Bibliographic Details
| Title: |
花生根系响应低pH胁迫的形态及生理特性研究. |
| Alternate Title: |
Root morphology and physiology responses of peanuts seedlings to low-pH stress. |
| Authors: |
刘玲1 haasliuling@163.com, 张翔1 zxtf203@163.com, 索炎炎1, 李亮1, 段贤杰2, 徐凤丹1, 邱岭军1, 司贤宗1, 李倩1, 闫萌1, 程培军1 |
| Source: |
Chinese Journal of Oil Crop Sciences. 2026, Vol. 48 Issue 3, p118-134. 17p. |
| Subject Terms: |
*Plant root morphology, *Soil acidity, *Transcriptomes, *Hydroponics, *Lignin structure, *Antioxidants, *Peanut growing, *Root growth |
| Abstract (English): |
To investigate the mechanism of peanut root response to low pH stress, hydroponic experiments were conducted with the cultivar Yuanza 9307 under varying pH conditions (pH 3.0-6.0) to systematically examine growth phenotypes and physiological characteristics, transcriptome sequencing was employed to identify key path‐ ways and genes. Results indicated that compared to pH 6.0, low-pH stress significantly inhibited plant biomass ac‐ cumulation, with a notable reduction in root-to-shoot ratio at pH ≤ 3.5. In the hydtoponic system with pH 3.5, root activity decreased, root morphology was impaired, and root tip structure was damaged. Transcriptome analysis re‐ vealed that low-pH stress induced the upregulation of genes associated with antioxidant metabolism and lignin bio ‐ synthesis, accompanied by enhanced antioxidant enzyme activities and increased lignin content. Concurrently, genes involved in cell wall metabolism and signal transduction-such as those encoding lectin proteins, GDSL-motif lipases, TMV resistance proteins, and endoglucan transferases-were significantly induced in roots, suggesting their potential roles in regulating root growth under low pH conditions. This study provides a theoretical foundation for further deciphering the molecular mechanisms of peanut tolerance to low-pH stress. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): |
为探究花生根系响应低 pH 胁迫的机制, 本研究以花生品种远杂 9307 为材料, 通过水培试验系统研究了 不同 pH (pH 3.0~pH 6.0) 下花生生长表型与生理特征, 并结合转录组测序鉴定了关键通路及相关基因。结果表明, 与 pH 6.0 相比, 低 pH 胁迫显著抑制了植株生物量累积, 且 pH ≤ 3.5 时根冠比显著下降。pH 3.5 导致根系活力降低, 根系变小, 根尖结构遭到破坏。转录组分析表明, 花生通过诱导抗氧化代谢和木质素合成相关基因的表达响应低 pH 胁迫, 促进根系抗氧化酶活和木质素含量增加; 同时, 低 pH 胁迫显著提升细胞壁代谢和信号转导过程相关基因 (如凝集素蛋白基因、GDSL 基序脂肪酶基因、TMV 抗性蛋白基因以及内切葡聚糖转移酶基因等) 在根中的表达, 提 示其在调控低 pH 胁迫下花生根系生长中发挥重要作用。本研究为深入解析花生耐低 pH 的分子机制提供了理论 依据。 [ABSTRACT FROM AUTHOR] |
| Database: |
Energy & Power Source |
