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转录组变化揭示了腐殖酸诱导拟南芥耐盐胁迫的分子机制。

Transcriptome Changes Reveal the Molecular Mechanisms of Humic Acid-Induced Salt Stress Tolerance in Arabidopsis.

机构信息

Division of Applied Life Science (BK21four), Plant Molecular Biology and Biotechnology Research Center, Research Institute of Life Sciences, Gyeongsang National University, Jinju 52828, Korea.

Genomics Division, National Institute of Agricultural Sciences, Rural Development Administration, Jeonju 54874, Korea.

出版信息

Molecules. 2021 Feb 3;26(4):782. doi: 10.3390/molecules26040782.

DOI:10.3390/molecules26040782
PMID:33546346
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7913487/
Abstract

Humic acid (HA) is a principal component of humic substances, which make up the complex organic matter that broadly exists in soil environments. HA promotes plant development as well as stress tolerance, however the precise molecular mechanism for these is little known. Here we conducted transcriptome analysis to elucidate the molecular mechanisms by which HA enhances salt stress tolerance. Gene Ontology Enrichment Analysis pointed to the involvement of diverse abiotic stress-related genes encoding HEAT-SHOCK PROTEINs and redox proteins, which were up-regulated by HA regardless of salt stress. Genes related to biotic stress and secondary metabolic process were mainly down-regulated by HA. In addition, HA up-regulated genes encoding transcription factors (TFs) involved in plant development as well as abiotic stress tolerance, and down-regulated TF genes involved in secondary metabolic processes. Our transcriptome information provided here provides molecular evidences and improves our understanding of how HA confers tolerance to salinity stress in plants.

摘要

腐殖酸（HA）是腐殖质的主要成分，腐殖质广泛存在于土壤环境中，构成复杂的有机物。HA 能促进植物发育和提高耐受力，但具体的分子机制还知之甚少。在这里，我们进行了转录组分析，以阐明 HA 增强耐盐胁迫的分子机制。GO 富集分析表明，HA 上调了与多种非生物胁迫相关的基因，这些基因编码热休克蛋白和氧化还原蛋白，而与盐胁迫无关。与生物胁迫和次生代谢过程相关的基因主要受 HA 下调。此外，HA 还上调了参与植物发育和非生物胁迫耐受的转录因子（TF）基因，并下调了参与次生代谢过程的 TF 基因。我们提供的转录组信息为 HA 如何赋予植物耐盐性提供了分子证据，并加深了我们对这一过程的理解。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ed8/7913487/e567301e6cf1/molecules-26-00782-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ed8/7913487/59492a85dc7f/molecules-26-00782-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ed8/7913487/21afd1c5cdd7/molecules-26-00782-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ed8/7913487/dd3b61fb6f5a/molecules-26-00782-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ed8/7913487/3ad97984f9a3/molecules-26-00782-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ed8/7913487/a862d4b34e09/molecules-26-00782-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ed8/7913487/e567301e6cf1/molecules-26-00782-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ed8/7913487/59492a85dc7f/molecules-26-00782-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ed8/7913487/21afd1c5cdd7/molecules-26-00782-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ed8/7913487/dd3b61fb6f5a/molecules-26-00782-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ed8/7913487/3ad97984f9a3/molecules-26-00782-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ed8/7913487/a862d4b34e09/molecules-26-00782-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ed8/7913487/e567301e6cf1/molecules-26-00782-g006.jpg

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