文献类型： 外文期刊
作者： Chen, Haiyang 1 ; Yu, Haibo 1 ; Yuan, Ling 5 ; Kong, Lingchao 1 ; Li, Shenchang 1 ; Cao, Xiongjun 7 ; Li, Yang 1 ; Wang, Yi 1 ; Lin, Ling 7 ; Guo, Rongrong 7 ; Xie, Taili 7 ; Duan, Wei 1 ; Dai, Zhanwu 1 ; Fan, Peige 1 ; Li, Shaohua 1 ; Liang, Zhenchang 1 ; Wang, Lijun 1 ;
作者机构： 1.Chinese Acad Sci, Inst Bot, State Key Lab Plant Divers & Specialty Crops, Beijing Key Lab Grape Sci & Enol, Beijing 100093, Peoples R China
2.China Natl Bot Garden, Beijing 100093, Peoples R China
3.Henan Agr Univ, Coll Tobacco Sci, Zhengzhou 450002, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Univ Kentucky, Dept Plant & Soil Sci, Lexington, KY 40546 USA
6.Univ Kentucky, Kentucky Tobacco Res & Dev Ctr, Lexington, KY 40546 USA
7.Guangxi Acad Agr Sci, Nanning 530007, Peoples R China
期刊名称：NATURE COMMUNICATIONS （ 影响因子：15.7； 五年影响因子：17.2 ）
ISSN：
年卷期： 2025 年 16 卷 1 期
页码：
收录情况： SCI
摘要： With the increasing challenges posed by global warming and climate change, heat stress has become a significant threat to the sustainable production of grapevines. However, the genetic basis of grapevine thermotolerance remains poorly understood. Here, we combine genome-wide association study with transcriptomic profiling to identify TTC4 (thermotolerance on chromosome 4), a gene encoding a WRKY transcription factor, as a key determinant of thermotolerance in grapevine. TTC4 directly activates two thermotolerance-related genes, HSP18.1 and APX3. We also identify a heat-suppressed repressor SPL13 (SQUAMOSA-promoter binding protein-like 13) that cannot bind to the GTAT element (TTC4T(7631)) in intron 2 of TTC4, but can bind to the natural variant, GTAC (TTC4C(7631)). Grapevine accessions with TTC4C/C(7631) genotype exhibit significantly lower thermotolerance compared to those with the TTC4T/T(7631) and TTC4C/T(7631) genotypes. This fine-tuned regulation contributes to thermotolerance divergence among grapevine populations. The TTC4T(7631) haplotype holds significant potential as a genetic resource for breeding thermotolerant grapevine varieties.
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