biostudies-literatureLai DLthe Natural Science Foundation of China301https://www.ebi.ac.uk/biostudies/studies/S-EPMC8164569biostudies-literatureUnknown11(6)Heat shock protein 70 (<i>Hsp70</i>) plays an important role in plant development. It is closely related to the physiological process of cell development and the response to abiotic and biological stress. However, the classification and evolution of <i>Hsp70</i> genes in bread wheat, wild emmer wheat and <i>Aegilops tauschii</i> are still unclear. Therefore, this study conducted a comprehensive bioinformatics analysis of <i>Hsp70</i> gene in three species. Among these three species, 113, 79 and 36 <i>Hsp70</i> genes were identified. They are divided into six subfamilies. Group vi-1 is different from <i>Arabidopsis thaliana</i>. It may be the result of early evolutionary segregation. The number of exons in different subfamilies (from 1 to 13) was different, but the distribution patterns of 3 BiotechGenome-wide identification and phylogenetic relationships of the <i>Hsp70</i> gene family of <i>Aegilops tauschii</i>, wild emmer wheat (<i>Triticum dicoccoides</i>) and bread wheat (<i>Triticum aestivum</i>).PMC816456931560578Cheng JPLi YLai DLYan JFan YWang JZCheng XBRuan JJfalseGenome-wide identification and phylogenetic relationships of the <i>Hsp70</i> gene family of <i>Aegilops tauschii</i>, wild emmer wheat (<i>Triticum dicoccoides</i>) and bread wheat (<i>Triticum aestivum</i>).Heat shock protein 70 (<i>Hsp70</i>) plays an important role in plant development. It is closely related to the physiological process of cell development and the response to abiotic and biological stress. However, the classification and evolution of <i>Hsp70</i> genes in bread wheat, wild emmer wheat and <i>Aegilops tauschii</i> are still unclear. Therefore, this study conducted a comprehensive bioinformatics analysis of <i>Hsp70</i> gene in three species. Among these three species, 113, 79 and 36 <i>Hsp70</i> genes were identified. They are divided into six subfamilies. Group vi-1 is different from <i>Arabidopsis thaliana</i>. It may be the result of early evolutionary segregation. The number of exons in different subfamilies (from 1 to 13) was different, but the distribution patterns of 2021-01-01T00:00:00Z2021 Jun2026-05-05T03:11:04.928Z2025-04-04T22:01:57.756ZS-EPMC81645693419489410.1007/s13205-021-02639-5