Cloning and Bioinformatics Analysis of in Cotton () Boll Abscission Layer With Ethylene Treatment.

With the continuous growth of the human population, the demand for fiber is also rising sharply. As one of the main fiber plants available globally, cotton fiber yield () is affected by boll abscission, which is related to the formation of the abscission layer. Therefore, we explored the formation of the abscission layer in cotton. The formation of the abscission layer in the cotton boll stalk was promoted by exogenous ethylene. It was found that both the number of the Golgi apparatus and the number of stacking layers increased in the dissociated cells. The gene family in cotton was screened by the bioinformatics method, and the species and evolutionary relationship of gene family were analyzed. qRT-PCR showed that , , , and in cotton had spatiotemporal-specific expression patterns. Subcellular localization suggested that played a role in the Golgi apparatus. The expression of in transgenic is increased in the roots, stems, and leaves. Finally, we found that ethylene could induce the formation of the abscission layer in cotton. , and might regulate the changes in the Golgi apparatus in the abscission layer. Taken together, the findings provide new ideas for the study of the formation of cotton abscission.