scholarly journals Pulsing on the postharvest physiology of two cultivars of Polianthes tuberosa L.

2021 ◽  
Vol 27 (1) ◽  
pp. 60-67
Author(s):  
Sandy Lizbeth Fernando-Santos ◽  
Gloria Alicia Pérez-Arias ◽  
Iran Alia-Tejacal ◽  
Clara Pelayo Zaldívar ◽  
Víctor López-Martínez ◽  
...  
Keyword(s):  
Superoxide Dismutase ◽  
Water Uptake ◽  
Catalase Activity ◽  
Management Strategies ◽  
Visual Quality ◽  
Fresh Weight ◽  
Total Sugars ◽  
Postharvest Physiology ◽  
Conservation And Management

Abstract The effect of pulsing on the postharvest behavior of cut tuberose was evaluated in the cultivars ‘Mexican Single’ and ‘The Pearl’. Spikes of both were harvested with 1 or 2 of their basal buds open and treated with 20% sucrose and 200 mg of hydroxyquinoline citrate (sucrose + HQC). Pulsing increased the relative fresh weight of spikes, although water uptake in ‘The Pearl’ was greater regardless. After 5 days, visual quality was scored as ‘excellent’ and ‘good’ in ‘Mexican Single’ and ‘The Pearl’, respectively, and the greatest number of open and of senescent flowers occurred in the latter independent of pulsing. CIE L*C*h values and total sugars increased more noticeably among pulsed florets in ‘The Pearl’, whereas higher rates of respiration occurred in the unpulsed spikes of ‘Mexican Single’. Catalase activity was constant in ‘The Pearl’, although superoxide dismutase and peroxidase activities were higher and similar to, respectively, those of ‘Mexican Single’. These differences in physical, physiological and enzymatic behavior are important to consider when developing postharvest conservation and management strategies that are specific for each variety.

scholarly journals Effect of 8-Hydroxyquinoline Citrate, Sucrose and Peroxidase Inhibitors on Vase Life of Lisianthus (EUSTOMA GRANDIFLORUM L.) Cut Flowers

2014 ◽  
Vol 22 (1) ◽  
pp. 41-47 ◽  
Author(s):  
Kamaladin Sharifzadeh ◽  
Moazzam Hassanpour Asil ◽  
Zeynab Roein ◽  
Muhammad Sharifzadeh
Keyword(s):  
Weight Loss ◽  
Superoxide Dismutase ◽  
Water Uptake ◽  
The Other ◽  
Life Extension ◽  
Vase Life ◽  
Anthocyanin Content ◽  
Cut Flowers ◽  
Fresh Weight ◽  
Eustoma Grandiflorum

AbstractCut lisianthus flowers have a short vase life, possibly due to blockage of xylem vessels. The effect of 8-hydroxyquinoline citrate, sucrose and peroxidase inhibitors on delaying senescence and extending vase life of cut lisianthus flowers was tested. The peroxidase inhibitors used in this experiment were catechol (CH) (5, 10, 15 mM) and p-phenylenediamine (PD) (5, 10, 15 mM). All vase solutions contained 200 mg-dm-3 8-hydroxyquinoline citrate (8-HQC) and 3% sucrose. 10 mM CH treatment was the most effective for vase life extension (13.3 days), increasing water uptake, and delaying fresh weight loss. The vase solution containing 10 mM CH significantly increased superoxide dismutase (SOD) and decreased peroxidase (POD) activities. Similarly, 10 mM PD increased anthocyanin content more than the other treat–ments. Protein degradation was significantly delayed by application of 5 mM PD. The malondialdehyde (MDA) accumulation was reduced when CH at 5 mM and PD in 5 and 15 mM were added to the vase solution. Results indicated that peroxidase inhibitors in combination with 8-HQC and sucrose increase vase life of lisianthus by improving water uptake and delaying fresh weight loss.

scholarly journals Activity of antioxidant enzymes in serum of rats under conditions of carrageenan-induced joint inflammation and prophylactic administration of chondroitin sulfate

