Importance of autonomous selfing is inversely related to population size and pollinator availability in a monocarpic plant.


PREMISE OF THE STUDY:In animal-pollinated plants, autonomous selfing may provide reproductive assurance when pollinators or reproductive partners are limited. Under such circumstances, the contribution of pollinator-mediated seed set to total seed production also may be more variable compared with situations in which pollinator abundances are high or populations consist of large numbers of individuals. Despite the widespread acceptance of the reproductive assurance hypothesis, only limited empirical evidence exists that autonomous selfing confers reproductive output and guarantees constant seed set under variable pollination environments. METHODS:We performed emasculation experiments in 22 populations of the short-lived, monocarpic plant Centaurium erythraea in a fragmented dune landscape. KEY RESULTS:Floral emasculations resulted in a significantly lower seed set compared with that of intact flowers. Seed set in emasculated flowers also declined significantly with decreasing population size and pollinator availability, whereas seed set of intact flowers did not depend on population size nor on pollinator availability. Variability in seed set among individuals was significantly lower in intact than in emasculated flowers and decreased significantly with increasing population size when flowers were emasculated but not in intact flowers. CONCLUSIONS:These results indicate that pollinator-mediated seed set is strongly dependent both on population size and on pollinator availability but that reproductive assurance through autonomous selfing guarantees relatively constant levels of total seed production, even when populations are small and/or pollinator limited. High variation in seed set of emasculated flowers suggests strong unpredictability in pollinator services in small populations.


Am J Bot


Brys R,de Crop E,Hoffmann M,Jacquemyn H




Has Abstract


2011-11-01 00:00:00














  • Effects of inbreeding on male function and self-fertility in the partially self-incompatible herb Campanula rapunculoides (Campanulaceae).

    abstract::We examined the effect of inbreeding on fitness (through both male and female functions) and changes in self-fertility in the partially self-incompatible species Campanula rapunculoides. Individuals in natural populations of C. rapunculoides varied extensively in their strength of self-incompatibility (SI). We crossed...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Good-Avila SV,Nagel T,Vogler DW,Stephenson AG

    更新日期:2003-12-01 00:00:00

  • Dynamics of gaps, vegetation, and plant species with and without fire.

    abstract:PREMISE OF THE STUDY:Areas lacking dominant plants, or gaps, can support high diversity and specialist species. Previous chronosequence research in Florida rosemary scrub showed indistinct gap area patterns with fire and the dependence of certain species on gaps. We hypothesized that fire and gap size would affect exti...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Menges ES,Crate SJH,Quintana-Ascencio PF

    更新日期:2017-12-01 00:00:00

  • Evolutionary divergence of leaf width and its correlates.

    abstract:UNLABELLED:• PREMISE OF THE STUDY:The question why leaf dimensions vary so much between species has long puzzled ecologists. Presumably, variation arises from selective forces acting on leaf function but which selective forces and which leaf functions? This investigation assesses the consistency of divergence in plant...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Tozer WC,Rice B,Westoby M

    更新日期:2015-03-01 00:00:00

  • Frequency-dependent fitness of hybrids between oilseed rape (Brassica napus) and weedy B. rapa (Brassicaceae).

    abstract::Fitness of interspecific hybrids is sometimes high relative to their parents, despite the conventional belief that they are mostly unfit. F(1) hybrids between oilseed rape (Brassica napus) and weedy B. rapa can be significantly more fit than their weedy parents under some conditions; however, under other conditions th...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Hauser TP,Damgaard C,Jørgensen RB

    更新日期:2003-04-01 00:00:00

  • Development and characterization of 10 microsatellite loci in Paeonia lactiflora (Paeoniaceae).

    abstract:UNLABELLED: PREMISE OF THE STUDY:Microsatellite primers were developed in Paeonia lactiflora for further population genetic studies. • METHODS AND RESULTS:Ten dinucleotide microsatellite markers were developed using an enriched genomic library. They were identified in 58 individuals, and nine markers were also amplif...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Sun J,Yuan J,Wang B,Pan J,Zhang D

    更新日期:2011-09-01 00:00:00

  • Habitat fragmentation threatens wild populations of Carica papaya (Caricaceae) in a lowland rainforest.

