Effects of Ethylene and 1-MCP Treatments on the Expressions of CTR Genes of Tree Peony
Effects of Ethylene and 1-MCP Treatments on the Expressions of CTR Genes of Tree Peony
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发表时间：
2011
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通讯作者：
D. Li
中科院分区：
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作者：
D. Li
Using ethylene and 1-MCP treatment on the cut flowers of tree peony(Paeonia suffruticosa) 'Luoyanghong' at stage 1,the effect of ethylene and 1-MCP on the expressions of CTR genes of 'Luoyanghong' in opening and the senescence process were studied by RT-PCR.The results showed that during the flower opening and senescence processes,PsCTR1 and PsCTR2 were accumulated in a constitutive manner,while PsCTR3 was increased with increasing endogenous ethylene production.The expressions of both PsCTR2 and PsCTR3 were increased in response to exogenous ethylene.1-MCP up-regulated the expressions of PsCTR1 and PsCTR2.The results from the competitive treatment between ethylene and 1-MCP showed that the 1-MCP treatment could reverse the effect of ethylene in PsCTR1 and PsCTR2,but had nothing to do with PsCTR3,by contrast,the ethylene treatment could reverse the effect of 1-MCP in PsCTR1,PsCTR2 and PsCTR3 only when the flowers arrived full opening or senescing stage.
