L V Kolomeichuk, R P Litvinovskaya, V A Khripach, V V Kuznetsov, M V Efimova
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引用次数: 0
Abstract
Exogenous 24-epibrassinolide (EBL) and a synthetic EBL-based conjugate (2,3,22,23-tetraester of EBL and succinic acid) used at 10 nM were for the first time shown to almost equally mitigate the negative effects of salt stress (150 mM NaCl) on rapeseed plants, sustaining their photosynthetic activity and growth parameters. Specificity was observed in the action of the compounds in regulating the NaCl resistance of rapeseed plants. EBL increased the content of carotenoids and superoxide dismutase and peroxidase activities in plants exposed to chloride salinization, while the EBL conjugate increased peroxidase activity only. Pretreatment of plants for 4 h before stress exposure was more efficient than treatment applied simultaneously with stress.
外源24-表油菜素内酯（EBL）和基于EBL的合成缀合物（EBL和琥珀酸的2,3,22,23-四酯）在10 nM下施用，首次显示出几乎相同的减轻盐胁迫（150 mM NaCl）对油菜植株的负面影响，维持其光合活性和生长参数。这些化合物对油菜籽耐盐性的调节具有特异性。EBL提高了植物类胡萝卜素含量、超氧化物歧化酶和过氧化物酶活性，而EBL偶联物仅提高过氧化物酶活性。胁迫前预处理4 h比胁迫同时处理更有效。
期刊介绍：
Doklady Biological Sciences is a journal that publishes new research in biological sciences of great significance. Initially the journal was a forum of the Russian Academy of Science and published only best contributions from Russia in the form of short articles. Now the journal welcomes submissions from any country in the English or Russian language. Every manuscript must be recommended by Russian or foreign members of the Russian Academy of Sciences.
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