Biosynthesis and regulation of polyamines in higher plants --; Cellular systems for the study of the biosynthesis of polyamines and ethylene, as well as of virus multiplication --; Occurrence of spermine in chromatin of Zea mays --; Purification of a non-histone protein with properties of antizyme to ornithine decarboxylase from germinated barley seeds --; Effects of methylglyoxal-bis-(guanylhydrazone) and abscisic acid on polyamine metabolism in embryonectomized barley seeds --; The inhibition and activation of polyamine oxidase from oat seedlings --; Polyamine catabolism in higher plants: Characterization of pyrroline dehydrogenase --; RNA, proteins and polyamines during gametophytic and androgenetic development of pollen in Nicotiana tabacum and Datura innoxia --; The possible involvement of polyamines in the development of tomato fruits in vitro --; The effects of spermidine synthesis inhibitors on in vitro plant development --; Polyamine levels as related to growth, differentiation and senescence in protoplast-derived cultures of Vigna aconitifolia and Avena sativa --; Effect of polyamines and guanidines on the growth, nitrogen assimilation and reserve mobilization in germinating radish seeds --; Correlations between polyamine ratios and growth patterns in seedling roots --; Metabolism of polyamines in NaCl-resistant cell lines from Nicotiana sylvestris --; Characterization of a carrot callus line resistant to high concentrations of putrescine --; The occurrence and possible function of hydroxycinnamoyl acid amides in plants --; Manipulation of the polyamine content and senescence of apical buds of G2 peas.