Wheat Small GTPase Gene TaRABH1bL Is Involved in High-Temperature All-Stage Resistance to Puccinia striiformis f. sp. tritici.

ABSTRACT: As the largest subfamily of small GTPases, the Rab subfamily plays a pivotal role in regulating biotic and abiotic stresses in plants. However, the functions of Rabs in resistance to wheat stripe rust caused by Puccinia striiformis f. sp. tritici (Pst) remain unclear. Here, we identified a Rab subfamily gene, TaRABH1bL, from Xiaoyan 6 (XY6), a wheat cultivar known for non-race-specific and durable high-temperature all-stage (HTAS) resistance to stripe rust. The expression level of TaRABH1bL was exclusively up-regulated with Pst inoculation under the relatively high-temperature treatment, which indicated that TaRABH1bL might concurrently respond to both biotic and abiotic stress signals. The TaRABH1bL gene was primarily expressed in leaves. Barley stripe mosaic virus (BSMV)-induced TaRABH1b

SUBMITTER: Shi Y 

PROVIDER: S-EPMC12330980 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature