The Effect of Exogenous Phytohormones on Resistance of Wheat Calluses to <i>Tilletia caries</i>(D.C.) Tul. &C. Tul.

• 作者: Igor V. Maksimov Liubov G. Yarullina Olga B. Surina
• 来源期刊: 美国植物学期刊(英文)
• 学科: 农学
• 关键词: WHEAT Calluses Tilletia CARIES Indole-3-Acetic ACID (IAA) Abscisic ACID (ABA) CYTOKININS Defense Oxalate Oxidase
• 年，卷（期）: 2014,（12）
• 页码范围: 1745-1754
• 页数: 10页
• 分类号: S5

摘要

The influence of exogenic hormones (indole-3-acetic acid (IAA), abscisic acid (ABA) and kinetin) on defense reaction of wheat (Triticum aestivum L.) calli to the bunt agent Tilletia caries (D.C.) Tul. & C. Tul. was studied. ABA and kinetin induced the oxalate oxidase activity, increased the Н2О2 level, decreased germination of fungi teliospores and induced on calli the occurrence of dense sites non-infected by pathogen. On the contrary, IAA led to the decrease of oxalate oxidase activity, loosening of calli and increase germination of bunt agent teliospores and growth of fungi mycelium, besides stimulated rhizoids formation of wheat calli. Probably, the accumulation of Н2О2 in wheat calli under the influence of kinetin and ABA connected with activity of oxalate oxidase is one of the factors increasing defense reaction of wheat to bunt agent.