Evolutionary divergence of leaf width and its correlates.


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 traits and habitat variables in association with leaf width divergence in the flora of NSW, Australia.• METHODS:More than 80 traits and habitat variables were measured for 25 independent evolutionary divergence events (PICs). Each PIC was represented by two related plant species that had diverged substantially in leaf width. Outgroup species provided indications of the direction of divergence. Most PICs were within genus, so divergences represent relatively recent evolutionary events.• KEY RESULTS:No plant traits or habitat variables were 100% consistently associated with a divergence in leaf width, and surprisingly few diverged in a consistent direction significantly more than what might be expected by chance. This surprising lack of consistent divergence with leaf width contrasted with the result that many of these traits and habitat variables were correlated with leaf width across all species in our data set and in line with correlations reported from other studies. Subcategorizing PICs according to the probable direction of leaf width divergence did not improve consistency.• CONCLUSIONS:These results indicate that evolutionarily recent leaf width divergence events are not tightly tied to divergences in other leaf traits or in environmental situations, despite the broad correlations that have been observed across many species. Rather, cross species correlations are underpinned by earlier divergence events in the phylogeny.


Am J Bot


Tozer WC,Rice B,Westoby M




Has Abstract


2015-03-01 00:00:00














  • Polymorphic microsatellite loci from Dacryodes edulis (Burseraceae), a Central African rainforest and fruit-tree species.

    abstract:PREMISE OF THE STUDY:Microsatellite markers were isolated and characterized from Dacryodes edulis (Burseraceae), a tropical rainforests fruit tree of central Africa. METHODS AND RESULTS:Using an enrichment protocol, six microsatellites loci were developed from Dacryodes edulis. We investigated polymorphism using 45 tr...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Benoit L,Born C,Vignes H,Chevallier MH,Todou G,Debain C,Joly HI

    更新日期:2011-04-01 00:00:00

  • Plastid genomes reveal recurrent formation of allopolyploid Fragaria.

    abstract:PREMISE OF THE STUDY:Recurrent formation of polyploid taxa is a common observation in many plant groups. Haploid, cytoplasmic genomes like the plastid genome can be used to overcome the problem of homeologous genes and recombination in polyploid taxa. Fragaria (Rosaceae) contains several octo- and decaploid species. We...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Dillenberger MS,Wei N,Tennessen JA,Ashman TL,Liston A

    更新日期:2018-05-01 00:00:00

  • Mycorrhizal fungi and parasitic plants: Reply.

    abstract::In a recent study (American Journal of Botany 97: 730-737), we described the first case of a tripartite association in natural conditions among a holoparasitic plant (Cytinus), its host Cistaceae species, and mycorrhizal fungi at an anatomical level. In a letter to the editor, Brundrett (American Journal of Botany 98:...

    journal_title:American journal of botany

    pub_type: 评论,杂志文章


    authors: de Vega C,Arista M,Ortiz PL,Talavera S

    更新日期:2011-04-01 00:00:00

  • Shift from bird to butterfly pollination in Clivia (Amaryllidaceae).

    abstract:PREMISE OF THE STUDY:Pollinator shifts have been implicated as a driver of divergence in angiosperms. We tested the hypothesis that there was a transition from bird- to butterfly pollination in the African genus Clivia (Amaryllidaceae) and investigated how floral traits may have been either modified or retained during ...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Kiepiel I,Johnson SD

    更新日期:2014-01-01 00:00:00

  • Invasive congeners are unlikely to hybridize with native Hawaiian Bidens (Asteraceae).

    abstract:UNLABELLED: PREMISE OF THE STUDY:Invasive plant species threaten native plants in multiple ways, one of which is genetic assimilation through hybridization. However, information regarding hybridization between related alien and native plant species is generally lacking. In Hawaii, the invasive Central American species...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Knope ML,Pender RJ,Crawford DJ,Wieczorek AM

    更新日期:2013-06-01 00:00:00

  • The nature of serpentine endemism.

