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首页> 外文期刊>International Journal of Vegetable Science >Comparison of the Influence of 28-Homobrassinolide and 24-Epibrassinolide on Nitrate Reductase Activity, Proline Content, and Antioxidative Enzymes of Tomato
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Comparison of the Influence of 28-Homobrassinolide and 24-Epibrassinolide on Nitrate Reductase Activity, Proline Content, and Antioxidative Enzymes of Tomato

机译：比较28-高油菜素内酯和24-表油菜素内酯对番茄硝酸还原酶活性，脯氨酸含量和抗氧化酶的影响

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摘要

Brassinosteroids (BRs) are a class of polyhydroxysteroid plant hormones. The sensitivity of a crop to abiotic/biotic stress is a functional aspect of its response as regulated by the efficient internal buildup of hormones like BRs. A better understanding of how the brassinosteroid isomers differentially affect plant responses in tomato (Solanum lycopersicum L.) is necessary to improve production. Plants of cv. K-21 were grown in a net house and foliage was treated with brassinosteroid isomers 28-homobrassinolide (HBL) and 24-epibrassinolide (EBL) at concentrations of 10−6, 10−8, or 10−10 M. Plants responded more to EBL than to HBL. All treatments increased nitrate reductase activity and the antioxidant system with respect to the control. However, the 10−8 M concentration of EBL produced higher nitrate reductase activity and better stimulated the antioxidant system in tomato. In physiological experiments, different concentrations/modes of stress/hormone(s) were tested and justified in biosynthetic or signaling mutants to fix the resistant response in transgenically tailored crops. Physiological studies are an integral part of systematic studies of crop improvement and can provide the basis for molecular experiments.View full textDownload full textKeywords Solanum lycopersicum , Proline, Antioxidant enzymes, BrassinosteroidsRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/19315260.2011.593614
机译：油菜素类固醇（BRs）是一类多羟基类固醇植物激素。作物对非生物/生物胁迫的敏感性是其响应的一个功能方面，这受激素（如BRs）的有效内部积累调节。为了提高产量，必须更好地了解油菜素甾体异构体如何差异影响番茄（Solanum lycopersicum L.）的植物反应。简历植物K-21在网棚中生长，并用油菜素甾体异构体28-高油菜素内酯（HBL）和24-表油菜素内酯（EBL）处理浓度为10 6 ，10 â M’8 或10 →10 M。植物对EBL的反应比对HBL的反应大。相对于对照，所有处理均增加了硝酸还原酶活性和抗氧化剂系统。然而，浓度为10 -8> sBL的EBL产生更高的硝酸盐还原酶活性，并更好地刺激了番茄的抗氧化系统。在生理学实验中，测试了不同浓度/模式的胁迫/激素，并在生物合成或信号突变体中证明了其合理性，以固定转基因作物中的抗性响应。生理研究是作物改良系统研究不可或缺的一部分，可以为分子实验提供基础。 “ citeulike，netvibes，twitter，technorati，美味，linkedin，facebook，stumbleupon，digg，google，更多”，pubid：“ ra-4dff56cd6bb1830b”};添加到候选列表链接永久链接http://dx.doi.org/10.1080/19315260.2011.593614

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