ISSN:
1399-3054
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1034/j.1399-3054.2003.1170116.x
Permalink