增强大米防御:外源可以提高GABA水平,防止WBPH感染
Rahmatullah Jan1,2, Sajjad Asaf3, Lubna3
1Department of Applied Biosciences, Graduate School, Kyungpook National University, Daegu 41566, Republic of Korea.
Antioxidants (Basel, Switzerland)
|November 27, 2024
概括
外源和胺黄油酸 (GABA) 补充剂通过改善生理和生化机制来增强的生长和对白背虫 (WBPH) 侵袭的耐受性.
科学领域:
- 植物科学 植物科学
- 农业科学 农业科学
- 生物化学 生化学
背景情况:
- 白背虫 (WBPH) 的侵袭严重影响了大米的产量和质量.
- 了解植物对害虫压力的反应对于开发可持续农业至关重要.
- 营养素和信号分子的外源应用可以调节植物防御机制.
研究的目的:
- 调查和胺黄油酸 (GABA) 对生长和在WBPH感染下承受压力的影响.
- 阐明和GABA的保护作用背后的生理和生化机制.
- 评估这些补充剂在减轻WBPH损伤方面的潜力.
主要方法:
- 米植物经历了WBPH感染,有或没有和GABA补充剂.
- 测量了表型特征 (芽/根长度,叶子宽度,数,长度,相对含水量).
- 分析了包括氧化应激指标 (H2O2,O2•−,电解质泄漏),抗氧化酶活性 (CAT,POD,SOD),激素水平 (ABA,SA) 和氨基酸生物合成在内的生理标志物.
- 研究了在调节GABA分流通路和离子稳态中的作用.
主要成果:
- WBPH压力显著降低了米生长参数,但和GABA补充剂增强了芽和根的长度.
- 这两种补充剂都减少了氧化应激标志物和电解质泄漏.
- 在压力下,GABA显著增强了抗氧化酶活动 (CAT,POD,SOD).
- 和GABA增加了压力激素的积累 (ABA,SA),促进了口腔的关闭,并增强了水的保存.
- 调节了GABA分流路径,增加了GABA和酸盐水平.
- 补充改善了氨基酸生物合成和离子稳态 (Ca,Fe,Mg).
结论:
- 外源和GABA有效地提高了大米对WBPH感染的耐受性.
- 这些补充剂调节关键的生理和生化途径,包括抗氧化防御,激素信号和营养吸收.
- 和GABA是大米种植中可持续害虫管理的有希望的策略.
相关概念视频
Feedback Regulation of Calcium Concentration
3.3K
Calcium is an essential signaling molecule required for various cellular functions. Calcium pumps and ion channels on cell and organellar membranes, such as those on the endoplasmic reticulum (ER), regulate calcium concentrations inside the cell. They remain closed, keeping the cytosolic calcium levels low at a resting state.
Various transmembrane receptors, such as G protein-coupled receptors (GPCRs), elicit a response to extracellular signals by increasing cytosolic calcium. Activated GPCRs...
Various transmembrane receptors, such as G protein-coupled receptors (GPCRs), elicit a response to extracellular signals by increasing cytosolic calcium. Activated GPCRs...
3.3K
Calmodulin-dependent Signaling
5.1K
Calmodulin (CaM) is a calcium-binding protein in eukaryotes that controls various calcium-regulated cellular processes. It has four calcium-binding sites that bind calcium to form the calcium-calmodulin ( Ca2+-CaM) complex. GPCR stimulation increases the calcium levels in the cells that bind to CaM and induces a conformational change.
The Ca2+-CaM complex does not have enzymatic activity by itself. Instead, the complex binds downstream target proteins, including membrane proteins or enzymes,...
The Ca2+-CaM complex does not have enzymatic activity by itself. Instead, the complex binds downstream target proteins, including membrane proteins or enzymes,...
5.1K
Responses to Drought and Flooding
10.6K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
10.6K
Ligand-Gated Ion Channel Receptor: Gating Mechanism
2.1K
Ligand-gated ion channels are transmembrane proteins that play a vital role in intercellular communication and functions of the nervous system. They allow the influx of ions across the membrane once the neurotransmitter binds, allowing the subsequent transmission of electrical excitation across the neurons. Other ligand-gated ion channels, like the γ-aminobutyric acid (GABA) receptor, permit anions like chloride into the cells on the binding of the GABA molecule. Their entry into the cell...
2.1K
Defenses Against Pathogens and Herbivores
23.1K
Plants present a rich source of nutrients for many organisms, making it a target for herbivores and infectious agents. Plants, though lacking a proper immune system, have developed an array of constitutive and inducible defenses to fend off these attacks.
23.1K
Adaptations that Reduce Water Loss
25.1K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
25.1K


