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


: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 Alps was conducted. Overall the plant growth was strongly enhanced in the second growing season irrespective of radiation treatment. The light environment did not affect total biomass accumulation, but only carbon allocation to leaves or inflorescences. Indeed the phenylpropanoid levels in inflorescences appeared to be more sensitive to the light environment than leaves as the latter showed high constitutive amounts of these compounds. However, the use of polyethylene films improved to some extent the content of caffeic acid derivatives in leaves. Our results showed that yarrow production, in the alpine situation considered, is influenced by the growing season and the light environment, providing a basis to optimize its quality, depending on the concentration of bioactive compounds, by means of proper agronomic practices.


Photochem Photobiol


Giorgi A,Manzo A,Vagge I,Panseri S




Has Abstract


2014-01-01 00:00:00












  • Excited state processes in 1-deazariboflavin studied by ultrafast fluorescence kinetics.

    abstract::The photochemical reactions of the 1-deaza derivative of riboflavin (RF) have been studied by sub-ps time-resolved fluorescence spectroscopy. A potential effect of the solvent polarity and hydrogen bonding capability on the excited state (ES) dynamics was tested by measuring 1-deaza RF in water and, after acetylation ...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Slavov C,Mansurova M,Holzwarth AR,Gärtner W

    更新日期:2010-01-01 00:00:00

  • Chitosan nanoparticles for antimicrobial photodynamic inactivation: characterization and in vitro investigation.

    abstract::The growing resistance to antibiotics has rendered antimicrobial photodynamic inactivation (PDI) an attractive alternative treatment modality for infectious diseases. Chitosan (CS) was shown to further potentiate the PDI effect of photosensitizers and was therefore used in this study to investigate its ability to pote...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Chen CP,Chen CT,Tsai T

    更新日期:2012-05-01 00:00:00

  • Synthesis, structure and photophysical properties of ferrocenyl or mixed sandwich cobaltocenyl ester linked meso-tetratolylporphyrin dyads.

    abstract::We report here the design and synthesis of porphyrin-metallocene dyads consisting of a metallocene [either ferrocene or mixed sandwich η(5)-[C5H4(COOH)]Co(η(4)-C4Ph4) connected via an ester linkage at meso phenyl position of either free-base or zinc porphyrin. All these dyad systems were characterized by various spect...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Gokulnath S,Achary BS,Kumar CK,Trivedi R,Sridhar B,Giribabu L

    更新日期:2015-01-01 00:00:00

  • Wavelength dependence of DNA incision by a human ultraviolet endonuclease.

    abstract::The wavelength dependence of an ultraviolet irradiation of the DNA substrate for a human endonuclease was determined. Sites of DNA incision for all UVB and UVC wavelengths examined were at cytosines which were neither cyclobutane pyrimidine dimers nor 6-4'-(pyrimidin-2-one)pyrimidines. The optimal wavelengths for form...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Gallagher PE,Weiss RB,Brent TP,Duker NJ

    更新日期:1989-03-01 00:00:00

  • Radical cation generation from singlet and triplet excited states of all-trans-lycopene in chloroform.

    abstract::On direct photoexcitation, subpicosecond time-resolved absorption spectroscopy revealed that the 1B(u)-type singlet excited state of all-trans-lycopene in chloroform was about seven times more efficient than all-trans-beta-carotene in generating the radical cation. The time constant of radical cation generation from t...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Han RM,Wu YS,Feng J,Ai XC,Zhang JP,Skibsted LH

    更新日期:2004-09-01 00:00:00

  • Retinal conformation and dynamics in activation of rhodopsin illuminated by solid-state H NMR spectroscopy.

    abstract::Solid-state NMR spectroscopy gives a powerful avenue for investigating G protein-coupled receptors and other integral membrane proteins in a native-like environment. This article reviews the use of solid-state (2)H NMR to study the retinal cofactor of rhodopsin in the dark state as well as the meta I and meta II photo...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章,评审


    authors: Brown MF,Martínez-Mayorga K,Nakanishi K,Salgado GF,Struts AV

    更新日期:2009-03-01 00:00:00

  • Fluence Rate Determines PDT Efficiency in Breast Cancer Cells Displaying Different GSH Levels.

    abstract::Photodynamic therapy (PDT) appears as a promising alternative in the treatment of breast cancer since it can be highly effective in curing cancer while preserving normal tissue. However, predicting outcomes in PDT still constitutes a great challenge. One of the parameters that are usually empirically determined is the...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Dos Santos AF,de Almeida DRQ,Terra LF,Wailemann RAM,Gomes VM,Arini GS,Ravagnani FG,Baptista MS,Labriola L

