Genome-wide identification and expression analysis of NIN-like protein (NLP) genes: Exploring their potential roles in nitrate response in tea plant (Camellia sinensis)
文献类型： 外文期刊
作者： Li, Da 1 ; Jin, Ya 1 ; Lu, Qin-Hua 1 ; Ren, Ning 1 ; Wang, Ying-Qi 3 ; Li, Qing-Sheng 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Sericulture & Tea, Hangzhou 310021, Peoples R China
2.Zhejiang A&F Univ, Coll Hort Sci, Hangzhou 311300, Peoples R China
3.Zhejiang A&F Univ, Coll Tea Sci & Tea Culture, Hangzhou 311300, Peoples R China
关键词： Genome-wide analysis; NLP gene family; Camellia sinensis; Nitrate signalling
期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：6.1； 五年影响因子：6.2 ）
ISSN： 0981-9428
年卷期： 2024 年 207 卷
页码：
收录情况： SCI
摘要： NIN-like proteins (NLPs) are evolutionarily conserved transcription factors that are unique to plants and play a pivotal role in responses to nitrate uptake and assimilation. However, a comprehensive analysis of NLP members in tea plants is lacking. The present study performed a genome-wide analysis and identified 33 NLP gene family members of Camellia sinensis that were distributed unequally across 5 chromosomes. Subcellular localisation predictions revealed that all CsNLP proteins were localised in the nucleus. Conservative domain analysis revealed that all of these proteins contained conserved RWP-RK and PB1 domains. Phylogenetic analysis grouped the CsNLP gene family into four clusters. The promoter regions of CsNLPs harboured cis -acting elements associated with plant hormones and abiotic stress responses. Expression profile analysis demonstrated that CsNLP8 was significantly upregulated in roots under nitrate stress conditions. Subcellular localisation analysis found CsNLP8 localised to the nucleus. Dual-luciferase reporter assay demonstrated that CsNLP8 positively regulated the expression of a nitrate transporter gene (CsNRT2.2). These findings provide a comprehensive characterisation of NLP genes in Camellia sinensis and offer insights into the biological function of CsNLP8 in regulating the response to nitrate -induced stress.
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