	Article
Subject	Insect Science

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