Buscar
Mostrando ítems 1-10 de 21
Characterization of Mg-dechelating substance in senescent and pre-senescent Arabidopsis thaliana leaves
(Springer, 2011-01)
The removal of Mg2+ is an important step in the chlorophyll degradation pathway and extracts from senescent and presenescent Arabidopsis thaliana leaves were analyzed for Mg-dechelatase activity, using chlorophyllin, an ...
Effects of ethylene, cytokinin, and physical treatments on BoPaO gene expression of harvested broccoli.
(John Wiley & Sons Ltd, 2011-07-06)
BACKGROUND: Broccoli is a highly perishable vegetable that shows enhanced postharvest senescence and intense de‐greening caused by chlorophyll degradation. One of the key steps of chlorophyll catabolism is the opening of ...
Changes in planktivory and herbivory regimes in a shallow South American lake (Lake Blanca Chica, Argentina) over the last 250 years
(Multidisciplinary Digital Publishing Institute, 2020-02)
Shallow lakes are vulnerable ecosystems impacted by human activities and climate change. The Cladocera occupy a central role in food webs and are an excellent paleoecological indicator of food web structure and trophic ...
Photobiological characteristics of chlorophyll a derivatives as microbial PDT agents
(Royal Society of Chemistry - RSCCambridge, 2014-08)
Chlorin-e6 (chl-e6) and a hydrogenated derivative (chl-e6H) were semi-synthesized, and their photophysical properties and photodynamic activity against Escherichia coli, Staphylococcus aureus and Candida albicans evaluated. ...
Dynamics of pigment degradation by the copepodite stage of Pseudodiaptomus euryhalinus feeding of Tetraselmis suecica
(Marine Biology, 2002)
Short-term (3 h) changes in concentration of chlorophylls and their derivatives in stage V Pseudodiaptomus euryhalinus and their fecal material were followed by HPLC during a 24 h experiment. Copepodites were fed with the ...
A study of chlorophyll-like and phycobilin pigments in the C endosymbiont of the apple- snail Pomacea canaliculata
(Instituto de Histología y Embriología, 2012-08)
Pigments present in the brown-greenish C morph of an intracellular endosymbiont of Pomacea canaliculata were investigated. Acetone extracts of the endosymbiotic corpuscles showed an absorption spectrum similar to that of ...
Extra-plastidial degradation of chlorophyll and photosystem I in tobacco leaves involving "Senescence-associated- vacuoles"
(Wiley Blackwell Publishing, Inc, 2019-04-15)
Chlorophyll (Chl) loss is the main visible symptom of senescence in leaves. The initial steps of Chl degradation operate within the chloroplast, but the observation that ‘senescence-associated vacuoles’ (SAVs) contain Chl ...