Association between radionuclides ( 210 Po and 210 Pb) and antioxidant enzymes in oak ( Quercus coccifera ) and mastic tree ( Pistacia lentiscus )

2017 ◽  
Vol 174 ◽  
pp. 71-77
Author(s):  
A. Uğur Görgün ◽  
E. Aslan ◽  
M. Kül ◽  
S. İlhan ◽  
G. Dimlioğlu ◽  
...  
Keyword(s):  
Antioxidant Enzymes ◽  
Pistacia Lentiscus ◽  
Quercus Coccifera

Biomass of understory species of Pinus halepensis Mill. forests in the Kassandra Peninsula - Chalkidiki

1998 ◽  
Vol 63 ◽  
Author(s):  
P. Smiris ◽  
F. Maris ◽  
K. Vitoris ◽  
N. Stamou ◽  
P. Ganatsas
Keyword(s):  
Moisture Content ◽  
Aboveground Biomass ◽  
Quercus Ilex ◽  
Pinus Halepensis ◽  
Biomass Estimation ◽  
Regression Equations ◽  
Pistacia Lentiscus ◽  
Quercus Coccifera ◽  
Understory Species ◽  
Cistus Incanus

This  study deals with the biomass estimation of the understory species of Pinus halepensis    forests in the Kassandra peninsula, Chalkidiki (North Greece). These  species are: Quercus    coccifera, Quercus ilex, Phillyrea media, Pistacia lentiscus, Arbutus  unedo, Erica arborea, Erica    manipuliflora, Smilax aspera, Cistus incanus, Cistus monspeliensis,  Fraxinus ornus. A sample of    30 shrubs per species was taken and the dry and fresh weights and the  moisture content of    every component of each species were measured, all of which were processed  for aboveground    biomass data. Then several regression equations were examined to determine  the key words.

scholarly journals Evaluación de la supervivencia y del crecimiento en la reforestación del proyecto piloto de Albatera tras 12 años

2016 ◽  
Vol 3 (2) ◽  
pp. 40-49
Author(s):  
John Molina ◽  
V. Ramón Vallejo ◽  
Alberto Villagrosa
Keyword(s):  
Pinus Halepensis ◽  
Pistacia Lentiscus ◽  
Ceratonia Siliqua ◽  
Quercus Coccifera ◽  
Juniperus Oxycedrus ◽  
Tetraclinis Articulata ◽  
Olea Europea ◽  
Chamaerops Humilis ◽  
Sobre Todo

El presente trabajo consiste en el seguimiento y evaluación de los resultados de la restauración forestal ecológica realizada en la cuenca de Albatera durante los años 2003 y 2004, poniendo énfasis en la supervivencia después del verano de 2014 comparada con la supervivencia registrada en los años anteriores.Para la toma de los datos ha sido necesario desplazarse a la cuenca durante 20 días entre los meses de febrero y marzo del 2015 para recoger datos de supervivencia y tamaño de las diez especies estudiadas: tres especies arbóreas (Pinus halepensis, Tetraclinis articulata, Ceratonia siliqua) y siete arbustivas (Pistacia lentiscus, Quercus coccifera, Rhamnus lycioides, Ephedra fragilis, Chamaerops humilis, Juniperus oxycedrus y Olea europea ssp sylvestris). Además fue necesario realizar otras tareas como la revisión de los datos históricos de las repoblaciones realizadas como del clima de la zona.Los resultados muestran mayor supervivencia y crecimiento de los plantones plantados en la solana sobre los de umbría, y sobre todo sobre los ubicados en la unidad de terrazas forestales. Además se encontró una mayor supervivencia de los especímenes plantados en la campaña del año 2004 respecto a los introducidos en la campaña del 2003.

scholarly journals Defense of Host Plants against Orgyia trigotephras in Northeast of Tunisia

2020 ◽  
Vol 15 (2) ◽  
pp. 81-89
Author(s):  
Olfa Ezzine ◽  
◽  
Hnia Chograni ◽  
Samir Dhahri ◽  
Mohamed Lahbib Ben Jamâa ◽  
...  
Keyword(s):  
Essential Oils ◽  
Host Plants ◽  
Pistacia Lentiscus ◽  
Quercus Coccifera ◽  
Insect Larvae ◽  
Primary Metabolites ◽  
Potassium Sodium ◽  
Nitrogen Levels ◽  
North East ◽  
Low Concentrations

The egg-larval stage of Orgyia trigotephras were observed in shrubs maquis of Jebel Abderrahmane in north-east Tunisia, mainly on Quercus coccifera and Pistacia lentiscus, while only eggs were noticed on Phillyrea media. This kind of observation suggest us to study tree defense against O. trigotephras which will be explored by chemical analysis of P. lentiscus, Q. coccifera and P. media. Two types of analyses were the focus of this study to understand plant defense (i) primary metabolites and (ii) components of essential oils of these tested plants. Kjeldhal method was used for nitrogen and Mrssorr method for potassium, sodium and phosphorus extraction. Essential oils were extracted with the hexane solvent; chemical composition was determined using (GC/MS) methods. Oil compounds were identified by comparison to their retention time. Results of mineral extraction showed that percentage of potassium, sodium, phosphorus and nitrogen were more important in P. lentiscus and P. media than in Q. coccifera. Five major compounds were identified from essential oils of Q. coccifera, four from P. media and four from P. lentiscus. Nitrogen, which is a source of protein for insects, is produced in low concentrations in the foliage, decreasing nitrogen levels strategy for defending the plant against insect larvae. The absence of monoterpens in the foliage at P. media could explain the choice of larvae not to feed upon this host which probably confers resistance against this defoliator.

