The fungal collaboration gradient dominates the root economics space in plants
The fungal collaboration gradient dominates the root economics space in plants
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DOI：
10.1126/sciadv.aba3756
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发表时间：
2020-07-01
期刊：
影响因子：
13.6
通讯作者：
Mommer, Liesje
中科院分区：
文献类型：
--
作者：
Bergmann, Joana;Weigelt, Alexandra;Mommer, Liesje
植物经济依赖于碳和营养，而不是金钱。地上的叶战略跨越了从“活得快，死得早”到“慢而稳”的经济范围，但地下的根战略所定义的经济仍然不清楚。在这里，我们从整体上看待地下经济，并表明根-菌根合作可以缩短一维经济光谱，提供一个完整的经济可能性空间。来自全球1810个物种的根部特征数据证实了一种经典的快-慢“保护”梯度，但表明大多数变异可以由一个正交的“合作”梯度来解释，范围从“自己动手”的资源吸收到“外包”到菌根真菌的资源吸收。这种拓宽的“根经济学空间”为预测理解地下对不断变化的环境条件的反应提供了坚实的基础。
Plant economics run on carbon and nutrients instead of money. Leaf strategies aboveground span an economic spectrum from "live fast and die young" to "slow and steady," but the economy defined by root strategies belowground remains unclear. Here, we take a holistic view of the belowground economy and show that root-mycorrhizal collaboration can short circuit a one-dimensional economic spectrum, providing an entire space of economic possibilities. Root trait data from 1810 species across the globe confirm a classical fast-slow "conservation" gradient but show that most variation is explained by an orthogonal "collaboration" gradient, ranging from "do-it-yourself" resource uptake to "outsourcing" of resource uptake to mycorrhizal fungi. This broadened "root economics space" provides a solid foundation for predictive understanding of belowground responses to changing environmental conditions.