Difference between revisions of "Os03g0563300"
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==Annotated Information== | ==Annotated Information== | ||
===Function=== | ===Function=== | ||
| − | + | * '''''Chl9''''' genes encode the OsChlI subunits of Mg-chelatase that play an important role in chloroplast development as a modulator of MgProto. | |
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===Mutation=== | ===Mutation=== | ||
Revision as of 10:19, 5 August 2016
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Contents
Annotated Information
Function
- Chl9 genes encode the OsChlI subunits of Mg-chelatase that play an important role in chloroplast development as a modulator of MgProto.
Mutation
- chl9 mutants exhibit a yellowish-green leaf phenotype under normal growth conditions (Fig. 1B). Abnormal leaf color is first observed on the leaves of 2- to 3-week-old seedlings. And the chl9 mutant exhibits its distinctive phenotype throughout development. In addition, the chl1 and chl9 mutants are viable. To characterize the chlorina phenotypes of chl9 mutants, the researchers first measured their total chlorophyll contents, and found them to be approximately 34% of wild-type Chl levels (Fig. 1D), indicating that the chlorina phenotype results from reduced chlorophyll levels. Underdeveloped thylakoid membranes, poor granum structures and non-dispersed prolamellar bodies were observed in the chloroplasts of chl9 mutant leaves (Fig. 2C, F).
Fig. 1 Characterization of the chl9 mutants. [1].
Fig. 2 Electron microscopic analysis of wild-type and chl9 mutants. [1].
- The
MgProto(ME) content of chl9 leaves was lower than 31% of its wild-type indica cultivar, IR36 (Fig. 3). These results verify that the missense mutations in ChlI of chl9 result in the reduction of Mg-chelatase activity and thereby cause decreased chlorophyll accumulation in chl9 mutant leaves.
Fig. 2 Electron microscopic analysis of wild-type and chl9 mutants. [1].
Expression Pattern
Evolution
Subcellular localization
Labs working on this gene
- Department of Plant Science, Seoul National University Seoul 151-921, Republic of Korea
References
- ↑ 1.0 1.1 1.2 Zhang H, Li J, Yoo JH, Yoo SC, Cho SH, Koh HJ, Seo HS, Paek NC. Rice Chlorina-1 and Chlorina-9 encode ChlD and ChlI subunits of Mg-chelatase, a key enzyme for chlorophyll synthesis and chloroplast development. Plant Mol Biol. 2006 Oct;62(3):325-37. Epub 2006 Aug 17. PubMed PMID: 16915519.
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