Natural variations of growth thermo‐responsiveness determined by SAUR 26/27/28 proteins in Arabidopsis thaliana
Zhixue Wanga b c d, Leiyun Yanga c, Zhenhua Liua c, Minghui Lua c e f, Minghui Wangg h, Qi Sung h, Yiheng Lani j, Tieliu Shii j, Dianxing Wub d, Jian Huaa c k l✉
- aSchool of Integrated Plant Science Plant Biology Section Cornell University Ithaca NY 14853 USA
- bState Key Laboratory of Rice Biology Institute of Nuclear Agricultural Sciences Zhejiang University Hangzhou 310029 China
- cSchool of Integrated Plant Science, Plant Biology Section, Cornell University, Ithaca, NY, 14853 USA
- dState Key Laboratory of Rice Biology, Institute of Nuclear Agricultural Sciences, Zhejiang University, Hangzhou, 310029 China
- eCollege of Horticulture Northwest A&
- fF University Yangling 712100 China
- gBioinformatics Facility Institute of Biotechnology Cornell University Ithaca NY 14853 USA
- hBioinformatics Facility, Institute of Biotechnology, Cornell University, Ithaca, NY, 14853 USA
- iCenter for Bioinformatics and Computational Biology, and the Institute of Biomedical Sciences School of Life Science East China Normal University Shanghai 200241 China
- j
Papers open inside SciRah from the original publisher or repository; SciRah never hosts them.
Abstract
How diversity in growth thermo-responsiveness is generated for local adaptation is a long-standing biological question. We investigated molecular genetic basis of natural variations in thermo-responsiveness of plant architecture in Arabidopsis thaliana. We measured the extent of rosette architecture at 22°C and 28°C in a set of 69 natural accessions and determined their thermo-responsiveness of plant architecture. A genome-wide association study was performed to identify major loci for variations in thermo-responsiveness. The SAUR26 subfamily, a new subfamily of SAUR genes, was identified as a major locus for the thermo-responsive architecture variations. The expression of SAUR26/27/28 is modulated by temperature and PIF4. Extensive natural polymorphisms in these genes affect their RNA expression levels and protein activities and influence the thermo-responsiveness of plant architecture. In addition, the SAUR26 subfamily genes exhibit a high variation frequency and their variations are associated with the local temperature climate. This study reveals that the SAUR26 subfamily is a key variation for thermo-responsive architecture and suggests a preference for generating diversity for local adaptation through signaling connectors.
TL;DRThis study reveals that the SAUR26 subfamily is a key variation for thermo-responsive architecture and suggests a preference for generating diversity for local adaptation through signaling connectors. (Semantic Scholar)