Abstract
In the higher plants, the nuclear genome encodes many proteins that are involved in the constitution of the chloroplast. A few genes such as ARC, FtsZ have been reported to be involved in the division of the chloroplast. Many other genes should be required to completely explain chloroplast development.
An Arabidopsis thaliana mutant line, 5-45, isolated from the EMS mutagenised population contained chloroplasts abnormal in both size and morphology. Sizes were not uniform, ranging from about one-fifth to several times that of wild type chloroplasts. Some were not round and some looked like buddings of yeast.
The mutation was mapped to the top arm of chromosome 5(8116kb~8118kb). The 5-45 failed to complement arc11, indicating that 5-45 is a new allele of arc11 regarding abnormality of chloroplast division.
We present the identification of the mutation of both 5-45 and arc11.
