The star-type color pattern in Petunia hybrida 'Red star' flowers is induced by sequence-specific degradation of chalcone synthase RNA

被引：124
作者：
Koseki, M [1 ]
Goto, K [1 ]
Masuta, C [1 ]
Kanazawa, A [1 ]
机构：
[1] Hokkaido Univ, Grad Sch Agr, Kita Ku, Sapporo, Hokkaido 0608589, Japan
来源：
PLANT AND CELL PHYSIOLOGY | 2005年 / 46卷 / 11期
关键词：
chalcone synthase; cucumber mosaic virus; Petunia hybrida; post-transcriptional gene silencing; RNA silencing; short interfering RNA;
D O I：
10.1093/pcp/pci192
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Petunia hybrida 'Red Star' is a variety whose flowers exhibit a star-type red and white bicolor pattern. We analyzed the mRNA levels of six genes involved in anthocyanin biosynthesis. Only the level of chalcone synthase (CHS) mRNA was depressed in the unpigmented flower sectors. Both transcriptional activity and the accumulation of short interfering RNA of CHS in the unpigmented sectors were detected. Viral infection blocked the generation of CHS-silenced sectors. These results indicate that sequence-specific degradation of CHS RNA is the primary cause of the formation of white sectors in 'Red Star' flowers.
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收藏
页码：1879 / 1883
页数：5
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