I am going to create a journal club section in this blog, to record some interesting papers I read recently.

It may be good for summarization later. And then I will not ask "where the time was going?"

JC1: Rapid responses of soil microorganisms improve plant fitness in novel environments

"Global change is challenging plant and animal populations with novel environmental conditions, including increased atmospheric CO(2) concentrations, warmer temperatures, and altered precipitation regimes. In some cases, contemporary or "rapid" evolution can ameliorate the effects of global change. However, the direction and magnitude of evolutionary responses may be contingent upon interactions with other community members that also are experiencing novel environmental conditions. Here, we examine plant adaptation to drought stress in a multigeneration experiment that manipulated aboveground-belowground feedbacks between plants and soil microbial communities. Although drought stress reduced plant growth and accelerated plant phenologies, surprisingly, plant evolutionary responses to drought were relatively weak. In contrast, plant fitness in both drought and nondrought environments was linked strongly to the rapid responses of soil microbial community structure to moisture manipulations. Specifically, plants were most fit when their contemporary environmental conditions (wet vs. dry soil) matched the historical environmental conditions (wet vs. dry soil) of their associated microbial community. Together, our findings suggest that, when faced with environmental change, plants may not be limited to "adapt or migrate" strategies; instead, they also may benefit from association with interacting species, especially diverse soil microbial communities, that respond rapidly to environmental change."

Qusetions:

1 What is fitness?

The adaption to the environments.

2 What the plants can get from the microbe in the soil?

Mineral nutrition, et al.
3 Can we give a conclusion that nutrition availabilities are selection pressures for plant evolution?
Maybe.

More questions are wellcome.