scholarly journals The effect of Pinus sylvestris L. plantings on the components activity of legumes antioxidant system

2020 ◽  
Vol 9 (2) ◽  
pp. 73-77
Author(s):  
Elena Yu. Kolmogorova ◽  
Oksana L. Tsandekova
Keyword(s):  
Ascorbic Acid ◽  
Pinus Sylvestris ◽  
Antioxidant System ◽  
Trifolium Repens ◽  
Negative Relationship ◽  
Growing Season ◽  
Botanical Garden ◽  
Natural Ecosystems ◽  
Leguminous Plants ◽  
Melilotus Officinalis

The paper shows the content of some components of the antioxidant system (ascorbic acid and peroxidase) in the leaves of leguminous plants growing under Pinus sylvestris L. plantings during the growing season. The studies were conducted on the territory of the Kuzbass Botanical Garden (coordinates 55,366186, 86,190160). The objects of the research were Melilotus officinalis and Trifolium repens. The ascorbic acid content was determined by the titrimetric method, peroxidase activity was determined by spectrophotometry. The components activity of the antioxidant system in the leaves of leguminous plants growing under P. sylvestris plantings depended on the species characteristics and the period of plant vegetation. The activity of peroxidase during the growing season in the leaves of Trifolium repens is higher than in the leaves of the Melilotus officinalis. As plants grow and develop, peroxidase levels increase. The content of ascorbic acid in the leaves of leguminous plants revealed an inverse relationship. The studied samples were characterized by the least variability in the content of ascorbic acid, in comparison with the activity of peroxidase. In the Melilotus officinalis, the gap in the variability of ascorbic acid decreased by 1,4 times, compared with Trifolium repens. The closest negative relationship in legumes was found between the activity of peroxidase and organic matter, mobile phosphorus; a positive correlation was noted between peroxidase and the amount of absorbed bases, which indicates a possibility of using the obtained data as diagnostic signs of plant conditions for monitoring natural ecosystems.

scholarly journals Perspectives of growing decorative perennials of the genus Iris L. for introduction in the Kuzbass botanical garden

2020 ◽  
pp. 133-142
Author(s):  
Оксана Леонидовна Цандекова ◽  
Оксана Олеговна Вронская
Keyword(s):  
Antioxidant System ◽  
Biochemical Parameters ◽  
Growing Season ◽  
Botanical Garden ◽  
Informative Parameter ◽  
Herbaceous Perennials

В статье представлены результаты морфо-биологических наблюдений и биохимических показателей декоративных корневищных многолетников рода Iris L. семейства Iridaceae, произрастающих в условиях Кузбасского ботанического сада. Установлена видоспецифичность по продолжительности вегетации и уровню накопления антиоксидантов в листьях декоративных травянистых многолетников: I. aphylla>I. halophila>I. chrysographes>I. ruthenica>I. pseudacorus. Выявленные перестройки в функционировании антиоксидантной системы ирисов позволяют рассматривать их, как приспособительные и защитные реакции, направленные на их выживание и декоративные качества в окружающей среде. Исследуемые показатели можно использовать в качестве информативного параметра для оценки состояния растений в интродукции. Here we present the results of morphological and biological observations and biochemical parameters of decorative rhizome perennials of the genus Iris L. of the Iridaceae family, growing in the Kuzbass Botanical Garden. We assess the duration of the growing season in relation to particular species. We also estimate the level of antioxidants in the leaves of decorative herbaceous perennials: I. aphylla> I. halophila> I. chrysographis> I. ruthenica> I. pseudacorus. The revealed rearrangements in the functioning of the antioxidant system of irises make it possible to consider them as adaptive and protective reactions aimed at their survival and preservation of decorative qualities. The studied indicators can be used as an informative parameter for assessing plants' state in the introduction.

scholarly journals Influence of drought on allelopathic properties of Pinus sylvestris L.

