Fluorescence characteristics of photoinhibition and recovery in a sun and a shade species of the red algal genus porphyra.

@article{Bose1988FluorescenceCO,
  title={Fluorescence characteristics of photoinhibition and recovery in a sun and a shade species of the red algal genus porphyra.},
  author={S. Bose and S. Herbert and D. C. Fork},
  journal={Plant physiology},
  year={1988},
  volume={86 3},
  pages={
          946-50
        }
}
The effects of light treatment (2000 micromole photons per square meter per second) for varying periods (up to 60 minutes) on chlorophyll fluorescence characteristics and light-limited rates of O(2) evolution were examined in two Porphyra species. Brief light exposures (5-60 seconds) produced a large decrease in variable fluorescence which was not accompained by photoinhibition of light-limited O(2) evolution rates. This rapid decrease in variable fluorescence was suppressed by carbonylcyanide… Expand
Effects of short-term irradiation on photoinhibition and accumulation of mycosporine-like amino acids in sun and shade species of the red algal genus Porphyra.
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The sun type algae presented a higher capacity of acclimation to increased irradiance than the shade type algae, explained by the higher thermal dissipation and by the accumulation of MAAs. Expand
Two components of onset and recovery during photoinhibition of Ulva rotundata
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Short-term transfers of shade-adapted clonal tissue of the marine macroalga Ulva rotundata Blid to higher irradiances led to photoinhibition of room-temperature chlorophyll fluorescence and O2 evolution, and the ratio of variable to maximum (Fv/Fm) and variable (FV) fluorescence, and quantum yield declined with increasing irradiance and duration of exposure. Expand
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Thirteen species from the red algal flora of Helgoland (southern North Sea) were exposed to UVA + UVB radiation for various periods in the laboratory, and dark-adapted variable fluorescence (F v:F m)Expand
Photoacclimation and photoinhibition inUlva rotundata as influenced by nitrogen availability
Clonal tissue of the marine chlorophyte macroalga,Ulva rotundata Blid., was transferred from 100 to 1700 μmol photons · m−2 · s−1 under limiting (1.5 μM NH4+maximum, N/P=2) and sufficient (15 μMExpand
Photosynthetic response of Ulva rotundata to light and temperature during emersion on an intertidal sand flat
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The results suggest that the diurnal response to PFD in this shallow water species is modified by tidal and meteorological factors, which allows it to tolerate and even thrive in the harsh intertidal environment. Expand
In vivo ANALYSIS OF SLOW CHLOROPHYLL FLUORESCENCE INDUCTION KINETICS IN ALGAE: PROGRESS, PROBLEMS AND PERSPECTIVES
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Intensive fluorescence research has been motivated by the apparent advantages of the technique for fluorescent measurement: It is a noninvasive method that yields reproducible results in short time, and it can be applied to all photosynthetic organisms, even if only very small amounts of material are available. Expand
Photoacclimation and photoinhibition in Ulva rotundata as influenced by nitrogen availability
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Insufficient diel-carbon balance because of elevated Rd and declining Pm and tissue-N, rather than photochemical damage per se, was the apparent proximate cause of decelerating growth rate and subsequent tissue degeneration under N deficiency in U. rotundata. Expand
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The prevailing leaf environment and also the growth conditions that cause plants, but in particular Actinidia deliciosa (kiwifruit), to become susceptible to photoinhibition and those that influence the subsequent recovery, are addressed. Expand
Differential recovery of PSII function and electron transport rate in symbiotic dinoflagellates as a possible determinant of bleaching susceptibility of corals
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Resistance to photoinhibition represents an adaptation of photosynthesis in P. perforata which may contribute to its persistance in the extreme environment of its intertidal habitat. Expand
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Abstract Time courses of chlorophyll fluorescence and fluorescence spectra at 77 K after various light treatments were measured in the red alga, Porphyra perforata . Photosystem (PS) I or II lightExpand
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A model which assumes the rearrangement of charges in the plane of the thylakoid membrane as a primary inducing event in the state 1-state 2 transition may lead to a redistribution of excitation energy among Photosystems I and II by a slow dark process, which may include a conformation change of some protein(s). Expand
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Time course studies indicate that photoinhibition may occur within 2 h following exposure to 350 μE m-2 s-1 in cells grown at 15 μE p-based photosynthesis and is reversible when light levels are lowered within 4 h and the ecological significance of phytoplankton unable to cope with excess photosynthetic excitation energy is discussed. Expand
ΔpH‐dependent chlorophyll fluorescence quenching indicating a mechanism of protection against photoinhibition of chloroplasts
Intact isolated spinach chloroplasts were subjected to photoinhibitory conditions (high light and lack of CO2). Photoinhibition of the electron transport system was considerably diminished when theExpand
Excitation spectra for photosystem I and photosystem II in chloroplasts and the spectral characteristics of the distributions of quanta between the two photosystems.
The parameters listed in the title were determined within the context of a model for the photochemical apparatus of photosynthesis. The fluorescence of variable yield at 750 nm at -196 degrees C isExpand
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