Increasing Temperature Counteracts the Negative Effect of UV Radiation on Growth and Photosynthetic Efficiency of Microcystis aeruginosa and Raphidiopsis raciborskii.


:High temperature can promote cyanobacterial blooms, whereas ultraviolet radiation (UVR) can potentially depress cyanobacterial growth by damaging their photosynthetic apparatus. Although the damaging effect of UVR has been well documented, reports on the interactive effects of UV radiation exposure and warming on cyanobacteria remain scarce. To better understand the combined effects of temperature and UVR on cyanobacteria, two strains of nuisance species, Microcystis aeruginosa (MIRF) and Raphidiopsis raciborskii (formerly Cylindrospermopsis raciborskii, CYRF), were grown at 24°C and 28°C and were daily exposed to UVA + UVB (PAR + UVA+UVB) or only UVA (PAR + UVA) radiation. MIRF and CYRF growth rates were most affected by PAR + UVA+UVB treatment and to a lesser extent by the PAR + UVA treatment. Negative UVR effects on growth, Photosystem II (PSII) efficiency and photosynthesis were pronounced at 24°C when compared to that at 28°C. Our results showed a cumulative negative effect on PSII efficiency in MIRF, but not in CYRF. Hence, although higher temperature ameliorates UVR damage, interspecific differences may lead to deviating impacts on different species, and combined elevated temperature and UVR stress could influence species competition.


Photochem Photobiol


Noyma NP,Mesquita MCB,Roland F,Marinho MM,Huszar VLM,Lürling M




Has Abstract


2021-01-04 00:00:00






  • Comparative study of Ru(bpz)3(2+) Ru(bipy)3(2+) and Ru(bpz)2Cl2 as photosensitizers of DNA cleavage and adduct formation.

    abstract::The efficiency of ruthenium complexes for photosensitizing DNA damage depends on the oxidizing character of their ligands. Here we report on the difference in behavior of tris(2.2'-bipyrazyl)ruthenium(II) (Ru[bpz]3(2+)), tris(2,2'-bipyridyl)ruthenium(II) (Ru[bipy]3(2+)) and cis-dichlorobis (2,2'-bipyrazyl)ruthenium(II...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Vicendo P,Mouysset S,Paillous N

    更新日期:1997-04-01 00:00:00

  • On the evidence from high-intensity two-photon laser photolysis for energy transfer from high-lying quasi-Rydberg states of thymine to iso-energetic states of water.

    abstract::High intensity two-photon picosecond excitation at 266 nm (effective energy 9.2 eV) has been shown to cause efficient photolysis of thymine in aqueous solution. Experimental results for the quantum yield of solvated electrons, phi (eaq-), and the net consumption of thymine, phi(-Thy) have been interpreted (Oraevsky an...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Daniels M

    更新日期:1991-07-01 00:00:00

  • MicroRNAs and photocarcinogenesis.

    abstract::As a new class of sequence-specific regulators of gene expression, the microRNAs (miRNA) form a regulatory network with growth factors and transcription factors participating in various biological processes. It is now being recognized that the various key processes involved in cancer induction are under the control of...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章,评审


    authors: Syed DN,Lall RK,Mukhtar H

    更新日期:2015-01-01 00:00:00

  • Pomegranate fruit extract modulates UV-B-mediated phosphorylation of mitogen-activated protein kinases and activation of nuclear factor kappa B in normal human epidermal keratinocytes paragraph sign.

    abstract::Excessive exposure of solar ultraviolet (UV) radiation, particularly its UV-B component, to humans causes many adverse effects that include erythema, hyperplasia, hyperpigmentation, immunosuppression, photoaging and skin cancer. In recent years, there is increasing use of botanical agents in skin care products. Pomegr...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Afaq F,Malik A,Syed D,Maes D,Matsui MS,Mukhtar H

    更新日期:2005-01-01 00:00:00

  • Ecotoxicological effects of combined UVB and organic contaminants in coastal waters: A review.

    abstract::Organisms living in coastal waters are exposed to anthropogenic contaminants from terrestrial drainage, ice melting and maritime traffic and to enhanced UVB radiation (UVBR; 280-320 nm) caused by decreased concentrations of ozone in the stratosphere. This article reviews available information about the combined effect...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章,评审


    authors: Pelletier E,Sargian P,Payet J,Demers S

    更新日期:2006-07-01 00:00:00

  • Seasonal variation in measured solar ultraviolet radiation exposure of adults in subtropical Australia.