2020 ◽  
Vol 85-86 ◽  
Author(s):  
N.V. Rositska
Keyword(s):  
Soil Moisture ◽  
Pinus Sylvestris ◽  
Shoot Elongation ◽  
Botanical Garden ◽  
Inhibitory Effect ◽  
Lepidium Sativum ◽  
Allelopathic Effect ◽  
Natural Ecosystems ◽  
Allelopathic Potential ◽  
Allelopathic Activity

Objective – to investigate the influence of drought on allelopathic activity of Pinus sylvestris L. plants in conditions of M.M. Gryshko National Botanical Garden of the NAS of Ukraine. Material and methods. The choice of study objects was due to their habitat: plants of P. sylvestris grew in compliance with the necessary agricultural technology including regular irrigation at site 1 (control) and in the conditions of drought at site 2 that models natural ecosystems (experiment). The allelopathic activity of leaves and soil was determined. In the model experiments, Lepidium sativum L. ‘Azhur’, Triticum aestivum L. ‘Poliska 90’, Amaranthus caudatum L. ‘Rothschwanz’ were applied as the test plants. Results of the current study revealed that the allelopathic potential of needles and rhizosphere soil of P. sylvestris depends not only from the species but also from drought conditions. The inhibitory effect was stronger against root elongation than shoot elongation of seedlings. Conclusion. This study provides a laboratory-based evidence of the allelopathic effect of P. sylvestris exudates under drought stress on model plants. Studies showed that plants grown under conditions of lower soil moisture exhibit stronger inhibitory effect or slightly stimulate the growth of test objects in comparison with plants that had better water supply. This testifies to the relationship between soil moisture and seasonal allelopathic activity of the plants.

SYNTHESIS OF MYCORRHIZAE ON EXPLANTS OF THE ROOT HYPOCOTYL OF PINUS SYLVESTRIS L.

1966 ◽  
Vol 44 (8) ◽  
pp. 1087-1092 ◽  
Author(s):  
J. André Fortin
Keyword(s):  
Pinus Sylvestris ◽  
Root Cultures ◽  
Leguminous Plants ◽  
Sustained Growth

A method of growing excised root cultures of leguminous plants was modified for the culture of excised roots of Pinus sylvestris L. The inclusion of a portion of hypocotyl on the expiants from the seedlings was found essential to obtain sustained growth of the root. With such explants, typical ectotrophic mycor-rhizae were obtained upon inoculation with Amanita rubescens (Pers. ex Fr.) Quel.

scholarly journals BIOACTIVE COMPOUNDS DURING THE MATURATION OF FOUR FRUITS NATIVE TO THE RESTINGA FOREST OF CEARA

2017 ◽  
Vol 39 (5) ◽  
Author(s):  
NIGÉRIA PEREIRA GONÇALVES ◽  
ELISEU MARLÔNIO PEREIRA DE LUCENA ◽  
ORIEL HERRERA BONILLA ◽  
MÁRCIA RÉGIA SOUZA DA SILVEIRA ◽  
FRANCISCA JÉSSICA COSTA TAVARES
Keyword(s):  
Ascorbic Acid ◽  
Bioactive Compounds ◽  
Botanical Garden ◽  
Total Chlorophyll ◽  
Total Carotenoids ◽  
Plant Ecophysiology ◽  
Randomized Design ◽  
Total Anthocyanins ◽  
Maturation Stages ◽  
Completely Randomized Design

ABSTRACT Fruits provide not only essential nutrients for food, but also bioactive compounds that promote health benefits and help reducing the risk of developing non-communicable chronic diseases. In this sense, this work aimed at quantifying bioactive compounds during the maturation of four fruits native to the Restinga forest of Ceara. Myrtle fruits (Eugenia punicifolia (Kunth) DC.) were collected at the Botanical State Park of Ceara, Caucaia-CE, and guajiru (Chrisobalanus icaco L.), manipuça (Mouriri cearensis Huber) and murici-pitanga fruits (Byrsonima gardneriana A. Juss.) at the Botanical Garden of São Gonçalo, São Gonçalo do Amarante-CE. Fruits were collected at different stages (E) and transported to the Laboratory of Plant Ecophysiology, being characterized into five or six maturation stages according to the bark color, then processed and frozen for the following physicochemical and chemical evaluations: ascorbic acid, total chlorophyll, total carotenoids, total anthocyanins and yellow flavonoids. A completely randomized design was used, with five or six treatments, depending on the maturation stages of fruits and four replicates. Murici-pitanga had higher contents of ascorbic acid (ascorbic acid 646.23 mg/100 g E5), total carotenoids (6.13 mg/100 g E5) and total anthocyanins (7.99 mg/100 g E2); and myrtle had higher contents of total chlorophyll (11.05 mg/100 g E1) and yellow flavonoid (69.11 mg/100 g E2). There are positive and significant correlations between chlorophyll and carotenoid (R= 0.99; P <0.01) for manipuça and between anthocyanin and yellow flavonoid (R= 0.97; P <0.05) for murici-pitanga fruits; however, the correlation is negative and significant between ascorbic acid and yellow flavonoids (R= -0.98; P <0.05) for myrtle fruits. It could be concluded that murici-pitanga and myrtle fruits had the highest contents of bioactive compounds with the highest levels, therefore both fruits can be recommended to be commercially exploited by the food, cosmetic and phytomedicine sectors.

