biostudies-literatureLian XHenan Province Outstanding Foreign Scholar ProgramSpecial Fund of Henan Province for Agro-scientific Research in the Public InterestModern Agricultural Industry Technology of Henan ProvinceYouth Fund of Henan ProvinceInnovation Fund of Henan Agriculture University10849https://www.ebi.ac.uk/biostudies/studies/S-EPMC9501816biostudies-literatureUnknown23(18)The heat shock protein 20 (HSP20) proteins comprise an ancient, diverse, and crucial family of proteins that exists in all organisms. As a family, the HSP20s play an obvious role in thermotolerance, but little is known about their molecular functions in addition to heat acclimation. In this study, 42 <i>PpHSP20</i> genes were detected in the peach genome and were randomly distributed onto the eight chromosomes. The primary modes of gene duplication of the PpHSP20s were dispersed gene duplication (DSD) and tandem duplication (TD). PpHSP20s in the same class shared similar motifs. Based on phylogenetic analysis of HSP20s in peach, <i>Arabidopsis thaliana</i>, <i>Glycine max,</i> and <i>Oryza sativa</i>, the PpHSP20s were classified into 11 subclasses, except for two unclassified PpHSP20s. <iInternational journal of molecular sciencesPhylogenetic and Transcriptional Analyses of the <i>HSP20</i> Gene Family in Peach Revealed That <i>PpHSP20-32</i> Is Involved in Plant Height and Heat Tolerance.PMC9501816No. 30500873No. 201300110500HARS-22-09-G1GZS2020007No. 30602313Li HZheng XLi JLian XZhang HGao HYe XTan BWang QFeng JLi TWang WWang XCheng JfalsePhylogenetic and Transcriptional Analyses of the <i>HSP20</i> Gene Family in Peach Revealed That <i>PpHSP20-32</i> Is Involved in Plant Height and Heat Tolerance.The heat shock protein 20 (HSP20) proteins comprise an ancient, diverse, and crucial family of proteins that exists in all organisms. As a family, the HSP20s play an obvious role in thermotolerance, but little is known about their molecular functions in addition to heat acclimation. In this study, 42 <i>PpHSP20</i> genes were detected in the peach genome and were randomly distributed onto the eight chromosomes. The primary modes of gene duplication of the PpHSP20s were dispersed gene duplication (DSD) and tandem duplication (TD). PpHSP20s in the same class shared similar motifs. Based on phylogenetic analysis of HSP20s in peach, <i>Arabidopsis thaliana</i>, <i>Glycine max,</i> and <i>Oryza sativa</i>, the PpHSP20s were classified into 11 subclasses, except for two unclassified PpHSP20s. <i2022-01-01T00:00:00Z2022 Sep2025-04-18T22:28:45.206Z2024-10-19T08:20:47.239ZS-EPMC95018163614276110.3390/ijms231810849