Interactions Between Facultative Symbionts Hamiltonella and Cardinium in Bemisia tabaci (Hemiptera: Aleyrodoidea): Cooperation or Conflict?
Interactions Between Facultative Symbionts Hamiltonella and Cardinium in Bemisia tabaci (Hemiptera: Aleyrodoidea): Cooperation or Conflict?
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烟粉虱（半翅目：粉虱总科）中兼性共生菌汉密尔顿菌和卡迪菌之间的相互作用：合作还是冲突？
DOI：
10.1093/jee/toy261
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发表时间：
2018-09
影响因子：
2.2
通讯作者：
Guo Hui-Fang
中科院分区：
文献类型：
--
作者：
Zhao Dong-Xiao;Ary A Hoffmann;Zhang Zhi-Chun;Niu Hong-Tao;Guo Hui-Fang
母体遗传的兼性共生体在大多数昆虫中广泛存在，并且在同一宿主个体中共存几个共生体是常见的。因此，共生体可以竞争或共享主机中的有限资源和空间。烟粉虱Bemisia tabaci（Gennadius）（半翅目：粉虱总科）是一种兼性共生昆虫，其共生菌种类繁多，其中以Hamiltonella sp.和Cardinium sp.为优势种。Hamiltonella单独增加宿主适应性，而Cardinium单独赋予较低的适应性。将这些不同的伙伴锁定在一起，为共生体之间的交互进化创造了理想的环境。本研究比较了Hamiltonella和Cardinium共同感染对烟粉虱适应度的影响，并测量了宿主衰老过程中Hamiltonella和Cardinium的密度，旨在探讨B中Hamiltonella和Cardinium的相互作用。烟粉虱研究结果表明，汉米尔顿氏菌和卡地氏菌混合感染可导致繁殖力、卵孵化率和雌性后代数量降低，导致后代性别比偏雄性，但没有证据表明两种感染之间存在生殖不亲和性。我们还发现了Hamiltonella和Cardinium之间的拮抗作用，因为后者的密度随时间增加，导致Hamiltonella密度降低，这可能是双重感染B中适应度成本的根本原因。烟粉虱探索这些不同的共生体共同感染的生态后果有助于我们了解这个物种中宿主-共生体相互作用的性质和进化冲突的可能性。
Maternally-inherited facultative symbionts are widespread in most insect species, and it is common that several symbionts coexist in the same host individual. Hence, the symbionts may compete or share for the limited resources and space in the host. The whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodoidea), harbors a diverse array of facultative symbionts, among which Hamiltonella sp. and Cardinium sp. are abundant species. Hamiltonella alone increases host fitness, while Cardinium alone confers lower fitness. Locking those different partners together creates ideal situations for the evolution of interactions between symbionts. In this study, we compared the fitness effects of whiteflies infected with only Hamiltonella to Hamiltonella-Cardnium co-infected whiteflies and measured the density of Hamiltonella and Cardinium during host aging, aiming to explore Hamiltonella-Cardinium interactions in B. tabaci. Our results illustrated that Hamiltonella-Cardinium coinfection induced lower fecundity, egg hatchability and number of female offspring, leading to a male-biased sex ratio in offspring, while there is no evidence for reproductive incompatibility between the infections. We also found an antagonistic interaction between Hamiltonella and Cardinium given that the density of the latter increased across time and led to a decrease of Hamiltonella density, which may be the underlying causes of the fitness cost in double-infected B. tabaci. Exploring the ecological consequences of co-infections of these different symbionts helps us to understand the nature of host-symbiont interactions in this species and potential for evolutionary conflict.
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影响因子：
3.7
作者：
Fang YW;Liu LY;Zhang HL;Jiang DF;Chu D
通讯作者：
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影响因子：
3.7
作者：
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影响因子：
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作者：
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影响因子：
3.7
作者：
Pan H;Li X;Ge D;Wang S;Wu Q;Xie W;Jiao X;Chu D;Liu B;Xu B;Zhang Y
通讯作者：
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影响因子：
4.6
作者：
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通讯作者：
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