Host plant species determines symbiotic bacterial community mediating suppression of plant defenses.
Host plant species determines symbiotic bacterial community mediating suppression of plant defenses.
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DOI：
10.1038/srep39690
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发表时间：
2017-01-03
影响因子：
4.6
通讯作者：
Felton GW
中科院分区：
文献类型：
--
作者：
Chung SH;Scully ED;Peiffer M;Geib SM;Rosa C;Hoover K;Felton GW
草食性相关细菌是植物和昆虫相互作用的重要介质。寄主植物在昆虫肠道细菌群落的形成中起着重要的作用。科罗拉多马铃薯甲虫（CPB;马铃薯甲虫（Leptinotarsa decemlineata））在其自然环境中使用几种茄属植物作为宿主。我们以前表明，共生肠道细菌CPB幼虫抑制茉莉酸（JA）诱导的防御番茄。然而，很少有人知道如何在细菌群落的变化可能涉及在CPB的野生和栽培茄属植物诱导防御的操纵。在这里，我们研究了抑制JA介导的防御在野生和栽培的CPB主机的化学诱导子和它们的共生细菌。此外，我们研究了肠道细菌群落和植物防御抑制之间的关联，使用16 S rRNA扩增子测序。共生细菌降低植物防御在所有茄属宿主和有不同的肠道细菌群落在CPB饲养不同的寄主植物。当幼虫在不同的寄主上饲养时，寄主植物之间的防御抑制不同。这些结果表明，宿主植物影响草食动物肠道细菌群落，从而影响草食动物的能力，操纵JA介导的植物防御。因此，抑制植物防御的共生细菌的存在可能有助于CPB适应宿主植物。
Herbivore associated bacteria are vital mediators of plant and insect interactions. Host plants play an important role in shaping the gut bacterial community of insects. Colorado potato beetles (CPB; Leptinotarsa decemlineata) use several Solanum plants as hosts in their natural environment. We previously showed that symbiotic gut bacteria from CPB larvae suppressed jasmonate (JA)-induced defenses in tomato. However, little is known about how changes in the bacterial community may be involved in the manipulation of induced defenses in wild and cultivated Solanum plants of CPB. Here, we examined suppression of JA-mediated defense in wild and cultivated hosts of CPB by chemical elicitors and their symbiotic bacteria. Furthermore, we investigated associations between the gut bacterial community and suppression of plant defenses using 16 S rRNA amplicon sequencing. Symbiotic bacteria decreased plant defenses in all Solanum hosts and there were different gut bacterial communities in CPB fed on different host plants. When larvae were reared on different hosts, defense suppression differed among host plants. These results demonstrate that host plants influence herbivore gut bacterial communities and consequently affect the herbivore’s ability to manipulate JA-mediated plant defenses. Thus, the presence of symbiotic bacteria that suppress plant defenses might help CPB adapt to host plants.
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影响因子：
2.3
作者：
FELTON, GW;DONATO, K;DUFFEY, SS
通讯作者：
DUFFEY, SS
影响因子：
8.8
作者：
Kohl, Kevin D.;Dearing, M. D.
通讯作者：
Dearing, M. D.
影响因子：
1.9
作者：
HSIAO, TH
通讯作者：
HSIAO, TH
DOI：
10.1073/pnas.1301886110
发表时间：
2013-07-16
影响因子：
11.1
作者：
Chu, Chia-Ching;Spencer, Joseph L.;Seufferheld, Manfredo J.
通讯作者：
Seufferheld, Manfredo J.
影响因子：
4.8
作者：
Izzo, Victor M.;Mercer, Nathan;Chen, Yolanda H.
通讯作者：
Chen, Yolanda H.