scholarly journals Seasonal Variation in the Content of Condensed Tannins in Leaves of Xylopia emarginata Mart. (Annonaceae) in Response to Phenology and Climate

2021 ◽  
Vol 13 (10) ◽  
pp. 142
Author(s):  
Patrícia Conceição Medeiros ◽  
Yule Roberta Ferreira Nunes ◽  
Juliana Pimenta Cruz ◽  
Dayse Marcielle de Souza ◽  
Marly Antonielle Ávila ◽  
...  
Keyword(s):  
Condensed Tannin ◽  
Folk Medicine ◽  
Plant Secondary Metabolites ◽  
Ethanol Extract ◽  
Dry Season ◽  
Climatic Data ◽  
Phenological Stages ◽  
Minas Gerais State ◽  
Environmental Variations ◽  
One Year

Variations in the concentrations of plant secondary metabolites can occur due to the phenological stages of the plants, combined with environmental variations. Plants rich in tannins are used in folk medicine for different purposes. Xylopia emarginata Mart. (Anonaceae)-“Pindaíba” has been used to treat skin edema, bronchitis and malaria. We evaluated variations in condensed tannin (CTs) contents in relation to phenological variables in leaves of Xylopia emarginata during one year. The study took place in a Vereda in northern Minas Gerais State, Brazil. Monthly phenological observations as well as quantifications of the contents of condensed leaf tannins in ethanol and aqueous extracts were performed. The production of X. emarginata leaves occurred throughout the study, with greater budding and leaf fall in the dry season. Phenological observations were correlated with CT levels and climatic data of precipitation and temperature. There was a significant correlation (p < 0.05) between fruiting and CT levels in the extracts, which were higher during the dry season, 13.2% in the ethanol extract and 7.8% in the aqueous extract.

scholarly journals Cambial Activity and Phenology in Three Understory Species along an Altitude Gradient in Mexico

Forests ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 506
Author(s):  
Mayte S. Jiménez-Noriega ◽  
Lauro López-Mata ◽  
Teresa Terrazas
Keyword(s):  
Soil Temperature ◽  
Sierra Nevada ◽  
Cambial Activity ◽  
Life Forms ◽  
Dry Season ◽  
Vascular Cambium ◽  
Phenological Stages ◽  
Altitude Gradient ◽  
The Mean ◽  
Trees And Shrubs

The aims of this study were to evaluate the cambial activity and phenology of three species with different life forms (Alchemilla procumbens, Acaena elongata and Ribes ciliatum) along an altitudinal gradient and to establish which environmental variables (light, soil humidity and temperature) had the greatest influence on cambial activity and phenological stages. Over two years, data on phenology, growth and cambium were gathered every four weeks in three to six sites per species in Sierra Nevada, Mexico. The results showed that Ribes is the only species that terminates cambial activity with leaves senescence and is influenced by the minimum soil temperature. The light environment influenced the vegetative stages in Alchemilla (cryptophyte), while in Acaena (hemicryptophyte), the mean soil temperature explained the findings related to leaf area during the dry season and growth along the gradient. In the three species, the reproductive phase dominated for a longer period at higher elevations, especially in Alchemilla. Only Ribes, the phanerophyte, showed a similar cambial activity to other trees and shrubs. Although cambium reactivates during the dry season, no xylogenesis occurs. The three species varied during the time in which vascular cambium was active, and this was dependent on the altitude. Specifically, the variation was more rhythmic in Ribes and switched on and off in Alchemilla. It is likely that, depending on the life form, vascular cambium may be more or less susceptible to one or more climate factors.

