Identification and Expression Analysis of the MADS-box Gene Family in Camellia sinensis

A woody crop that has been important to the economy is Camellia sinensis . Tea plants may experience physiological and metabolic changes as a result of drought and high salinity. The MADS-box gene family is a significant of transcription factors essential for various facets of plant growth and development. However, comprehensive research on MADS-box genes in C.sinensis is still sparse. In this study, based on the genomic datas of C. sinensis , a total of 70 MADS-box genes were identified and phylogenetically categorized into two types Type I (which includes Mα, Mβ, Mγ, and Mγ, consisting of 26 members) and Type II (comprising MIKCC and MIKC*, with 44 members). Members of the same subfamily have very conserved exon-intron patterns and protein motifs, according to gene structure analysis. The initial detailed study of the MADS-box gene family expression profiles and evolutionary features of this gene in C.sinensis is presented in this paper. Moreover, qRT-PCR tests showed that these genes are frequently engaged in the reaction to salt stress and drought. These results not only offer valuable insights into the genetic mechanisms that contribute to tea plant diversity but also lay the groundwork for molecular breeding efforts focused on enhancing tea quality and aesthetic characteristics.