*2.1. Identification of CsLEA Genes and Phylogenetic Analysis*

A total of 44 putative *C. songorica* LEA proteins were identified in this study (Table S1). These proteins were named from CsLEA1 to CsLEA44 and grouped into eight different subfamilies (Figure 1): CsLEA\_1, CsLEA\_2/LEA5C (Battaglia classification), CsLEA\_3, CsLEA\_4, CsLEA\_5, CsLEA\_6, SMP and Dehydrin, based on their Pfam conserved protein domains and their homology with the published LEA proteins of *A. thaliana* [28]. Two atypical LEA stress related domains, Water Stress and Hypersensitive response (WHy) and LEA14-like desiccation related protein (COG5608), were detected in the proteins from CsLEA\_2 subfamily (Figure S1).
