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| 1 | 昆虫次生内共生菌Rickettsia研究进展显示文摘Rickettsia隶属于变形菌纲Proteobacteria的α亚群立克次体科Rickettsiaceae革兰氏阴性菌,是形态多样的次生真核细胞内共生菌。Rickettsia的功能是多样的,在一些宿主中为营养共生菌,在另一些宿主中为生殖调控因子,或以昆虫为载体的植物病原菌,此外,Rickettsia还能增强宿主抗药性,提高宿主抵御天敌、高温或者其它致死因素的能力。本综述主要从Rickettsia的起源、分类、在昆虫体内的分布、传播方式、与昆虫生殖调控的关系以及基因组进化等方面,简述Rickettsia的研究进展,重点提出了Rickettsia研究中一些尚未解决的问题,期望通过这些研究进一步明确Rickettsia与昆虫之间的互作关系。 | 张婧 张毅波 薛延韬 刘怀 张桂芬 万方浩 | 2017 | 环境昆虫学报2017，39，2： | 4 |
| 2 | 中国入侵昆虫预防与控制研究进展显示文摘在全球经济一体化、农业结构调整以及全球气候变化等因素的影响下,我国正面临着严峻的生物入侵问题。外来入侵昆虫是我国生物入侵的重要组成部分,阐明其传入至成灾的发生过程与机制,研发快速高效的防控技术体系具有重要意义。本文综述了近20年来我国在外来入侵昆虫的生物学特性、种群遗传分化、种间互作与生态适应方面取得的重要研究成果,以及在入侵昆虫早期快速检测、田间监测与高效防控技术的研发与应用方面取得的进展,并提出入侵昆虫学科未来发展的方向与思路。旨在为进一步分析新时代背景下入侵昆虫的发生机制奠定基础,对丰富和完善入侵昆虫可持续控制的策略和措施也具有指导意义。 | 彭露 万方浩 侯有明 | 2020 | 应用昆虫学报2020，57，2： | 4 |
| 3 | New insights into the transovarial transmission of the symbiont Rickettsia in whiteflies显示文摘Endosymbiont transmission via eggs to future host generations has been recognized as the main strategy for its persistence in insect hosts;however,the mechanisms for transmission have yet to be elucidated.Here,we describe the dynamic locations of Rickettsia in the ovarioles and eggs during oogenesis and embryogenesis in a globally significant pest whitefly Bemisia tabaci.Field populations of the whitefly have a high prevalence of Rickettsia,and in all Rickettsia-infected individuals,the bacterium distributes in the body cavity of the host,especially in the midgut,fat body,hemocytes,hemolymph,and near bacteriocytes.The distribution of Rickettsia was subjected to dynamic changes in the ovary during oogenesis,and our ultrastructural observations indicated that the bacteria infect host ovarioles during early developmental stages via two routes:(i)invasion of the tropharium by endocytosis and then transmission into vitellarium via nutritive cord and(ii)entry into vitellarium by hijacking bacteriocyte translocation.Most of the Rickettsia are degraded in the oocyte cytoplasm in late-stage oogenesis.However,a few reside beneath the vitelline envelope of mature eggs,spread into the embryo,and proliferate during embryogenesis to sustain high-fidelity transmission to the next generation.Our findings provide novel insights into the maternal transmission underpinning the persistence and spread of insect symbionts. | Hongwei Shan Yinquan Liu Junbo Luan Shusheng Liu | 2021 | Science China(Life Sciences)2021，64，7： | 3 |
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