RNA-DNA HYBRIDIZATION COMPETITION STUDIES ON SENESCING BARLEY LEAVES.

No detectable differences in RNA populations from 7-day-old (young) and 17-day-old (senescent) first seedling leaves of barley were found by RNA-DNA hybridization competition experiments. It is suggested that enzymatic changes during senescence may result from minor changes at the transcription level or alterations at the translation level. [ABSTRACT FROM AUTHOR]