Genome-Wide Identification and Expression Analysis of the Hsp70 Gene Family in Hylocereus undatus Seedlings Under Heat Shock Stress.

ABSTRACT: Hylocereus undatus growth is limited by long-term heat stress, and heat shock protein 70 (Hsp70) is crucial in the plant's heat stress (HS) response. In a previous study, transcriptomic data revealed that Hsp70 family members in pitaya seedlings respond to temperature changes. This study identified 27 HuHsp70 genes in pitaya, analyzed their physicochemical properties (such as molecular weight and isoelectric point), and divided them into five subfamilies with conserved gene structures, motifs (short conserved sequence patterns), and cis-acting elements (regulatory DNA sequences). The Ks value (synonymous substitution rate) ranged from 0.93~3.54, and gene duplication events occurred between 71.17 and 272.19 million years ago (Mya). Under HS, eight and nine differentially expre

SUBMITTER: Liu Y 

PROVIDER: S-EPMC12840715 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature