Complex distribution patterns, ecology and coexistence of ploidy levels of Allium oleraceum (Alliaceae) in the Czech Republic.

Abstract:

BACKGROUND AND AIMS:Despite extensive study of polyploidy, its origin, and ecogeographical differences between polyploids and their diploid progenitors, few studies have addressed ploidy-level structure and patterns of ecogeographical differentiation at various spatial scales using detailed sampling procedures. The pattern of coexistence of polyploids in the geophyte Allium oleraceum at the landscape and locality scale and their ecology were studied. METHODS:Flow cytometry and root-tip squashes were used to identify the ploidy level of 4347 plants from 325 populations sampled from the Czech Republic using a stratified random sampling procedure. Ecological differentiation among ploidy levels was tested by comparing sets of environmental variables recorded at each locality. KEY RESULTS:Across the entire sampling area, pentaploids (2n = 5x = 40) predominated, while hexaploids (2n = 6x = 48) and tetraploids (2n = 4x = 32) were less frequent. The distribution of tetra- and hexaploids was partially sympatric (in the eastern part) to parapatric (in the western part of the Czech Republic) whereas pentaploids were sympatric with other cytotypes. Plants of different ploidy levels were found to be ecologically differentiated and the ruderal character of cytotypes increased in the direction 4x --> 5x --> 6x with the largest realized niche differences between tetra- and hexaploids. Most populations contained only one ploidy level (77 %), 22 % had two (all possible combinations) and 1 % were composed of three ploidy levels. The majority of 4x + 5x and 5x + 6x mixed populations occurred in sympatry with uniform populations of the participating cytotypes in sites with ecologically heterogeneous or marginal environment, suggesting secondary contact between cytotypes. Some mixed 4x + 6x populations dominated by tetraploids being sympatric and intermixed with uniform 4x populations might represent primary zones of cytotype contact. Almost no mixed accessions were observed on the fine spatial scale in mixed populations. CONCLUSIONS:The results provide evidence for adaptive differences among ploidy levels, which may contribute to their complex distribution pattern. The prevalence of asexual reproduction, limited dispersal and equilibrium-disrupting processes may support local coexistence of cytotypes.

journal_name

Ann Bot

journal_title

Annals of botany

authors

Duchoslav M,Safárová L,Krahulec F

doi

10.1093/aob/mcq035

subject

Has Abstract

pub_date

2010-05-01 00:00:00

pages

719-35

issue

5

eissn

0305-7364

issn

1095-8290

pii

mcq035

journal_volume

105

pub_type

杂志文章
  • Floral polymorphism in Chamaecrista flexuosa (Fabaceae-Caesalpinioideae): a possible case of atypical enantiostyly?

    abstract:BACKGROUND AND AIMS:Reciprocal herkogamy, including enantiostyly and heterostyly, involves reciprocity in the relative positions of the sexual elements within the flower. Such systems result in morphologically and, since pollen is deposited on and captured from different parts of the pollinator, functionally distinct f...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mct188

    authors: Almeida NM,Castro CC,Leite AV,Novo RR,Machado IC

    更新日期:2013-10-01 00:00:00

  • Quantification of light interception within image-based 3-D reconstruction of sole and intercropped canopies over the entire growth season.

    abstract:BACKGROUND AND AIMS:Light interception is closely related to canopy architecture. Few studies based on multi-view photography have been conducted in a field environment, particularly studies that link 3-D plant architecture with a radiation model to quantify the dynamic canopy light interception. In this study, we comb...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcaa046

    authors: Zhu B,Liu F,Xie Z,Guo Y,Li B,Ma Y

    更新日期:2020-09-14 00:00:00

  • Dynamic thermal time model of cold hardiness for dormant grapevine buds.

