Summary
A mitochondrial fraction obtained from 0.5 g of leaves was purified on a 0.75 ml Percoll gradient and used for an in vitro mitochondrial protein synthesis assay in the presence of [35S] methionine. A set of 15 to 20 labeled polypeptides were revealed by autoradiography after sodium dodecylsulfate polyacrylamide gel electrophoresis. This could be applied at an early growth stage by using a few leaves from individual seedlings. It revealed the presence of variant mitochondrially translated polypeptides in green leaves of cytoplasmic male sterile lines from various cultivated plants of large economic importance: maize, wheat, sugar beet, tobacco and faba bean. This non-destructive microanalysis is thus of general use and opens new possibilities for rapid and large mass screening of mitochondrial parameters such as male sterility.
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Boutry, M., Faber, AM., Charbonnier, M. et al. Microanalysis of plant mitochondrial protein synthesis products:. Plant Mol Biol 3, 445–452 (1984). https://doi.org/10.1007/BF00033392
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DOI: https://doi.org/10.1007/BF00033392