    abstract::Generating accurate population-specific public health messages regarding sun protection requires knowledge about seasonal variation in sun exposure in different environments. To address this issue for a subtropical area of Australia, we used polysulphone badges to measure UVR for the township of Nambour (26 degrees la...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Neale RE,Hamilton AR,Janda M,Gies P,Green AC

    更新日期:2010-03-01 00:00:00

  • Photosensitization with bacteriochlorins.

    abstract::Biophysical and photobiological properties of a group of bacteriochlorins were compared with efficacy of these products for photodynamic therapy of murine tumors. Predictive factors for selective photosensitization in vivo include affinity binding to lipoproteins greater than albumin, extinction coefficient at the wav...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Kessel D,Smith KM,Pandey RK,Shiau FY,Henderson B

    更新日期:1993-08-01 00:00:00

  • Absorbance changes by aromatic amino acid side chains in early rhodopsin photointermediates.

    abstract::Absorbance changes were monitored from 250 to 650 nm during the first microsecond after photolysis of detergent suspensions of bovine rhodopsin at 20 degrees C. Global analysis of the resulting data produced difference spectra for bathorhodopsin, BSI and lumirhodopsin which give the change in absorbance of the aromati...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Lewis JW,Jäger S,Kliger DS

    更新日期:1997-12-01 00:00:00

  • Preclinical evaluation of a novel water-soluble chlorin E6 derivative (BLC 1010) as photosensitizer for the closure of the neovessels.

    abstract::In the present study, photodynamic activity of a novel photosensitizer (PS), Chlorin e(6)-2.5 N-methyl-d-glucamine (BLC 1010), was evaluated using the chorioallantoic membrane (CAM) as an in vivo model. After intravenous (i.v.) injection of BLC 1010 into the CAM vasculature, the applicability of this drug for photodyn...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Pegaz B,Debefve E,Borle F,Ballini JP,Wagnières G,Spaniol S,Albrecht V,Scheglmann D,Nifantiev NE,van den Bergh H,Konan YN

    更新日期:2005-11-01 00:00:00

  • p53 Mutations in hairless SKH-hr1 mouse skin tumors induced by a solar simulator.

    abstract::In this study, we investigated whether the spectrum of p53 mutations in skin tumors induced in hairless SKH-hr1 mice by a solar simulator (290-400 nm) are similar to those found in skin tumors induced in C3H mice by UV radiation from unfiltered (250-400 nm) and Kodacel-filtered (290-400 nm) FS40 sunlamps. Analysis of ...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Ananthaswamy HN,Fourtanier A,Evans RL,Tison S,Medaisko C,Ullrich SE,Kripke ML

    更新日期:1998-02-01 00:00:00

  • Photophysical properties of metal ion functionalized NaY zeolite.

    abstract::A series of luminescent ion exchanged zeolite are synthesized by introducing various ions into NaY zeolite. Monometal ion (Eu(3+), Tb(3+), Ce(3+), Y(3+), Zn(2+), Cd(2+), Cu(2+)) exchanged zeolite, rare-earth ion (Eu(3+), Tb(3+), Ce(3+)) exchanged zeolite modified with Y(3+) and rare-earth ion (Eu(3+), Tb(3+), Ce(3+)) ...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Duan TW,Yan B

    更新日期:2014-05-01 00:00:00

  • Pluronic F-127: An Efficient Delivery Vehicle for 3-(1'-hexyloxy)ethyl-3-devinylpyropheophorbide-a (HPPH or Photochlor).

    abstract::To determine the impact of delivery vehicles in photosensitizing efficacy of HPPH, a hydrophobic photosensitizer was dissolved in various formulations: 1% Tween 80/5% dextrose, Pluronic P-123 and Pluronic F-127 in 0.5%, 1% and 2% phosphate buffer solutions (PBS). HPPH was also conjugated to Pluronic F-127, and the res...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Cacaccio J,Durrani F,Cheruku RR,Borah B,Ethirajan M,Tabaczynski W,Pera P,Missert JR,Pandey RK

    更新日期:2020-05-01 00:00:00

  • Xeroderma pigmentosum in the United kingdom.

    abstract::The seminal discovery by James Cleaver of defective DNA repair in xeroderma pigmentosum (XP) opened up an ever-expanding field of DNA repair-related disorders. In addition, it put XP on the map and has led to improved diagnosis, care and management of affected patients. In the United Kingdom, we recently established a...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Lehmann AR

