精品文档---下载后可任意编辑DNA 甲基化对小麦盐胁迫应答基因的影响讨论中期报告摘要：盐胁迫是影响小麦生长和产量的主要因素之一。越来越多的讨论表明，DNA 甲基化在植物对盐胁迫的响应中发挥了重要作用。本讨论旨在探究 DNA 甲基化对小麦盐胁迫应答基因的影响，为小麦盐胁迫的遗传调控机制提供新的理论基础。通过对小麦进行盐胁迫处理和非胁迫处理，使用双向选择性 PCR 技术筛选和鉴定不同甲基化程度的 DNA 片段，并利用高通量测序技术对甲基化程度高低不同的 DNA 片段进行测序和分析。初步结果表明，在盐胁迫条件下，小麦 DNA 甲基化水平发生了显著变化，部分基因的甲基化程度明显增加。进一步分析发现，这些基因主要涉及生物合成、信号转导、抗氧化等生物学过程，这些过程都是植物响应盐胁迫的关键途径。本讨论还将对甲基化程度变化显著的基因进行进一步讨论和验证，以确定它们在小麦抗盐胁迫中的具体作用和调控机制。关键词：小麦；盐胁迫；DNA 甲基化；基因表达Abstract：Salt stress is one of the main factors affecting wheat growth and yield. Increasing evidence indicates that DNA methylation plays an important role in plant response to salt stress. This study aims to explore the effect of DNA methylation on wheat salt stress response genes, providing a new theoretical basis for the genetic regulation mechanism of wheat salt stress.Wheat was subjected to salt stress and non-stress treatments, and differentially methylated DNA fragments were screened and identified using bisulfite PCR sequencing technology. High-throughput sequencing technology was used to sequence and analyze DNA fragments with different methylation levels. Preliminary results showed that under salt stress conditions, the DNA methylation level of wheat changed significantly, and the methylation level of some genes increased significantly. Further analysis showed that these genes were mainly involved in biological synthesis, signal 精品文档---下载后可任意编辑transduction, antioxidant and other biological processes, which are key pathways for plant response to salt stress.This study will further study and verify the genes with significant changes in methylation level to determine their specific roles and regulatory mechanisms in wheat resistance to salt stress.Keywords: Wheat; salt stress; DNA methylation; gene expression.
