Summary
Amino acid, polyamine and protein concentrations in seeds and their evolution during seed germination of two dipterocarp species, Hopea odorata and Dipterocarpus alatus, were determined with the help of a multianalytical system. Glutamic acid and glutamine were the major amino compounds present. Hopea seeds also contain high levels of aspartic acid/asparagine, serine, threonine, arginine and alanine, while those of Dipterocarpus contain high levels of alanine, arginine and threonine. These species were quite different in their germination behavior and thus in their protein and amine metabolism rates. In Hopea, polyamines increased during the first 3 days of germination and reached a maximum by the 3rd day, 1 day before maximum germination rate. In Dipterocarpus polyamines reached their maximum at the 6th day while maximum germination rate is observed by the 7th day. This suggests that polyamine compounds could play a role in the early part of the germination process in Hopea and Dipterocarpus seeds. The possibility that control of polyamine biosynthesis could be used for the establishment of biochemical methods to improve seed storage and to control germination of these recalcitrant seeds is discussed.
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Huang, H., Villanueva, V.R. Amino acids, polyamines and proteins during seed germination of two species of Dipterocarpaceae . Trees 7, 189–193 (1993). https://doi.org/10.1007/BF00199621
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DOI: https://doi.org/10.1007/BF00199621