    更新日期:2015-03-01 00:00:00

  • Interspecific variation in UV defense mechanisms among temperate freshwater fishes.

    abstract::An important step in predicting the effects of future increases in UV radiation (UVR) is to evaluate the mechanisms that organisms use to prevent and repair DNA damage and determine how those mechanisms influence UVR sensitivity. Damage is prevented to varying degrees through photoprotection and repaired via two main ...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Olson MH,Mitchell DL

    更新日期:2006-03-01 00:00:00

  • Oculocutaneous albinism in sub-Saharan Africa: adverse sun-associated health effects and photoprotection.

    abstract::Oculocutaneous albinism (OCA) is a genetically inherited autosomal recessive condition. Individuals with OCA lack melanin and therefore are susceptible to the harmful effects of solar ultraviolet radiation, including extreme sun sensitivity, photophobia and skin cancer. OCA is a grave public health issue in sub-Sahara...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章,评审


    authors: Wright CY,Norval M,Hertle RW

    更新日期:2015-01-01 00:00:00

  • Computational analysis of the oxygen addition at the C4a site of reduced flavin in the bacterial luciferase bioluminescence reaction.

    abstract::The energetic characteristics of selected reaction steps in the bacterial luciferase-catalyzed luminescence reaction were examined by computation using the MNDO-PM3 method. Specifically, a three-step model was proposed to account for the reaction between oxygen and reduced riboflavin 5'-phosphate (1,5H2-FMN) to genera...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Wada N,Sugimoto T,Watanabe H,Tu SC

    更新日期:1999-07-01 00:00:00

  • Mutation and sister chromatid exchange induction in Chinese hamster ovary (CHO) cells by pulsed excimer laser radiation at 193 nm and 308 nm and continuous UV radiation at 254 nm.

    abstract::We compared mutagenesis and sister chromatid exchange (SCE) induction by 193 nm and 308 nm pulsed excimer laser radiation with 254 nm low intensity continuous wave UV light in Chinese hamster ovary (CHO) cells in culture. The 254 nm radiation was most mutagenic of the radiations, in accordance with expectation, and al...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Rasmussen RE,Hammer-Wilson M,Berns MW

    更新日期:1989-04-01 00:00:00

  • Therapeutic Enhancement of Verteporfin-mediated Photodynamic Therapy by mTOR Inhibitors.

    abstract::Photodynamic therapy (PDT) with photosensitizer verteporfin is a clinically approved vascular disrupting modality that is currently in clinical trial for cancer treatment. In this study, we evaluated PDT in combination with either mTORC1 inhibitor rapamycin or mTORC1/C2 dual inhibitor AZD2014 for therapeutic enhanceme...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Kraus D,Palasuberniam P,Chen B

    更新日期:2020-03-01 00:00:00

  • Dipole and oscillator strengths of chromophores in solution.

    abstract::A widely published expression for dipole strengths of optical transitions is found to require correction. The proposed adjustment, which involves the refractive index of the solvent in which the strengths are measured, may lead to significant changes in predictions that have been based on the equation. We discuss a cl...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Knox RS

    更新日期:2003-05-01 00:00:00

  • UVB-induced inflammatory cytokine release, DNA damage and apoptosis of human oral compared with skin tissue equivalents.

    abstract::People can get oral cancers from UV (290-400 nm) exposures. Besides high outdoor UV exposures, high indoor UV exposures to oral tissues can occur when consumers use UV-emitting tanning devices to either tan or whiten their teeth. We compared the carcinogenic risks of skin to oral tissue cells after UVB (290-320 nm) ex...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Breger J,Baeva L,Agrawal A,Shindell E,Godar DE

    更新日期:2013-05-01 00:00:00

  • Factors affecting M13 bacteriophage inactivation by methylene blue photosensitization.

    abstract::We have investigated the factors that affect the virucidal activity of methylene blue (MB) photosensitization. The M13 bacteriophage was more rapidly inactivated at higher temperatures (6 degrees C < 24 degrees C < 38 degrees C). Rate constants for inactivation were 0.072, 0.139 and 0.260 (log10 inactivation)/ (J/cm2)...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Abe H,Wagner SJ,Kuwabara M,Kamo N,Ikebuchi K,Sekiguchi S

    更新日期:1997-05-01 00:00:00

  • Indication for a radical intermediate preceding the signaling state in the LOV domain photocycle.

