Abstract
Barley chloroplasts contain a latent chlorophyll-bleaching activity. It is closely associated with the thylakoid, and depends on the presence of free fatty acids such as linolenic acid. Chlorophyll-bleaching is strictly dependent on oxygen. The principle responsible for the linolenate-dependent bleaching effect is tentatively termed «chlorophyll oxidase».The effects of various inhibitors, particularly chelators of Cu and Fe on «chlorophyll oxidase» resemble the effects on the bleaching of chlorophyll by soybean lipoxygenase in the presence of linolenic acid. However, «chlorophyll oxidase» differs clearly from lipoxygenase in that pigment-bleaching is not associated with the production of linolenate hydroperoxide. Moreover, «chlorophyll oxidase» is active in the presence of oleic- and even stearic acid and thus is distinct from lipoxygenase which requires fatty acids containing a 1,4 pentadiene unit.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
