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Zafar Hayat; Khuram Shahzad; Habib Ali; Ryan Casini; Khalid Naveed; Ahmed Hafeez; Diaa O. El-Ansary; Hosam O. Elansary; Sajid Fiaz; Muhammad Abaid-Ullah; Fauzia Yusuf Hafeez; Muhammad Shahid Iqbal; Anwar Ullah
... A major task of biodiversity researchers is speciation and understanding the processes of divergence. This type of research can provide a clear understanding of the mechanisms that produce biodiversity. We analyzed the 16S rRNA gene data by utilizing multivariate statistics for analyses of microbial community structures. The 16S rRNA gene is the most widely applied genetic marker to study microbia ...
... Effects of herbivory on competition between invasive and native plants have seldom been examined from an above-belowground integrated perspective. We examined the interactions between a monophagous beetle, Agasicles hygrophila, or an oligophagous beetle, Cassida piperata, and a root-knot nematode on the intensity of intra- and interspecific interactions between the invasive Alternanthera philoxero ...
Vallisneria; asexual reproduction; carbon; clones; germination; lakes; light intensity; light requirement; macrophytes; nitrogen; nitrogen content; overwintering; phytomass; plant growth; regrowth; sediments; sexual reproduction; solar radiation; spring; water management
Abstract:
... The dynamics of plant populations are highly influenced by light-dependent growth features and patterns of reproduction when overwintering. Vallisneria spinulosa is a common submersed macrophyte and has been widely used in lake restoration projects. The relationship between reproduction when overwintering and regrowth in the following year is not well known and may vary with light intensity. In th ...
biomass; clones; ecosystems; eutrophication; freshwater; functional diversity; macrophytes; nestedness; pollution; social welfare; species richness; specific leaf area; surveys; China
Abstract:
... Increasing eutrophication poses a considerable threat to freshwater ecosystems, which are closely associated with human well-being. As important functional entities for freshwater ecosystems, submerged macrophytes have suffered rapidly decline with eutrophication. However, it is unclear whether and how submerged macrophytes maintain their ecological functions under increasing eutrophication stress ...
... Bashania fargesii is one of the main food sources for giant pandas in the Qinling Mountains and an important part of forest regeneration after cultivation. The species typically invades old fields through clonal rhizome growth, but we lack knowledge on the importance of clonal integration in this response to episodic changes. Here, we first established 25 transects at eight sites to reveal the inv ...
... Background. Walnut (Juglans regia L.) is considered a particularly valuable plant for humans. A number of methods have been developed to select the species’ gene pool that produces high-quality fruits. Breeders need to know which of them ensures identification of the best ancestors. The objective of this work was to compare the effectiveness of the most frequently used techniques for selecting a v ...
... AIM: Soil abiotic and biotic conditions are often spatially variable, challenging plants with a heterogeneous environment consisting of favorable and unfavorable patches of soil. Many stoloniferous clonal plants can escape from unfavorable patches by elongating stolon internodes, but aggregate in favorable ones through shortening stolon internodes. However, whether the connected mother and daughte ...
... Defoliation/grazing and competition could have impacts on growth and spatial expansion of clonal plants. However, how these factors influencing clonal plants spatial expansion in heterogeneous environments remain ambiguous. A pot experiment was conducted to examine the effects of defoliation, intraspecific competition and their interactions on the spatial expansion of Leymus chinensis (Trin.) Tzve ...
... Phenotypic variation of individuals within populations can be influenced by not only genetic diversity and environmental variation experienced by these individuals but also environmental variation experienced by their parents. Although many studies have tested impacts of phenotypic diversity caused by genotypic or species diversity on productivity, no study has assessed the effects of phenotypic d ...
... Management of invasive alien species is a high priority for biodiversity conservation. Here, we studied the effects of glyphosate application, at 0.06 g/m² concentration, on physiologically integrated basal and apical ramets of the invasive clonal plant Carpobrotus edulis. Physiological integration allows the transport of resources and other substances between connected ramets in clonal plants. We ...
