相关实验视频
Updated: Jul 13, 2025

07:02
Polysome Purification from Soybean Symbiotic Nodules
Published on: July 1, 2022
1.5K
通过细菌生物活性提取物增强大豆种子发芽过程中的透应激耐受性
Sang Tae Kim1,2, Mee Kyung Sang1
1Division of Agricultural Microbiology, National Institute of Agricultural Sciences, Rural Development Administration, Wanju, Republic of Korea.
PloS one
|October 12, 2023
概括
来自Bacillus butanolivorans KJ40和B. siamensis H30-3的生物刺激性细菌提取物在透应激下增强大豆种子的发芽. 种子治疗改善了抗氧化活性和基因表达,提高了抗旱能力和作物产量.
科学领域:
- 农业科学 农业科学
- 植物生理学 植物生理学
- 微生物学 微生物学
背景情况:
- 大豆 (甘氨酸最大 (L.) Merr.)) 是一种大豆. 生产力受到非生物应激的影响,特别是发芽期间的透应激.
- 来自有益细菌的生物刺激剂显示出减轻作物压力影响的潜力.
- 了解大豆中承受压力的分子机制对于农业的进步至关重要.
研究的目的:
- 评估来自Bacillus butanolivorans KJ40和B. siamensis H30-3的生物活性提取物在赋予大豆种子对透应激耐受性的有效性.
- 在模拟干旱条件下,研究用细菌提取物处理的大豆种子的生理和分子反应.
- 评估这些生物兴奋剂治疗对抗氧化剂防御系统和激素信号通路的影响.
主要方法:
- 用细菌提取物 (KJ40E,H30-3E) 浸泡处理大豆种子,并使用聚乙烯甘醇6000 (PEG) 施加透应激.
- 测量的生理参数包括马隆迪阿尔海德含量,抗氧化酶活性 (catalase,谷氨过氧化酶,谷氨减少酶) 和糖含量.
- 基因表达分析的重点是 gibberellic 酸 (GA) -生物合成和酸 (ABA) 信号通路.
主要成果:
- 生物刺激剂治疗降低了脂质过氧化 (甲) 并增强了在透应激下抗氧化酶活性.
- 在经过处理的种子中观察到GA合成基因 (GmGA2ox1,GmGA3) 和ABA信号基因 (GmABI4,GmDREB1) 的上调.
- 在KJ40E处理的种子中,GA/ABA比率增加,在压力下的H30-3E处理的种子中,葡萄糖含量下降.
结论:
- 用KJ40E和H30-3E提取物的浸泡处理有效地提高了大豆种子在发芽期间对透应激的抵抗力.
- 这些细菌提取物通过调节抗氧化防御和激素信号通路来改善细胞损伤.
- 这种种子处理策略有望在干旱条件下改善大豆发芽,可能提高作物产量和质量.
相关概念视频
Factors Influencing Microbial Growth: Osmolarity
24
Osmolarity is the measure of solute concentration in a solution. It plays a critical role in determining water availability for organisms. Water moves across semipermeable membranes through osmosis, flowing from regions of lower solute concentration (more dilute) to regions of higher solute concentration (more concentrated).In high-solute environments, microbial cells lose water, leading to dehydration and inhibited growth. The extent to which water is available to microbes in such environments...
24
Responses to Salt Stress
13.2K
Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
13.2K
Responses to Drought and Flooding
10.7K
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.
10.7K

