3. Results
3.1. Isolation of rice protoplasts and protoplast transfection efficiency
Preparation of high-quality rice protoplasts is essential for successful transformation and subsequent procedures and analyses.
Firstly, it is important to prepare protoplasts from fresh, wellgrown seedlings. We usually used 2-week-old rice seedlings
germinated on ½ MS medium. These seedlings were superior to
those cultivated on wet gauze and produced more protoplasts with
a large, round shape. Secondly, the middle region of the seedlings,
rather than the whole seedlings, gave the best results (Fig. 1A).
Isolation of rice protoplasts was performed as described with the
changes noted in the Section 2. Evans blue staining of the prepared
protoplasts, in which dead cells stained blue, showed that almost
all of the protoplasts were viable (Fig. 1B). We used a simple visual
assay to assess transfection efficiency after transfecting protoplasts
with a GFP expression plasmid (HBT-sGFP). More than 70% of protoplasts showed strong GFP fluorescence (Fig. 1C and D). These
results showed that we had prepared high-quality protoplasts
and achieved high transfection rates.
3. Results
3.1. Isolation of rice protoplasts and protoplast transfection efficiency
Preparation of high-quality rice protoplasts is essential for successful transformation and subsequent procedures and analyses.
Firstly, it is important to prepare protoplasts from fresh, wellgrown seedlings. We usually used 2-week-old rice seedlings
germinated on ½ MS medium. These seedlings were superior to
those cultivated on wet gauze and produced more protoplasts with
a large, round shape. Secondly, the middle region of the seedlings,
rather than the whole seedlings, gave the best results (Fig. 1A).
Isolation of rice protoplasts was performed as described with the
changes noted in the Section 2. Evans blue staining of the prepared
protoplasts, in which dead cells stained blue, showed that almost
all of the protoplasts were viable (Fig. 1B). We used a simple visual
assay to assess transfection efficiency after transfecting protoplasts
with a GFP expression plasmid (HBT-sGFP). More than 70% of protoplasts showed strong GFP fluorescence (Fig. 1C and D). These
results showed that we had prepared high-quality protoplasts
and achieved high transfection rates.
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