... Buffalograss [Buchloe dactyloides (Nutt.) Engelm.] has become the most widely cultivated warm-season turfgrass in northern China because of its low-maintenance requirements. Nitrogen (N) can be applied to plants in a range of formulations. However, preference of nitrogen uptake and the effects of N form on plant growth and nitrogen accumulation has not been established in buffalograss. In this stu ...
... Nutrients are often released heterogeneously over time (e.g., in pulses) in natural habitats. Different genotypes of the same plant species may vary in their responses to temporal nutrient heterogeneity so that temporal nutrient heterogeneity may influence intraspecific interactions. To test effects of temporal nutrient heterogeneity on intra-genet (competition between ramets of the same genotype) ...
... The characteristics of propagules markedly impact the germination and plant growth of submerged macrophytes. Vallisneria spinulosa S.Z. Yan is a common submerged macrophyte and has been widely used in lake restoration projects. The responses of tuber germination and plant growth to different tuber sizes and burial depths are not well known for this species and may vary with light intensity. In thi ...
... Developing for almost half a century, plasmid-construction has explored more than 37 methods. Some methods have evolved into new versions. From a global and evolutionary viewpoint, a review will make a clear understand and an easy practice for plasmid-construction. The 37 methods employ three principles as creating single-strand overhang, recombining homology arms, or serving amplified insert as m ...
Anthropocene epoch; adults; biodiversity; clones; conservation status; environmental indicators; ferns and fern allies; forest habitats; habitat conservation; hydrology; mosses and liverworts; riparian forests; soil; streams; understory; Europe
Abstract:
... The recognition of the ecological quality of ecosystems and habitats therein is increasingly important in the Anthropocene. However, there are still scarcely explored ways of how and what to assess to obtain a sound ecological status of habitats. Ferns are an understudied plant group, especially given their usefulness as ecological indicators. Disentangling biotic and abiotic factors that drive fi ...
... Arugula (Eruca vesicaria subsp. sativa [Miller] Thell., syn. Brassica eruca L.) is an annual cruciferous crop that is increasingly grown for fresh consumption in Serbia. In November 2018, a few detached leaves of cultivated arugula originating from a local producer, showing necrotic lesions, were observed in a fresh vegetable market in Belgrade, Serbia. Information about the disease incidence and ...
Acer platanoides; climate change; clones; females; flowers; forestry; forests; genotype; indigenous species; insect pollination; males; monoecy; phenotypic variation; progeny; protandry; protogyny; reproductive behavior; research; seed orchards; seed set; seed yield; selfing; species diversity; trees; Central European region
Abstract:
... Norway maple (Acer platanoides L.) is a tree species native to Central Europe and occurs in scattered or in small populations mixed with other tree species. Since Norway maple is considered to be adaptable to climate change, it has increasingly become a focus of forestry as one of the so-called alternative tree species to diversify species composition in forests. However, little knowledge exists o ...
Kristin A. Clothier; Katherine D. Watson; Aslı Mete; Federico Giannitti; Mark Anderson; Brandon Munk; Stella McMillin; Deana L. Clifford; Jaime Rudd; Nicholas Shirkey; Dan Famini; Leslie Woods
... From 2014–2019, 8 juvenile black bears (Ursus americanus) from different geographic regions were presented to the California Department of Fish and Wildlife because of emaciation, alopecia, and exfoliative dermatitis that resulted in death or euthanasia. Autopsy and histopathology revealed that all 8 bears had generalized hyperkeratotic dermatitis, folliculitis, and furunculosis. Skin structures w ...
... Sudden death syndrome (SDS) of soybean is a damaging disease caused by the fungus Fusarium virguliforme. Since this pathogen was first reported in the southern U.S. state of Arkansas in 1971, it has spread throughout the midwestern United States. The SDS pathogen primarily colonizes roots but also produces toxins that translocate to and damage leaves. Previous studies have detected little to no ge ...
... The genetic diversity of natural populations is a key factor in the success of long-term ecosystem protection. We studied the genetic diversity and spatial genetic structure (SGS) in three endangered shrub birch (Betula humilis) populations using seven nuclear microsatellite loci. The highest genetic variation was found in the restored Szuszalewo population in Biebrza National Park, where active p ...