    更新日期:2020-05-01 00:00:00

  • In vitro study of the photocytotoxicity of some hypericin analogs on different cell lines.

    abstract::In the present study, hypericin analogs with an increased hydrophilic character were synthesized. As chemical modifications alter the lipophilicity/hydrophilicity balance together with the photophysical/chemical background of the molecule the influence of these structural changes on the cellular uptake, retention and ...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Delaey EM,Obermuëller R,Zupkó I,De Vos D,Falk H,de Witte PA

    更新日期:2001-08-01 00:00:00

  • Skin cancer risks avoided by the Montreal Protocol--worldwide modeling integrating coupled climate-chemistry models with a risk model for UV.

    abstract::The assessment model for ultraviolet radiation and risk "AMOUR" is applied to output from two chemistry-climate models (CCMs). Results from the UK Chemistry and Aerosols CCM are used to quantify the worldwide skin cancer risk avoided by the Montreal Protocol and its amendments: by the year 2030, two million cases of s...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: van Dijk A,Slaper H,den Outer PN,Morgenstern O,Braesicke P,Pyle JA,Garny H,Stenke A,Dameris M,Kazantzidis A,Tourpali K,Bais AF

    更新日期:2013-01-01 00:00:00

  • Reduction in DNA synthesis during two-photon microscopy of intrinsic reduced nicotinamide adenine dinucleotide fluorescence.

    abstract::Two-photon laser scanning microscopy (TPLSM) of endogenous reduced nicotinamide adenine dinucleotide (NAD(P)H) provides important information regarding the cellular metabolic state. When imaging the punctate mitochondrial fluorescence originating from NAD(P)H in a rat basophilic leukemia (RBL) cell at low laser powers...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Nichols MG,Barth EE,Nichols JA

    更新日期:2005-03-01 00:00:00

  • Rational Design, Synthesis and Evaluation of Indole Nitrogen Hybrids as Photosystem II Inhibitors.

    abstract::We report the synthesis of twelve indole derivatives bearing nitro or amide groups via Fischer indole methodology followed by reduction/acetylation and amidation reactions. After thorough characterization, these indoles were subjected to a number of studies in order to evaluate their bioactive potential as photosynthe...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: de Souza JM,Fazolo BR,Lacerda JWF,Moura MS,Dos Santos ACR,de Vasconcelos LG,de Sousa Junior PT,Dall'Oglio EL,Ali A,Sampaio OM,Vieira LCC

    更新日期:2020-11-01 00:00:00

  • Lovastatin potentiates the photocytotoxic effect of photofrin II delivered to HT29 human colonic adenocarcinoma cells by low density lipoprotein.

    abstract::A 24 h preculture of HT29-18 human colonic adenocarcinoma cells with the sterol synthesis inhibitor lovastatin at concentrations of 0.1-0.5 microM markedly increased the photocytotoxic effect of photofrin II delivered to cells by low density lipoproteins. Under the same conditions, LDL binding and photofrin II (PII) u...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Biade S,Mazière JC,Mora L,Santus R,Mazière C,Auclair M,Morlière P,Dubertret L

    更新日期:1993-02-01 00:00:00

  • In vivo near-infrared Raman spectroscopy: demonstration of feasibility during clinical gastrointestinal endoscopy.

    abstract::Raman spectroscopy (RS) has potential for disease classification within the gastrointestinal tract (GI). A near-infrared (NIR) fiber-optic RS system has been developed previously. This study reports the first in vivo Raman spectra of human gastrointestinal tissues measured during routine clinical endoscopy. This was a...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Shim MG,Song LM,Marcon NE,Wilson BC

    更新日期:2000-07-01 00:00:00

  • Magnetic resonance imaging evaluation of photodynamic therapy-induced hemorrhagic necrosis in the murine M1 tumor model.

    abstract::Proton magnetic resonance imaging (MRI) and histological methods were used to evaluate photodynamic therapy (PDT)-induced hemorrhagic necrosis in the murine M1 tumor within 72 h of treatment of male DBA/2 mice. The effects of three photosensitizing drugs were investigated: Photofrin (n = 4), Zn (II) phthalocyanine (n ...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Winsborrow BG,Grondey H,Savoie H,Fyfe CA,Dolphin D

