Excellence in Research: Unravelling the Genetic Basis for Heavy-Metal Uptake and Tolerance in Nerium oleander Through Transcriptomic Kaleidoscope

卓越的研究：通过转录组万花筒揭示夹竹桃重金属吸收和耐受性的遗传基础

• 批准号: 2247625
• 负责人: Naira Ibrahim
• 金额: $ 88万
• 依托单位: Jackson State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2247625&HistoricalAwards=false
• 关键词: Excellence; Research; Unravelling; Genetic; Basis

The understanding of the genetic basis for plants' uptake and tolerance of heavy metals remains limited. This study aims to investigate the mechanisms by which Nerium oleander, commonly known as oleander, absorbs and withstands heavy metals in its surroundings. By analyzing the plant's genetic composition and investigating gene activation and suppression, scientists seek to unravel the mechanisms that enable Nerium oleander to thrive in polluted areas. This research holds societal relevance as it tackles environmental concerns such as pollution and its impact on ecosystems. What sets this research apart is its innovative approach of employing transcriptomics, which involves studying gene activity, to gain insights into how Nerium oleander copes with heavy-metal contamination. By elucidating the genetic foundation of heavy-metal uptake and tolerance, this study could have far-reaching implications for ecological restoration, phytoremediation (the use of plants to remediate polluted sites), and sustainable agricultural practices. This project thus, represents a significant scientific endeavor that could yield valuable knowledge to address urgent environmental challenges. Overall, this research contributes to the advancement of scientific understanding, offers support for sustainable solutions, and promotes the well-being of our environment and society.The Genetic Mechanisms that regulate heavy-metal uptake and tolerance in plants is poorly understood. This study aims to explore the genetic basis behind Nerium oleander's remarkable ability to absorb and withstand heavy metals in contaminated environments. Specifically, the study seeks to investigate how Nerium oleander can effectively take in and endure heavy metals like cadmium, lead, and zinc without experiencing detrimental effects. The primary objectives of this research include unraveling the molecular pathways and gene regulatory networks that contribute to heavy-metal uptake and tolerance in this plant species. To achieve these goals, a comprehensive transcriptomic analysis will be conducted. RNA samples from plants subjected to heavy-metal stress, as well as control conditions, will be sequenced, enabling the identification and quantification of gene expression patterns. By comparing the transcriptomes of stressed and non-stressed plants, differentially expressed genes associated with heavy-metal uptake and tolerance will be discovered. The project will involve functional enrichment analysis, aiming to identify key transcription factors and signaling pathways involved in the plant's response to heavy-metal stress. By integrating diverse data sets and employing various biological approaches, a comprehensive understanding of the genetic mechanisms underlying heavy-metal uptake and tolerance in Nerium oleander will be achieved. The findings of this research will not only contribute to the broader field of plant stress responses but also provide a foundational understanding of the mechanisms involved in phytoremediation—the use of plants to mitigate pollution. This study represents a crucial step towards unraveling the genetic complexities of heavy-metal tolerance in plants and may pave the way for future advancements in sustainable environmental remediation strategies.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

植物吸收和耐受重金属的遗传基础的理解仍然有限。本研究旨在探讨夹竹桃（俗称夹竹桃）吸收和耐受环境中重金属的机制。通过分析植物的遗传组成和研究基因的激活和抑制，科学家们试图解开使夹竹桃在污染地区茁壮成长的机制。这项研究具有社会意义，因为它解决了环境问题，如污染及其对生态系统的影响。这项研究的与众不同之处在于其采用转录组学的创新方法，该方法涉及研究基因活性，以深入了解夹竹桃如何应对重金属污染。通过阐明重金属吸收和耐受性的遗传基础，这项研究可能对生态恢复，植物修复（使用植物修复污染场地）和可持续农业实践产生深远的影响。因此，该项目代表了一项重要的科学奋进，可以产生宝贵的知识来应对紧迫的环境挑战。总的来说，这项研究有助于科学认识的进步，为可持续解决方案提供支持，并促进我们的环境和社会的福祉。调节植物重金属吸收和耐受性的遗传机制知之甚少。本研究旨在探索夹竹桃在污染环境中吸收和抵抗重金属的显着能力背后的遗传基础。具体来说，该研究旨在研究夹竹桃如何有效地吸收和耐受镉，铅和锌等重金属而不会产生有害影响。本研究的主要目的是揭示该植物对重金属吸收和耐受的分子途径和基因调控网络。为了实现这些目标，将进行全面的转录组学分析。将对来自遭受重金属胁迫以及对照条件的植物的RNA样品进行测序，从而能够鉴定和定量基因表达模式。通过比较胁迫和非胁迫植物的转录组，将发现与重金属吸收和耐性相关的差异表达基因。该项目将涉及功能富集分析，旨在确定参与植物对重金属胁迫反应的关键转录因子和信号通路。通过整合不同的数据集和采用各种生物学方法，全面了解夹竹桃吸收和耐受重金属的遗传机制。这项研究的结果不仅有助于更广泛的领域的植物胁迫反应，但也提供了一个基本的了解植物修复的机制，利用植物来减轻污染。这项研究代表了一个关键的一步，以解开遗传复杂性的重金属耐受性的植物，并可能铺平道路，为未来的进步，可持续的环境修复strategies.This奖项反映了NSF的法定使命，并已被认为是值得通过评估使用基金会的智力价值和更广泛的影响审查标准的支持。