文献类型： 外文期刊

作者： Zhang, Zhen-yu ¹ ; Ali, Muhammad Waqar ² ; Saqib, Hafiz Sohaib Ahmed ³ ; Liu, Sheng-xuan ⁴ ; Yang, Xin ¹ ; Li, Qin; ¹ ;

作者机构： 1.Huazhong Agr Univ, Coll Plant Sci & Technol, Inst Urban & Hort Entomol, State Key Lab Agr Microbiol,Key Lab Hort Plant Bi, Wuhan, Peoples R China

2.Hubei Acad Agr Sci, Inst Fruit & Tea, Wuhan, Peoples R China

3.Fujian Agr & Forestry Univ, State Key Lab Ecol Pest Control Fujian & Taiwan C, Fuzhou, Peoples R China

4.Yangtze Univ, Coll Life Sci, Jingzhou, Peoples R China

关键词： Panonychus citri(McGregor); spider mites; developmental stages; 16S rDNA amplicon pyrosequencing; dynamics of bacterial community; bacterial metabolism

期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：5.64； 五年影响因子：6.32 ）

ISSN： 1664-302X

年卷期： 2020 年 11 卷

页码：

收录情况： SCI

摘要： As one of the most detrimental citrus pests worldwide, the citrus red mite,Panonychus citri(McGregor), shows extraordinary fecundity, polyphagia, and acaricide resistance, which may be influenced by microbes as other arthropod pests. However, the community structure and physiological function of microbes inP. citriare still largely unknown. Here, the high-throughput sequencing of 16S rDNA amplicons was employed to identify and compare the profile of bacterial communities across the larva, protonymph, deutonymph, and adult stages ofP. citri. We observed a dominance of phylums Proteobacteria and Firmicutes, and classes alpha-, gamma-, beta-Proteobacteria and Bacilli in the bacterial communities across the host lifespan. Based on the dynamic analysis of the bacterial community structure, a significant shift pattern between the immature (larva, protonymph, and deutonymph) and adult stages was observed. Accordingly, among the major families (and corresponding genera), although the relative abundances of Pseudomonadaceae (Pseudomonas), Moraxellaceae (Acinetobacter), and Sphingobacteriaceae (Sphingobacterium) were consistent in larva to deutonymph stages, they were significantly increased to 30.18 +/- 8.76% (30.16 +/- 8.75%), 20.78 +/- 10.86% (18.80 +/- 10.84%), and 11.71 +/- 5.49% (11.68 +/- 5.48%), respectively, in adult stage, which implied the important function of these bacteria on the adults' physiology. Actually, the functional prediction of bacterial communities and Spearman correlation analysis further confirm that these bacteria had positively correlations with the pathway of "lipid metabolism" (including eight sublevel pathways) and "metabolism of cofactors and vitamins" (including five sublevel pathways), which all only increased in adult stages. In addition, the bacterial communities were eliminated by using broad-spectrum antibiotics, streptomycin, which significantly suppressed the survival and oviposition ofP. citri. Overall, we not only confirmed the physiological effects of bacteria community on the vitality and fecundity of adult hosts, but also revealed the shift pattern of bacterial community structures across the life stages and demonstrated the co-enhancements of specific bacterial groups and bacterial functions in nutritional metabolism inP. citri. This study sheds light on basic information about the mutualism between spider mites and bacteria, which may be useful in shaping the next generation of control strategies for spider mite pests, especiallyP. citri.