    abstract::Serpentine soils are a model system for the study of plant adaptation, speciation, and species interactions. Serpentine soil is an edaphically stressful, low productivity soil type that hosts stunted vegetation and a spectacular level of plant endemism. One of the first papers on serpentine plant endemism was by Arthu...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Anacker BL

    更新日期:2014-02-01 00:00:00

  • Phylogenetic relationships in subfamily Tillandsioideae (Bromeliaceae) based on DNA sequence data from seven plastid regions.

    abstract::Molecular phylogenetic studies of seven plastid DNA regions were used to resolve circumscriptions at generic and infrageneric levels in subfamily Tillandsioideae of Bromeliaceae. One hundred and ten tillandsioid samples were analyzed, encompassing 10 genera, 104 species, and two cultivars. Two species of Bromelioideae...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Barfuss MH,Samuel R,Till W,Stuessy TF

    更新日期:2005-02-01 00:00:00

  • Agathis trees of Patagonia's Cretaceous-Paleogene death landscapes and their evolutionary significance.

    abstract:PREMISE OF THE STUDY:The fossil record of Agathis historically has been restricted to Australasia. Recently described fossils from the Eocene of Patagonian Argentina showed a broader distribution than found previously, which is reinforced here with a new early Paleocene Agathis species from Patagonia. No previous phylo...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Escapa IH,Iglesias A,Wilf P,Catalano SA,Caraballo-Ortiz MA,Rubén Cúneo N

    更新日期:2018-08-01 00:00:00

  • Remnants of populations provide effective source material for reintroduction of an endangered Hawaiian plant, Schiedea kaalae (Caryophyllaceae).

    abstract:PREMISE OF THE STUDY:Reintroductions may be essential to prevent extinction of many critically endangered species. Ideally, reintroduction efforts rely on adjacent source populations, but limited source material may necessitate crossing individuals from different and possibly distant populations. To determine the conse...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Weisenberger LA,Weller SG,Sakai AK

    更新日期:2014-11-01 00:00:00

  • Reconstructing the ancestral female gametophyte of angiosperms: Insights from Amborella and other ancient lineages of flowering plants.

    abstract::For more than a century, the common ancestor of flowering plants was thought to have had a seven-celled, eight-nucleate Polygonum-type female gametophyte. It is now evident that not one, but in fact three, patterns of female gametophyte development and mature structure characterize the common ancestors of the four mos...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Friedman WE,Ryerson KC

    更新日期:2009-01-01 00:00:00

  • The evolutionary-developmental origins of multicellularity.

    abstract::Multicellularity has evolved at least once in every major eukaryotic clade (in all ploidy levels) and numerous times among the prokaryotes. According to a standard multilevel selection (MLS) model, in each case, the evolution of multicellularity required the acquisition of cell-cell adhesion, communication, cooperatio...

    journal_title:American journal of botany

    pub_type: 杂志文章,评审


    authors: Niklas KJ

    更新日期:2014-01-01 00:00:00

  • The role of diversification in community assembly of the oaks (Quercus L.) across the continental U.S.

    abstract:PREMISE OF THE STUDY:Evolutionary and biogeographic history, including past environmental change and diversification processes, are likely to have influenced the expansion, migration, and extinction of populations, creating evolutionary legacy effects that influence regional species pools and the composition of communi...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Cavender-Bares J,Kothari S,Meireles JE,Kaproth MA,Manos PS,Hipp AL

    更新日期:2018-03-01 00:00:00

  • Variation in the self-incompatibility response within and among populations of the tropical shrub Witheringia solanacea (Solanaceae).

    abstract::Breakdown of genetically enforced self-incompatibility (SI), an extremely common and important evolutionary transition in plants, has conventionally been conceived as a qualitative rather than a quantitative change. We evaluated qualitative and quantitative variation in SI for four populations of Witheringia solanacea...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Stone JL,Sasuclark MA,Blomberg CP

    更新日期:2006-04-01 00:00:00

  • Phylogenetic comparative analysis of microsporogenesis in angiosperms with a focus on monocots.

