Soil bacteria around plant roots are very different from all other soil.
But in very large scale (e.g., km), geology is main factor of microbiom composition.
So the previous studies usually focus on topics like:
1. how plant <-> enviroment <-> microbiome interactions work in small range(meter/cm/even mm length).
2. how bacteria diversity change in large scale, and how it influce plant and enviroment.
The first type is more common (cheaper), but comparing of bacteria diversity is difficult, usually we nee more than ten plants in each experimental group. So focusing on single plant require very different methods, and it is more difficult check whether it is not caused by random effects.
Soil bacteria around plant roots are very different from all other soil.
But in very large scale (e.g., km), geology is main factor of microbiom composition.
So the previous studies usually focus on topics like:
1. how plant <-> enviroment <-> microbiome interactions work in small range(meter/cm/even mm length).
2. how bacteria diversity change in large scale, and how it influce plant and enviroment.
The first type is more common (cheaper), but comparing of bacteria diversity is difficult, usually we nee more than ten plants in each experimental group. So focusing on single plant require very different methods, and it is more difficult check whether it is not caused by random effects.