In plants, the () gene family is unique and responds to ubiquitous stress and hormones, playing important regulatory roles in the growth and development of plants, as well as in the resistance mechanisms to biotic and abiotic stress. In this study, a total of 23 s were characterized in using a genome-wide approach, and their phylogenetic relationships, gene structures, conserved motifs, chromosomal locations, gene duplications, and promoter regions were systematically analyzed. Expression profile analysis derived from transcriptome data showed that s are expressed at higher levels in the flowers or fruit than in the leaves, vines, and roots. The expression of s also showed habitat- and environmental-stress-regulated patterns in analyzed by transcriptome and quantitative reverse transcription PCR (qRT-PCR). The heterologous induced expression of some s in yeast enhanced the tolerance to HO, and some s showed elevated heat tolerance and heavy metal (HM) Cd/Cu tolerance. These findings will provide an important foundation to elucidate the biological functions of genes, especially their role in the ecological adaptation of specific plant species to tropical islands and reefs in .