2020 ◽  
Vol 81 (2) ◽  
pp. 46-49
Author(s):  
L. Kot ◽  
L. Yurchenko ◽  
A. Shepeleva ◽  
K. Dvorshchenko
Keyword(s):  
Superoxide Dismutase ◽  
Blood Serum ◽  
Chondroitin Sulfate ◽  
Catalase Activity ◽  
Therapeutic Dose ◽  
Joint Inflammation ◽  
Joint Diseases ◽  
Nacl Solution ◽  
Prophylactic Administration ◽  
Inflammatory Edema

Among the diseases of the musculoskeletal system, the leading place is occupied by joint diseases. It is important to conduct effective prevention of these diseases in order to stop or slow down the development of pathological changes in the body. In this regard, an important issue is the search for means to restore joints. Promising in the prevention and treatment of joint diseases is the use of chondroitin sulfate, which is a natural component of the intercellular substance of cartilage. The aim of this work was to investigate the prophylactic effect of chondroitin sulfate on the activity of superoxide dismutase and catalase in rat blood serum under conditions of carrageenan-induced joint inflammation. The studies were conducted on white non-linear, sexually mature male rats weighing 180–240 g, in compliance with the general ethical principles of experiments on animals. All animals were divided into four experimental groups. The first group – control: animals sub-planar injected 0.1 ml of 0,9 % NaCl solution into the posterior right limb. The second group – animals received a therapeutic dose of 3 mg x kg-1 chondroitin sulfate daily for 28 days daily. The third group – animals were infused intramuscularly with 0,1 ml of 0,9 % NaCl solution in the posterior right limb for 28 days and for 29 days inflammatory edema of the limb was stimulated (animals were sub-planar injected with 0,1 ml of 1% carrageenan solution to the posterior right limb ) The fourth group – for 28 days rats were daily intramuscularly injected with a therapeutic dose of 3 mg x kg-1 chondroitin sulfate, after which on 29th day, inflammatory edema of the limb was stimulated. The total number of animals involved in experimental studies was 40 individuals. Superoxide dismutase activity was assessed by the ability of the enzyme to compete with nitro blue tetrazolium for superoxide radicals. Catalase activity was measured by the amount of intact hydrogen peroxide in the sample. Protein content was measured by the Lowry method. It was revealed that under conditions of carrageenan-induced joint inflammation in the blood serum, the antioxidant defense system is disrupted: the activity of superoxide dismutase decreases by 1,5 times, while the catalase activity increases by 2,1 times compared to the control. Prophylactic administration of chondroitin sulfate to animals with carrageenan-induced joint inflammation contributes to the restoration of the antioxidant system.

scholarly journals Cases of spontaneous interbreeding of wolf and domestic dog in the region of Southeast Banat

2006 ◽  
Vol 58 (4) ◽  
pp. 225-231 ◽  
Author(s):  
M. Milenkovic ◽  
Vesna Habijan-Mikes ◽  
Rada Matic
Keyword(s):  
Genetic Structure ◽  
Management Strategies ◽  
Domestic Dog ◽  
Primary Concern ◽  
Local Process ◽  
Conservation And Management

The study presents the first documented data indicating the occurrence of spontaneous interbreeding of wolf and domestic dog in nature on the territory of Serbia, based on three specimens originating from the region of Southeast Banat. Some unique morpho-anatomical malformations of the cranium in two specimens are described. Based on complex morphological and craniometrical analysis of hybrid specimens and comparison with the corresponding material of authentic wolves from this region, it is possible to follow a local process of multiple wolf/dog hybridization and disturbance of the authentic genetic structure of wolf. The identification of wolf/dog hybrids is a subject of primary concern for the development of conservation and management strategies. Because of great vulnerability of the population of South-Carpathian wolves on the boundaries of their range in Serbia, there is a need for permanent and increased protection in order to maintain their adequately strong population in this region. .

scholarly journals Spinocerebellar Ataxia Type 2 Is Associated with the Extracellular Loss of Superoxide Dismutase but Not Catalase Activity

2017 ◽  
Vol 8 ◽  
Author(s):  
Dennis Almaguer-Gotay ◽  
Luis E. Almaguer-Mederos ◽  
Raul Aguilera-Rodríguez ◽  
Roberto Rodríguez-Labrada ◽  
Dany Cuello-Almarales ◽  
...  
Keyword(s):  
Superoxide Dismutase ◽  
Spinocerebellar Ataxia ◽  
Catalase Activity ◽  
Spinocerebellar Ataxia Type ◽  
Spinocerebellar Ataxia Type 2

