• Corpus ID: 88529955

PROGRAMA DE PÓS-GRADUAÇÃO EM CIÊNCIAS BIOLÓGICAS (BIOLOGIA VEGETAL) RESPOSTAS DE CURTO PERÍODO DAS CARACTERÍSTICAS FOTOSSINTÉTICAS DA ALGA VERMELHA Batrachospermum delicatulum A TEMPERATURA E IRRADIÂNCIA

@inproceedings{Kusakariba2007PROGRAMADP,
  title={PROGRAMA DE P{\'O}S-GRADUAÇ{\~A}O EM CI{\^E}NCIAS BIOL{\'O}GICAS (BIOLOGIA VEGETAL) RESPOSTAS DE CURTO PER{\'I}ODO DAS CARACTER{\'I}STICAS FOTOSSINT{\'E}TICAS DA ALGA VERMELHA Batrachospermum delicatulum A TEMPERATURA E IRRADI{\^A}NCIA},
  author={Thiago Kusakariba},
  year={2007}
}
Short-term responses of photosynthetic characteristics to temperature and irradiance were analyzed in the rhodophyte Batrachospermum delicatulum under natural and laboratory conditions. The diurnal variation of photosynthetic parameters by chlorophyll fluorescence was sampled in two seasons (June, cool and dry season; October, warm and rainy season) in a stream of northwest region of Sao Paulo state (2043’24”S, 4918’21”W). Values of EQY and PQY (effective and potential quantum yield… 

References

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Six populations of the freshwater red alga Batrachospermum delicatulum (Skuja) Necchi & Entwisle, including gametophyte and 'Chantransia' stage, were analysed in culture and natural conditions applying chlorophyll fluorescence and oxygen evolution, revealing significant differences among populations and phases for most photosynthetic parameters.

Photosynthetic responses to temperature in tropical lotic macroalgae

Different optimal temperatures were found for individual species by each technique, generally under lower temperatures by 02 evolution, indicating dependence on distinct factors: increases in temperature generally induced higher ETR due to increased enzymatic activity, whereas increments of enzyme activity were compensated by increased respiration and photorespiration leading to decreases in net photosynthesis.

Daily course of photosynthesis and photoinhibition in Chondrus crispus (Rhodophyta) from different shore levels

The underwater light climate at Roscoff (French Atlantic coast), characterized by transmittance spectra, was shown to be intermediate between Jerlov coastal type 1 and oceanic type III.

Light-Related Photosynthetic Characteristics of Lotic Macroalgae

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  • Environmental Science
    Hydrobiologia
  • 2004
Results suggests adaptation to the light regime rather than functional attributes related to the growth form, and suggest that macroalgae may be important primary producers in lotic ecosystems.

Determination of microphytobenthos PSII quantum efficiency and photosynthetic activity by means of variable chlorophyll fluorescence

It is hypothesised that there is a continuous vertical migration in the top layer of the sediment, where algae can avoid photoinhibition due to prolonged periods of high irradiance and lack of CO2 by migrating downwards while others migrate upwards.

Photoinhibition of photosynthesis represents a mechanism for the long-term regulation of photosystem II

The data give support for the view that photoinhibition of the reaction centres of PSII represents a stable, long-term, down-regulation of photochemistry, which occurs in plants under sustained high-light conditions, and replaces part of the regulation usually exerted by the transthylakoid ΔpH gradient.

Strategies providing success in a variable habitat: III. Dynamic control of photosynthesis in Cladophora glomerata

Diurnal patterns of photosynthesis were studied in July and April populations of Cladophora glomerata (L.) Kutz, from open and from shaded sites, and different optimum temperatures of electron transport rate and oxygen evolution were exhibited.

Daily course of photosynthesis and photoinhibition in marine macroalgae investigated in the laboratory and field

A relation between photoinhibitory sensitivity and the zonation of the algae in the littoral exists, where the red algae required up to 48 h to recover from a strong photoinhibition.

PHOTOINHIBITION AND PHOTOACCLIMATION OF TURF ALGAL COMMUNITIES ON A TEMPERATE REEF, AFTER IN SITU TRANSPLANTATION EXPERIMENTS 1

The possible acclimation strategies of turfs are discussed, taking into account the balance between photoacclimation, production, and growth strategy, and changes in photosynthesis capacity were accompanied by changes in respiration, so that the ratio of net to gross photosynthetic capacity remained high and constant over the whole range of light levels.