Phagotrophic Protists and Their Associates: Evidence for Preferential Grazing in an Abiotically Driven Soil Ecosystem.
Phagotrophic Protists and Their Associates: Evidence for Preferential Grazing in an Abiotically Driven Soil Ecosystem.
复制标题
DOI：
10.3390/microorganisms9081555
复制
发表时间：
2021-07-21
期刊：
影响因子：
4.5
通讯作者：
Adams BJ
中科院分区：
文献类型：
--
作者：
Thompson AR;Roth-Monzón AJ;Aanderud ZT;Adams BJ
生态系统功能和土壤食物网结构之间的复杂关系受物种相互作用的支配，其中许多尚未绘制。噬菌体原生生物通过放牧微生物组来构建土壤食物网，但它们参与行会内竞争，对捕食者多样性的敏感性和放牧偏好只有模糊的了解。这些物种依赖的相互作用是由相邻的生物和非生物过程的背景，从而混淆了典型的高土壤生物多样性。这些问题可以在南极洲的麦克默多干谷（MDV）进行调查，因为物理环境强烈过滤生物多样性，简化了非生物因素的影响。为了检测MDV中潜在的相互作用，我们分析了鸟枪宏基因组序列之间的共同出现，以确定是否存在行会内竞争、捕食和优先放牧。为了控制混杂的非生物驱动因素，我们测试了各种气候和土壤因素的共生模式。非随机共生之间的嗜食性原生生物和其他土壤动物的生物驱动，但我们没有发现支持竞争或捕食。然而，原生生物主要与Proteobacteria和避免放线菌，这表明放牧的喜好是由细菌细胞壁结构和生长速率调制。我们的研究提供了一个关键的起点映射原生生物在原生土壤中的相互作用，并强调了未来有针对性的分子和文化为基础的方法的关键趋势。
The complex relationship between ecosystem function and soil food web structure is governed by species interactions, many of which remain unmapped. Phagotrophic protists structure soil food webs by grazing the microbiome, yet their involvement in intraguild competition, susceptibility to predator diversity, and grazing preferences are only vaguely known. These species-dependent interactions are contextualized by adjacent biotic and abiotic processes, and thus obfuscated by typically high soil biodiversity. Such questions may be investigated in the McMurdo Dry Valleys (MDV) of Antarctica because the physical environment strongly filters biodiversity and simplifies the influence of abiotic factors. To detect the potential interactions in the MDV, we analyzed the co-occurrence among shotgun metagenome sequences for associations suggestive of intraguild competition, predation, and preferential grazing. In order to control for confounding abiotic drivers, we tested co-occurrence patterns against various climatic and edaphic factors. Non-random co-occurrence between phagotrophic protists and other soil fauna was biotically driven, but we found no support for competition or predation. However, protists predominately associated with Proteobacteria and avoided Actinobacteria, suggesting grazing preferences were modulated by bacterial cell-wall structure and growth rate. Our study provides a critical starting-point for mapping protist interactions in native soils and highlights key trends for future targeted molecular and culture-based approaches.
登录
查看更多内容
影响因子：
14.9
作者：
NCBI Resource Coordinators
通讯作者：
NCBI Resource Coordinators
影响因子：
11.6
作者：
Burkins, MB;Virginia, RA;Wall, DH
通讯作者：
Wall, DH
DOI：
10.1098/rstb.2008.0214
发表时间：
2009-06-27
影响因子：
6.3
作者：
Allesina, Stefano;Bodini, Antonio;Pascual, Mercedes
通讯作者：
Pascual, Mercedes
影响因子：
3.6
作者：
Crotty, Felicity V.;Adl, Sina M.;Murray, Philip J.
通讯作者：
Murray, Philip J.
对真核生物的分类，命名法和多样性进行修订。
DOI：
10.1111/jeu.12691
发表时间：
2019-01
期刊：
The Journal of eukaryotic microbiology
影响因子：
--
作者：
Adl SM;Bass D;Lane CE;Lukeš J;Schoch CL;Smirnov A;Agatha S;Berney C;Brown MW;Burki F;Cárdenas P;Čepička I;Chistyakova L;Del Campo J;Dunthorn M;Edvardsen B;Eglit Y;Guillou L;Hampl V;Heiss AA;Hoppenrath M;James TY;Karnkowska A;Karpov S;Kim E;Kolisko M;Kudryavtsev A;Lahr DJG;Lara E;Le Gall L;Lynn DH;Mann DG;Massana R;Mitchell EAD;Morrow C;Park JS;Pawlowski JW;Powell MJ;Richter DJ;Rueckert S;Shadwick L;Shimano S;Spiegel FW;Torruella G;Youssef N;Zlatogursky V;Zhang Q
通讯作者：
Zhang Q