Seven new species of Graphidaceae (Lichenized Ascomycetes) from the Coastal Plain of southeastern North America

Phytotaxa ◽  
2014 ◽  
Vol 189 (1) ◽  
pp. 153 ◽  
Author(s):  
James C. Lendemer ◽  
Richard C. Harris
Keyword(s):  
North Carolina ◽  
New Species ◽  
North America ◽  
Coastal Plain ◽  
Management Strategies ◽  
Lichenized Ascomycetes ◽  
North America North ◽  
Effective Conservation ◽  
Conservation And Management

Seven new species of Graphidaceae are described from the Coastal Plain of southeastern North America: Acanthothecis floridana (Florida, USA), A. leucoxanthoides (North Carolina, USA), A. paucispora (North Carolina, USA), Fissurina alligatorensis (Florida and North Carolina, USA), F. americana (Florida and Georgia, USA), F. ilicicola (Florida and Georgia, USA), and Phaeographis oricola (North Carolina, USA). The ecology and distribution of each species is discussed in the broader context of the imminent need for effective conservation and management strategies to maintain the lichen biodiversity in the region. Color illustrations of all species are provided, as are keys to the genera Acanthothecis and Fissurina in North America north of Mexico.

Roadsides are key habitats for birds in the Argentine Pampas: conservation and management implications

2021 ◽  
pp. 1-6
Author(s):  
Daniela María Depalma ◽  
Mariela Verónica Lacoretz ◽  
Cecilia Zilli ◽  
Emilio Martín Charnelli ◽  
Myriam Emilia Mermoz
Keyword(s):  
Management Strategies ◽  
Tall Grass ◽  
Vegetation Diversity ◽  
Seed Availability ◽  
Bird Richness ◽  
Public Areas ◽  
Declining Species ◽  
Native Birds ◽  
Argentine Pampas ◽  
Conservation And Management

Summary Unexploited public areas such as roadsides could provide habitat to help preserve biodiversity in South America, as in other regions. Our objective was to determine the importance of the roadsides of the Argentine Pampas for native birds and to suggest management strategies. We surveyed birds inhabiting roadsides in all seasons and determined whether roadsides were used as habitat. We recorded a total of 95 species on roadsides, which represents 55% of those species described from the area. Species included specialists of grassland, wetland and woodland, 4 vulnerable species and 19 declining species. Bird richness decreased in winter, as well as grassland specialists’ abundances. Most individuals used roadsides for foraging and performing reproduction-related behaviours, mainly on native trees; these and tall grass were the main substrates. We conclude that many species of birds use the habitat provided by roadsides, and we recommend management strategies such as favouring seed availability in winter, restoring trees and tall grass and increasing vegetation diversity to maximize roadside conservation value.

Black Bass Diversity: Multidisciplinary Science for Conservation

2015 ◽  
Keyword(s):  
Population Dynamics ◽  
Management Strategies ◽  
Smallmouth Bass ◽  
Micropterus Dolomieu ◽  
Spawning Period ◽  
Sampling Gear ◽  
Gray Literature ◽  
Black Bass ◽  
Effective Conservation ◽  
Conservation And Management

<em>Abstract</em>.—We reviewed the published and gray literature associated with Neosho Smallmouth Bass <em>Micropterus dolomieu velox</em> and the genetically distinct Ouachita lineage. Substantial interstream variation appears to occur among these populations, particularly related to age. The Neosho subspecies is more abundant, grows faster, and lives longer than the genetically distinct Ouachita lineage. Recruitment is highly variable among streams for both populations and appears to be related to some undescribed aspects of hydrology but also likely reflect bias due to sampling gear. Information on annual and seasonal trends is lacking for the Neosho subspecies and the Ouachita lineages, particularly as related to the spawning period. Conservation efforts for these lineages might benefit from agencies partnering to achieve goals that extend beyond a particular agency’s responsibilities and state boundaries. Recognition of spatial and temporal considerations, combined with a better understanding of the population dynamics as related to abundance, growth, mortality and reproduction, would benefit the creation of more effective conservation and management strategies for genetically distinct populations of Smallmouth Bass <em>M. dolomieu</em>.

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