Abstract
A rapidly growing and fine-textured cell line, NB2P, was established from Japonica rice cultivar Nipponbare and characterized in this study. Addition of casein enzymatic hydrolysate (2 g/L) and pectinase (0.005%) to the suspension medium resulted in a 2-fold-increased rate of cell growth and reduced aggregation. Remarkably, the medium and conditions described here resulted in growth leading to a 9-fold increase in fresh weight 7 d after subculture. High-quality, well-dispersed nuclei were obtained from this NB2P cell culture. Fluorescence-activated cell sorting (FACS) analysis of the isolated nuclei showed a clear separation of each cell cycle phase in both small- and large-scale preparations. On the basis of representative data from the nuclei fraction in the G1 phase, purity of the sorted and recovered nuclei was higher than 98%. The studies described here demonstrate that NB2P culture can be a powerful tool for studying many important plant processes, including DNA replication and cell cycle-related pathways.
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Abbreviations
- 2,4-D:
-
2,4-dichlorophenoxyacetic acid
- DAPI:
-
4′,6-diamidino-2-phenylindole
- FACS:
-
fluorescence-activated cell sorting
- MES:
-
2-(N-morpholino)-ethanesulfonic acid
- PI:
-
propidium iodide
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Lee, TJ., Shultz, R.W., Hanley-Bowdoin, L. et al. Establishment of rapidly proliferating rice cell suspension culture and its characterization by fluorescence-activated cell sorting analysis. Plant Mol Biol Rep 22, 259–267 (2004). https://doi.org/10.1007/BF02773136
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DOI: https://doi.org/10.1007/BF02773136