Isolation of dimorphic chloroplasts from the single-cell C<sub>4 </sub>species <it>Bienertia sinuspersici</it>
2012
Lung Shiu-Cheung | Yanagisawa Makoto | Chuong Simon DX
<p>Abstract</p> <p>Three terrestrial plants are known to perform C<sub>4 </sub>photosynthesis without the dual-cell system by partitioning two distinct types of chloroplasts in separate cytoplasmic compartments. We report herein a protocol for isolating the dimorphic chloroplasts from <it>Bienertia sinuspersici</it>. Hypo-osmotically lysed protoplasts under our defined conditions released intact compartments containing the central chloroplasts and intact vacuoles with adhering peripheral chloroplasts. Following Percoll step gradient purification both chloroplast preparations demonstrated high homogeneities as evaluated from the relative abundance of respective protein markers. This protocol will open novel research directions toward understanding the mechanism of single-cell C<sub>4 </sub>photosynthesis.</p>
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