scholarly journals Plant Phenology and Its Anthropogenic and Natural Influencing Factors in Densely Populated Areas During the Economic Transition Period of China

2022 ◽  
Vol 9 ◽  
Author(s):  
Peijun Ju ◽  
Wenchao Yan ◽  
Jianliang Liu ◽  
Xinwei Liu ◽  
Liangfeng Liu ◽  
...  
Keyword(s):  
Climate Change ◽  
Economic Transition ◽  
Transition Period ◽  
Growing Season ◽  
Plant Phenology ◽  
Future Research ◽  
Urban Management ◽  
Climate Factors ◽  
Natural Ecosystems ◽  
The Impact

As a sensitive, observable, and comprehensive indicator of climate change, plant phenology has become a vital topic of global change. Studies about plant phenology and its responses to climate change in natural ecosystems have drawn attention to the effects of human activities on phenology in/around urban regions. The key factors and mechanisms of phenological and human factors in the process of urbanization are still unclear. In this study, we analyzed variations in xylophyta phenology in densely populated cities during the fast urbanization period of China (from 1963 to 1988). We assessed the length of the growing season affected by the temperature and precipitation. Temperature increased the length of the growing season in most regions, while precipitation had the opposite effect. Moreover, the plant-growing season is more sensitive to preseason climate factors than to annual average climate factors. The increased population reduced the length of the growing season, while the growing GDP increased the length of the growing season in most regions (8 out of 13). By analyzing the impact of the industry ratio, we found that the correlation between the urban management of emerging cities (e.g., Chongqing, Zhejiang, and Guizhou) and the growing season is more significant, and the impact is substantial. In contrast, urban management in most areas with vigorously developed heavy industry (e.g., Heilongjiang, Liaoning, and Beijing) has a weak and insignificant effect on plant phenology. These results indicate that different urban development patterns can influence urban plant phenology. Our results provide some support and new thoughts for future research on urban plant phenology.

scholarly journals Influence of climate on radial growth of scots pine (Pinus Sylvestris L.) In different habitats of Meshchera lowland

2019 ◽  
pp. 67-77
Author(s):  
O. S. Zheleznova ◽  
S. A. Tobratov
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Radial Growth ◽  
Negative Relationship ◽  
East European Plain ◽  
Radial Increment ◽  
Low Contrast ◽  
Positive Correlation ◽  
East European ◽  
Key Factor

This paper is devoted to the patterns of radial growth of Scots pine (Pinus sylvestris L.) in various topoecological conditions of the Meshchera lowland (Ryazan region, the East European plain). The generalized tree-ring chronologies are constructed for 16 habitats differing in features of a relief of a day surface and a bedrock surface. Despite the relatively low-contrast relief of Meshchera, the average radial pine increment within the study area differs by 2.5 times (1.53.9 mm per year). The correlation and cluster analyses revealed that the key factor influencing the width of annual tree rings of pine is the amount of the available soil moisture. Its surplus (in wetlands) and deficiency (in conditions of sandy outliers) negatively affects the radial pine increment. It is established that in the waterlogged habitats positive correlation of the radial pine increment with temperature and negative with precipitation of autumn of the previous year is observed. The positive correlation of the radial increment with precipitation of autumn, May and with winter temperature is typical for a pine from arid habitats. The negative relationship between the pines growth and amount of precipitation and river discharge may occur with a lag of 14 years in conditions of wetlands. The positive relationship of the radial pine increment with the integral parameters of the current years moisture is more significant in conditions of relatively high hydrodynamics (for example, in conditions of sandy outliers).

scholarly journals Growth and Development of Introduced Larix Mill. Species in the Taiga Zone (Karelia)