Analyses of groundwater flow and plant evapotranspiration in a vegetated soil slope

2013 ◽  
Vol 50 (12) ◽  
pp. 1204-1218 ◽  
Author(s):  
A.K. Leung ◽  
C.W.W. Ng
Keyword(s):  
Groundwater Flow ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Three Dimensional ◽  
Root Water Uptake ◽  
Dry Season ◽  
Climatic Data ◽  
Wet Season ◽  
Soil Slopes ◽  
Transient Seepage

Understanding seasonal hydrogeological responses of vegetated soil slopes is vital to slope stability because pore-water pressure (PWP) varies from positive values upon rainfall in wet seasons to negative values upon plant evapotranspiration (ET) in dry seasons. There are, however, few case histories that report seasonal performance of vegetated soil slopes. In this study, a vegetated slope situated in Hong Kong was instrumented to analyse (i) groundwater flow during rainfall in the wet season and (ii) effects of plant ET on PWP in the dry season. Two- and three-dimensional anisotropic transient seepage analyses are conducted to identify groundwater flow mechanism(s) during a heavy rainstorm. Through water and energy balance calculations, measured plant-induced suction is interpreted with plant characteristic and climatic data. During the rainstorm, substantial recharge of the groundwater table was recorded, likely due to preferential water flow along relict joints and three-dimensional cross-slope groundwater flow. During the dry season, the peak suction induced by plant ET is up to 200 kPa and the depth of influence is shallower than 200% of the root depth. For the range of suctions monitored, root-water uptake is revealed to have been restricted by suction not very significantly and was driven mainly by the climatic variation.

scholarly journals Effects of water deficit in two phenological stages on production of japanese cucumber cultived in greenhouse

2011 ◽  
Vol 31 (4) ◽  
pp. 676-686 ◽  
Author(s):  
Eduardo C. Oliveira ◽  
Jacinto de A. Carvalho ◽  
Wellington G. da Silva ◽  
Fátima C. Rezende ◽  
Willian F. de Almeida
Keyword(s):  
Soil Water ◽  
Water Deficit ◽  
Irrigation Management ◽  
Soil Water Potential ◽  
Phenological Stages ◽  
Cucumis Sativus L ◽  
Randomized Design ◽  
Minas Gerais State ◽  
Engineering Department ◽  
Four Levels

The experiment was performed in the experimental area of the Engineering Department Federal University of Lavras, Minas Gerais State, Brazil. It aimed at identifying the adequate irrigation management of the greenhouse-cultivated Japanese cucumber (Cucumis sativus L.). complete randomized design, with four levels of soil water potential (15; 30; 60 e 120 kPa) at two phenological phases (vegetative and reproductive), and 5 replications. Overall, the results showed decrease of yield according to increase of soil water potentials. During the reproductive stage, Japanese cucumber plants were more sensitive to water deficit, resulting in further decrease in yield compared to applied water deficit during the vegetative stage of the culture.

scholarly journals Branch elongation and diameter growth were temporally dissociatedin "cerrado" tree species

Hoehnea ◽  
2009 ◽  
Vol 36 (3) ◽  
pp. 437-444 ◽  
Author(s):  
Davi Rodrigo Rossatto
Keyword(s):  
Water Status ◽  
Carbon Assimilation ◽  
Dry Season ◽  
Diameter Growth ◽  
Wet Season ◽  
Dry Period ◽  
Central Brazil ◽  
Branch Growth ◽  
Tree Community ◽  
One Year

Here is a communicating about time differences between branch and diameter growth in a tree community of ten species in Neotropical savanna ("cerrado") of Central Brazil. This work was conducted to study branch expansion and diameter growth in a period of one year between 2006 and 2007. Branch growth had begin in middle dry season and had the peak occurrence during the dry period in September, while diameter growth had begin in late dry season and peaked in the middle of wet season in December. The majority of species followed the same pattern. Branch growth did not have relation with rainfall, while diameter growth had a clear and positive relation with rainfall records. These results suggested that branch growth was not depend on rainfall but only on water status recover, while diameter growth probably depends strongly on water and to carbon assimilation that occurs after branch and leaf expansion.

scholarly journals Bioactivities of the ethanol extract from Ageratum fastigiatum branches: antioxidant, antinociceptive and anti-inflammatory

2016 ◽  
Vol 88 (3) ◽  
pp. 1471-1484
Author(s):  
GLAUCIEMAR DEL-VECHIO-VIEIRA ◽  
BRUNA C.S. SANTOS ◽  
MARIA SILVANA ALVES ◽  
AÍLSON L.A. ARAÚJO ◽  
CÉLIA H. YAMAMOTO ◽  
...  
Keyword(s):  
Antinociceptive Effect ◽  
Folk Medicine ◽  
Reducing Power ◽  
Ethanol Extract ◽  
Immersion Test ◽  
Significant Inhibition ◽  
Paw Edema ◽  
Hot Plate ◽  
Tail Immersion ◽  
Anti Inflammatory

