由PGPR驱动的植物修复和Miscanthus × giganteus对微量元素诱导的压力的生理化学反应
Asil A Nurzhanova1, Valentina Pidlisnyuk2, Ramza Berzhanova3
1Institute of Plant Biology and Biotechnology, Timiryazev 45, Almaty, Kazakhstan, 050040.
Environmental science and pollution research international
|August 10, 2023
概括
促进植物生长的根茎细菌 (PGPRs) 增强了Miscanthus × giganteus适应微量元素毒性的能力. 疫苗注射显著增加了生物质,叶绿素,并稳定了土壤和植物组织中的重金属.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 植物科学 植物科学
背景情况:
- 土壤被微量元素污染给环境带来了风险.
- 使用像Miscanthus × giganteus这样的植物进行植物修复是一种有前途的策略.
- 促进植物生长的树枝细菌 (PGPRs) 可以增强植物的弹性和植物修复效率.
研究的目的:
- 调查PGPR接种对受Miscanthus × giganteus污染的微量元素土壤植物修复的作用.
- 评估PGPRs对M. × giganteus的生理生物化学参数和微量元素吸收的影响.
- 识别和利用抗TE的PGPR菌株来增强植物修复.
主要方法:
- 在受污染的土壤中从M. × giganteus根球中分离出耐 (Zn) 和 (Pb) 的PGPRs.
- 用精选的PGPR菌株 (Trichosporon sp. CA1,瑞生物 (Rhizobium sp.) 的一种 在Zn1-1中,Shinella sp. Zn5-6, 伪人种 伪人种. 一个类型 (CHA1-4).
- 测量植物生物质,叶绿素含量,抗氧化酶活性和土壤和植物组织中的微量元素度.
主要成果:
- PGPR注射增加了M. × giganteus对TEs的耐受性指数.
- 在地面和根部生物质的产量分别增加了163%和240%.
- 叶绿素含量和Chl a/b比率分别提高了多达30%和21%.
- PGPRs选择性地增加了TE的吸收或稳定了它们在根球中,增强了Pb,V,Cr,Co,Ni,Cu,Cd,As和Ba的稳定.
结论:
- 在微量元素污染的土壤中,PGPR注射显著提高了Miscanthus × giganteus的植物修复潜力.
- 使用特定的抗TE的PGPR菌株可以改善植物生长,耐压力和金属稳定性.
- 建议对孤立的PGPR进行进一步的实验,以优化植物修复策略.
相关概念视频
00:46Bioremediation
19.0K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
19.0K
02:02Responses 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
01:30Environmental Applications of Microorganisms
61
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
61
02:35Key Elements for Plant Nutrition
18.8K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
18.8K
02:41Responses 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