Pinus taeda; clones; disease incidence; family structure; fusiform rust; genetic improvement; genetic relationships; genome; genomics; genotyping; marker-assisted selection; plant genetics; single nucleotide polymorphism arrays; Southeastern United States
Abstract:
... We investigated the efficiency of genomic selection in a large clonal population (N = 2023) of Pinus taeda L. The study population comprised 58 families that were tested across eight locations in the southern USA. The clones were genotyped with the Pita50K SNP array. Whole-genome regression models were used to obtain genomic estimated breeding values (GEBVs). The predictive ability of SNP markers ...
Lactococcus garvieae; Mugilidae; clones; electron microscopy; fish; genetic heterogeneity; genotyping; internal transcribed spacers; multigene family; pathogens; phenotype; phylogeny; population structure; pulsed-field gel electrophoresis; vaccines
Abstract:
... Lactococcus garvieae is the etiological agent of Lactococcosis, an evolving disease affecting many fish species and causing significant economic losses worldwide. Assessing pathogen relatedness and bacterial population structure is critical for determining the epidemiology of L. garvieae infections and in establishing effective pathogen management methods. The previously published morphological an ...
Jan Plue; Adam Kimberley; James M. Bullock; Bart Hellemans; Danny A. P. Hooftman; Patricia Krickl; Leen Leus; Gerrit Peeters; Peter Poschlod; Anna Traveset; Filip Volckaert; Sara A. O. Cousins; Olivier Honnay
Galium verum; biodiversity; clones; conservation practices; gene flow; genes; genetic variation; grasslands; green infrastructure; habitats; issues and policy; landscape genetics; landscapes; nestedness; roads; Belgium; Germany; Sweden
Abstract:
... Species may benefit from green infrastructure, i.e. the network of natural and anthropogenic habitat remnants in human‐dominated landscapes, if it helps isolated populations in remaining habitat patches to be functionally connected. The importance of green infrastructure is therefore increasingly emphasized in conservation policy to counter biodiversity loss. However, there is limited evidence, pa ...
Poa pratensis; agronomy; biomass; clones; leaf length; leaf relative water content; leaf width; leaves; soil water; soil water deficit; stable isotopes; water management; xylem
Abstract:
... Understanding the effect of water heterogeneity on the growth and water integration of clonal plants is important for scientific water management. In controlled field plots, we conducted a study by creating three different soil water treatments comprising four patches with different soil water supplies using Kentucky bluegrass (Poa pratensis L.) as the materials. The objective was to explore the d ...
bamboos; biomass; clones; culms; environment; gas exchange; growth retardation; photosynthesis; phytotoxicity; rhizomes; starch; sugars; China
Abstract:
... Regional increases in atmospheric O₃, mainly produced photochemically from anthropogenic precursor gases, have phytotoxicity due to its strong oxidizing properties. To determine the response of bamboo physiology to elevated O₃ levels, three-year-old dwarf bamboo (Indocalamus decorus) clones were exposed to three O₃ concentrations (Ambient-AA, 21.3 to 80.9 ppb in the daytime; −AA+70, 70 ppb O₃ abov ...
... Decreased underwater light availability is one of the most important environmental factors leading to the decline in submersed macrophytes in lakes. However, previous studies mostly focused on a relatively short time scale and lack data on the continuous monitoring of plant life history traits under different light conditions. The present experiment studied the growth, morphology and C/N metabolis ...
... PREMISE: Fecundity and mating outcomes commonly differ among plant populations occupying contrasting environments. If self‐pollination occurs primarily among flowers within plants, contrasting reproductive outcomes among populations must reflect environmental effects on plant‐pollinator interactions. Specifically, local conditions could affect features of plant phenotypes that influence pollinator ...
... Inducible responses to herbivores can be either localized or spread systemically throughout a plant. The ways in which clonal plants integrate their response to herbivores among clonal ramets is not well understood. Yet, this is important to understand the impacts that herbivores may have on clonal plants. We conducted a factorial split-plot greenhouse experiment to determine whether resistance is ...
