The Effects of Dehydration‐Rehydration Cycles on Protein Synthesis of Black Locust Seedlings

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Abstract
Protein synthetic activity of polysomes isolated during dehydration‐rehydration cycles of black locust seedlings (Robiniapseudoacacia L.) was investigated. Polysomes of black locust seedlings were reduced by only 20% during water stress and were capable of incorporating 3H‐leucine into peptide chins. RNase activity increased during stress and declined following irrigation. The presence of a protective mechanism is suggested which, if present in other drought hardy species, could help to explain the ability of these species to withstand various levels of water stress.