    abstract:BACKGROUND AND AIMS:Grapevine (Vitis spp.) cold hardiness varies dynamically throughout the dormant season, primarily in response to changes in temperature. The development and possible uses of a discrete-dynamic model of bud cold hardiness for three Vitis genotypes are described. METHODS:Iterative methods were used t...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcq263

    authors: Ferguson JC,Tarara JM,Mills LJ,Grove GG,Keller M

    更新日期:2011-03-01 00:00:00

  • Leaf structural and photosynthetic characteristics, and biomass allocation to foliage in relation to foliar nitrogen content and tree size in three Betula species.

    abstract::Young trees 0.03-1.7 m high of three coexisting Betula species were investigated in four sites of varying soil fertility, but all in full daylight, to separate nutrient and plant size controls on leaf dry mass per unit area (MA), light-saturated foliar photosynthetic electron transport rate (J) and the fraction of pla...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcf025

    authors: Niinemets U,Portsmuth A,Truus L

    更新日期:2002-02-01 00:00:00

  • Kinetics of ethanol and acetaldehyde release suggest a role for acetaldehyde production in tolerance of rice seedlings to micro-aerobic conditions.

    abstract:BACKGROUND AND AIMS:This paper examines the basis of the greater tolerance of an indica rice cultivar FR13A to complete submergence compared with relatively intolerant japonica rice CT6241. We study whether this superior tolerance is related to its greater tolerance to O2 shortage and to an ability to run a more favour...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mci224

    authors: Boamfa EI,Veres AH,Ram PC,Jackson MB,Reuss J,Harren FJ

    更新日期:2005-09-01 00:00:00

  • Root signals and stomatal closure in relation to photosynthesis, chlorophyll a fluorescence and adventitious rooting of flooded tomato plants.

    abstract:BACKGROUND AND AIMS:An investigation was carried out to determine whether stomatal closure in flooded tomato plants (Solanum lycopersicum) results from decreased leaf water potentials (psi(L)), decreased photosynthetic capacity and attendant increases in internal CO(2) (C(i)) or from losses of root function such as cyt...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcn208

    authors: Else MA,Janowiak F,Atkinson CJ,Jackson MB

    更新日期:2009-01-01 00:00:00

  • Phytochrome B enhances plant growth, biomass and grain yield in field-grown maize.

    abstract:BACKGROUND AND AIMS:Phytochrome B (phyB) is a photosensory receptor important for the control of plant plasticity and resource partitioning. Whether phyB is required to optimize plant biomass accumulation in agricultural crops exposed to full sunlight is unknown. Here we investigated the impact of mutations in the gene...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcz015

    authors: Wies G,Mantese AI,Casal JJ,Maddonni GÁ

    更新日期:2019-06-24 00:00:00

  • Analysis of Beta-D-glucan Biosynthetic Genes in Oat Reveals Glucan Synthesis regulation by Light.

    abstract:BACKGROUND AND AIMS:Oat (Avena sativa) has human health benefits when consumed as a whole-grain food, attributed to the high content of (1,3;1,4)-β-d-glucan (mixed-linkage glucan [MLG]), but little is known about the synthase genes and synthesis mechanism of MLG polysaccharides in this species. METHODS:The concentrati...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcaa185

    authors: Zhang J,Yan L,Liu M,Guo G,Wu B

    更新日期:2020-10-22 00:00:00

  • Phenology of flowering and starch accumulation in grape (Vitis vinifera L.) cuttings and vines.

    abstract:BACKGROUND AND AIMS:A reliable protocol for flowering and fruiting in cuttings was developed with the aim of (a) studying inflorescence and flower development in grapevine cuttings and field plants, and (b) assisting haploid plant production. METHODS:Inflorescence and flower development was studied in 'Gewurztraminer'...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mci108

    authors: Lebon G,Duchêne E,Brun O,Clément C

    更新日期:2005-05-01 00:00:00

  • The effects of salinity and sodicity upon nodulation and nitrogen fixation in chickpea (Cicer arietinum).