    更新日期:1997-12-01 00:00:00

  • Quantum yields and kinetics of the firefly bioluminescence reaction of beetle luciferases.

    abstract::Quantum yields of firefly bioluminescence reactions were determined for beetle luciferases from the three main families of luminous beetles emitting different bioluminescence colors. Quantum yield (QY) was significantly correlated with luminescence spectrum. The green light-emitting luciferase of the Brazilian click b...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Niwa K,Ichino Y,Kumata S,Nakajima Y,Hiraishi Y,Kato D,Viviani VR,Ohmiya Y

    更新日期:2010-09-01 00:00:00

  • Photostability of Terbinafine Under UVA Irradiation: The Effect of UV Absorbers.

    abstract::The photostability of drugs administered topically on unprotected skin is a complex phenomenon that could be connected with the loss of activity or, rather rarely, the occurrence of toxic degradation products. In this study, an in-depth investigation of the photostability of terbinafine, in both solutions and formulat...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Kryczyk-Poprawa A,Żmudzki P,Koczurkiewicz P,Pękala E,Hubicka U

    更新日期:2019-07-01 00:00:00

  • Characterization of the Blue-Light-Activated Adenylyl Cyclase mPAC by Flash Photolysis and FTIR Spectroscopy.

    abstract::The recently discovered photo-activated adenylyl cyclase (mPAC from Microcoleus chthonoplastes) is the first PAC that owes a light-, oxygen- and voltage-sensitive (LOV) domain for blue-light sensing. The photoreaction of the mPAC receptor was studied by time-resolved UV/vis and light-induced Fourier transform infrared...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Kerruth S,Langner P,Raffelberg S,Gärtner W,Heberle J

    更新日期:2017-05-01 00:00:00

  • Supramolecular cationic tetraruthenated porphyrin and light-induced decomposition of 2'-deoxyguanosine predominantly via a singlet oxygen-mediated mechanism.

    abstract::The tetraruthenated porphyrin, mu-[meso-5,10,15,20-tetra(pyridyl)porphyrin]tetrakis[bis-(bipyridine) chloride ruthenium(II)] (TRP) is a supramolecular cationic species. The aim of the present investigation was to evaluate the photodynamic properties of TRP and Zn-TRP to damage DNA with emphasis on the mechanistic aspe...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Ravanat JL,Cadet J,Araki K,Toma HE,Medeiros MH,Mascio PD

    更新日期:1998-11-01 00:00:00

  • Photodynamic effects of zinc(II) phthalocyanine-loaded polymeric micelles in human nasopharynx KB carcinoma cells.

    abstract::A major difficulty in photodynamic therapy is the poor solubility of the photosensitizer (PS) under physiological conditions which correlates with low bioavailability. PS aggregation leads to a decrease in the photodynamic efficiency and a more limited activity in vitro and in vivo. To improve the aqueous solubility a...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: García Vior MC,Marino J,Roguin LP,Sosnik A,Awruch J

    更新日期:2013-03-01 00:00:00

  • Solar UVB dosimetry by amplification of short and long segments in phage lambda DNA.

    abstract::DNA UVB dosimeters, consisting of minidots of dried bacteriophage DNA placed on a UV-transparent polymer film, were analyzed by polymerase chain reactions (PCR). Ultraviolet-B dosimetry obtained with amplification of phage lambda DNA of segments of 1.08 kilobase pairs (kbp) and 2.24 kbp was compared with that obtained...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Yoshida H,Regan JD

    更新日期:1997-11-01 00:00:00

  • Influence of human serum albumin on photodegradation of folic acid in solution.

    abstract::It has been proposed that photodegradation of folates may be the reason for the pigmentation of races living under high fluence rates of ultraviolet radiation. The photodegradation of folic acid (FA) induced by ultraviolet-A (UV-A) radiation, in solution and in the presence of human serum albumin (HSA), was studied wi...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Vorobey P,Steindal AE,Off MK,Vorobey A,Moan J

    更新日期:2006-05-01 00:00:00

  • The laser two-photon photolysis of liquid carbon tetrachloride.

    abstract::The two-photon photolysis of liquid CCl4 with 25 ps pulses of 266 nm light has been studied and compared with similar studies with high energy radiation. Both neutral and ionic species are produced from excited states and ionization. The emphasis of the study is on the ionic processes, while some data related to excit...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Zhang G,Thomas JK

    更新日期:2006-01-01 00:00:00

  • Theoretical Insight into the Emission Properties of the Luciferin and Oxyluciferin of Latia.

