普普鲁斯欧弗拉蒂卡植物的耐受性 PePCR3 提高了耐受性
Kun Qiao1, Qinghua Shan2, Haizhen Zhang2
1College of Horticulture and Landscape Architecture, Northeast Agricultural University, Changjiang Road No. 600, Xiangfang District, Harbin 150030, PR China.
Tree physiology
|August 24, 2023
概括
用植物抗蛋白 (PCR) 进行工程改造的树植物对等有毒重金属的耐受性得到改善. 这种基因改造增强了的分泌和转移,为污染土壤的植物修复提供了潜力.
科学领域:
- 环境科学 环境科学
- 植物生物学 植物生物学
- 生物技术是生物技术.
背景情况:
- 土壤被有毒重金属污染是一个重大的环境挑战.
- 使用能够管理重金属吸收和转移的植物进行植物修复是一种有希望的策略.
- 植物抗 (PCR) 蛋白与重金属转移有关,特别是和 (Cd).
研究的目的:
- 调查Populus euphratica PCR3 (PePCR3) 在植物中的耐受性和转移中的作用.
- 评估PePCR3作为植物修复的遗传资源的潜力.
主要方法:
- 酵母表达系统测试PePCR3功能.
- 产生和分析PePCR3-过度表达 (OE) 的转基因杂交树系.
- 实时定量PCR用于基因表达分析.
- 定位研究以确定PePCR3细胞位置.
- 在应力下的生理和生物质测量.
主要成果:
- 表达PePCR3的酵母表现出增强的Cd耐受性和减少的Cd积累.
- 在Cd压力下,苗中的PePCR3表达被上调.
- PePCR3局部化到等离子体膜上.
- 与野生类型 (WT) 相比,PePCR3-OE转基因系显示出更好的生长,生物量和Cd耐受性.
- 转基因线在根部分泌了更多的Cd,但在茎和叶子上转移了更多的Cd.
- 在PePCR3-OE系中,Cd压力诱导了8个载体基因的转录水平.
结论:
- PePCR3增强了耐受性,并影响了树植物中的转移.
- PePCR3与其他载体相互作用,以促进Cd转位.
- PePCR3 是一种有价值的遗传资源,用于开发树系,用于污染土壤的植物修复.
更多相关视频
09:13Hydroponics: A Versatile System to Study Nutrient Allocation and Plant Responses to Nutrient Availability and Exposure to Toxic Elements
Published on: July 13, 2016
31.9K
06:32Plant Growth and Agrobacterium-mediated Floral-dip Transformation of the Extremophyte Schrenkiella parvula
Published on: January 7, 2019
13.2K
相关概念视频
01:27C4 Pathway and CAM
45.7K
Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
C4 Pathway
The C4 pathway is used by plants such as...
C4 Pathway
The C4 pathway is used by plants such as...
45.7K
01:57Adaptations that Reduce Water Loss
25.7K
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.
25.7K
01:28Global Regulatory Systems
44
Global regulatory systems in bacteria enable rapid and coordinated responses to environmental changes by integrating sensory inputs with gene expression, ensuring efficient adaptation to fluctuating conditions. Key global regulatory mechanisms include regulons, two-component systems, sigma factors, and secondary messengers.Regulons and Global RegulatorsA regulon is a collection of genes and operons controlled by a common global regulator. These regulators enable bacteria to prioritize resource...
44
01:46The Calvin Benson Cycle
4.6K
Ribulose 1,5- bisphosphate carboxylase/oxygenase (RuBisCo) is a critical enzyme that catalyzes carbon dioxide assimilation during photosynthesis. However, it is an inefficient enzyme, having an extremely slow catalytic rate. A typical enzyme can process about a thousand molecules per second; however, RuBisCo fixes only around three-carbon dioxides per second. Photosynthetic cells compensate for this slow rate by synthesizing very high amounts of RuBisCo, making it the most abundant single...
4.6K
01:23Stringent Response in E. coli
31
Bacterial growth is closely tied to nutrient availability, with cells proliferating exponentially under favorable conditions and entering a stationary phase when resources become scarce. This transition is mediated by a regulatory mechanism known as the stringent response, which allows bacteria to adapt to nutrient deprivation by modulating gene expression and metabolic activity.During nutrient scarcity, intracellular amino acid levels decline. It results in the accumulation of uncharged tRNAs...
31