    abstract::• Premise of the study: Wild populations of domesticated species constitute a genetic reservoir and are fundamental to the evolutionary potential of species. Wild papaya (Carica papaya) is a rare, short-lived, gap-colonizing, dioecious tree that persists in the forest by continuous dispersal. Theoretically, these life...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Chávez-Pesqueira M,Suárez-Montes P,Castillo G,Núñez-Farfán J

    更新日期:2014-07-01 00:00:00

  • Molecular phylogenetics of Vandeae (Orchidaceae) and the evolution of leaflessness.

    abstract::Members of tribe Vandeae (Orchidaceae) form a large, pantropical clade of horticulturally important epiphytes. Monopodial leafless members of Vandeae have undergone extreme reduction in habit and represent a novel adaptation to the canopy environment in tropical Africa, Asia, and America. To study the evolution of mon...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Carlsward BS,Whitten WM,Williams NH,Bytebier B

    更新日期:2006-05-01 00:00:00

  • Effect of salinity on growth, ion content, and cell wall chemistry in Atriplex prostrata (Chenopodiaceae).

    abstract::Atriplex prostrata Boucher, a facultative halophyte, exhibits significant reduction in height and biomass and in the width of the cortex and vascular tissue under saline conditions. Therefore, the goal of this investigation was to determine the effect of salinity on plant growth as well as on the patterns of lignifica...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Wang L,Showalter A,Ungar I

    更新日期:1997-09-01 00:00:00

  • Paraphyly changes understanding of timing and tempo of diversification in subtribe Hakeinae (Proteaceae), a giant Australian plant radiation.

    abstract:PREMISE OF THE STUDY:Subtribe Hakeinae (526 spp.) represents a large Australian plant radiation central to our understanding of that flora's evolution and ecology. It contains Grevillea-the third largest plant genus in Australia and a group inferred to have among the highest diversification rates in the angiosperms. Ho...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Mast AR,Olde PM,Makinson RO,Jones E,Kubes A,Miller ET,Weston PH

    更新日期:2015-10-01 00:00:00

  • Phylogeny and biogeography of exindusiate Andean Polystichum (Dryopteridaceae).

    abstract:PREMISE OF THE STUDY:Uplift of the tropical Andes had a significant impact on the diversification of South American flora and fauna. Recent biogeographic inquiries have established patterns of Andean divergence, but investigations on ferns are scant. The fern genus Polystichum Roth (Dryopteridaceae) combines widespread...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: McHenry MA,Barrington DS

    更新日期:2014-02-01 00:00:00

  • Climatic niche comparison among ploidal levels in the classic autopolyploid system, Galax urceolata.

    abstract:PREMISE OF THE STUDY:Autopolyploidy, or whole-genome duplication within a species, leads to closely related cytotypes in one geographic location. One hypothesized mechanism by which autopolyploids become established is climatic niche divergence from their diploid progenitor. Here we tested this hypothesis in diploid, t...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Gaynor ML,Marchant DB,Soltis DE,Soltis PS

    更新日期:2018-10-01 00:00:00

  • Immunocytochemical characterization of tension wood: Gelatinous fibers contain more than just cellulose.

    abstract::Gelatinous fibers (G-fibers) are the active component of tension wood. G-fibers are unlike traditional fiber cells in that they possess a thick, nonlignified gelatinous layer (G-layer) internal to the normal secondary cell wall layers. For the past several decades, the G-layer has generally been presumed to be compose...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Bowling AJ,Vaughn KC

    更新日期:2008-06-01 00:00:00

  • Patterns and determinants of potential carbon gain in the C3 evergreen Yucca glauca (Liliaceae) in a C4 grassland.

    abstract::Yucca glauca is a C(3) evergreen rosette species locally common in the C(4)-dominated grasslands of the central Great Plains. Most congeners of Y. glauca are found in deserts, and Y. glauca's morphological similarities to desert species (steeply angled leaves, evergreen habit) may be critical to its success in grassla...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Maragni LA,Knapp AK,McAllister CA

    更新日期:2000-02-01 00:00:00

  • Bioclimatic factors at an intrabiome scale are more limiting than cyanobiont availability for the lichen-forming genus Peltigera.

