对Dicranopteris pedata针对REEs的专业防御系统的转录学证据
Wenzhi Zhou1, Haiyan Wang1, Yonghe Han2
1School of Geographical Sciences, Fujian Normal University, Fuzhou, Fujian 350117, China; Key Laboratory for Humid Subtropical Eco-Geographical Processes of the Ministry of Education, Fujian Normal University, Fuzhou, Fujian 350117, China.
迪克拉诺普特里斯·佩达塔 (Dicranopteris pedata) 有效地吸收稀土元素 (REEs),但高度会引起压力,影响光合作用和氧化损伤. 这种植物采用各种基因表达策略来排毒和减轻压力.
科学领域:
- 环境科学 环境科学
- 植物生理学 植物生理学
- 生物化学 生物化学
背景情况:
- 迪克拉诺普特里斯·佩达塔 (Dicranopteris pedata) 是一个已知的稀土元素 (REEs) 的高积累者.
- 在D. pedata中,REEs吸收和运输的基础分子机制在很大程度上是未知的.
- 了解植物对 REE 的反应对于植物修复和生态研究至关重要.
研究的目的:
- 研究Dicranopteris pedata对伊特 (Y) 和 (Ce) 压力的生理和转录反应.
- 为了阐明REEs吸收,运输和排毒在D. pedata中的分子机制.
主要方法:
- 对D. pedata暴露于不同度的伊特 (Y) 和 (Ce).
- 分析与光合作用,氧化应激和生物合成途径相关的基因表达.
- 对酶活性进行测量,包括超氧化物脱酶 (SOD) 和酶 (CAT).
主要成果:
- 低度的REEs促进了光合作用基因表达,而高度则抑制了光合作用.
- 观察到ABC载体基因 (PstS,ABCA3,ABCB1,ABCC1,ABCD3) 的下调,这可能会减轻REEs的毒性.
- 参与黄类,黄类,素,异类类和菌素生物合成的基因的升级,以及纳夫他林,卡普罗拉克坦,托洛,日拉尼奥尔和基酸的降解途径,表明了减轻压力和排毒机制.
结论:
- 迪克拉诺普特里斯·佩达塔 (Dicranopteris pedata) 呈现出复杂的生理和转录性调节机制,以应对REE的压力.
- 植物利用抗氧化酶活性和保护性化合物的生物合成来应对压力,但这些机制在高REE暴露下被压倒.
- 与排毒途径相关的基因表达对D. pedata对REE的耐受性起着重要作用.
更多相关视频
12:18A Strategy to Validate the Role of Callose-mediated Plasmodesmal Gating in the Tropic Response
Published on: April 17, 2016
11:50Bacterial Leaf Infiltration Assay for Fine Characterization of Plant Defense Responses using the Arabidopsis thaliana-Pseudomonas syringae Pathosystem
Published on: October 1, 2015
相关概念视频
Adaptations that Reduce Water Loss
Responses to Heat and Cold Stress
Introduction to Plant Diversity
Defenses Against Pathogens and Herbivores
Transcription
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
Responses to Drought and Flooding
