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首页> 外文期刊>Botany >Effects of ACC deaminase containing rhizobacteria on plant growth and expression of Toc GTPases in tomato (Solanum lycopersicum) under salt stress
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Effects of ACC deaminase containing rhizobacteria on plant growth and expression of Toc GTPases in tomato (Solanum lycopersicum) under salt stress

机译：盐胁迫下含根际细菌的ACC脱氨酶对番茄生长的影响及Toc GTPases的表达。

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摘要

The bacterial enzyme 1-aminocyclopropane-1-carboxylate (ACC) deaminase plays a key role in lowering plant stress ethylene levels, thereby stimulating plant growth. The present study aims to evaluate whether the ACC deaminase producing plant growth promoting rhizobacterium (PGPR) Pseudomonas putida UW4 can maintain and promote plant growth in saline environments and modulate the expression of chloroplast import apparatus genes in salt-treated tomato plants (Solanum lycopersicum L.). Tomatoes were grown in the presence and absence of the PGPR and shoot length, fresh and dry mass, and chlorophyll concentration were measured after 6 weeks. The expression levels of the Toc GTPases of the chloroplast protein import apparatus were measured using quantitative real-time PCR. The results showed that the rhizobacteria significantly increased shoot length, shoot fresh and dry mass, and the chlorophyll concentration of tomato seedlings grown in the presence of up to 90 mmol.L-1 NaCl. Analysis showed that the expression of most of the Toc GTPase genes was upregulated in tomato seedlings after 6 weeks of exposure to NaCl, which may help facilitate the import into chloroplasts of proteins that are involved in the stress response.
机译：细菌酶1-氨基环丙烷-1-羧酸酯（ACC）脱氨酶在降低植物逆境乙烯的含量方面具有关键作用，从而刺激植物的生长。本研究旨在评估产生ACC脱氨酶的植物促生长根瘤菌（PGPR）恶臭假单胞菌UW4是否可以在盐环境中维持和促进植物生长以及调节盐处理番茄植株（Solanum lycopersicum L. ）。在有和无PGPR的情况下种植西红柿，并在6周后测量茎长，新鲜和干燥质量以及叶绿素浓度。使用定量实时PCR测量叶绿体蛋白导入设备的Toc GTPases的表达水平。结果表明，在不超过90 mmol.L-1 NaCl的条件下，番茄幼苗的根际细菌的根茎长度，新鲜和干燥质量显着增加，叶绿素浓度显着增加。分析表明，暴露于NaCl 6周后，大多数Toc GTPase基因的表达在番茄幼苗中上调，这可能有助于促进与胁迫反应有关的蛋白质向叶绿体的导入。

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