    abstract:PREMISE OF THE STUDY:Factors shaping spatiotemporal patterns of associations in mutualistic systems are poorly understood. We used the lichen-forming fungi Peltigera and their cyanobacterial partners Nostoc to investigate the spatial structure of this symbiosis at an intrabiome scale and to identify potential factors s...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Lu J,Magain N,Miadlikowska J,Coyle JR,Truong C,Lutzoni F

    更新日期:2018-07-01 00:00:00

  • Structural correlates of imbibitional injury in Typha pollen.

    abstract::The ultrastructure of Typha latifolia pollen was examined as a function of pollen moisture content and incubation temperature, in order to identify possible lesions induced by imbibitional chilling. A syndrome of structural traits was found which characterizes damaged grains. Compared to viable grains, the protoplas...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Sack FD,Leopold AC,Hoekstra FA

    更新日期:1988-01-01 00:00:00

  • Phylogenomic analysis of transcriptome data elucidates co-occurrence of a paleopolyploid event and the origin of bimodal karyotypes in Agavoideae (Asparagaceae).

    abstract:PREMISE OF THE STUDY:The stability of the bimodal karyotype found in Agave and closely related species has long interested botanists. The origin of the bimodal karyotype has been attributed to allopolyploidy, but this hypothesis has not been tested. Next-generation transcriptome sequence data were used to test whether ...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: McKain MR,Wickett N,Zhang Y,Ayyampalayam S,McCombie WR,Chase MW,Pires JC,dePamphilis CW,Leebens-Mack J

    更新日期:2012-02-01 00:00:00

  • Petrofilaments in palynological preparations.

    abstract::Microscopic structures (petrofilaments) may develop during palynological laboratory processing procedures that are superficially similar to secondary wall thickenings and elaters. These filaments form from angular bodies that resemble fungal spores and resin bodies. The angular bodies are a type of hydrocarbon called ...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Graham A,Wood GD,Elsik WC,Speed RC

    更新日期:2000-05-01 00:00:00

  • Cytotype distribution patterns, ecological differentiation, and genetic structure in a diploid-tetraploid contact zone of Cardamine amara.

    abstract:UNLABELLED:• PREMISE OF THE STUDY:Contact zones between diploids and their autopolyploid descendants represent a unique evolutionary venue for studying polyploid establishment, cytotype coexistence, and interactions. Here, we examine cytotype coexistence in a diploid-tetraploid contact zone of a perennial herb, Cardam...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Zozomová-Lihová J,Malánová-Krásná I,Vít P,Urfus T,Senko D,Svitok M,Kempa M,Marhold K

    更新日期:2015-08-01 00:00:00

  • Estimating near-infrared leaf reflectance from leaf structural characteristics.

    abstract::The relationship between near-infrared reflectance at 800 nm (NIRR) from leaves and characteristics of leaf structure known to affect photosynthesis was investigated in 48 species of alpine angiosperms. This wavelength was selected to discriminate the effects of leaf structure vs. chemical or water content on leaf ref...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Slaton MR,Raymond Hunt E Jr,Smith WK

    更新日期:2001-02-01 00:00:00

  • Building the monocot tree of death: Progress and challenges emerging from the macrofossil-rich Zingiberales.

    abstract:PREMISE OF THE STUDY:Inclusion of fossils in phylogenetic analyses is necessary in order to construct a comprehensive "tree of death" and elucidate evolutionary history of taxa; however, such incorporation of fossils in phylogenetic reconstruction is dependent on the availability and interpretation of extensive morphol...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Smith SY,Iles WJD,Benedict JC,Specht CD

    更新日期:2018-08-01 00:00:00

  • New findings on the pollination biology of Mauritia flexuosa (Arecaceae) in Roraima, Brazil: linking dioecy, wind, and habitat.

    abstract:UNLABELLED: PREMISE OF THE STUDY:Despite the ecological, economic, and cultural importance of the palm Mauritia flexuosa in Amazonia, knowledge of its reproductive biology is scarce. Previous observations of this species suggested beetles as the probable pollinator, but experimental work to confirm this hypothesis was...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Khorsand Rosa R,Koptur S

    更新日期:2013-03-01 00:00:00

  • Microsatellite markers for Hylocomium splendens (Hylocomiaceae).

