Biochemical Studies on Pollen Part X The Enzymes related to the Metabolism of Carbohydrates in Pollen (2) On Invertase and Maltase of Pollen

• Published in: Nippon Nōgeikagaku Kaishi Vol. 42; no. 1; pp. 8 - 12
• Main Authors: KATSUMATA, Teizo, TOGASAWA, Yoshihisa
• Format: Journal Article
• Language: Japanese
• Published: Japan Society for Bioscience, Biotechnology, and Agrochemistry 1968
• ISSN: 0002-1407; 1883-6844
• DOI: 10.1271/nogeikagaku1924.42.8

Invertase and maltase in the pollen of Pinus densiflora, Zea Mays and Cucurbita maxima were studied. (1) The pollen of P. densiflora was very low in invertase activity, and its optimum action was found to occur at pH 4.0, 40°C. During the germination of the pollen on sugarless- and sucrose-agar media, its activity increased in either case, especially on the sucrose-agar medium. (2) The pollen of Z. Mays and C. maxima was very high in invertase activity, and its optimum action was found to occur at pH 5.0, 40°C, in each pollen. During the germination of the pollen on the sucrose-agar medium, its activity increased in each pollen. (3) Maltase activity was detected only in the pollen of P. densiflora, and its optimum action was found to occur at pH 4.5, 40°C. During the germination of the pollen on sugarless- and sucrose-agar media, its activity increased only at the early stage of growth on the sugarless-agar medium, while its activity decreased with the lapse of time in either case, especially on the sucrose-agar medium.