草莓冷响应转录因子FaICE1克隆及其互作蛋白分析

Low temperature is one of the important factors affecting strawberry production in winter greenhouse. Cloning and identification of genes related to cold resistance have important significance for theoretical research and practical production of strawberry. In this paper, a transcription factor response to low temperature was cloned and identified in octoploid strawberry (Fragaria × ananassa). The expression of FaICE1 gene decreased at the early stage of fruit development, and became stable after the stage of white fruit. The experiment showed that the expression of FaICE1 was induced by low temperature(4 ℃) stress and jasmonic acid (JA), respectively. It was further proved that FaICE1 interacted directly with FaSnRK2.6, which is the key signal protein of strawberry fruit resistance to low temperature, it's suggesting that FaICE1 might be the downstream signal component of FaSnRK2.6 and participated in the development and ripening regulation of strawberry fruit under low temperature stress.