Simultaneous Application of Red and Blue Light Regulate Carbon and Nitrogen Metabolism, Induces Antioxidant Defense System and Promote Growth in Rice Seedlings under Low Light Stress

被引:13
|
作者
Ren, Maofei [1 ]
Liu, Shanzhen [1 ]
Mao, Guiling [2 ]
Tang, Chengzhu [1 ]
Gai, Panpan [1 ]
Guo, Xiaoli [3 ]
Zheng, Huabin [1 ]
Wang, Weiqin [1 ]
Tang, Qiyuan [1 ]
机构
[1] Hunan Agr Univ, Coll Agron, Changsha 410128, Peoples R China
[2] Shanxi Agr Univ, Coll Hort, Taigu 030801, Peoples R China
[3] Henan Agr Univ, Coll Agron, Zhengzhou 450046, Peoples R China
基金
中国国家自然科学基金;
关键词
rice; red light; blue light; antioxidant defense system; carbon and nitrogen metabolism; QUALITY; YIELD;
D O I
10.3390/ijms241310706
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The purpose of this study is to determine the effect of light quality on growth, carbon and nitrogen metabolism, and antioxidant defense system of rice seedlings. Six light conditions were employed, including white (W), red (R), blue (B), combined LED of R and B at 3:1 (R3B1), combined LED of R and B at 1:1 (R1B1), as well as combined LED of R and B at 1:3 (R1B3). Combined application of red light and blue light could promote the growth of rice seedling leaves and roots under low light stress to varying degrees, increase the photosynthetic area by increasing the leaf area, improve the root characteristics by increasing the root volume, and increase the dry matter accumulation of rice seedlings. In addition, the combination of red light and blue light could increase carbon and nitrogen metabolites in rice seedling leaves, regulate the expression of genes related to carbon and nitrogen metabolism and enzyme activity, and enhance the antioxidant enzyme activity of rice seedlings. These results indicate that red light and blue light directly have synergistic effects which can regulate the carbon and nitrogen metabolism of rice seedlings, promote the morphogenesis of rice seedlings under low light stress, and promote growth, which has never been reported in previous studies. This study is a new discovery in the application of light quality in crop production and provides new avenues to enhance crop stress resistance. However, further study is needed to explore the physio-biochemical and molecular mechanisms of light quality in crop production.
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页数:23
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