Glutamine rapidly induces the expression of key transcription factor genes involved in nitrogen and stress responses in rice roots

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题名:	Glutamine rapidly induces the expression of key transcription factor genes involved in nitrogen and stress responses in rice roots
作者:	謝明勳;Kan, Chia-Cheng;Chung, Tsui-Yun;Juo, Yan-An;Hsieh, Ming-Hsiun
贡献者:	生醫理工學院生命科學系
关键词:	Amino acids;Analysis;Animal Genetics and Genomics;Aquatic plants;Biomedical and Life Sciences;DNA binding proteins;Genetic aspects;Genetic research;Genomics;Glutamine - metabolism;Life Sciences;Microarrays;Microbial Genetics and Genomics;Nitrates - metabolism;Nitrogen;Nitrogen - metabolism;Oryza - genetics;Oryza - growth & development;Oryza - physiology;Physiological aspects;Plant Genetics and Genomics;Plant genomics;Plant growth;Plant nutrition;Plant Roots - genetics;Plant Roots - metabolism;Proteomics;Research Article;Roots;Seedlings;Signal Transduction;Stress, Physiological;Transcription Factors - genetics;Transcription Factors - metabolism;Transcriptome;Yeasts
日期:	2015-09-25
上传时间:	2026-04-23 11:12:55 (UTC+8)
出版者:	BioMed Central Ltd.;London: Springer Science and Business Media LLC
摘要:	摘要： Background Glutamine is a major amino donor for the synthesis of amino acids, nucleotides, and other nitrogen-containing compounds in all organisms. In addition to its role in nutrition and metabolism, glutamine can also function as a signaling molecule in bacteria, yeast, and humans. By contrast, the functions of glutamine in nutrition and as a signaling molecule remain unclear in plants. Results We demonstrated that glutamine could effectively support the growth of rice seedlings. In glutamine-treated rice roots, the glutamine contents increased dramatically, whereas levels of glutamate remained relatively constant. Transcriptome analysis of rice roots revealed that glutamine induced the expression of at least 35 genes involved in metabolism, transport, signal transduction, and stress responses within 30 min. Interestingly, 10 of the 35 early glutamine responsive genes encode putative transcription factors, including two LBD37 - like genes that are involved in the regulation of nitrogen metabolism. Glutamine also rapidly induced the expression of the DREB1A , IRO2 , and NAC5 transcription factor genes, which are involved in the regulation of stress responses. Conclusions In addition to its role as a metabolic fuel, glutamine may also function as a signaling molecule to regulate gene expression in plants. The rapid induction of transcription factor genes suggests that glutamine may efficiently amplify its signal and interact with the other signal transduction pathways to regulate plant growth and stress responses. Thus, glutamine is a functional amino acid that plays important roles in plant nutrition and signal transduction. 其他題名： BMC Genomics 出版者： London: Springer Science and Business Media LLC 出版日期： 2015-09-25 出處： BMC Genomics, 2015-09, Vol.16 (1), p.731-, Article 731 資源來源： Publicly Available Content Database 版權： Kan et al. 2015 版權： COPYRIGHT 2015 BioMed Central Ltd. 版權： Copyright BioMed Central 2015 識別號： ISSN: 1471-2164 識別號： EISSN: 1471-2164 識別號： DOI: 10.1186/s12864-015-1892-7 識別號： PMID: 26407850
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