... Vallisneria natans (Lour.) Hara is a typical macrophyte engineering plant frequently applied in water restoration projects. This study treated V. natans with Gibberellin (GA), and measured its growth features and nutrient element allocation as it grew in high, medium, and low fertility substrates. With GA treatment, V. natans leaf length, leaf biomass, and total biomass increased significantly (p ...
... Dietary free fatty acids induce preadipocyte differentiation in the presence of a hormonal cocktail in 3T3-L1 adipocytes. Plant polyphenols are curb adipocyte differentiation and protect from metabolic stress. In the present study, we examined the effects of the saturated fatty acid, palmitic acid (PA) in presence of flavonoids, chrysin (CR) and hesperidin (HD) and phenolic acid, syringic acid (SY ...
... Brachionus calyciflorus is a recently described monogonont rotifer species complex that comprises four species. The observation of hybridisation between two of these species challenges this species delimitation. The mechanisms of reproductive isolation essential to the maintenance of species integrity remain unclear. Here, we conducted upscaled hybridisation experiments to obtain large numbers of ...
... Climate changes and artificial disturbance in riparian wetlands commonly increase the flooding and nitrogen enrichment in those zones. Functional traits were considered as a potential target for researchers to identify the fitness advantage of invasive species in their habitats. This study aimed to examine the effects of flooding level and N-enrichment on a worldwide noxious invasive weed, Alterna ...
... Elymus repens (L.) Gould), Cirsium arvense (L.) Scop. and Sonchus arvensis L. are important arable creeping perennial weeds in Europe. These are clonal plants with subterranean reproductive organs (E. repens, rhizomes, the two dicots, horizontal creeping roots) sprouting from ramets. We tested the sprouting ability and early growth of ramet sprouts at temperatures typical for Nordic autumn climate ...
... Bacillus coagulans can help ameliorate or prevent gastrointestinal diseases, but the genetic relationships among B. coagulans isolates are not well studied. Multilocus sequence typing analysis was conducted on 57 isolates of B. coagulans from 22 provinces or autonomous regions in China. B. coagulans isolates were highly diverse and a total of 33 (sequence typings) STs were found. These isolates ha ...
... Phyllostachys nigra var. henonis (Poales: Poaceae) is a tall, temperate bamboo species that has a long monocarpic life history with a flowering interval of around 120 years that is often conspicuously synchronized across a wide geographical area. Interestingly, observations of the last major flowering event, which was about a century ago, suggested that mature seeds were rarely produced as a conse ...
... Septoria leaf spot, caused by Septoria lycopersici, is considered one of the most important diseases of tomato in Brazil. Despite its importance, the disease agent is still poorly studied. Septoria isolates collected from different production regions of Brazil were characterized by molecular, morphological, and pathogenic methods. A set of 104 isolates was sequenced for the DNA Tub, Cal, and EF1‐α ...
... Bottom light availability (BLA), represented by the ratio of the Secchi disk depth to water depth (SD/WD), plays a fundamental role in the growth and reproduction of submerged macrophytes. However, studies thus far have mainly explored the interactions between macrophyte responses and BLA through field investigations; this means that knowledge of such responses to various underwater light conditio ...
... Many plant species forage for nutrients by accumulating more biomass or ramets where soil nutrient availability is high. Nutrient foraging ability differs between species and between genotypes within species, can increase plant performance when nutrients are patchy, and may lead to differences in competitive ability and have community-level effects. Effects of intraspecific variation in nutrient f ...
... Contrast and aggregation are two components of spatial heterogeneity. To precisely determine the influence of varying nutrient heterogeneity on the foraging behavior of clonal plants, we selected Potentilla anserina L. as the material and designed different patch patterns, sizes and qualities. In Experiment 1, compared with random and uniform patch patterns, aggregation increased ramet density and ...
... Habitat selection behaviour is an effective strategy adopted by clonal plants in heterogeneous understorey light environments, and it is likely regulated by the parental environment's ultraviolet-B radiation levels (UV-B) due to the photomorphogenesis of UV-B and maternal effects. Here, parental ramets of Duchesnea indica were treated with two UV-B radiation levels [high (UV5 group) and low (UV10 ...
