Liu Suifei, He Yongming, Fu Yongqi, Zeng Xiaochun
Jiangxi Agricultural University, Nanchang, 330013 China.
Jiangxi Agricultural Engineering College, Zhangshu, 331200 China.
3 Biotech. 2021 Apr;11(4):181. doi: 10.1007/s13205-021-02743-6. Epub 2021 Mar 20.
Flowering time is a critical trait reflecting the adaptation of plants to their environments. Our initial research has shown that exogenous methyl jasmonate (MeJA) significantly promoted the floret opening of sorghum. To better understand the mechanism of this phenomenon in sorghum, the comparative transcriptome analysis was performed. Transcriptomic analysis showed that the most number of differentially expressed genes was presented between control plants and plants treated with 2.0 mM exogenous MeJA in 2.5 h. A large number of differentially expressed genes were assigned to the subcategory of carbohydrate metabolism and lipid metabolism. The transcriptomic analysis of differentially expressed genes involved in glycolysis/gluconeogenesis and tricarboxylic acid cycle indicated a close relationship between carbohydrates metabolism and flowering. In addition, potassium uptake proteins and aquaporins also played important role in response to the exogenous MeJA in the flowering process. These results provide insights into the effect of MeJA on flowering time and explore the possible molecular mechanism of advancing the flowering period by spraying MeJA.
The online version contains supplementary material available at 10.1007/s13205-021-02743-6.
开花时间是反映植物对环境适应性的关键性状。我们的初步研究表明，外源茉莉酸甲酯（MeJA）显著促进了高粱小花的开放。为了更好地理解高粱中这一现象的机制，进行了比较转录组分析。转录组分析表明，在对照植株和用2.0 mM外源MeJA处理2.5小时的植株之间，差异表达基因的数量最多。大量差异表达基因被归类到碳水化合物代谢和脂质代谢亚类。参与糖酵解/糖异生和三羧酸循环的差异表达基因的转录组分析表明，碳水化合物代谢与开花之间存在密切关系。此外，钾吸收蛋白和水通道蛋白在开花过程中对外源MeJA的响应中也发挥着重要作用。这些结果为MeJA对开花时间的影响提供了见解，并探索了通过喷施MeJA提前花期的可能分子机制。
在线版本包含可在10.1007/s13205-021-02743-6获取的补充材料。
