Using the fresh young leaves collected from cultivated strawberry (Fragaria × ananassa Duch. ‘Benihoppe’) as material, we separated and purified the chloroplasts by high saltlow pH buffer followed by Percoll density gradient centrifugation. The chloroplast DNA (cpDNA) was extracted by SDSProtein K method. The results of fluorescence microscope examination, agarose gel electrophoresis and PCR amplification showed that this method could obtain high integrity chloroplasts and high quality and purity cpDNA, which could meet the basic requirements of subsequent genome sequencing experiments. It could provide reference for extraction cpDNA of Fragaria and other herbaceous plants.
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CHENG Hui, CHEN Baoyu, ZHANG Yan, CHEN Ying, QIAO Yushan. An Efficient Protocol for Intact Chloroplast Isolation and cpDNA Extraction in Cultivated Strawberry[J]. Acta Botanica Boreali-Occidentalia Sinica,2017,37(12):2496-2501