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Changes in the properties of cell wall pectin methylesterase along the Vigna radiata hypocotyl
Author(s) -
Goldberg Renée
Publication year - 1984
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1984.tb06100.x
Subject(s) - hypocotyl , vigna , pectinesterase , radiata , cell wall , pectin , botany , enzyme , chemistry , germination , biochemistry , biology , pectinase
The properties of cell wall pectinesterase (EC 3.1.1.11) from Vigna radiata (L.) Wilczek hypocotyl were investigated with immobilized and solubilized wall enzymes. Along the hypocotyl, the decrease of growth potential coincides with significant changes of the characteristics of the pectinesterase activities. As hypocotyl cells grow older, the proportion of ionically bound enzymes decreases and pH profile, sensitivity to cations and affinity for pectin change. The possible significance of these observations is discussed.