Correlation Analysis Between Clustering of Phyllosphere Bacterial OTUs and Environmental Factors
Correlations between the environmental factors (temperature, humidity, and altitude) at each sampling location and their OTUs were calculated and tested. The OTUs and environmental factors clustered separately (Figure S2). These results confirmed that OTU280, OTU257, OTU146, OTU27, OTU437, OTU196, OTU385, OTU30, and OTU510 were significantly correlated with temperature and clustered into one large branch; OTU430 was significantly correlated with temperature and humidity and was in this large branch as well; and OTU144 was significantly correlated with temperature and humidity, but was in a separate branch. Altitude had no effect on the OTUs. Notably, OTU144 was highly correlated with temperature and humidity, OTU196 and OTU30 were highly correlated with temperature alone, while OTU 430 was moderately correlated with humidity alone.