Abstract
A qualitative assay for the detection of photosynthetic activity in protoplasts is described. Leaf protoplasts from atrazine resistant and susceptible biotypes of Brassica napus suspended in medium with 0.01% nitro-blue tetrazolium and 10 to 100 µM atrazine showed clear differences in staining. Staining was detectable with 0.001% fluorescein-labelled tetrazolium which, unlike nitro-blue tetrazolium, did not cause collapse of the protoplasts.
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Abbreviations
- atrazine:
-
2-chloro-4-(ethylamino)-6(isopropyl-amino)-s-triazine
- DCPIP:
-
dichlorophenolindophenol
- fluorescein-labelled tetrazolium:
-
2,5-bis-(4-nitrophenyl)-3-(5-fluoresceinyl)-2H-tetrazolium chloride
- Hepes:
-
N-2-hydroxyethylpiperazine-N′-2-ethanesulfonic acid
- Mes:
-
2-(N-morpholino)ethanesulfonic acid
- nitro-blue tetrazolium:
-
2,2′,5,5′-tetraphenyl-(3,3′-dimethoxy-4,4′-biphenylene)-ditetrazolium chloride
- PS:
-
0.6M sorbitol + 10mM NaHCO3 + 50mM Hepes, pH 7.6
- SM:
-
0.5M sorbitol + 10mM Mes, pH 5.8
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Communicated by O. Gamborg
This work has been submitted by D. R. in partial fulfillment of the requirement for the Ph.D. degree
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Robertson, D., Earle, E.D. Nitro-blue tetrazolium: A specific stain for photosynthetic activity in protoplasts. Plant Cell Reports 6, 70–73 (1987). https://doi.org/10.1007/BF00269743
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DOI: https://doi.org/10.1007/BF00269743