Bryant JA, Greenway SC, West GA. Development of nuclease activity in cotyledons of Pisum sativum L.
PLANTA 1976;
130:137-140. [PMID:
24424589 DOI:
10.1007/bf00384410]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/1975] [Accepted: 01/14/1976] [Indexed: 06/03/2023]
Abstract
The RNA content of pea cotyledons shows little change during the first five days of germination at 22°C. From day five onwards there is a rapid net degradation of RNA, which continues until day thirteen. The DNA content of the cotyledons increases slightly during the first nine days of germination, after which there is a net decrease. Acid and alkaline ribonuclease activities increase markedly between day one and day five, and then decline between day five and day nine. There is a second increase in the activities of both enzymes from day nine onwards. Soluble deoxyribonuclease activity exhibits a single peak, seven days after the onset of germination. The first increase in acid ribonuclease activity is only partially inhibited by cycloheximide at concentrations which severely inhibit protein synthesis.
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