Depression of enzyme activities and gene expression of ACC synthase and ACC oxidase in cut carnation flowers under high-temperature conditions

被引：15
|
作者：
Yangkhamman, Pranom
Tanase, Koji
Ichimura, Kazuo
Fukai, Seiichi [1 ]
机构：
[1] Kagawa Univ, Fac Agr, Kagawa 7610795, Japan
[2] Ehime Univ, United Grad Sch, Matsuyama, Ehime 7908566, Japan
[3] Natl Inst Floricultural Sci, Tsukuba, Ibaraki 3058519, Japan
来源：
PLANT GROWTH REGULATION | 2007年 / 53卷 / 03期
关键词：
carnation; ethylene; high temperature; ACC synthase; ACC oxidase;
D O I：
10.1007/s10725-007-9213-z
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
High-temperature depression of ethylene production in cut carnation flowers cv. 'Excerea' can occur because of inhibition of ACC synthase (ACS) and ACC oxidase (ACO) activities in flowers. Large differences were apparent between ACS activity in petals at 24 degrees C and 32 degrees C. These ACC-accumulation-related activities were markedly decreased in petals at 32 degrees C, indicating that a low ACS activity and ACC accumulation in petals are a factor of ethylene biosynthesis inhibition under high-temperature conditions. In addition, the respective expressions of DC-ACO1 and DC-ACS1 were low in both gynoecia and petals of flowers kept at 32 degrees C. Results indicate that low ACS and ACO activities under high-temperature conditions were transcriptionally regulated.
引用
收藏
页码：155 / 162
页数：8
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