Effects of H_2O_2 and NO on Flower Development and AP1 Gene Expression of Off-season Longan

作     者：Songgang LI Xinjun ZHANG Lei ZHANG Jiwang HONG Yeyuan CHEN 

作者机构：Tropical Crops Genetic Resources InstituteChinese Academy of Tropical Agricultural Sciences/Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern ChinaMinistry of Agriculture/National Cultivar Improvement Center of Tropical Fruit TreeDanzhou 571737China Henan Vocational College of AgricultureZhengzhou 451400China 

出 版 物：《Agricultural Biotechnology》 (农业生物技术（英文版）)

年 卷 期：2016年第5卷第4期

页      面：23-25,30页

学科分类：09[农学] 0902[农学-园艺学] 090201[农学-果树学] 

基　　金：Supported by China Agriculture Research System(CARS-33-25) 

主　　题：Longan Flower development Hydrogen peroxide (H2O2) Nitric oxide (NO) API gene 

摘      要：[Objective] This study aimed to investigate the effects of H2O2 and NO on flower development and 4P1 gene expression of off-season longan. [Meth-od ]Nine-year-old off-season Chuliang longan was sprayed with enhancers and blockers of H2O2 and NO to analyze dynamic changes of flower development and API expression. [ Result] The expression level of API gene in off-season longan was improved during flower development. SNP and MV treatments up-regulated the expression level of API gene in leaves and terminal buds to varying degrees during lateral primordium formation. Especially, SNP treatment exhibited the most remark-able effect. DMTU treatment significantly inhibited the expression of AP1 gene in leaves and terminal buds during lateral primordium formation. L-NNA treatment slightly inhibited the expression of API gene in leaves and exerted no significant effect on expression of AP1 gene in terminal buds. [ Conclusion] It can be specu-lated that the enhancement of NO and H2O2 signals is conducive to flower development of off-season longan, while blocking H2O2 signals may inhibit flower develop-ment of off-season longan.