文献类型： 外文期刊

作者： Yang, Mengke ¹ ; Li, Jianling ¹ ; Qiao, Haili ¹ ; Guo, Kun ¹ ; Xu, Rong ¹ ; Wei, Hongshuang ¹ ; Wei, Jianhe ¹ ; Liu, Sai ¹ ; Xu, Changqing ¹ ;

作者机构： 1.Chinese Acad Med Sci & Peking Union Med Coll, Inst Med Plant Dev, 151 Malianwa North Rd, Beijing 100193, Peoples R China

2.Qinghai Acad Agr & Forestry Sci, 253 Ningda Rd, Xining 810016, Qinghai, Peoples R China

关键词： Phoresy; Gall mite; Psyllid; Interspecific competition; Metabolite communication

期刊名称：EXPERIMENTAL AND APPLIED ACAROLOGY （ 影响因子：2.2； 五年影响因子：2.1 ）

ISSN： 0168-8162

年卷期： 2023 年 91 卷 3 期

页码：

收录情况： SCI

摘要： Phoresy is one of the most distinctive relationships between mites and insects, and the off-host interaction between phoretic mites and their carriers is the most critical factor sustaining the phoretic association. As phoretic associations commonly occur in temporary habitats, little is known about off-host interactions between phoronts and carriers. However, an off-host interaction has been reported, in which the plant-mediated competition between a phoretic gall mite, Aceria pallida, and its psyllid vector, Bactericera gobica, after detachment decreases leaf abscission caused by B. gobica and then directly facilitates their phoretic association. In this obligate phoresy, A. pallida seasonally attaches to B. gobica for overwinter survival and they share the same host plant, Lycium barbarum, during the growing season. It is unknown how the host plant responds to these two herbivores and what plant metabolites are involved in their interspecific interaction. Here, effects of A. pallida and B. gobica on the host plant's transcriptome and metabolome, and on enzymes involved in plant defence, at various infestation stages were studied by inoculating A. pallida and B. gobica either separately or simultaneously on leaves of L. barbarum. Our results showed that (a) A. pallida significantly promoted primary and secondary metabolite accumulation, (b) B. gobica markedly inhibited primary and secondary metabolite accumulation and had little influence on defence enzyme activity, and (c) under simultaneous A. pallida and B. gobica infestation, an intermediate response was predicted. These findings indicate that A. pallida and B. gobica have different effects on host plants, A. pallida inhibits B. gobica mainly by increasing the secondary metabolism of L. barbarum, whereas B. gobica inhibits A. pallida mainly by decreasing the primary metabolism of L. barbarum. In conjunction with our previous research, we speculate that this trade-off in host plant metabolite response between A. pallida and B. gobica after detachment promotes a stable phoretic association.