2021 ◽  
pp. 61-83
Author(s):  
Ivan T. Kishchenko
Keyword(s):  
Plant Communities ◽  
Growth And Development ◽  
Growing Season ◽  
Botanical Garden ◽  
Larix Sibirica ◽  
Middle Taiga ◽  
Taiga Zone ◽  
State University ◽  
Residential Landscaping ◽  
Phenological Phases

The study reports results of research carried out from April to October during 1988–2016 at the Botanical Garden of Petrozavodsk State University (South Karelia, middle taiga subzones). Three introduced species of the genus Larix (Larix sibirica Ledeb., L. leptolepis (Sieb. et Zucc.) Gord, and L. dahurica Turcz. ex Trautv.) were studied. The growth of shoots and needles in different species begins, reaches its culmination, and ends almost simultaneously, differing by no more than one week across the species. L. sibirica shows the highest growth rate. The timing of growth, culmination, and the dynamics of growth of shoots and needles are largely determined by variations in precipitation, temperature, and humidity. The direction and strength of such an effect may vary from year to year. The dates of phenological phases of the Larix species studied here are chiefly determined by the air temperature in the current growing season and the dates of formation of wintering buds in the previous growing season. Bud swelling and opening begins almost simultaneously in the studied species. Most of the other phenological phases begin and end earliest in L. sibirica and latest in L. leptolepis. All the studied species, primarily L. sibirica, are promising for residential landscaping and creation of artificial plant communities in Karelia

Combined effects of site preparation, soil properties, and sowing date on the establishment of Pinus sylvestris and Picea abies from seeds

2003 ◽  
Vol 33 (5) ◽  
pp. 931-945 ◽  
Author(s):  
Michelle de Chantal ◽  
Kari Leinonen ◽  
Hannu Ilvesniemi ◽  
Carl Johan Westman
Keyword(s):  
Soil Moisture ◽  
Picea Abies ◽  
Pinus Sylvestris ◽  
Soil Properties ◽  
Seedling Emergence ◽  
Growing Season ◽  
Sowing Date ◽  
Site Preparation ◽  
Winter Mortality ◽  
Frost Heaving

The aim of this study is to determine the effect of site preparation on soil properties and, in turn, the emergence, mortality, and establishment of Pinus sylvestris L. (Scots pine) and Picea abies (L.) Karst. (Norway spruce) seedlings sown in spring and summer along a slope with variation in soil texture and moisture. Three site preparation treatments of varying intensities were studied: exposed C horizon, mound (broken L–F–H–Ae–B horizons piled over undisturbed ground), and exposed Ae–B horizons. Seedling emergence was higher in the moist growing season than in the dry one. During a dry growing season, mounds and exposed C horizon had negative effects on soil moisture that increased mortality. Moreover, frost heaving was an important cause of winter mortality on mounds and exposed C horizon, whereas frost heaving was low on exposed Ae–B horizons, even though soil moisture and the content of fine soil particles (<0.06 mm) were high. Frost heaving mortality was higher for summer-sown than for spring-sown seedlings and for P. abies than for P. sylvestris. Growing season mortality was high following a winter with frost heaving, suggesting that roots were damaged, thereby making seedlings more susceptible to desiccation.

scholarly journals Gender differences in albumin and ascorbic acid in the vitreous antioxidant system

2020 ◽  
Vol 146 ◽  
pp. 257-263 ◽  
Author(s):  
Christoph Schwab ◽  
Margret Paar ◽  
Vera Heike Fengler ◽  
Domagoj Ivastinovic ◽  
Anton Haas ◽  
...  
Keyword(s):  
Gender Differences ◽  
Ascorbic Acid ◽  
Antioxidant System

scholarly journals Carbon use efficiency of mycorrhizal fungal mycelium increases during the growing season but decreases with forest age across a Pinus sylvestris chronosequence

2019 ◽  
Vol 107 (6) ◽  
pp. 2808-2822 ◽  
Author(s):  
Andreas Hagenbo ◽  
David Hadden ◽  
Karina E. Clemmensen ◽  
Achim Grelle ◽  
Stefano Manzoni ◽  
...  
Keyword(s):  
Pinus Sylvestris ◽  
Growing Season ◽  
Fungal Mycelium ◽  
Forest Age ◽  
Carbon Use Efficiency ◽  
Use Efficiency
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