ABSTRACT The present study was designed to investigate the antioxidant, antinociceptive and anti-inflammatory activities of the ethanol extract from Ageratum fastigiatum branches. Phytochemical screening and total phenol and flavonoid contents were determined. The antioxidant activity was assessed by 2,2-diphenyl-1-pycrilhydrazin (DPPH) and iron reducing power methods. The antinociceptive effect was evaluated using the acetic acid-induced writhing, formalin, hot plate and tail immersion assays; while the carrageenan-induced paw edema and pleurisy tests were performed to examine the anti-inflammatory activity against acute inflammation. The extract revealed the presence of flavonoids, tannins, coumarins, terpenes, sterols and saponins. Expressive levels of total phenols and flavonoids and a promising antioxidant effect were quantified. At the doses of 50, 100 and 200 mg/kg, the extract inhibited the writhing, reduced both phases of paw licking time and increased the reaction time on the hot plate. In the tail immersion test, the extract (50, 100 and 200 mg/kg) caused a significant inhibition of pain. In these doses, the paw edema, exudate volume and leucocyte mobilization were significantly reduced. These results suggest that A. fastigiatum can be an active source of substances with antioxidant, antinociceptive and anti-inflammatory activities, adding scientific support to the appropriate use in the Brazilian folk medicine.

scholarly journals Investigation of Pharmacological Activity of Caralluma penicillata: Anti-Inflammatory Properties and Gastritis Protection against Indomethacin in Adult Guinea Pigs

2014 ◽  
Vol 2014 ◽  
pp. 1-9
Author(s):  
Nabil Albaser ◽  
Najeeb Ghanem ◽  
Mohanad Shehab ◽  
Adnan Al-Adhal ◽  
Mohammed Amood AL-Kamarany
Keyword(s):  
Chronic Inflammation ◽  
Guinea Pigs ◽  
Therapeutic Potential ◽  
Histological Study ◽  
Folk Medicine ◽  
Ethanol Extract ◽  
Optimum Dose ◽  
Repeated Doses ◽  
Anti Inflammatory ◽  
Inflammatory Effect

Caralluma is a plant that possessing a great therapeutic potential in folk medicine in Yemen, namely, Caralluma penicillata (C. penicillata) as antiulcer. The study aims to evaluate the anti-inflammatory properties and gastritis protection activity of C. penicillata against indomethacin in adult guinea pigs. The study was divided into four parts: firstly, the optimum dose of extract as anti-inflammatory effect was determined. Secondly, the acute anti-inflammatory effect of extract were estimated. Thirdly, the repeated doses of extract against chronic inflammation was estimated. The anti-inflammatory activity of extract was compared with indomethacin as a prototype of drug against inflammation. Fourthly, the gastritis protection properties of extract with/without indomethacin were performed. The results showed that a 400 mg/kg of 10% ethanol extract produced the maximum of anti-inflammatory effect. Also, the single dose of extract was equipotent for indomethacin (10 mg/kg), but shorter in duration with regard to acute anti-inflammatory effect. In addition, the repeated doses of extract against chronic inflammation were less potent than indomethacin with regard to ulcerogenic effect. On the other hand, extract-indomethacin combination reduced the gastritis effect of indomethacin based on ulcer index and histological study.

scholarly journals Occurrence of Lutzomyia longipalpis (Phlebotominae) and canine visceral leishmaniasis in a rural area of Ilha Solteira, SP, Brazil

2014 ◽  
Vol 23 (4) ◽  
pp. 456-462 ◽  
Author(s):  
Julio Cesar Pereira Spada ◽  
Diogo Tiago da Silva ◽  
Kennya Rozy Real Martins ◽  
Lílian Aparecida Colebrusco Rodas ◽  
Maria Luana Alves ◽  
...  
Keyword(s):  
Visceral Leishmaniasis ◽  
Rural Area ◽  
Antibody Test ◽  
Lutzomyia Longipalpis ◽  
Climatic Data ◽  
Canine Visceral Leishmaniasis ◽  
Serological Tests ◽  
Relative Air Humidity ◽  
Control And Prevention ◽  
One Year

