Scientists looked at a plant called Rosa roxburghii, which grows in different environments. They wanted to see if the plant's physical features, like fruit size and stem thickness, were connected to the tiny organisms (microbes) living in the soil around its roots and to the local climate. They studied plants from several different locations.
The study found that plants from different areas had different physical traits and different communities of microbes in their root soil. The researchers identified a specific set of 12 types of bacteria and fungi that were common markers. They found that the groups of fungi were more strongly linked to the plant's physical traits, like fruit size, than the groups of bacteria were. Stem thickness was linked to both climate factors and these microbial markers.
This research only shows an association or link between these factors. It was an observational study, meaning the scientists measured what was already there without testing a specific change. They did not prove that the microbes or the climate caused the plants to develop certain traits. The study helps map out connections in nature that scientists can now investigate further in controlled experiments to understand the underlying reasons.