The roles of specific xanthophylls in photoprotection

Photosynthesis data were determined through use of a Walz Junior-PAM (Pulse Amplitude Modulated) fluorometer (Walz GmbH, Effeltrich, Germany). Walz's WinControl-3 software was programmed to measure the Yield of Photosystem II, and energy dissipation routes including NPQ (non-photosynthetic quenching by the xanthophyll cycle) and NO (quenching by other routes).

Different roles of alpha- and beta-branch xanthophylls in photosystem assembly and photoprotection.

They may be the result of nonspecificmechanisms (lipoxygenase, photo-oxidation) as well as of specific mechanisms (dioxygenases). Theyhave significant roles as developmental and environmental response signals.


The Role of Glycolipids in Photosynthesis - ResearchGate

The roles of hydrocarbons in the recognition systems of insects has been reviewed ().

The high levels of the xanthophylls in the macula may indicate a protective role ...


Analysis of the xanthophyll binding LHC showed that the Lhcb5 ...


All plants are made up of one or more units called cells

NPQ: Non-photochemical quenching of chlorophyll fluorescence, specifically shunting of energy away from photosynthesis by xanthophylls, mostly as a protective measure against excessive light energy. Considered to be a 'regulated' means of energy dissipation.

Full text of "NEW" - Internet Archive

Xanthophylls: Oxygenated carotenoids. Important xanthophylls found in zooxanthellae are diadinoxanthin and diatoxanthin - these play an important role in protecting them from excessive light. Dinoxanthin is an accessory pigment that transfers collected energy to dinoflagellates photosystems (with an unknown efficiency) and might act as an antioxidant as well.

What Are Carotenoids | Carotenoid | Photosynthesis

Photodamage of the photosynthetic apparatus and its dependence on the leaf developmental stage in the npq1 Arabidopsis mutant deficient in the xanthophyll cycle enzyme violaxanthin de-epoxidase.

are necessary for photosynthesis in ..

The possible roles of these photophysical and physicochemical changes in the mechanism(s) of xanthophyll-mediated energy dissipation via quenching of Chl fluorescence are discussed.

at the very heart of photosynthesis

The possible roles of these photophysical and physicochemical changes in the mechanism(s) of xanthophyll-mediated energy dissipation via quenching of Chl fluorescence are discussed.">