    abstract::The blue light photoreceptor phototropin mediates crucial processes in plants leading to optimization of photosynthesis. Phototropin comprises two flavin mononucleotide-binding LOV (light-, oxygen-, or voltage-sensitive) domains. The LOV domains undergo a photocycle upon illumination, in which two intermediates have b...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Bauer C,Rabl CR,Heberle J,Kottke T

    更新日期:2011-05-01 00:00:00

  • Photooxidation of tryptophan leading to 2-aminoacetophenone--a possible reason for the untypical aging off-flavor in wine.

    abstract::2-Aminoacetophenone (AAP) was recognized as the key compound for the so-called untypical aging off-flavor (UTA) in Vitis vinifera wines. In this study, it was shown that AAP can be formed by photooxidation of free and protein-bound tryptophan (TRP) in combination with a subsequent storage in model wine. Solutions of T...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Horlacher N,Schwack W

    更新日期:2014-11-01 00:00:00

  • Molecular mechanisms characterizing cone photoresponses.

    abstract::In the vertebrate retina, rods mediate twilight vision and cones mediate daylight vision. Their photoresponse characteristics are different. The light-sensitivity of a cone is 10(2)-10(3) times lower than that of a rod. In addition, the photoresponse time course is much faster in cones. The mechanism characterizing co...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章,评审


    authors: Tachibanaki S,Shimauchi-Matsukawa Y,Arinobu D,Kawamura S

    更新日期:2007-01-01 00:00:00

  • Identification of a transforming ras oncogene in an ultraviolet radiation-induced corneal tumor of Monodelphis domestica.

    abstract::Chronic exposure of the gray, short-tailed oppossum, Monodelphis domestica to ultraviolet radiation (UVR) induces mesenchymal tumors of the cornea. High molecular weight DNA samples from 6 UVR-induced corneal tumors were assayed for their ability to transform NIH 3T3 cells to tumorigenicity. NIH 3T3 cells transfected ...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Sabourin CL,Freeman AG,Kusewitt DF,Ley RD

    更新日期:1992-03-01 00:00:00

  • Analysis of compact fluorescent lights for use by patients with photosensitive conditions.

    abstract::Ultraviolet radiation (UVR) is hazardous to patients with photosensitive skin disorders, such as lupus erythematosus, xeroderma pigmentosum and skin cancer. As such, these patients are advised to minimize their exposure to UVR. Classically, this is accomplished through careful avoidance of sun exposure and artificial ...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Klein RS,Werth VP,Dowdy JC,Sayre RM

    更新日期:2009-07-01 00:00:00

  • Characterization of psaI and psaL mutants of Synechococcus sp. strain PCC 7002: a new model for state transitions in cyanobacteria.

    abstract::The psaI and psaL genes were characterized from the cyanobacterium Synechococcus sp. strain PCC 7002. The gene organization was different from that reported for other cyanobacteria with psaI occurring upstream and being divergently transcribed from the psaL gene. Mutants lacking PsaI or PsaL were generated by interpos...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Schluchter WM,Shen G,Zhao J,Bryant DA

    更新日期:1996-07-01 00:00:00

  • Photochemical linkage of antibodies to silicon chips.

    abstract::Antibodies and antigen binding fragments thereof were photochemically immobilized on surface-modified silicon chips of 5 x 5 mm size. Silicon surface-grafted diazirines and benzophenones formed covalent bonds with the immunoreagents on light activation. Photolithographic immobilization of monoclonal antibodies in aque...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Sundarababu G,Gao H,Sigrist H

    更新日期:1995-06-01 00:00:00

  • Effect of oxygen on photoautotrophic and heterotrophic growth of Chlamydomonas reinhardtii in an anoxic atmosphere.

    abstract::Photoautotrophic growth of Chlamydomonas reinhardtii was shown to be independent of the presence of atmospheric oxygen. Under constant light and photoautotrophic conditions, C. reinhardtii grew equally well in either air or 367 PPM CO2-in-He. During 12-h light-dark cycles, the cells in air grew substantially faster th...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Graves DA,Spradlin GM,Greenbaum E

    更新日期:1990-09-01 00:00:00

  • Effect of Light Environment on Growth and Phenylpropanoids of Yarrow (Achillea collina cv. SPAK) Grown in the Alps.

    abstract::A 2-year field study on the effect of different light environments, obtained by using cladding materials (polyethylene films and shade net) able to cut off specific regions of the photosynthetically active radiation and ultraviolet wavebands, on the growth and phenylpropanoids content of Achillea collina grown in the ...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Giorgi A,Manzo A,Vagge I,Panseri S

    更新日期:2014-01-01 00:00:00