Table 5.

Correlations between average R-gene expression and four climate variables.

Significant correlations of both basal R-gene expression and R-gene expression plasticity after environmental perturbation are shown. These clines are displayed in Figures 3a, 3d, and 4.

Accessions	Climate variable	Treatment	Slope	R 2	Adjusted R 2	F	P-value
Basal expression
Midwest	Latitude	Short day	1.435	0.964	0.953	81.2	0.003*
Worldwide	Temperature seasonality	Short day	–0.107	0.728	0.661	10.75	0.031
Expression plasticity		Fold change in response to:
Midwest	Latitude	Short day	1.516	0.981	0.975	157.7	0.001*
Worldwide	Temperature seasonality	Low water	0.097	0.954	0.943	83.5	<0.001*
Worldwide	Minimum temperature in the coldest month	Low water	–0.087	0.864	0.830	25.4	0.007*
Worldwide	Precipitation in the driest month	Low water	0.456	0.887	0.858	31.2	0.005*
Worldwide	Precipitation in the driest month	High temperature and low water	0.350	0.983	0.977	169.3	<0.001*
Worldwide	Precipitation in the driest month	High temperature	0.408	0.764	0.705	12.9	0.023

P-values in bold are significant correlations, and asterisks represent significant correlations after corrections for multiple testing to four climate variables.