    abstract::Production of grain legumes is severely reduced in salt-affected soils because their ability to form and maintain nitrogen-fixing nodules is impaired by both salinity and sodicity (alkalinity). Genotypes of chickpea, Cicer arietinum, with high nodulation capacity under stress were identified by field screening in a so...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcf097

    authors: Rao DL,Giller KE,Yeo AR,Flowers TJ

    更新日期:2002-05-01 00:00:00

  • Origin and emergence of the sweet dessert watermelon, Citrullus lanatus.

    abstract:BACKGROUND AND AIMS:Watermelons, Citrullus species (Cucurbitaceae), are native to Africa and have been cultivated since ancient times. The fruit flesh of wild watermelons is watery, but typically hard-textured, pale-coloured and bland or bitter. The familiar sweet dessert watermelons, C. lanatus, featuring non-bitter, ...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcv077

    authors: Paris HS

    更新日期:2015-08-01 00:00:00

  • Flowering phenology and wind-pollination efficacy of heterodichogamous Juglans mandshurica (Juglandaceae).

    abstract:BACKGROUND AND AIMS:Heterodichogamy differs from normal dichogamy, in that it involves two mating types (protogyny and protandry) that occur at a 1 : 1 ratio in a population. Flowering phases of the two mating types are synchronized and reciprocal, which was considered to ensure between-type outcrossing. This study aim...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcl111

    authors: Bai WN,Zeng YF,Liao WJ,Zhang DY

    更新日期:2006-08-01 00:00:00

  • A comparison between the record height-to-stem diameter allometries of Pachycaulis and Leptocaulis species.

    abstract:BACKGROUND AND AIMS:The interspecific allometry of maximum plant height (Hmax) with respect to maximum basal stem diameter (Dmax) has been studied for leptocaulis dicot and conifer tree species. In contrast, virtually nothing is known about the interspecific allometry of pachycaulis species. Here, the interspecific all...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcj002

    authors: Niklas KJ,Cobb ED,Marler T

    更新日期:2006-01-01 00:00:00

  • Cytogenetic and molecular evidence suggest multiple origins and geographical parthenogenesis in Nothoscordum gracile (Alliaceae).

    abstract:BACKGROUND AND AIMS:Nothoscordum gracile is an apomitic tetraploid widely distributed throughout the Americas and naturalized in many temperate regions of other continents. It has been suggested to form a species complex with sexual and apomictic N. nudicaule and N. macrostemon. Tetraploids of these species also share ...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcs020

    authors: Souza LG,Crosa O,Speranza P,Guerra M

    更新日期:2012-04-01 00:00:00

  • Assessment of the validity of the sections in Musa (musaceae) using AFLP.

    abstract::Musa L. (Musaceae) is currently separated into five sections (Musa. Rhodochlamys, Callimusa, Australimusa and Ingentimusa) based on chromosome numbers and morphological characters. However, the validation of this classification system is questioned due to the common occurrence of hybridizations across sections and the...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcf170

    authors: Wong C,Kiew R,Argent G,Set O,Lee SK,Gan YY

    更新日期:2002-08-01 00:00:00

  • Phylogeny, biogeography and ecological diversification of Sarcocornia (Salicornioideae, Amaranthaceae).

    abstract:BACKGROUND AND AIMS:Sarcocornia comprises about 28 species of perennial succulent halophytes distributed worldwide, mainly in saline environments of warm-temperate and subtropical regions. The genus is characterized by strongly reduced leaves and flowers, which cause taxonomic difficulties; however, species in the genu...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcu260

    authors: Steffen S,Ball P,Mucina L,Kadereit G

    更新日期:2015-02-01 00:00:00

  • Dormancy as exaptation to protect mimetic seeds against deterioration before dispersal.

