GAYANA BOTANICA最新文献_第8页

Contribución al conocimiento de la biota liquénica de la Reserva Nacional Katalalixar, Patagonia, Chile 对智利巴塔哥尼亚Katalalixar国家保护区地衣生物群知识的贡献

IF 0.3 4区生物学

GAYANA BOTANICA Pub Date : 2020-06-01 DOI: 10.4067/s0717-66432020000100038

Johana Villagra, David Alors, Angélica Casanova-Katny

引用次数: 0

Life Stages and Demography of Invasive Shrub Cytisus scoparius (Fabaceae) in Lithuania 立陶宛入侵灌木菖蒲(豆科)的生命阶段和人口统计学

IF 0.3 4区生物学

GAYANA BOTANICA Pub Date : 2020-06-01 DOI: 10.2478/botlit-2020-0001

Laurynas Taura, Z. Gudžinskas

{"title":"Life Stages and Demography of Invasive Shrub Cytisus scoparius (Fabaceae) in Lithuania","authors":"Laurynas Taura, Z. Gudžinskas","doi":"10.2478/botlit-2020-0001","DOIUrl":"https://doi.org/10.2478/botlit-2020-0001","url":null,"abstract":"Abstract Alien invasive woody plant species, particularly those associated with nitrogen-fixing bacteria, are of special concern, because they may cause drastic changes in entire ecosystems. Although most of invasive species of Lithuania originate from other continents, one of these, Cytisus scoparius, is native to Europe. Fast spread of this species in Lithuania and its invasion to forest, coastal and continental sand, occasionally grassland habitats, stimulated us to study demographic structure of its populations. The aim of this research was to evaluate density, life stage and age structure of the populations, and to analyse relationships of the age of individuals with their life stages, height and stem diameter. Five populations were studied in the western, southern and eastern parts of Lithuania in July–August 2017. For the study, we selected stands of this species occupying at least 0.1 ha in a uniform habitat. We applied sampling plot method, and studied at least 100 individuals in each population, excluding seedlings. The age, life stage, height and stem diameter of 583 individuals were studied. The average density of individuals ranged between 5.15 individuals/m2 and 15.40 individuals/m2. Juvenile individuals reach the stage of vegetative adults on the second or third growth season, occasionally on the third year they reach even the stage of generative adults. The average age of juveniles was 1.10 years, of vegetative adults it was 2.99 years and 6.26 years of generative adults. The oldest generative individual was 28 years old. Linear regression analysis of the relationship between the plant age and the stem diameter revealed that the age predetermined the stem diameter variance by 81.0% in the studied populations. This study revealed that densities of C. scoparius individuals of all life stages in disturbed and undisturbed habitats were sufficient to sustain longevity and further expansion of populations. Therefore, appropriate measures for control and eradication of this species should be applied, particularly in the habitats of high conservation value.","PeriodicalId":55127,"journal":{"name":"GAYANA BOTANICA","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83597937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

The Genus Corispermum L. (Amaranthaceae) in the Baltic States 标题波罗的海国家的苋属植物

IF 0.3 4区生物学

GAYANA BOTANICA Pub Date : 2020-06-01 DOI: 10.2478/botlit-2020-0006

P. Evarts-Bunders, G. Evarte-Bundere, Maija Medne, Aiva Bojāre, Dana Krasnopoļska, Inita Svilāne

{"title":"The Genus Corispermum L. (Amaranthaceae) in the Baltic States","authors":"P. Evarts-Bunders, G. Evarte-Bundere, Maija Medne, Aiva Bojāre, Dana Krasnopoļska, Inita Svilāne","doi":"10.2478/botlit-2020-0006","DOIUrl":"https://doi.org/10.2478/botlit-2020-0006","url":null,"abstract":"Abstract The paper presents the data on taxonomical diversity and distribution patterns and dynamics of the Corispermum species in the Baltic States over the last hundred years. Field studies and the herbarium material analyses were carried out. The distribution dynamics was analysed by comparing all known localities of the Corispermum species in two time periods: by 1990, and from 1991 to the present. Analysis of the herbarium material confirmed that currently there are four species in the Baltic States: Corispermum hyssopifolium, C. declinatum, C. intermedium and C. pallasii. The only endemic species to the Eastern Baltic Region, C. intermedium, is considered as typical for annual vegetation on embryonic shifting dunes and other coastal habitats. In Lithuania, this species is considered extinct or almost extinct, as has not been found for more than 30 years, only its hybrids with C. pallasii. The largest and most stable population of C. intermedium has been found on the eastern shore of the Gulf of Rīga in Latvia. Other species such as ephemerophytic C. hyssopifolium and C. declinatum also prefer dry and disturbed habitats. Both have become less frequent in recent years. However, potentially invasive C. pallasii has been observed in the region with increasing distribution dynamics. The Estonian and Latvian herbaria analysis confirmed that all specimens previously identified as C. algidum after re-examination were identified as C. pallasii or C. intermedium and more often as hybrid C. intermedium × C. pallasii.","PeriodicalId":55127,"journal":{"name":"GAYANA BOTANICA","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73747442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reporte de Peridiniopsis borgei Lemmermann (Dinophyceae) en aguas continentales de Perú 秘鲁内陆水域的Peridiniopsis borgei Lemmermann(恐龙科)报告