    abstract::Latia neritoides is a small limpet-like snail that produces a bright green bioluminescence (BL) via a unique light-emitting system. The process, mechanism, and even light emitter of its light emission remain unknown, although this BL has been known for decades. Unlike the other BL systems, neither the luciferin (Luc) ...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Yu M,Ohmiya Y,Naumov P,Liu YJ

    更新日期:2018-05-01 00:00:00

  • Enhanced response to daunomycin of normal, tumor and metastatic cell lines via drug photoactivation.

    abstract::We have compared the cytotoxicity of daunomycin in vitro to highly differentiated normal epithelial cells (Fisher rat thyroid cells, FRTL-5) and to two neoplastic cell lines, a thyroid carcinoma (TK-6) and its lung metastasis (MPTK-6). Whereas the cell lines are equally sensitive to the drug in the dark, if irradiated...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Andreoni A,Colasanti A,Kisslinger A,Mastrocinque M,Portella G,Riccio P,Roberti G

    更新日期:1993-05-01 00:00:00

  • Thermal effectiveness of different IR radiators employed in rheumatoid hand therapy as assessed by thermovisual examination.

    abstract::We conducted a thermovisual comparison of mean hand surface temperature changes upon local heating with two different IR sources. Sixty-six patients with rheumatoid arthritis (47 women and 19 men; average age, 56.1 ± 8.6 years) were subjected to topical heat therapy for one hand with either the standard IR radiator (S...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Rutkowski R,Straburzyńska-Lupa A,Korman P,Romanowski W,Gizińska M

    更新日期:2011-11-01 00:00:00

  • Effects of UVR and UVR-induced cytokines on production of extracellular matrix proteins and proteases by dermal fibroblasts cultured in collagen gels%.

    abstract::Synthesis of extracellular matrix (ECM) proteins and their degradation by matrix metalloproteinases (MMP) are part of the dermal remodeling resulting from chronic exposure of skin to ultraviolet radiation (UVR). We have compared two alternative mechanisms for these responses, namely, a direct mechanism in which UV-B o...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Kossodo S,Wong WR,Simon G,Kochevar IE

    更新日期:2004-01-01 00:00:00

  • Chlorin e6 derivative radachlorin mainly accumulates in mitochondria, lysosome and endoplasmic reticulum and shows high affinity toward tumors in nude mice in photodynamic therapy.

    abstract::The efficacy of photodynamic therapy (PDT) depends upon the amount of photosensitizer accumulated in the malignant tissues. Radachlorin is a popular photosensitizer used in photodynamic therapy to treat various types of cancer. In this study, we have studied the main organelles responsible for the accumulation of rada...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Biswas R,Moon JH,Ahn JC

    更新日期:2014-09-01 00:00:00

  • A Comparison of Solar Ultraviolet Radiation Exposure in Urban Canyons in Venice, Italy and Johannesburg, South Africa.

    abstract::Urban environments can have high-risk spaces that can provide excess personal sun exposure, such as urban or street canyons, and the spaces between buildings, among others. In these urban spaces, sun exposure can be high or low depending on several factors. Polysulphone film (PSF) was used to assess possible daily sol...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Wright CY,du Preez DJ,Martincigh BS,Allen MW,Millar DA,Wernecke B,Blesic S

    更新日期:2020-09-01 00:00:00

  • On the Formation of Thymine Photodimers in Thymine Single Strands and Calf Thymus DNA.

    abstract::Solar light leads to thymine dimers that are mutagenic and primary cause of skin cancer. Here, we report absorption and synchrotron radiation circular dichroism (CD) spectra of Tn single strands with different number n of bases (n = 2-7, 10, 11) recorded after various 254 nm irradiation times. From a principal compone...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Baggesen LM,Hoffmann SV,Nielsen SB

    更新日期:2014-01-01 00:00:00

  • The influence of Ala243 (Gly247), Arg215 and Thr226 (Asn230) on the bioluminescence spectra and pH-sensitivity of railroad worm, click beetle and firefly luciferases.

    abstract::Among beetle luciferases, the pH-sensitive firefly luciferases have been studied extensively. Much less is known about pH-insensitive luciferases, which include click beetle and railroad worm luciferases. Previously, we found that the residues R215 and T226 (N230) are important for green light emission. Here we show t...

    journal_title:Photochemistry and photobiology

    pub_type: 杂志文章


    authors: Viviani VR,Uchida A,Viviani W,Ohmiya Y

    更新日期:2002-11-01 00:00:00