Cassava (Manihot esculenta) Slow Anion Channel (MeSLAH4) Gene Overexpression Enhances Nitrogen Assimilation, Growth, and Yield in Rice
文献类型： 外文期刊
作者： Song, Linhu 1 ; Wang, Xingmei 1 ; Zou, Liangping 4 ; Prodhan, Zakaria 3 ; Yang, Jiaheng 1 ; Yang, Jianping 1 ; Ji, Li 1 ; Li, Guanhui 1 ; Zhang, Runcong 1 ; Wang, Changyu 1 ; Li, Shi 1 ; Zhang, Yan 1 ; Ji, Xiang 1 ; Zheng, Xu 1 ; Li, Wanchen 5 ; Zhang, Zhiyong 3 ;
作者机构： 1.Henan Agr Univ, Coll Agron, State Key Lab Wheat & Maize Crop Sci, Zhengzhou, Peoples R China
2.Henan Agr Univ, Coll Agron, Ctr Crop Genome Engn, Zhengzhou, Peoples R China
3.Neijiang Normal Univ, Coll Life Sci, Neijiang, Peoples R China
4.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Haikou, Peoples R China
5.Sichuan Agr Univ, Maize Res Inst, Key Lab Biol & Genet Improvement Maize Southwest R, Minist Agr, Chengdu, Peoples R China
关键词： cassava; slow anion channel; transgenic rice; nitrogen use efficiency; root phenotype
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：6.627； 五年影响因子：7.255 ）
ISSN： 1664-462X
年卷期： 2022 年 13 卷
页码：
收录情况： SCI
摘要： Nitrogen is one of the most important nutrient elements required for plant growth and development, which is also immensely related to the efficient use of nitrogen by crop plants. Therefore, plants evolved sophisticated mechanisms and anion channels to extract inorganic nitrogen (nitrate) from the soil or nutrient solutions, assimilate, and recycle the organic nitrogen. Hence, developing crop plants with a greater capability of using nitrogen efficiently is the fundamental research objective for attaining better agricultural productivity and environmental sustainability. In this context, an in-depth investigation has been conducted into the cassava slow type anion channels (SLAHs) gene family, including genome-wide expression analysis, phylogenetic relationships with other related organisms, chromosome localization, and functional analysis. A potential and nitrogen-responsive gene of cassava (MeSLAH4) was identified and selected for overexpression (OE) analysis in rice, which increased the grain yield and root growth related performance. The morpho-physiological response of OE lines was better under low nitrogen (0.01 mm NH4NO3) conditions compared to the wild type (WT) and OE lines under normal nitrogen (0.5 mm NH4NO3) conditions. The relative expression of the MeSLAH4 gene was higher (about 80-fold) in the OE line than in the wild type. The accumulation and flux assay showed higher accumulation of NO 3 - and more expansion of root cells and grain dimension of OE lines compared to the wild type plants. The results of this experiment demonstrated that the MeSLAH4 gene may play a vital role in enhancing the efficient use of nitrogen in rice, which could be utilized for high-yielding crop production.
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