Results 61 to 70 of about 402,938 (213)

Identification of a Chlorophyll Dephytylase Involved in Chlorophyll Turnover in Arabidopsis [PDF]

open access: yesThe Plant Cell, 2016
Chlorophyll turns over in green organs during photosystem repair and is salvaged via de- and rephytylation, but the enzyme involved in dephytylation is unknown. We have identified an Arabidopsis thaliana thylakoid protein with a putative hydrolase domain that can dephytylate chlorophyll in vitro and in vivo.
Yao-Pin Lin   +2 more
openaire   +2 more sources

Effect of light quality on growth, protein content and fatty acid profile of Chaetoceros muelleri [PDF]

open access: yesبوم‌شناسی آبزیان, 2021
In this study, some of the growth parameters and biochemical composition of Chaetoceros muelleri were investigated under blue, white, and red light. Different treatments of lights applied to Chaetoceros muelleri cultures (salinity 25 ppt, temperature 23 ±
Masoumeh Ostadi Ghaziani   +3 more
doaj  

Analysis of chlorophyll fluorescence reveals stage specific patterns of chloroplast-containing cells during Arabidopsis embryogenesis [PDF]

open access: yes, 2010
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000100012&lng=es&nrm=isoThe basic body plan of a plant is established early in embryogenesis when cells differentiate, giving rise to the apical and basal regions of the embryo.
Meisel, Lee   +2 more
core   +2 more sources

Strong enhancement of chlorophyll a concentration by a weak typhoon

open access: yes, 2010
Recent studies demonstrate that chlorophyll a (chl a) concentrations in the surface ocean can be significantly enhanced due to typhoons. The present study investigated chl a concentrations in the middle of the South China Sea (SCS) from 1997-2007.
Fu, Yun-Fei   +4 more
core   +1 more source

Extração e purificação de clorofila a, da alga Spirulina maxima: um experimento para os cursos de química Extraction and purification of chlorophyll a isolated from Spirulina maxima: an experiment for the chemistry courses

open access: yesQuímica Nova, 2009
This work describes a simple and economical experiment for the extraction and purification of chlorophyll a from Spirulina maxima. Extraction and purification of natural compounds can be considered one of the most illustrative experiments that can be ...
Ana Paula Jecks Maestrin   +4 more
doaj   +1 more source

On a method of determination of chlorophyll in cells of algae collected on a membrane filter. [Translation from: Trudy Instituta Biologii Vnutrennykh Vodnany 11(14), 198-202, 1966.] [PDF]

open access: yes, 1966
The original method, proposed by Yentsch (1957), of determination of chlorophyll directly in the cells, attracts attention by its simplicity. In order to measure the content of chlorophyll by this method, a determined volume of suspension of algae is ...
Mokeeva, N.P., Pyrina, I.L.
core  

The Influence of X-ray Radiation on the Morphological, Biochemical, and Molecular Changes in Copiapoa tenuissima Seedlings

open access: yesAgronomy
Cactaceae are a significant group of ornamental plants in the horticultural market. In the present study, X-rays were used for the first time to induce mutational changes in the cactus Copiapoa tenuissima.
Piotr Licznerski   +4 more
doaj   +1 more source

Desiccation and recovery of periphyton biomass and density in a subtropical lentic ecosystem - doi: 10.4025/actascibiolsci.v35i3.14022

open access: yesActa Scientiarum: Biological Sciences, 2013
This study assessed the desiccation effects on biomass and algal density of periphyton in a subtropical lentic ecosystem. This experiment was conducted with only one in situ experimental desiccation event for 15 hours in a mature periphytic community ...
Vanessa Majewski Algarte   +2 more
doaj   +1 more source

A Comparison of the Pac-X Trans-Pacific Wave Glider Data and Satellite Data (MODIS, Aquarius, TRMM and VIIRS) [PDF]

open access: yes, 2014
Tracy A. Villareal, Marine Science Institute and Department of Marine Science, The University of Texas at Austin, Port Aransas, Texas, United States of AmericaCara Wilson, Environmental Research Division, Southwest Fisheries Science Center, National ...
Villareal, Tracy A., Wilson, Cara
core   +3 more sources

Modelling Ocean Colour Derived Chlorophyll-a [PDF]

open access: yesBiogeosciences, 2017
Abstract. This article provides a proof-of-concept for using a biogeochemical/ecosystem/optical model with radiative transfer component as a laboratory to explore aspects of ocean colour. We focus here on the satellite ocean colour Chlorophyll-a (Chl-a) product provided by the often-used blue/green reflectance ratio algorithm. The model produces output
S. Dutkiewicz   +3 more
openaire   +5 more sources

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