Spartina alterniflora; biomass production; canopy; clones; ecological invasion; ecophysiology; eutrophication; intraspecific competition; invasive species; light intensity; nitrogen; phenotypic plasticity; radiation use efficiency; specific leaf area
Abstract:
... Eutrophication is believed to promote plant invasion, resulting in high growth performances of invasive plants and, therefore, the great potential for growth‐induced intraspecific competition for light. Current hypotheses predict how eutrophication promotes plant invasion but fail to explain how great invasiveness is maintained under eutrophic conditions. In diverse native communities, co‐occurrin ...
... Adaptations to low light and water depth stresses are crucial for the survival of submerged macrophytes. To determine the phenotypic responses of Vallisneria natans to such stresses, we combined a field investigation, a light control experiment and an in situ response experiment to evaluate adaptive variations in fresh weight and morphological and physiological characteristics. In the field invest ...
... Pistia stratiotes is a cadmium (Cd) hyperaccumulating plant with strong bioaccumulation and translocation capacity for Cd. A hydroponic experiment was used to evaluate the combined effect of Zinc (Zn) and Cd at different concentrations on leaf growth and metabolism of P. stratiotes. This study revealed the physiological defense and metabolic strategy of responses to Zn–Cd co-pollution. With the Zn ...
Cynodon dactylon; antioxidant activity; catalase; chlorophyll; clones; peroxidase; reactive oxygen species; salt stress; salt tolerance; stolons
Abstract:
... Connected ramets of colonal plants often suffer from different environmental conditions such as light, nutrient, and stress. Colonal Bermudagrass (Cynodon dactylon [L.] Pers.) can form interconnected ramets and this connection facilitates the tolerance to abiotic stress, which is a kind of physiological integration. However, how bermudagrass responds to heterogeneously distributed salt stress need ...
... Mock strawberry is a valuable ground cover species that has a strong adaptability and high ornamental values. Urban landscape soils are typically heterogeneous and of low fertility. We hypothesized that mock strawberry can grow uniformly in soils with patchy saline conditions because of physiological integration as a clonal species. The objective of this study was to investigate if connected mock ...
... Integrating aspects of larval lepidopteran behavior that enhance survival into conservation plans could increase the overall impact of the efforts. We previously recommended that where possible, maintaining 2–4 ramets of closely-spaced common milkweed would support the development of at least one monarch through pupation, based on a seemingly innate behavior in which monarch larvae (Danaus plexipp ...
Populus tremuloides; chemical defenses; chemical ecology; chemistry; clones; cytotypes; diploidy; food plants; genetic variation; glycosides; leaves; phenotype; phenotypic variation; resource allocation; triploidy; Utah
Abstract:
... Polyploidy, the expression of more than two sets of chromosomes, is common in plants, and is thought to influence plant trait expression and drive plant species evolution. The degree to which polyploidy influences interactions among physiological processes such as growth and defense in natural populations through its effect on phenotypic variability is poorly understood. We link broad plant genoty ...
... Capitella teleta, a marine polychaete that feeds on a refractory diet consisting of sediment, was shown to contain unique gut microbiota comprised of microbial functional groups involved in fermentation. Results of our previous studies showed that C. teleta's core gut microbiota were dominated by propionibacteria, and that these bacteria were more abundant in worms than in sediment and feces. In o ...
... Water disinfection is one of the most important applications of ultraviolet light-emitting diodes (UV-LEDs), though bacterial regrowth remains a serious problem. In this study, we showed that UV-resistant cells, though rare, exist in an Escherichia coli clonal population. The UV-resistance of stationary phase cells was higher than that of exponential phase cells. Regrowth cell populations showed i ...
... Physiological integration may be an important ecological strategy for clonal plants living in heterogeneous environments. The physiological integration between Zoysia japonica parent and offspring ramets under different experimental water conditions was examined. We applied four treatments: (1) both the parents and offspring were well watered, (2) both experienced drought, (3) the parents were wel ...