POLH and Fanconi anemia: Relevant to the adaptation of TRD to arid conditions, ten selected genes (including SLX4, FANCF, FANCG, FANCI, ATR, and POLH) were related to the fanconi anemia pathway (bta03460, p < 0.01) (Additional file 13: Table S13) involved in DNA repair, DNA replication fork stability, and other cellular processes [97].