嗜线虫沙雷氏菌Serratia nematodiphila TG10增强油菜耐盐碱能力
油菜具有较强的耐盐碱能力,本研究从天津盐碱土中分离得到一株嗜线虫沙雷氏菌Serratia nematodiphila TG10,它不仅能够在8％NaCl和pH 10.15的R2A培养基上生长,还能定殖在油菜根系和根内.在盐胁迫条件下,TG10菌株处理后可以促进拟南芥和油菜生长.含盐1.2％基质土和哈尔滨盐碱土盆栽试验中,TG10处理后可以促进油菜鲜重和干重的增加,Na+含量显著下降,K+与Na+的含量比值增加;同样在天津盐碱土和吉林盐碱土盆栽试验中,TG10处理后均可显著增加油菜鲜重、叶绿素和脯氨酸的含量.吉林盐碱土盆栽油菜的转录组数据表明,TG10菌株处理后细胞色素P450代谢通路、硫代葡萄...
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| Published in | 作物学报 Vol. 51; no. 2; pp. 358 - 369 |
|---|---|
| Main Authors | , , , , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
湖北洪山实验室,湖北武汉 430070%华中农业大学植物科学技术学院/农业微生物资源发掘与利用全国重点实验室,湖北武汉 430070
12.02.2025
华中农业大学植物科学技术学院/农业微生物资源发掘与利用全国重点实验室,湖北武汉 430070 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 0496-3490 |
| DOI | 10.3724/SP.J.1006.2025.44091 |
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| Abstract | 油菜具有较强的耐盐碱能力,本研究从天津盐碱土中分离得到一株嗜线虫沙雷氏菌Serratia nematodiphila TG10,它不仅能够在8％NaCl和pH 10.15的R2A培养基上生长,还能定殖在油菜根系和根内.在盐胁迫条件下,TG10菌株处理后可以促进拟南芥和油菜生长.含盐1.2％基质土和哈尔滨盐碱土盆栽试验中,TG10处理后可以促进油菜鲜重和干重的增加,Na+含量显著下降,K+与Na+的含量比值增加;同样在天津盐碱土和吉林盐碱土盆栽试验中,TG10处理后均可显著增加油菜鲜重、叶绿素和脯氨酸的含量.吉林盐碱土盆栽油菜的转录组数据表明,TG10菌株处理后细胞色素P450代谢通路、硫代葡萄糖硫苷生物通路等显著富集,一些抗逆相关的基因显著上调表达.另外,TG10菌株能抑制油菜病原菌的生长,诱导油菜抗菌核病和灰霉病.本研究结果表明,嗜线虫沙雷氏菌S.nematodiphila TG10能增强油菜在不同类型盐碱土中的耐盐能力,为盐碱地的生物修复提供微生物菌种资源和理论支撑. |
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| AbstractList | 油菜具有较强的耐盐碱能力,本研究从天津盐碱土中分离得到一株嗜线虫沙雷氏菌Serratia nematodiphila TG10,它不仅能够在8％NaCl和pH 10.15的R2A培养基上生长,还能定殖在油菜根系和根内.在盐胁迫条件下,TG10菌株处理后可以促进拟南芥和油菜生长.含盐1.2％基质土和哈尔滨盐碱土盆栽试验中,TG10处理后可以促进油菜鲜重和干重的增加,Na+含量显著下降,K+与Na+的含量比值增加;同样在天津盐碱土和吉林盐碱土盆栽试验中,TG10处理后均可显著增加油菜鲜重、叶绿素和脯氨酸的含量.吉林盐碱土盆栽油菜的转录组数据表明,TG10菌株处理后细胞色素P450代谢通路、硫代葡萄糖硫苷生物通路等显著富集,一些抗逆相关的基因显著上调表达.另外,TG10菌株能抑制油菜病原菌的生长,诱导油菜抗菌核病和灰霉病.本研究结果表明,嗜线虫沙雷氏菌S.nematodiphila TG10能增强油菜在不同类型盐碱土中的耐盐能力,为盐碱地的生物修复提供微生物菌种资源和理论支撑. |
| Abstract_FL | Rapeseed exhibits strong resistance to salt-alkali stress.In this study,a strain of Serratia nematodiphila TG10 was iso-lated from saline-alkali soil in Tianjin.This strain can not only grow on a 6％NaCl R2A medium plate with a pH of 10.15 but can also colonize the roots and rhizosphere of rapeseed.Under salt stress,the TG10 strain promoted the growth of both Arabidopsis and rapeseed.In pot experiments using a 1.2％salt-containing matrix soil and saline-alkali soil from Harbin,TG10 treatment en-hanced the fresh and dry weights of rapeseed,reduced Na+content,and increased the K+/Na+ratio.In experiments with sa-line-alkali soils from Tianjin and Jilin,TG10 treatment significantly increased the fresh weight,chlorophyll content,and proline levels in rapeseed.Transcriptome analysis of rapeseed grown in Jilin saline-alkali soil revealed that the cytochrome P450 meta-bolic pathway and glucosinolate biosynthesis pathway were significantly enriched following TG10 treatment,with significant upregulation of several stress-related genes.Additionally,the TG10 strain inhibited the growth of pathogenic bacteria in rapeseed and induced resistance against Sclerotinia sclerotiorum and Botrytis cinerea.These findings suggest that S.nematodiphila TG10 can enhance the salt tolerance of rapeseed in various types of saline-alkali soils,providing a valuable resource and theoretical foundation for the biorefining of microorganisms in saline-alkali environments. |
| Author | 孙小钊 付艳苹 程家森 谢甲涛 苏晴芳 陈桃 姜道宏 林杨 |
| AuthorAffiliation | 华中农业大学植物科学技术学院/农业微生物资源发掘与利用全国重点实验室,湖北武汉 430070;湖北洪山实验室,湖北武汉 430070%华中农业大学植物科学技术学院/农业微生物资源发掘与利用全国重点实验室,湖北武汉 430070 |
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| Author_FL | JIANG Dao-Hong SU Qing-Fang SUN Xiao-Zhao CHENG Jia-Sen LIN Yang XIE Jia-Tao CHEN Tao FU Yan-Ping |
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| DOI | 10.3724/SP.J.1006.2025.44091 |
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| Keywords | Serratia nematodiphila saline-alkali resistance mechanism 盐碱土 rapeseed induced resistance 嗜线虫沙雷氏菌 诱导抗性 saline-alkali soil 耐盐碱机制 油菜 |
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| Title | 嗜线虫沙雷氏菌Serratia nematodiphila TG10增强油菜耐盐碱能力 |
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