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Winter warming post floral initiation delays flowering via bud dormancy activation and affects yield in a winter annual crop

第一作者Xiang Lu

第一单位John Innes Centre

通讯作者Steven Penfield

t Abstract 

背景回顾Winter annual life history is conferred by the requirement for vernalization to promote the floral transition and control the timing of flowering

主要发现Here we show using winter oilseed rape that flowering time is controlled by inflorescence bud dormancy in addition to vernalization

结果1-突变体库筛选Winter warming treatments given to plants in the laboratory and field increase flower bud abscisic acid levels and delay flowering in spring. 

结果2-pdx1.1突变及拯救We show that the promotive effect of chilling reproductive tissues on flowering time is associated with the activity of two FLC genes specifically silenced in response to winter temperatures in developing inflorescences, coupled with activation of a BRANCHED1-dependent bud dormancy transcriptional module. 

结果3-非磷酸化维生素B6We show that adequate winter chilling is required for normal inflorescence development and high yields in addition to the control of flowering time. 

结论Because warming during winter flower development is associated with yield losses at the landscape scale, our work suggests that bud dormancy activation may be important for effects of climate change on winter arable crop yields.


Winter warming during flower bud development delays flowering and is associated with yield reductions.

 摘 要 


doi: https://doi.org/10.1073/pnas.2204355119

Journal: PNAS

Published date: September 19, 2022

Xiang Lu, Carmel M. O’Neill, Samuel Warner, Qing Xiong, Xiaochao Chen, Rachel Wells, Steven Penfield. Winter warming post floral initiation delays flowering via bud dormancy activation and affects yield in a winter annual crop. PNAS, 2022, 119(39): e2204355119. DOI: https://doi.org/10.1073/pnas.2204355119


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