Genome-Wide Identification and Expression Analysis of SlNRAMP Genes in Tomato under Nutrient Deficiency and Cadmium Stress during Arbuscular Mycorrhizal Symbiosis
文献类型： 外文期刊
作者： Liu, Junli 1 ; Bao, Xiaoqi 1 ; Qiu, Gaoyang 1 ; Li, Hua 1 ; Wang, Yuan 1 ; Chen, Xiaodong 1 ; Fu, Qinglin 1 ; Guo, Bin 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Environm Resource Soil & Fertilizer, State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou 310021, Peoples R China
2.Zhejiang Univ Technol, Coll Environm, Hangzhou 310032, Peoples R China
关键词： arbuscular mycorrhizal fungi; cadmium; gene expression; NRAMP; tomato
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：4.9； 五年影响因子：5.6 ）
ISSN： 1661-6596
年卷期： 2024 年 25 卷 15 期
页码：
收录情况： SCI
摘要： Arbuscular mycorrhizal (AM) fungi are well known for enhancing phosphorus uptake in plants; however, their regulating roles in cation transporting gene family, such as natural resistance-associated macrophage protein (NRAMP), are still limited. Here, we performed bioinformatics analysis and quantitative expression assays of tomato SlNRAMP 1 to 5 genes under nutrient deficiency and cadmium (Cd) stress in response to AM symbiosis. These five SlNRAMP members are mainly located in the plasma or vacuolar membrane and can be divided into two subfamilies. Cis-element analysis revealed several motifs involved in phytohormonal and abiotic regulation in their promoters. SlNRAMP2 was downregulated by iron deficiency, while SlNRAMP1, SlNRAMP3, SlNRAMP4, and SlNRAMP5 responded positively to copper-, zinc-, and manganese-deficient conditions. AM colonization reduced Cd accumulation and expression of SlNRAMP3 but enhanced SlNRAMP1, SlNRAMP2, and SlNRMAP4 in plants under Cd stress. These findings provide valuable genetic information for improving tomato resilience to nutrient deficiency and heavy metal stress by developing AM symbiosis.
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