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茄子（Solanum melongena L.）WRKY 转录因子 40 调节脱落酸和盐胁迫反应。

WRKY transcription factor 40 from eggplant (Solanum melongena L.) regulates ABA and salt stress responses.

机构信息

Shanghai Key Laboratory of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China.

College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China.

出版信息

Sci Rep. 2024 Aug 20;14(1):19289. doi: 10.1038/s41598-024-69670-3.

DOI:10.1038/s41598-024-69670-3
PMID:39164381
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11335892/
Abstract

Plants are affected by many environmental factors during their various stages of growth, among which salt stress is a key factor. WRKY transcription factors play important roles in the response to stress in plants. In this study, SmWRKY40 from eggplant (Solanum melongena L.) was found to belong to the subfamily of WRKY transcription factor group II, closely related to the evolution of wild tomato ScWRKY40 (Solanum chilense). The expression of SmWRKY40 could be induced by several abiotic stresses (drought, salt, and high temperature) and ABA to different degrees, with salt stress being the most significant. In Arabidopsis thaliana, the seed germination rate of SmWRKY40 overexpression seedlings was significantly higher than those of the wild type under high concentrations of NaCl and ABA, and root elongation of overexpression lines was also longer than wild type under NaCl treatments. SmWRKY40 overexpression lines were found to enhance Arabidopsis tolerance to salt with lower ROS, MDA, higher soluble protein, proline accumulation, and more active antioxidant enzymes. The expression level of genes related to stress and ABA signaling displayed significant differences in SmWRKY40 overexpression line than that of WT. These results indicate that SmWRKY40 regulates ABA and salt stress responses in Arabidopsis.

摘要

在生长的各个阶段，植物受到许多环境因素的影响，其中盐胁迫是一个关键因素。WRKY 转录因子在植物应对胁迫中发挥着重要作用。本研究发现，茄子（Solanum melongena L.）中的 SmWRKY40 属于 WRKY 转录因子 II 亚家族，与野生番茄 ScWRKY40（Solanum chilense）的进化密切相关。SmWRKY40 的表达可被多种非生物胁迫（干旱、盐和高温）和 ABA 不同程度地诱导，其中盐胁迫最为显著。在拟南芥中，SmWRKY40 过表达幼苗的种子发芽率在高浓度 NaCl 和 ABA 下显著高于野生型，而在 NaCl 处理下，过表达系的根伸长也长于野生型。发现 SmWRKY40 过表达系增强了拟南芥对盐的耐受性，ROS、MDA 水平较低，可溶性蛋白、脯氨酸积累量较高，抗氧化酶活性更高。SmWRKY40 过表达系中与胁迫和 ABA 信号相关的基因表达水平与 WT 相比有显著差异。这些结果表明 SmWRKY40 调节拟南芥中的 ABA 和盐胁迫反应。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae09/11335892/ea6d7d3577cc/41598_2024_69670_Fig11_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae09/11335892/122346e99d3d/41598_2024_69670_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae09/11335892/ea6d7d3577cc/41598_2024_69670_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae09/11335892/6c0d30feacab/41598_2024_69670_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae09/11335892/ad36930beba3/41598_2024_69670_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae09/11335892/8a6d9fdfdcbb/41598_2024_69670_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae09/11335892/6809c27c402b/41598_2024_69670_Fig4a_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae09/11335892/0f6445134a10/41598_2024_69670_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae09/11335892/dd1d4c0e8f3c/41598_2024_69670_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae09/11335892/a9fb47186b4d/41598_2024_69670_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae09/11335892/eadfd4d699f8/41598_2024_69670_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae09/11335892/d29b4d85a219/41598_2024_69670_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae09/11335892/122346e99d3d/41598_2024_69670_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ae09/11335892/ea6d7d3577cc/41598_2024_69670_Fig11_HTML.jpg

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