IF 0.3 4区生物学

GAYANA BOTANICA Pub Date : 2020-06-01 DOI: 10.4067/s0717-66432020000100062

Enrique Ascencio, Leonardo H. Mendoza-Carbajal, M. Baylón, P. Rivera, Aleksander F. Krakhmalnyi, F. Cruces, Roberto Urrutia

引用次数: 0

Impact of Short-Term Abandonment on the Structure and Functions of Semi-Natural Dry Grasslands 短期撂荒对半自然干旱草原结构和功能的影响

IF 0.3 4区生物学

GAYANA BOTANICA Pub Date : 2020-06-01 DOI: 10.2478/botlit-2020-0004

Domas Uogintas, V. Rašomavičius

引用次数: 1

Modifying Effects of Some Plant Hormones on Zucchini Cotyledons Subjected to High Temperature and Excess Copper 一些植物激素对高温和过量铜胁迫下西葫芦子叶的修饰作用

IF 0.3 4区生物学

GAYANA BOTANICA Pub Date : 2020-06-01 DOI: 10.2478/botlit-2020-0003

E. Stoynova-Bakalova, N. Ivanova, Dimitar Vaskov Bakalov, L. Gigova

{"title":"Modifying Effects of Some Plant Hormones on Zucchini Cotyledons Subjected to High Temperature and Excess Copper","authors":"E. Stoynova-Bakalova, N. Ivanova, Dimitar Vaskov Bakalov, L. Gigova","doi":"10.2478/botlit-2020-0003","DOIUrl":"https://doi.org/10.2478/botlit-2020-0003","url":null,"abstract":"Abstract The aim of the study was to investigate the potential beneficial effects of exogenous application of methyl jasmonate (MeJa) and phenylurea cytokinin (4PU-30) on zucchini (Cucurbita pepo L.) cotyledons subjected to high temperature (HT) and combined HT plus excess copper (Cu2+) stress. Compared to HT stressed zucchini cotyledons, exposure to excess Cu2+ prior to HT treatment inhibited the growth, decreased superoxide dismutase (SOD), glutathione peroxidase (GPx) and glutathione reductase (GR) activities, increased glutathione-Stransferase (GST) and peroxidase (Px) total activities, and induced new enzyme isoforms (GST4, GST8, and Px4). The effect of MeJa on the double-stressed plants was to increase SOD, GPx and Px total activities and stimulate the activity of GST8, GST9, GST10, SOD5, Px3 and Px8 isoenzymes. In addition to SOD, GPx and Px, 4PU-30 increased GST total activity, up-regulated Px1 and GR1, and had a higher stimulatory effect on SOD5, Px3, GPx3, GST9 and GST10 activities. Copper, 4PU-30 and MeJa treatments changed the abundance and pattern (MeJa) of soluble zucchini polypeptides in a specific manner. MeJa and especially 4PU-30 applied alone, or in combination, stimulated the growth of later HT-treated cotyledons. 4PU-30 counteracted better than MeJa in the HT+heavy metal-caused inhibition of the growth. The data indicated that both MeJa and 4PU- 30 may protect the zucchini plants from high temperature and combined high temperature plus excess copper stress, but 4PU-30 was more effective; the protective effect was related to the changes in the gene expression, total antioxidant enzyme activities and the activity of individual isoforms of the enzymes.","PeriodicalId":55127,"journal":{"name":"GAYANA BOTANICA","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91033271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Genera Euastrum and Micrasterias (Charophyta, Desmidiales) from Fens in the Southern Part of Middle Urals, Russia 来自俄罗斯中乌拉尔山脉南部沼泽地区的黄芪属和黄芪属(Charophyta, Desmidiales)

IF 0.3 4区生物学

GAYANA BOTANICA Pub Date : 2020-06-01 DOI: 10.2478/botlit-2020-0002

A. S. Shakhmatov

引用次数: 1

Comparative Evaluation of Argania spinosa and Olea europaea Leaf Phenolic Compounds and their Antioxidant Activity 刺钢和油橄榄叶中酚类化合物及其抗氧化活性的比较评价

