Novel amplification of non-photochemical chlorophyll fluorescence quenching following viral infection inChlorella
نویسندگان
چکیده
منابع مشابه
Modulation of Millisecond Chlorophyll Luminescence by Non-Photochemical Fluorescence Quenching
By combining a high frequency modulation system for measurement of fluorescence with a phosphoroscope type apparatus for measurement of luminescence, recordings of fluorescence and luminescence induction kinetics under identical conditions were obtained. Both measuring sys tems tolerated the application of saturating pulses of white light for rapid, transient elimination of photochemical quenc...
متن کاملPhotochemical and Non-Photochemical Quenching of Chlorophyll Fluorescence Induced by Hydrogen Peroxide
Chlorophyll fluorescence quenching induced by H 20 2 in intact spinach chloroplasts was investi gated with a modulation fluorometer which allows to distinguish between photochemical and non photochemical quenching com ponents by the so-called saturation pulse method. Residual catalase activity was removed by washing and percoll gradient centrifugation. H 20 2 was found to induce pronounced ph...
متن کاملRelaxation of the non-photochemical chlorophyll fluorescence quenching in diatoms: kinetics, components and mechanisms.
Diatoms are especially important microorganisms because they constitute the larger group of microalgae. To survive the constant variations of the light environment, diatoms have developed mechanisms aiming at the dissipation of excess energy, such as the xanthophyll cycle and the non-photochemical chlorophyll (Chl) fluorescence quenching. This contribution is dedicated to the relaxation of the ...
متن کاملRole of electron-transfer quenching of chlorophyll fluorescence by carotenoids in non-photochemical quenching of green plants.
NPQ (non-photochemical quenching) is a fundamental photosynthetic mechanism by which plants protect themselves against excess excitation energy and the resulting photodamage. A discussed molecular mechanism of the so-called feedback de-excitation component (qE) of NPQ involves the formation of a quenching complex. Recently, we have studied the influence of formation of a zeaxanthin-chlorophyll ...
متن کاملChlorophyll fluorescence quenching by xanthophylls
The interactions of the xanthophylls zeaxanthin, antheraxanthin and violaxanthin with chlorophyll, which are relevant for the chlorophyll fluorescence quenching in the non-photochemical quenching (NPQ) process in green plants, are investigated by means of quantum chemical methods. In particular, we use a hybrid approach consisting of time-dependent density-functional theory (TDDFT) and configur...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: FEBS Letters
سال: 1996
ISSN: 0014-5793
DOI: 10.1016/0014-5793(96)00615-1