Liverwort MpSDR4 regulates abscisic acid sensitivity and gemma cup growth
Complex traits often evolve by co-opting pre-existing genetic components. Orthologs of the transcriptional co-factor SEED DORMANCY 4 (SDR4) are found across seed-bearing and seed-free land plants. In flowering plants, loss-of-function mutants of sdr4 orthologs in rice and Arabidopsis exhibit opposite phenotypes in seed...