Effects of Antioxidant Supplementation and Exercise Training on Erythrocyte Antioxidant Enzymes

2006 ◽  
Vol 76 (5) ◽  
pp. 324-331 ◽  
Author(s):  
Marsh ◽  
Laursen ◽  
Coombes
Keyword(s):  
Antioxidant Enzymes ◽  
Exercise Training ◽  
Endurance Training ◽  
Young Male ◽  
Antioxidant Defenses ◽  
Antioxidant Enzyme Activities ◽  
Antioxidant Supplementation ◽  
Male Wistar Rats ◽  
Exercise Induced ◽  
Antioxidant Supplements

Erythrocytes transport oxygen to tissues and exercise-induced oxidative stress increases erythrocyte damage and turnover. Increased use of antioxidant supplements may alter protective erythrocyte antioxidant mechanisms during training. Aim of study: To examine the effects of antioxidant supplementation (α-lipoic acid and α-tocopherol) and/or endurance training on the antioxidant defenses of erythrocytes. Methods: Young male Wistar rats were assigned to (1) sedentary; (2) sedentary and antioxidant-supplemented; (3) endurance-trained; or (4) endurance-trained and antioxidant-supplemented groups for 14 weeks. Erythrocyte superoxide dismutase (SOD), glutathione peroxidase (GPX), and catalase (CAT) activities, and plasma malondialdehyde (MDA) were then measured. Results: Antioxidant supplementation had no significant effect (p > 0.05) on activities of antioxidant enzymes in sedentary animals. Similarly, endurance training alone also had no effect (p > 0.05). GPX (125.9 ± 2.8 vs. 121.5 ± 3.0 U.gHb–1, p < 0.05) and CAT (6.1 ± 0.2 vs. 5.6 ± 0.2 U.mgHb–1, p < 0.05) activities were increased in supplemented trained animals compared to non-supplemented sedentary animals whereas SOD (61.8 ± 4.3 vs. 52.0 ± 5.2 U.mgHb–1, p < 0.05) activity was decreased. Plasma MDA was not different among groups (p > 0.05). Conclusions: In a rat model, the combination of exercise training and antioxidant supplementation increased antioxidant enzyme activities (GPX, CAT) compared with each individual intervention.

Conjugated Linoleic Acid Causes a Marked Increase in Liver α-Tocopherol and Liver α-Tocopherol Transfer Protein in C57BL/6 J Mice

2010 ◽  
Vol 80 (1) ◽  
pp. 65-73 ◽  
Author(s):  
Pei-Min Chao ◽  
Wan-Hsuan Chen ◽  
Chun-Huei Liao ◽  
Huey-Mei Shaw
Keyword(s):  
Antioxidant Enzymes ◽  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Thiobarbituric Acid ◽  
Control Group ◽  
Thiobarbituric Acid Reactive Substances ◽  
Control Groups ◽  
Protein Levels ◽  
Transfer Protein ◽  
And Control

Conjugated linoleic acid (CLA) is a collective term for the positional and geometric isomers of a conjugated diene of linoleic acid (C18:2, n-6). The aims of the present study were to evaluate whether levels of hepatic α-tocopherol, α-tocopherol transfer protein (α-TTP), and antioxidant enzymes in mice were affected by a CLA-supplemented diet. C57BL/6 J mice were divided into the CLA and control groups, which were fed, respectively, a 5 % fat diet with or without 1 g/100 g of CLA (1:1 mixture of cis-9, trans-11 and trans-10, cis-12) for four weeks. α-Tocopherol levels in plasma and liver were significantly higher in the CLA group than in the control group. Liver α-TTP levels were also significantly increased in the CLA group, the α-TTP/β-actin ratio being 2.5-fold higher than that in control mice (p<0.01). Thiobarbituric acid-reactive substances were significantly decreased in the CLA group (p<0.01). There were no significant differences between the two groups in levels of three antioxidant enzymes (superoxide dismutase, glutathione peroxidase, and catalase). The accumulation of liver α-tocopherol seen with the CLA diet can be attributed to the antioxidant potential of CLA and the ability of α-TTP induction. The lack of changes in antioxidant enzyme protein levels and the reduced lipid peroxidation in the liver of CLA mice are due to α-tocopherol accumulation.

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