Oocyte Vitellogenesis Triggers the Entry of Yeast-Like Symbionts Into the Oocyte of Brown Planthopper (Hemiptera: Delphacidae)
| Autor: | Chen-Xing Zhao, Xu Yipeng, Xiaoping Yu, Ye-Wei Yu, Guo-Hui Nan, Chuan-Xi Zhang |
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| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Biology biology.organism_classification Oocyte Follicular cell Cell biology 03 medical and health sciences Vitellogenin 030104 developmental biology medicine.anatomical_structure Insect Science Follicular phase medicine biology.protein Vitellogenesis Brown planthopper Delphacidae Actin |
| Zdroj: | Annals of the Entomological Society of America. 109:753-758 |
| ISSN: | 1938-2901 0013-8746 |
| DOI: | 10.1093/aesa/saw025 |
| Popis: | Yeast-like symbionts (YLSs) are transovarially transmitted between brown planthopper generations, but the transmission mechanism is poorly understood. In the present study, we found that YLSs do not enter the brown planthopper oocyte until it develops to late vitellogenesis. During oocyte vitellogenesis, the diversification and morphological changes of the follicular cells surrounding the oocyte are associated with the accumulation and polarization of vitellogenin (Vg) and lipids in the oocyte, indirectly affecting the entry of YLSs into the oocyte. Additionally, the posterior follicular cells, one of the diversified follicular cell populations, form the epithelial plug that is the only structure for YLSs to enter the oocyte. In addition, actin is rearranged within the follicular cells to build an actin bridge for YLSs to move from the epithelial plug to the oocyte, indicating that actin mediates the entry of YLSs into the brown planthopper oocyte during oocyte vitellogenesis. Taken together, our results demonstrate that the entry of YLSs into the brown planthopper oocyte is triggered by oocyte vitellogenesis. |
| Databáze: | OpenAIRE |
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