细胞分裂素在调节小麦和小麦寒冷胁迫反应中的作用

L. Voytenko, M. Shcherbatiuk, V. Vasyuk, I. Kosakivska
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引用次数: 0

摘要

该研究致力于研究冷冻(+4 °C,2 小时)对冬小麦(Triticum aestivum L.)变种 "Podolyanka "14 天胁迫植株和 21 天恢复植株的细胞分裂素平衡的影响。"Podolyanka "和斯佩耳特小麦(Triticum spelta L.)变种 "Frankenkorn "的细胞分裂素稳态。"Frankenkorn"。我们的研究表明,寒冷会诱导植物细胞分裂素的含量和分布发生复杂的变化,这些变化具有物种和器官的特异性。由于反式玉米素-O-葡萄糖苷、反式玉米素、异戊烯基腺嘌呤和异戊烯基腺苷的积累,"Podolyanka "冬小麦根中的细胞分裂素总含量增加了三倍。胁迫没有影响反玉米素核苷在根部的积累,但却使冬小麦品种 "Podolyanka "芽中的反玉米素含量增加了四倍。"Podolyanka"。斯佩耳特小麦 "Frankenkorn "根中细胞分裂素的总含量减少了 1 倍。由于反式玉米素-O-葡萄糖苷和反式玉米素核糖苷含量的下降,"Frankenkorn "小麦根中的细胞分裂素总含量减少了 1.4 倍,而在芽中,由于反式玉米素-O-葡萄糖苷和异戊烯基腺嘌呤含量的减少,细胞分裂素总含量减少了 1.2 倍。在两个 21 天大的物种中,长期暴露在寒冷环境中表现为激素水平的增加。我们的数据揭示了 "Podolyanka "冬小麦和 "Spelt "冬小麦在细胞分裂素平衡方面的共同特征和不同特征。Podolyanka "和斯佩耳特小麦变种 "Frankenkorn "在快速生长过程中细胞分裂素平衡的共同特征。"Frankenkorn "在快速适应期和恢复期的细胞分裂素稳态具有共同的特征,为了解这些品种对寒冷的反应提供了新的视角。
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Role of cytokinins in the regulation the chilling stress response in Triticum aestivum and Triticum spelta
The research is devoted to the study of the effect of chilling (+4 °C, 2 h) on cytokinin homeostasis in 14-day stressed and 21-day restored plants of winter wheat (Triticum aestivum L.) cv. “Podolyanka” and spelt wheat (Triticum spelta L.) cv. “Frankenkorn”. Our study revealed that chilling induces complex changes in the content and distribution of cytokinins in plants that are species- and organ-specifi c. After chilling, the total cytokinin content in the roots of winter wheat cv. “Podolyanka” increased threefold due to the accumulation of trans-zeatin-O-glucoside, trans-zeatin, isopentenyladenine and isopentenyladenosine. Stress did not aff ect trans-zeatin riboside accumulation in roots but induced a fourfold increase in its content in the shoots of winter wheat cv. “Podolyanka”. The total content of cytokinin in the roots of spelt wheat cv. “Frankenkorn” decreased by 1.4 times due to decline in trans-zeatin-O-glucoside and trans-zeatin riboside content, while in shoots, it decreased by 1.2 times owing to reduced trans-zeatin-O-glucoside and isopentenyladenine levels. Prolonged exposure to chilling was manifested by an increase in hormone levels in both 21-day-old species. Our data revealed common and distinct traits in cytokinin homeostasis between winter wheat cv. “Podolyanka” and spelt wheat cv. “Frankenkorn” during rapid adaptation and the recovery period, providing new insights into the response of these species to chilling.
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