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In vitrotranslation of maize ADH: Evidence for the anaerobic induction of mRNA

✍ Scribed by Robert J. Ferl; Mark D. Brennan; Drew Schwartz

Publisher: Springer
Year: 1980
Tongue: English
Weight: 546 KB
Volume: 18
Category: Article
ISSN: 0006-2928
DOI: 10.1007/bf00484585

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✦ Synopsis

Total cellular RNA from anaerobically stressed maize seedling roots was used to stimulate in vitro translation of authentic maize alcohol dehydrogenase (ADH) in a rabbit reticulocyte lysate system. Total products from such reactions were displayed on NEPHGE-SDS two-dimensional gels and the Adhl-specific translation products were identified by using RNA from sib seedlings segregating for Adhl charge and size variants. The application of a rapid RNA isolation procedure allowed the efficient isolation of biologically active RNAs from small amonts of seedling material. Maize ADHs translated in vitro are identical in size to in vivo ADH. Further, no ADH was detected in the products of an in vitro translation reaction stimulated by total RNA from aerobically grown seedlings. This suggests that induction of ADH protein by anaerobic stress is accomplished by production of Adh mRNA rather than activation of sequestered mRNA. The mRNAs for maize ADH1 and ADH2 are among a small class of mRNAs induced during anaerobiosis.

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