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谷子转录因子的表达增强了. 的耐旱性。

Expression of Foxtail Millet Transcription Factor Enhances Drought Tolerance in .

机构信息

Grassland Agri-Husbandry Research Center, College of Grassland Science, Qingdao Agricultural University, Qingdao 266109, China.

Key Laboratory of National Forestry and Grassland Administration on Grassland Resources and Ecology in the Yellow River Delta, Qingdao Agricultural University, Qingdao 266109, China.

出版信息

Biomolecules. 2024 Aug 7;14(8):958. doi: 10.3390/biom14080958.

DOI:10.3390/biom14080958
PMID:39199345
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11352937/
Abstract

Foxtail millet is a drought-tolerant cereal and forage crop. The basic leucine zipper () gene family plays important roles in regulating plant development and responding to stresses. However, the roles of genes in foxtail millet remain largely uninvestigated. In this study, 92 members of the transcription factors were identified in foxtail millet and clustered into ten clades. The expression levels of four genes (, , , and ) were significantly induced after PEG treatment, and was chosen for further analysis. The studies showed that ectopic overexpression of in enhanced the plant drought tolerance. Detached leaves of overexpressing plants had lower leaf water loss rates than those of wild-type plants. overexpressing plants improved survival rates under drought conditions compared to wild-type plants. Additionally, overexpressing in plants displayed reduced malondialdehyde (MDA) levels and enhanced activities of antioxidant enzymes, including catalase (CAT), superoxide dismutase (SOD), and peroxidase (POD) under drought stress. Furthermore, the drought-related genes, such as , , , , , and , were found to be regulated in transgenic plants than in wild-type under drought conditions. These data suggested that conferred drought tolerance in transgenic by regulating antioxidant enzyme activities and the expression of stress-related genes. The study reveals that plays a beneficial role in drought response in plants, offering a valuable genetic resource for agricultural improvement in arid environments.

摘要

黍是一种耐旱的谷类和饲料作物。基本亮氨酸拉链（bZIP）转录因子家族在调节植物发育和响应胁迫方面起着重要作用。然而，黍中的 bZIP 基因的作用在很大程度上仍未得到研究。在这项研究中，鉴定了黍中的 92 个 bZIP 转录因子，并将其聚类为十个分支。在 PEG 处理后，四个 bZIP 基因（、、、和）的表达水平显著诱导，选择 进行进一步分析。研究表明，在 中异位过表达 增强了植物的耐旱性。与野生型植物相比，过表达植物的离体叶片的叶片水分损失率较低。与野生型植物相比，过表达 植物在干旱条件下的存活率提高。此外，在干旱胁迫下，过表达 植物的丙二醛（MDA）水平降低，抗氧化酶活性增强，包括过氧化氢酶（CAT）、超氧化物歧化酶（SOD）和过氧化物酶（POD）。此外，发现干旱相关基因，如、、、、、和，在干旱条件下，过表达植物中的表达水平高于野生型植物。这些数据表明，通过调节抗氧化酶活性和应激相关基因的表达，在转基因 中赋予了耐旱性。该研究表明，在植物的抗旱响应中， 发挥了有益的作用，为干旱环境下的农业改良提供了有价值的遗传资源。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/948f/11352937/9f2b4bc12dd8/biomolecules-14-00958-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/948f/11352937/1536f8b209de/biomolecules-14-00958-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/948f/11352937/a0fb3212d646/biomolecules-14-00958-g002a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/948f/11352937/78f60a1a51f2/biomolecules-14-00958-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/948f/11352937/56a1221bb3c6/biomolecules-14-00958-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/948f/11352937/956328da95c9/biomolecules-14-00958-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/948f/11352937/e87d4465af2b/biomolecules-14-00958-g006a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/948f/11352937/26394a490332/biomolecules-14-00958-g007a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/948f/11352937/9f2b4bc12dd8/biomolecules-14-00958-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/948f/11352937/1536f8b209de/biomolecules-14-00958-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/948f/11352937/a0fb3212d646/biomolecules-14-00958-g002a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/948f/11352937/78f60a1a51f2/biomolecules-14-00958-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/948f/11352937/56a1221bb3c6/biomolecules-14-00958-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/948f/11352937/956328da95c9/biomolecules-14-00958-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/948f/11352937/e87d4465af2b/biomolecules-14-00958-g006a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/948f/11352937/26394a490332/biomolecules-14-00958-g007a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/948f/11352937/9f2b4bc12dd8/biomolecules-14-00958-g008.jpg

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