    abstract:PREMISE OF THE STUDY:The perennial feather moss Hylocomium splendens is one of the most widely distributed and common bryophytes in the Northern Hemisphere and has, because of its capacity to grow under a wide range of environmental conditions, been used as a biomonitor for atmospheric metal deposition in Europe. METH...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Vik U,Halvorsen R,Ohlson M,Rydgren K,Carlsen T,Korpelainen H,Kauserud H

    更新日期:2012-09-01 00:00:00

  • Basal cactus phylogeny: implications of Pereskia (Cactaceae) paraphyly for the transition to the cactus life form.

    abstract::The cacti are well-known desert plants, widely recognized by their specialized growth form and essentially leafless condition. Pereskia, a group of 17 species with regular leaf development and function, is generally viewed as representing the "ancestral cactus," although its placement within Cactaceae has remained unc...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Edwards EJ,Nyffeler R,Donoghue MJ

    更新日期:2005-07-01 00:00:00

  • Structure and development of the pitchers from the carnivorous plantNepenthes alata (Nepenthaceae).

    abstract::The pitchers of the tropical carnivorous plant Nepenthes alata are highly specialized organs for the attraction and capture of insects and absorption of nutrients from them. This study examined the structure and development of these pitchers, with particular focus on the nectaries and digestive glands. Immature pitche...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Owen TP Jr,Lennon KA

    更新日期:1999-10-01 00:00:00

  • Pre-pollination barriers between two sympatric Arisaema species in northern Shikoku Island, Japan.

    abstract:PREMISE:The genus Arisaema (Araceae) has rapidly diversified in Japan, and multiple species often coexist in the field. Although Japanese Arisaema species hybridize from artificial crossing, hybrid individuals are rare in mixed populations; suggesting the presence of effective pre-pollination barriers. We examined the ...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Matsumoto TK,Miyazaki Y,Sueyoshi M,Senda Y,Yamada K,Hirobe M

    更新日期:2019-12-01 00:00:00

  • Similarities and differences in intrapopulation trait correlations of co-occurring tree species: consistent water-use relationships amid widely different correlation patterns.

    abstract:PREMISE OF THE STUDY:General relationships among functional traits have been identified across species, but the forces shaping these relationships remain largely unknown. Adopting an approach from evolutionary biology, we studied similarities and differences in intrapopulation trait correlations among locally co-occurr...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Messier J,Violle C,Enquist BJ,Lechowicz MJ,McGill BJ

    更新日期:2018-09-01 00:00:00

  • Emergent properties of plants competing in silico for space and light: Seeing the tree from the forest.

    abstract::A spatially explicit, reiterative algorithm (SERA) is presented and used to predict multiple aspects of plant population and community dynamics. Using simple physical principles and empirically derived relationships, SERA provides an analytical venue to test alternative hypotheses about individual functional traits go...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Hammond ST,Niklas KJ

    更新日期:2009-08-01 00:00:00

  • Genetic and cytological analyses of a partial-female-sterile mutant (PS-1) in soybean (Glycine max; Leguminosae).

    abstract::Soybean partial-female-sterile mutant 1 (PS-1) was recovered from a gene-tagging study. The objectives were to study the inheritance, linkage, allelism, and certain aspects of the reproductive biology of the PS-1 mutant. For inheritance and linkage tests, PS-1 was crossed to flower color mutant Harosoy-w4 and to chlor...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Pereira T,Lersten N,Palmer R

    更新日期:1997-06-01 00:00:00

  • Scaling relations for a functionally two-dimensional plant: Chamaesyce setiloba (Euphorbiaceae).

    abstract::Many characteristics of plants and animals scale with body size as described by allometric equations of the form Y = βM(α), where Y is an attribute of the organism, β is a coefficient that varies with attribute, M is a measure of organism size, and α is another constant, the scaling exponent. In current models, the fr...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Koontz TL,Petroff A,West GB,Brown JH

    更新日期:2009-05-01 00:00:00

  • The response of arbuscular mycorrhizae to fertilization, mowing, and removal of dominant species in a diverse oligotrophic wet meadow.

    abstract::In a wet oligotrophic meadow located in the Czech Republic, a factorial experiment with treatments consisting of fertilization, mowing, and removal of the dominant species (Molinia caerulea) was established in 1994. In 1997 Holcus lanatus, Molinia caerulea, Potentilla erecta, Prunella vulgaris, and Ranunculus auricomu...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Titus JH,Leps J

    更新日期:2000-03-01 00:00:00