Community analysis of microbial sharing and specialization in a Costa Rican ant–plant–hemipteran symbiosis
Community analysis of microbial sharing and specialization in a Costa Rican ant–plant–hemipteran symbiosis
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哥斯达黎加蚂蚁-植物-半翅目共生微生物共享和专业化的群落分析
DOI：
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
C. Moreau
中科院分区：
文献类型：
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作者：
E. G. Pringle;C. Moreau
长期以来，蚂蚁因其与滋养生物和植物的亲密互利关系而闻名，最近又因其与微生物的广泛而多样的相互作用而受到赞赏。共生研究中的一个悬而未决的问题是环境影响的程度，包括相互作用的大型生物之间的微生物交换，影响共生微生物群落的组成和功能。在这里，我们通过研究共生中的共生来探讨这个问题。蚂蚁-植物-半翅目昆虫共生是热带生态系统的标志，这种共生使大型生物伙伴之间产生持续的密切接触，从而有大量的机会交换共生微生物。我们使用元条形码和定量PCR来研究新热带区蚂蚁-植物-鳞片-昆虫共生体中细菌和真菌的群落结构。取食韧皮部的介壳虫和取食蜜瓜的蚂蚁都利用微生物共生体以营养质量欠佳的韧皮部来源的食物为生。在这里检查的昆虫中，Ceclantes蚂蚁和pseudococcid介壳虫具有最专门的细菌共生体，而阿兹特克蚂蚁似乎消耗或与更多的真菌比细菌，介壳虫与异常多样的细菌群落。尽管存在这些差异，但我们也发现了宏观合作伙伴之间明显的微生物共享。微生物交换如何影响消费者-资源相互作用，从而形成蚂蚁-植物-半翅目昆虫共生体的进化是一个令人兴奋的问题，有待进一步研究。
Ants have long been renowned for their intimate mutualisms with trophobionts and plants and more recently appreciated for their widespread and diverse interactions with microbes. An open question in symbiosis research is the extent to which environmental influence, including the exchange of microbes between interacting macroorganisms, affects the composition and function of symbiotic microbial communities. Here we approached this question by investigating symbiosis within symbiosis. Ant–plant–hemipteran symbioses are hallmarks of tropical ecosystems that produce persistent close contact among the macroorganism partners, which then have substantial opportunity to exchange symbiotic microbes. We used metabarcoding and quantitative PCR to examine community structure of both bacteria and fungi in a Neotropical ant–plant–scale-insect symbiosis. Both phloem-feeding scale insects and honeydew-feeding ants make use of microbial symbionts to subsist on phloem-derived diets of suboptimal nutritional quality. Among the insects examined here, Cephalotes ants and pseudococcid scale insects had the most specialized bacterial symbionts, whereas Azteca ants appeared to consume or associate with more fungi than bacteria, and coccid scale insects were associated with unusually diverse bacterial communities. Despite these differences, we also identified apparent sharing of microbes among the macro-partners. How microbial exchanges affect the consumer-resource interactions that shape the evolution of ant–plant–hemipteran symbioses is an exciting question that awaits further research.
影响因子：
5.8
作者：
F. Konietschke;Marius Placzek;F. Schaarschmidt;L. Hothorn
通讯作者：
F. Konietschke;Marius Placzek;F. Schaarschmidt;L. Hothorn