    abstract:BACKGROUND AND AIMS:Mimetic seeds simulate the appearance of fleshy fruits and arilled seeds without producing nutritive tissues as a reward for seed dispersers. In this strategy of seed dispersal, seeds may remain attached to the mother plant for long periods after maturity, increasing their availability to naïve seed...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcq068

    authors: Brancalion PH,Novembre AD,Rodrigues RR,Marcos Filho J

    更新日期:2010-06-01 00:00:00

  • Carbon dioxide enrichment does not reduce leaf longevity or alter accumulation of carbon reserves in the woodland spring ephemeral Erythronium americanum.

    abstract:BACKGROUND AND AIMS:Woodland spring ephemerals exhibit a relatively short epigeous growth period prior to canopy closure. However, it has been suggested that leaf senescence is induced by a reduction in the carbohydrate sink demand, rather than by changes in light availability. To ascertain whether a potentially higher...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcn161

    authors: Gutjahr S,Lapointe L

    更新日期:2008-11-01 00:00:00

  • Isolation and functional characterization of CsLsi2, a cucumber silicon efflux transporter gene.

    abstract:Background and Aims:Silicon has been proven to exert beneficial effects on plant growth and stress tolerance, and silicon accumulation varies among different plant species. Cucumber (Cucumis sativus) is a widely used dicot model for silicon accumulation, but little is known about the molecular mechanism of its silicon ...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcy103

    authors: Sun H,Duan Y,Qi X,Zhang L,Huo H,Gong H

    更新日期:2018-09-24 00:00:00

  • Among-species differences in pollen quality and quantity limitation: implications for endemics in biodiverse hotspots.

    abstract:BACKGROUND AND AIMS:Insufficient pollination is a function of quantity and quality of pollen receipt, and the relative contribution of each to pollen limitation may vary with intrinsic plant traits and extrinsic ecological properties. Community-level studies are essential to evaluate variation across species in quality...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mct213

    authors: Alonso C,Navarro-Fernández CM,Arceo-Gómez G,Meindl GA,Parra-Tabla V,Ashman TL

    更新日期:2013-11-01 00:00:00

  • Quantifying the contribution of bent shoots to plant photosynthesis and biomass production of flower shoots in rose (Rosa hybrida) using a functional-structural plant model.

    abstract:BACKGROUND AND AIMS:The success of using bent shoots in cut-rose (Rosa hybrida) production to improve flower shoot quality has been attributed to bent shoots capturing more light and thus providing more assimilates for flower shoot growth. We aimed at quantifying this contribution of photosynthesis by bent shoots to fl...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcz150

    authors: Zhang N,van Westreenen A,Evers JB,Anten NPR,Marcelis LFM

    更新日期:2020-09-14 00:00:00

  • Large clones on cliff faces: expanding by rhizomes through crevices.

    abstract:BACKGROUND AND AIMS:Large clones of rhizomatous plants are found in many habitats, but little is known about whether such clones also occur on cliff faces where environmental conditions are extremely harsh and heterogeneous. METHODS:Using molecular (intersimple sequence repeat, ISSR) markers, the genotypic composition...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcm086

    authors: Liu FH,Yu FH,Liu WS,Krüsi BO,Cai XH,Schneller JJ,Dong M

    更新日期:2007-07-01 00:00:00

  • The enigma of sex allocation in Selaginella.

    abstract:Background and Aims:The division of resource investment between male and female functions is poorly known for land plants other than angiosperms. The ancient lycophyte genus Selaginella is similar in some ways to angiosperms (in heterospory and in having sex allocation occur in the sporophyte generation, for example) b...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcx163

    authors: Petersen KB,Burd M

    更新日期:2018-02-12 00:00:00

  • Successive microsporogenesis affects pollen aperture pattern in the tam mutant of Arabidopsis thaliana.

