Abstract
Bleomycin, a glycopeptide antibiotic produced by the bacterium Streptomyces verticillus, has been demonstrated to be an effective mutagen in Arabidopsis thaliana. The objective of the present study was to determine the effect of bleomycin on embryo production and to assess the genetic variation of the doubled haploid (DH) populations by amplified fragment length polymorphism (AFLP). The effects of bleomycin on microspore embryogenesis and cell division were investigated using three concentrations of bleomycin in five semi-winter genotypes of Brassica napus viz. T8, T10, B409, P30, and DH1142. Inclusion of bleomycin in the culture medium at a concentration of 0.1 μg ml−1 for 30 min significantly improved embryo production and cell division in all five genotypes. Embryo production was induced at rates two- and four-fold higher than controls after bleomycin treatment. Fifty plants regenerated by microspore embryogenesis treated with bleomycin in addition to non-treated controls of T8, T10, and B409 were selected for AFLP analysis. The results suggest that microspore culture is capable of producing 0.095–0.114% genetic variation, and there was no effect of bleomycin treatment on genetic stabilisation of doubled haploid populations versus the non-treated control.
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Abbreviations
- DH:
-
Doubled haploid
- ALFP:
-
Amplified fragment length polymorphism
- PCR:
-
Polymerase chain reaction
- B5 medium:
-
Gamborg medium
- NLN medium:
-
Nitsch & Nitsch medium
- RAPD:
-
Random amplified polymorphic
- STMS:
-
Sequence tagged microsatellite site
- PCIB:
-
p-Chlorophenoxyisobutyric acid
- PEG:
-
Polyethylene glycol
- NIR:
-
Near Infrared Spectroscopy
- CV:
-
Coefficient of variation
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Acknowledgments
We are grateful for the financial support of the national key basic research special foundation of China (No.2006CB101604 and No. 2007CB109006), the national high-tech research and development program (2009AA101105), the modern agriculture industrialisation system construction (nycytx-00501) and the national key technology R&D program (2008BAD97B04). We also thank Professor Shyam Prakash, Biotechnology Centre, Indian Agricultural Research Institute for critically evaluating this manuscript.
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Zeng, X., Wen, J., Wan, Z. et al. Effects of Bleomycin on microspore embryogenesis in Brassica napus and detection of somaclonal variation using AFLP molecular markers. Plant Cell Tiss Organ Cult 101, 23–29 (2010). https://doi.org/10.1007/s11240-009-9658-z
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DOI: https://doi.org/10.1007/s11240-009-9658-z