Soil microbial communities with greater investment in resource acquisition have lower growth yield
Soil microbial communities with greater investment in resource acquisition have lower growth yield
复制标题
DOI：
10.1101/455071
复制
发表时间：
2018-10
期刊：
影响因子：
--
通讯作者：
A. Malik;J. Puissant;T. Goodall;S. Allison;R. Griffiths
中科院分区：
文献类型：
--
作者：
A. Malik;J. Puissant;T. Goodall;S. Allison;R. Griffiths
资源获取和生长产量是微生物的基本特征，对生态系统功能具有影响。然而，缺乏将这些特征联系起来的经验观察。使用温带近中性pH值土壤的一个小规模的调查，我们展示了与这些性状相关的关键社区水平参数的权衡。增加对胞外酶的投资与生长产量降低;这种减少与碳比氮获取酶更相关，这表明在研究土壤中对群落代谢的化学计量限制较小。
Resource acquisition and growth yield are fundamental traits of microorganisms that have consequences for ecosystem functioning. However, there is a lack of empirical observations linking these traits. Using a landscape-scale survey of temperate near-neutral pH soils, we show tradeoffs in key community-level parameters linked to these traits. Increased investment into extracellular enzymes was associated with reduced growth yield; this reduction was linked more to carbon than nitrogen acquisition enzymes suggesting smaller stoichiometric constraints on community metabolism in examined soils.