This study aimed to investigate the occurrence of Lutzomyia longipalpis and also the canine visceral leishmaniasis (CVL) in a rural area of Ilha Solteira, state of São Paulo. Blood samples were collected from 32 dogs from different rural properties (small farms) and were analyzed by ELISA and the indirect immunofluorescence antibody test (IFAT) in order to diagnose CVL. From these serological tests, 31.25% of the dogs were positive for CVL and these were distributed in 66.7% (8/12) of the rural properties, which were positive for L. longipalpis. CDC (Center for Disease Control and Prevention) light traps were installed in 12 properties (one per property) and insects were caught on three consecutive days per month for one year. L. longipalpis was present on 100% of the rural properties visited, at least once during the twelve-month interval, totaling 64 males and 25 females. The insects were more numerous after the peak of the rain, but the association between prevalence of peridomestic vectors and the climatic data (precipitation, relative air humidity and temperature) and the occurrences of CVL among dogs on each rural property were not statistical significant (p <0.05). However, the occurrence of CVL cases in dogs and the presence of L. longipalpis indicate that more attention is necessairy for the control of this disease in the rural area studied.

scholarly journals Pengaruh Teknik dan Pelarut Ekstraksi Terhadap Aktivitas Antioksidan dari Empat Jenis Ekstrak Daun Rosella (Hibiscus sabdariffa L.)

2018 ◽  
Vol 1 (3) ◽  
pp. 014-019
Author(s):  
Ari Sri Windyaswari ◽  
Yenni Karlina ◽  
Amalia` Junita
Keyword(s):  
Free Radical ◽  
Folk Medicine ◽  
Water Extract ◽  
Ethanol Extract ◽  
Hibiscus Sabdariffa ◽  
Native Plant ◽  
Ic50 Values ◽  
Radical Method ◽  
Anti Oxidant ◽  
Infusion Method

Tanaman rosella merupakan tanaman asli dari benua Asia (India hingga Malaysia) dan benua Afrika. Kultivasi bagian bunga, daun, dan biji dari tanaman rosella (Hibiscus sabdariffa L.) telah lama digunakan oleh masyarakat sebagai bahan makanan dan pengobatan empiris. Hasil penelitian sebelumnya menunjukkan tanaman rosella memiliki aktivitas farmakologi sebagai antikanker, antibakteri dan antioksidan. Telah dilaporkan bahwa bagian daun dan akar rosella dilaporkan mengandung senyawa fenolik terbanyak dibandingkan dengan bagian lainnya. Penelitian ini bertujuan untuk mengetahui pengaruh teknik dan pelarut ekstraksi terhadap aktivitas antioksidan dari empat jenis ekstrak daun rosella (Hibiscus sabdariffa L.). Teknik ekstraksi yang dilakukan adalah maserasi, infus dan refluk menggunakan pelarut air dan pelarut etanol. Aktivitas peredaman radikal bebas DPPH teridentifikasi pada pola kromatogram lapis tipis dengan penampak bercak DPPH 0,2% dari seluruh ekstrak daun rosella. Pengujian aktivitas antioksidan menggunakan metode peredaman radikal bebas DPPH dilakukan terhadap seluruh ekstrak daun rosella, yaitu ekstrak air teknik maserasi (AM), ekstrak air teknik infus (AI), ekstrak etanol teknik maserasi (EM), serta ekstrak etanol teknik refluk (ER). Nilai IC50 ekstrak AM, AI, EM dan ER berturut-turut adalah: 0,00056 ppm (sangat kuat); 0,00057 (sangat kuat); 0,00044 ppm (sangat kuat); 0,00092 ppm (sangat kuat). Metode penyarian metabolit sekunder optimal untuk aktivitas antioksidan pada daun rosella adalah teknik ekstraksi maserasi dengan pelarut etanol (ER).   Rosella is one of a native plant from Asia (India to Malaysia) and Africa. The Flowers, leaves, and seeds cultivated from rosella (Hibiscus sabdariffa L.) have been used in folk medicine as food and empirical treatment.  The previous study reported the pharmacological activities of rosella as anti-cancer, anti-bacterial and anti-oxidant.  It has been reported that leaf and root of rosella found to have phenolic compounds as the major components. This research was conducted to evaluate the effect of extraction technique and solvent on the anti-oxidant activity of four extracts of rosella leaves (Hibiscus sabdariffa L.). The extraction techniques include maceration, infusion and reflux with water and ethanol. Scavenging activities of DPPF free radical of all rosella leaves extracts were identified by thin layer chromatography, indicated by DPPH 0,2% reagent. The evaluation of antioxidant activity using scavenging DPPH free radical method was performed to all rosella leaves extract, including water extract by maceration method (AM), water extract by infusion method (AI), ethanol extract by maceration method (EM), ethanol extract by reflux method (ER).  The IC50 values of AM, AI, EM and ER were 0,00056 ppm (very strong); 0,00057 (very strong); 0,00044 ppm (very strong); 0,00092 ppm (very strong). The most optimum method to extract secondary metabolite with anti-oxidant properties was maceration with ethanol (ER).

