与复杂微生物群的相互作用介导了宿主发育率和耐热应激能力之间的权衡。
Interactions with a Complex Microbiota Mediate a Trade-Off between the Host Development Rate and Heat Stress Resistance.
作者信息
Slowinski Samuel, Ramirez Isabella, Narayan Vivek, Somayaji Medha, Para Maya, Pi Sarah, Jadeja Niharika, Karimzadegan Siavash, Pees Barbara, Shapira Michael
机构信息
Department of Integrative Biology, 3040 Valley Life Sciences Building, University of California, Berkeley, CA 94720-3140, USA.
Department of Biology, 4223 Biology-Psychology Bldg., University of Maryland, College Park, MD 20742, USA.
出版信息
Microorganisms. 2020 Nov 13;8(11):1781. doi: 10.3390/microorganisms8111781.
Animals and plants host diverse communities of microorganisms, and these microbiotas have been shown to influence host life history traits. Much has been said about the benefits that host-associated microbiotas bestow on the host. However, life history traits often demonstrate tradeoffs among one another. Raising nematodes in compost microcosms emulating their natural environment, we examined how complex microbiotas affect host life history traits. We show that soil microbes usually increase the host development rate but decrease host resistance to heat stress, suggesting that interactions with complex microbiotas may mediate a tradeoff between host development and stress resistance. What element in these interactions is responsible for these effects is yet unknown, but experiments with live versus dead bacteria suggest that such effects may depend on bacterially provided signals.
动植物体内寄生着各种各样的微生物群落，这些微生物群已被证明会影响宿主的生活史特征。关于宿主相关微生物群赋予宿主的益处，人们已经谈了很多。然而，生活史特征往往相互之间存在权衡。我们在模拟线虫自然环境的堆肥微观世界中培养线虫，研究复杂的微生物群如何影响宿主的生活史特征。我们发现，土壤微生物通常会提高宿主的发育速度，但会降低宿主对热应激的抵抗力，这表明与复杂微生物群的相互作用可能会在宿主发育和应激抗性之间进行权衡。这些相互作用中的哪些因素导致了这些影响尚不清楚，但对活细菌和死细菌的实验表明，这种影响可能取决于细菌提供的信号。
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