H2O2和NO对反季节龙眼成花及AP1基因表达的影响
South China Fruits（2016）
Abstract
为阐明H2O2和NO对龙眼成花及AP1基因表达的影响,选用9年生反季节储良龙眼结合H2O2和NO促进剂及信号阻断剂喷施,分析成花及AP1基因表达量的动态变化.结果表明,反季节龙眼AP1基因在成花过程中表达量上升,而SNP和MV处理均不同程度上调了侧花原基形成时顶芽和叶片中AP1基因的表达,尤以SNP处理效果最为显著;DMTU处理显著抑制了侧花原基形成时顶芽和叶片中AP1基因的表达,L-NNA处理对侧花原基形成时叶片AP1基因表达有轻微的抑制作用,对顶芽AP1基因表达影响不大.结合龙眼成花情况,推断加强NO、H2O2信号有助于促进龙眼成花,而阻断H2O2信号将抑制龙眼成花.
MoreKey words
longan,flower bud formation,hydrogen peroxide (H2O2),nitric oxide (NO),AP1 gene
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