    abstract:BACKGROUND AND AIMS:The tam (tardy asynchronous meiosis) mutant of Arabidopsis thaliana, which exhibits a modified cytokinesis with a switch from simultaneous to successive cytokinesis, was used to perform a direct test of the implication of cytokinesis in aperture-pattern ontogeny of angiosperm pollen grains. The aper...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcr074

    authors: Albert B,Raquin C,Prigent M,Nadot S,Brisset F,Yang M,Ressayre A

    更新日期:2011-06-01 00:00:00

  • Distribution and habitat segregation on different spatial scales among diploid, tetraploid and hexaploid cytotypes of Senecio carniolicus (Asteraceae) in the Eastern Alps.

    abstract:BACKGROUND AND AIMS:The spatial distribution of cytotypes can provide valuable insights into evolutionary patterns of polyploid complexes. In a previous study the macro-scale distribution of the three main cytotypes in Senecio carniolicus (Asteraceae) within the Eastern Alps was characterized. Employing a roughly 12-fo...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcq192

    authors: Sonnleitner M,Flatscher R,Escobar García P,Rauchová J,Suda J,Schneeweiss GM,Hülber K,Schönswetter P

    更新日期:2010-12-01 00:00:00

  • A stochastic model of tree architecture and biomass partitioning: application to Mongolian Scots pines.

    abstract:BACKGROUND AND AIMS:Mongolian Scots pine (Pinus sylvestris var. mongolica) is one of the principal species used for windbreak and sand stabilization in arid and semi-arid areas in northern China. A model-assisted analysis of its canopy architectural development and functions is valuable for better understanding its beh...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcq218

    authors: Wang F,Kang M,Lu Q,Letort V,Han H,Guo Y,de Reffye P,Li B

    更新日期:2011-04-01 00:00:00

  • Linking carbon supply to root cell-wall chemistry and mechanics at high altitudes in Abies georgei.

    abstract:BACKGROUND AND AIMS:The mobile carbon supply to different compartments of a tree is affected by climate, but its impact on cell-wall chemistry and mechanics remains unknown. To understand better the variability in root growth and biomechanics in mountain forests subjected to substrate mass movement, we investigated roo...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcq237

    authors: Genet M,Li M,Luo T,Fourcaud T,Clément-Vidal A,Stokes A

    更新日期:2011-02-01 00:00:00

  • Use or abuse of bioinformatic tools: a response to Samach.

    abstract::In a recent paper, we described for the first time the effects of fruit on the expression of putative homologues of genes involved in flowering pathways. It was our aim to provide insight into the molecular mechanisms underlying alternate bearing in citrus. However, a bioinformatics-based critique of our and other rel...

    journal_title:Annals of botany

    pub_type: 评论,杂志文章

    doi:10.1093/aob/mct020

    authors: Muñoz-Fambuena N,Mesejo C,González-Mas MC,Primo-Millo E,Agustí M,Iglesias DJ

    更新日期:2013-03-01 00:00:00

  • Variation in the functioning of autonomous self-pollination, pollinator services and floral traits in three Centaurium species.

    abstract:BACKGROUND AND AIMS:Reproductive assurance through autonomous selfing is thought to be one of the main advantages of self-fertilization in plants. Floral mechanisms that ensure autonomous seed set are therefore more likely to occur in species that grow in habitats where pollination is scarce and/or unpredictable. METH...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcr032

    authors: Brys R,Jacquemyn H

    更新日期:2011-05-01 00:00:00

  • Museomics resolve the systematics of an endangered grass lineage endemic to north-western Madagascar.

    abstract:BACKGROUND AND AIMS:Recent developments in DNA sequencing, so-called next-generation sequencing (NGS) methods, can help the study of rare lineages that are known from museum specimens. Here, the taxonomy and evolution of the Malagasy grass lineage Chasechloa was investigated with the aid of NGS. METHODS:Full chloropla...

    journal_title:Annals of botany

    pub_type: 杂志文章

    doi:10.1093/aob/mcw208

    authors: Silva C,Besnard G,Piot A,Razanatsoa J,Oliveira RP,Vorontsova MS

    更新日期:2017-02-01 00:00:00