文献类型： 外文期刊
作者： Li, Meng 1 ; Sui, Na 2 ; Lin, Lin 5 ; Yang, Zhen 4 ; Zhang, Yuanhu 1 ;
作者机构： 1.Shandong Agr Univ, Coll Life Sci, State Key Lab Crop Biol, Tai An, Shandong, Peoples R China
2.Shandong Normal Univ, Coll Life Sci, Shandong Prov Key Lab Plant Stress, Jinan, Shandong, Peoples R China
3.Shandong Acad Agr Sci, Jinan, Shandong, Peoples R China
4.Qilu Univ Technol, Sch Biol Engn, Shandong Prov Key Lab Microbial Engn, Shandong Acad Sci, Jinan, Shandong, Peoples R China
5.Water Res Inst Shandong Prov, 125 Lishan Rd, Jinan, Shandong, Peoples R China
关键词： cold stress; lipids; maize; membrane; photosynthesis; transcriptomic profiling
期刊名称：FUNCTIONAL PLANT BIOLOGY （ 影响因子：3.101； 五年影响因子：3.248 ）
ISSN： 1445-4408
年卷期： 2019 年 46 卷 9 期
页码：
收录情况： SCI
摘要： Maize is an important food crop. Chilling stress can decrease maize production by affecting seed germination and seedling growth, especially in early spring. We analysed chlorophyll fluorescence, membrane lipids, secondary metabolites and the transcriptome of two maize inbred lines (chilling-tolerant M54 and chilling-sensitive 753F) after 0, 4 and 24 h cold stress. M54 showed better ability to protect PSII and accumulate secondary metabolites. From RNA sequencing data, we determined that the majority of cold-affected genes were involved in photosynthesis, secondary metabolism, and signal transduction. Genes important for maintaining photosystem structure and for regulating electron transport were less affected by cold stress in M54 than in 753F. Expression of genes related to secondary metabolism and unsaturated fatty acid synthesis were upregulated more strongly in M54 than in 753F and M54 accumulated more unsaturated fatty acids and secondary metabolites. As a result, M54 achieved relatively high cold tolerance by protecting the photosystems and maintaining the stability of cell membranes.
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