Chromosome doubling modulates phenotypic variation in Pakchoi by integrating gene expression across signaling and regulatory pathways, with a focus on those governing plant growth and stimulus responses. Auxin and ethylene signaling transduction and metabolism may act as key determinants of morphological divergence in autotetraploid Pakchoi. This study provides novel insights into the mechanisms underlying phenotypic variation in autotetraploid, with implications for optimizing polyploid breeding strategies.
Tang et al. (Wed,) studied this question.