scholarly journals On the epidemiology of helminth parasites in Hangul Deer Cervus hanglu hanglu (Mammalia: Artiodactyla: Cervidae) of Dachigam National Park, India

2021 ◽  
Vol 13 (1) ◽  
pp. 17517-17520
Author(s):  
Naziya Khurshid ◽  
Hidayatullah Tak ◽  
Ruqeya Nazir ◽  
Kulsum Ahmad Bhat ◽  
Muniza Manzoor
Keyword(s):  
Risk Factors ◽  
National Park ◽  
Helminth Infection ◽  
Dry Season ◽  
Helminth Parasites ◽  
Wet Season ◽  
Factors Associated ◽  
Dictyocaulus Viviparus ◽  
Dachigam National Park ◽  
One Year

A one-year study conducted to ascertain the prevalence and risk factors associated with helminth infection in Hangul Deer Cervus hanglu hanglu at Dachigam National Park revealed that 40.45% (89 of 220 samples) were infected with four helminth species including Heamonchus contortus, Trichuris ovis, Dictyocaulus viviparus, and Moneizia expansa.  The study signified that the infection was more prevalent during the dry season (summer and autumn) as compared to the wet season (winter and spring).  The overall prevalence of Heamonchus contortus was the highest (23.18%) followed by Trichuris ovis (8.18%), followed by Dictyocaulus viviparus (5.45%), and Moneizia expansa (3.63%).  The present study should be of importance in conserving the erstwhile state animal, listed as Critically Engendered in 2017 by IUCN.

scholarly journals Heterosis in the second and third generation affects litter size in a crossbreed mink (Neovison vison) population

2014 ◽  
Vol 66 (3) ◽  
pp. 1097-1103 ◽  
Author(s):  
Janne Thirstrup ◽  
Cino Pertoldi ◽  
Peter Larsen ◽  
Vivi Nielsen
Keyword(s):  
Litter Size ◽  
Maternal Effects ◽  
Inbreeding Depression ◽  
Neovison Vison ◽  
Parental Line ◽  
Third Generation ◽  
Black Line ◽  
Environmental Variations ◽  
The Mean ◽  
One Year

Litter sizes in a cross between Brown and Black mink color types were observed through six generations. Litter size was significantly affected by yearly environmental variations. After adjusting for year effects, we found significant increases in litter size in the second and third generations (F2 and F3) after crossing. Thereafter, in the following generations, litter size dropped to a level comparable to the mean litter size of the midparent. Increased litter size in F2 compared to F1 indicated that maternal effects influenced litter size more than non-maternal effects. The heterosis was mainly caused by an increase in litter size compared to the Black parental line. This indicates that the Black line was affected by inbreeding depression prior to crossing. We also found that two-year old F1 females had significantly more offspring compared to one-year old F1 females.

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