title: Protochlorophyllide resynthesis in dark-grown bean leaves.
abstract: The protochlorophyllide content of dark-grown bean leaves was determined at various ages. It was detectable the second day after germination and reached a maximum on about the tenth day.The resynthesis of protochlorophyllide following a single irradiation and the rate of the 685 to 673 mmu shift of the newly formed chlorophyll was examined. Leaves up to 5-days old show no lag phase in protochlorophyllide resynthesis. By the sixth day, a lag phase is evident which increases with age. The rate of the 685 to 673 mmu shift is similarly age dependent.
authors.affiliation: Biology Department, Brookhaven National Laboratory, Upton, New York 11973.
authors.forename: G A
authors.initials: GA
authors.lastname: Akoyunoglou
authors.forename: H W
authors.initials: HW
authors.lastname: Siegelman