在玉米粒填充过程中,ZmNAC128和ZmNAC130在营养摄取和储存中的核心作用
Di Peng1, Shuxing Pan1, Xin Du1
1School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China.
Genes
|June 27, 2024
概括
两种玉米NAC转录因子ZmNAC128和ZmNAC130协调营养吸收和储存,影响谷物产量和质量. 它们调节运输器,限制重金属积累,并增强生物强化必需的矿物质含量.
科学领域:
- 植物分子生物学 植物分子生物学
- 农业科学 农业科学
- 生物化学 生化学
背景情况:
- 谷物填充对于作物产量和质量至关重要.
- 谷物填充期间营养物质运输的中央协调员的存在是未知的.
- ZmNAC128和ZmNAC130是玉米中复制的NAC转录因子.
研究的目的:
- 研究ZmNAC128和ZmNAC130在调节谷物填充中的作用.
- 为了确定参与营养吸收和储存的目标基因.
- 了解它们在重金属和基本矿物运输中的功能.
主要方法:
- 对 *zmnac128 zmnac130* 突变体中差异表达基因的分析.
- 识别高度和差异性表达基因 (hdEGs).
- 基因表达分析和突变核的元素/物质分析.
主要成果:
- 确定了243种与储存代谢和运输体相关的hdEG.
- ZmNAC128/ZmNAC130直接准粉代谢基因 *糖增强剂1*和 *六酶1*.
- 突变核显示了超过10个元素/物质的改变水平,包括增加的重金属和减少的Mg和Zn.
- 六家高调运输商与重金属和金属化物 (HMM) 运输有关.
- ZmNAC128/ZmNAC130激活和酸盐运输体 * ZmNPF1.1 * 和 * ZmPHO1;2 *.
结论:
- ZmNAC128和ZmNAC130作为玉米粒填充中的中央协调员.
- 它们调节储存代谢,包括粉合成.
- 它们的协调行动限制了HMM的吸收,增强了生物强化 (例如,Zn,Mg),并促进了必需营养素的储存.
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