期刊
GENES
卷 10, 期 9, 页码 -出版社
MDPI
DOI: 10.3390/genes10090662
关键词
RNA sequencing; Solanum lycopersicum; different light regimes; differentially expressed genes; photosynthesis
资金
- Shaanxi Provincial Key Research and Development Project [2018TSCXL-NY-05-05]
- Research and development of structure optimization and supporting technology of energy-saving solar greenhouse [2017ZDXM-NY-057]
- Study on key technologies of healthy vegetable production in protected-horticulture with high efficient utilization of resources [2016ZB09]
- Chinese Scholarship Council (CSC) [201606300007]
Plants grown under highly variable natural light regimes differ strongly from plants grown under constant light (CL) regimes. Plant phenotype and adaptation responses are important for plant biomass and fitness. However, the underlying regulatory mechanisms are still poorly understood, particularly from a transcriptional perspective. To investigate the influence of different light regimes on tomato plants, three dynamic light (DL) regimes were designed, using a CL regime as control. Morphological, photosynthetic, and transcriptional differences after five weeks of treatment were compared. Leaf area, plant height, shoot /root weight, total chlorophyll content, photosynthetic rate, and stomatal conductance all significantly decreased in response to DL regimes. The biggest expression difference was found between the treatment with the highest light intensity at the middle of the day with a total of 1080 significantly up-/down-regulated genes. A total of 177 common differentially expressed genes were identified between DL and CL conditions. Finally, significant differences were observed in the levels of gene expression between DL and CL treatments in multiple pathways, predominantly of plant-pathogen interactions, plant hormone signal transductions, metabolites, and photosynthesis. These results expand the understanding of plant development and photosynthetic regulations under DL conditions by multiple pathways.
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