Table 1.
Stress | Epiphytic sites* |
Apoplastic sites* |
||||||
Lab A | Lab B | Lab C | Combined dataset | Lab A | Lab B | Lab C | Combined dataset | |
Osmotic stress | 0.40 | 0.47 | 0.25 | 0.42 | 0.50 | 0.75 | 0.42 | 0.64 |
Nitrogen limitation | 0.34 | 0.32 | 0.33 | 0.36 | 0.46 | 0.22 | 0.41 | 0.28 |
Oxidative stress | 0 | 0.02 | 0.26 | 0 | 0 | 0 | 0 | 0 |
Iron limitation | 0.26 | 0.15 | 0.10 | 0.18 | 0.04 | 0.04 | 0.16 | 0.07 |
*Multiple regression analysis was performed with the constraints that the coefficients were non-negative and had to sum to one. The transcriptome data were in the form of the transcript abundances weighted with variances using a least-squares approach. Regression analyses were performed separately for the data from each laboratory and for the combined dataset.