转录基因增强的大米谷物代谢模型确定了胺水平作为谷物度的标志物
Niaz Bahar Chowdhury1, Anil Kumar Nalini Chandran2, Harkamal Walia2
1Department of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, 1600 Vine Street, Lincoln, NE, 68505, USA.
Scientific reports
|May 12, 2025
概括
温暖的夜间温度 (WNT) 通过改变新陈代谢途径,增加了大米粒的状. 这项研究确定了关键的代谢标志物和调节剂,为开发弹性大米品种提供了洞察力.
科学领域:
- 植物科学 植物科学
- 代谢工程是代谢工程.
- 气候变化生物学 气候变化生物学
背景情况:
- 全球变暖导致气温上升,对大米谷物质量和产量产生负面影响.
- 较温暖的夜间温度 (WNT) 是全球变暖影响大米质量的重要后果,特别是谷物质量.
研究的目的:
- 调查WNT对大米粒质量的影响,重点关注谷物质量.
- 通过使用综合计算和实验方法,在WNT下识别导致大米粒状的代谢因素和调节剂.
主要方法:
- 一个大米粒基因组规模代谢模型 (GSM) 的重建,iOSA3474-G.
- 从控制和WNT条件中整合日间不同时间的转录学数据.
- 代谢流量和瓶分析的分析,以确定关键的调节者和生长阶段 (无氧,正常,高氧).
主要成果:
- 确定了与氧气水平相关的三种不同生长阶段 (无氧,正常,高氧) 的米粒.
- 提议将histidine作为normoxia的标志物 (与灰性相关) 和tyrosine作为hyperoxia的标志物.
- 确定了核二酸盐激酶作为中央代谢调节剂,并表明了单酸酸盐减少酶和高氧化症之间的联系.
结论:
- 研究结果提供了针对性的洞察力,了解了在WNT下控制大米谷的代谢网络.
- 整合GSM和转录学增强了对环境因素,新陈代谢和谷物质量的理解.
- 确定了开发适应气候变化的米品种的潜在标志物.
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