2 edition of characterization and initial identification of the elevated carbon dioxide-insensitive Arabidopsis thaliana mutant cnr3-1. found in the catalog.
characterization and initial identification of the elevated carbon dioxide-insensitive Arabidopsis thaliana mutant cnr3-1.
Tara Eve Jowett
Written in English
Predicting and managing the impact of the projected doubling of atmospheric CO2 during this century necessitates the investigation of the mechanisms governing plant response to elevated CO2. The objective of this study was to investigate the nature and underlying cause(s) of the pleiotropic phenotypes associated with the previously isolated CO 2-insensitive Arabidopsis thaliana mutant cnr3-1. A variety of developmental abnormalities were investigated, including leaf morphology, phase change, flowering time, response to hormones and pre- and post-pollination reproductive development. Previously reported as a single-insert T-DNA mutant, cnr3-1 was discovered to contain two T-DNA inserts. Single-insert lines were subsequently generated and one insert was identified as a lesion in the gene At3g55980. The elimination of the At3g55980 protein confers dominant sugar-insensitive, elevated CO 2-insensitve and shortened silique phenotypes and contributes to dominant early-flowering and large seed phenotypes. Bioinformatic analysis provides some insight into both the regulation of the At3g55980 promoter and potential protein function.
|The Physical Object|
|Number of Pages||160|
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