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  • Title: CHANGES IN THE FREE NUCLEOTIDE PATTERN OF PEA SEEDS IN RELATION TO GERMINATION.
    Author: BROWN EG.
    Journal: Biochem J; 1965 May; 95(2):509-14. PubMed ID: 14340101.
    Abstract:
    1. Major changes in the free nucleotide and nucleoside pattern of germinating pea seeds are described. 2. During the imbibition phase of germination (0-16hr.) there was a 250% increase in ATP content and a parallel fall in AMP content without detectable change in ADP content. Metabolic implications are discussed. 3. The main nucleoside changes during imbibition were a 93% increase in xanthosine content and a 39% fall in adenosine content. 4. During the last phase of germination, leading to the emergence of the radicle, there is a general fall in free nucleotide content. AMP, ADP and ATP contents decreased 73, 48 and 52% respectively. Acetyl-3'-dephosphocoenzyme A concentration fell by 53%. However, the (NADP(+)+NADPH)/(NAD(+)+NADH) ratio increased, and except for uridine content (52% decrease) the nucleoside pattern changed little. 5. A sixfold increase in the concentration of an unidentified UDP-glycosyl compound occurs at this stage, although the content of UDP-glucose and UDP-galactose remained unchanged. 6. No free purine or pyrimidine bases could be detected at any stage of germination.
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