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- Title
CND41, a chloroplast nucleoid protein that regulates plastid development, causes reduced gibberellin content and dwarfism in tobacco.
- Authors
Takeshi Nakano; Noriko Nagata; Takuma Kimura; Masayo Sekimoto; Hiroshi Kawaide; Shinya Murakami; Yasuko Kaneko; Hisashi Matsushima; Yuji Kamiya; Fumihiko Sato; Shigeo Yoshida
- Abstract
CND41, a DNA binding protein of chloroplast nucleoids, may function as a negative regulator of chloroplast gene expression. The reduction of CND41 in an antisense transformant accelerated plastid development in shoot apex cells and early young leaves, and caused a dwarf phenotype and altered leaf morphology. Plant height and leaf shape could be restored almost to those of the wild type by application of gibberellins (GAs), clearly indicating that a reduction in GA content was a prime cause of the dwarf phenotype in CND41 antisense transformants. The transformants had reduced endogenous levels of active gibberellin (GA1), a biologically active GA, compared to those of wild-type plants. Possible relationships between chloroplast development affected by CND41 function and GA biosynthesis are discussed.
- Publication
Physiologia Plantarum, 2003, Vol 117, Issue 1, p130
- ISSN
0031-9317
- Publication type
Article
- DOI
10.1034/j.1399-3054.2003.1170116.x