IF 0.3 4区生物学

GAYANA BOTANICA Pub Date : 2020-06-01 DOI: 10.2478/botlit-2020-0007

A. Lfitat, H. Zejli, Abdelkamel Bousselham, Y. E. Atki, B. Lyoussi, A. Gourch, A. Abdellaoui

{"title":"Comparative Evaluation of Argania spinosa and Olea europaea Leaf Phenolic Compounds and their Antioxidant Activity","authors":"A. Lfitat, H. Zejli, Abdelkamel Bousselham, Y. E. Atki, B. Lyoussi, A. Gourch, A. Abdellaoui","doi":"10.2478/botlit-2020-0007","DOIUrl":"https://doi.org/10.2478/botlit-2020-0007","url":null,"abstract":"Abstract We conducted this study to determine and compare the content of phenolic compounds and flavonoids in the argan and olive leaves as well as their antioxidant capacity in aqueous, methanolic, and ethyl acetate extracted fractions. In vitro antioxidant activity was evaluated in comparison with synthetic antioxidants by assessing DPPH• radical scavenging capacity, ferric reducing antioxidant power, scavenging ability by inhibiting the β-carotene/linoleic acid emulsion oxidation, and by the ABTS radical scavenging activity assay. Total phenolic content in argan samples ranged from 221.69 ± 2.07 to 1.32 ± 0.01 mg GAE/g DW and in olive samples from 144.61 ± 0.82 to 1.21 ± 0.02 mg GAE/g DW. Total flavonoids content in argan samples varied from 267.37 ± 1.12 to 25.48 ± 0.02 mg QE/g DW, while in olives from 96.06 ± 0.78 to 10.63 ± 0.05 mg QE/g DW. In vitro antioxidant studies strongly confirmed the antioxidant potency of argan and olive leaves and their richness in secondary metabolites that are effective in free radicals scavenging and metal chelating capacities, indicating their antioxidant power.","PeriodicalId":55127,"journal":{"name":"GAYANA BOTANICA","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87042971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Molecular Autograph of Maturase-K Gene in Isodon rugosus (Lamiaceae) 松果Isodon rugosus (Lamiaceae)成熟酶- k基因的分子特征

IF 0.3 4区生物学

GAYANA BOTANICA Pub Date : 2020-06-01 DOI: 10.2478/botlit-2020-0009

D. K. Srivastava, Pekhna Bansal, Pradeep K. Singh, M. I. Saggoo

{"title":"Molecular Autograph of Maturase-K Gene in Isodon rugosus (Lamiaceae)","authors":"D. K. Srivastava, Pekhna Bansal, Pradeep K. Singh, M. I. Saggoo","doi":"10.2478/botlit-2020-0009","DOIUrl":"https://doi.org/10.2478/botlit-2020-0009","url":null,"abstract":"Abstract Molecular autograph of trn/mat-K gene was used as one of the important candidate marker in addressing the questions of systematics and barcoding of medicinal plants. Features of trn/mat-K gene in Isodon rugosus (Lamiaceae) were assessed for the first time (NCBI GenBank Accession Number: MH939199.1). Sequence of 756 bp length was amplified by the universal matK primers (matK472F and matK1248R) in the cpDNA of the plant. It was reported to contain trnK gene (>1…..50; >746…..756), partial sequence; and matK gene (>51…..745), partial coding DNA sequence. Alignment search and analysis showed that only nine different Isodon species are currently available for matK sequences with repeated copy of submissions in GenBank. The matK sequences of I. rugosus was reported with 34.2 (G + C)% and 17 variable sites (VS), out of which seven were singleton (ST) and 10 sites were species-specific parsimoniously-informative (PI) that could be used to differentiate I. rugosus from other species as well as to authenticate the taxon. Phylogenetic analysis resulted into monophyletic clustering of I. rugosus near to the clade having I. coetsa by both maximum likelihood (ML) and maximum parsimony (MP) methods. Clades obtained in ML tree were more informative as compared to MP tree.","PeriodicalId":55127,"journal":{"name":"GAYANA BOTANICA","volume":null,"pages":null},"PeriodicalIF":0.3,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76844712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Errata in Volume 25 Issue 2, 2019 勘误表载于2019年第25卷第2期

IF 0.3 4区生物学

GAYANA BOTANICA Pub Date : 2020-06-01 DOI: 10.2478/botlit-2020-0011

引用次数: 0