    abstract::This paper presents the first broad overview of three main features of microsporogenesis (male meiosis) in angiosperms: cytokinesis (cell division), intersporal wall formation, and tetrad form. A phylogenetic comparative approach was used to test for correlated evolution among these characters and to make hypotheses a...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Nadot S,Furness CA,Sannier J,Penet L,Triki-Teurtroy S,Albert B,Ressayre A

    更新日期:2008-11-01 00:00:00

  • Pinaceae-like reproductive morphology in Schizolepidopsis canicularis sp. nov. from the Early Cretaceous (Aptian-Albian) of Mongolia.

    abstract:PREMISE OF THE STUDY:Seed cone scales assigned to the genus Schizolepidopsis are widespread in Late Triassic to Cretaceous Eurasian deposits. They have been linked to the conifer family Pinaceae based on associated vegetative remains, but their exact affinities are uncertain. Recently discovered material from the Early...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Leslie AB,Glasspool I,Herendeen PS,Ichinnorov N,Knopf P,Takahashi M,Crane PR

    更新日期:2013-12-01 00:00:00

  • Tempo and mode of flower color evolution.

    abstract:UNLABELLED:• PREMISE OF THE STUDY:Flower color is one of the best-studied floral traits in terms of its genetic basis and ecological significance, yet few studies have examined the processes that shape its evolution across deep timescales. Advances in comparative methods along with larger phylogenies for floral radiat...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Smith SD,Goldberg EE

    更新日期:2015-07-01 00:00:00

  • A complete generic phylogeny of Malpighiaceae inferred from nucleotide sequence data and morphology.

    abstract:UNLABELLED: PREMISE OF THE STUDY:The Malpighiaceae include ∼1300 tropical flowering plant species in which generic definitions and intergeneric relationships have long been problematic. The goals of our study were to resolve relationships among the 11 generic segregates from the New World genus Mascagnia, test the mon...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Davis CC,Anderson WR

    更新日期:2010-12-01 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

  • 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

  • Recovery from bud disappearance explains prolonged dormancy in Cleistes bifaria (Orchidaceae).

    abstract:PREMISE OF THE STUDY:Virtually nothing is known about what actually happens during prolonged dormancy, the period during which significant proportions of geophyte populations do not sprout after seasonal dormancy but remain alive underground, to emerge again 1 or more years later. This study investigated the fate of pe...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Gregg KB

    更新日期:2011-02-01 00:00:00

  • Genetic diversity of Typha latifolia (Typhaceae) and the impact of pollutants examined with tandem-repetitive DNA probes.

    abstract::Genetic diversity at variable-number-tandem-repeat (VNTR) loci was examined in the common cattail, Typha latifolia (Typhaceae), using three synthetic DNA probes composed of tandemly repeated "core" sequences (GACA, GATA, and GCAC). The principal objectives of this investigation were to determine whether: (1) the previ...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Keane B,Pelikan S,Toth GP,Smith MK,Rogstad SH

    更新日期:1999-09-01 00:00:00

  • A cellular study of teosinte Zea mays subsp. parviglumis (Poaceae) caryopsis development showing several processes conserved in maize.

    abstract::The evolutionary history of maize (Zea mays subsp. mays) is of general interest because of its economic and scientific importance. Here we show that many cellular traits described previously in developing caryopses of maize are also seen in its wild progenitor teosinte (Zea mays subsp. parviglumis). These features, ea...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Dermastia M,Kladnik A,Dolenc Koce J,Chourey PS

    更新日期:2009-10-01 00:00:00

  • Phylogenetic perspectives on diversification, biogeography, and floral evolution of Collinsia and Tonella (Plantaginaceae).

    abstract:PREMISE OF THE STUDY:Collinsia was the subject of classic biosystematic studies by Garber and colleagues and is increasingly investigated to address major evolutionary questions. Lack of phylogenetic data from more than one gene region and one taxonomic exemplar has left relationships, diversity, and phytogeography of ...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Baldwin BG,Kalisz S,Armbruster WS

    更新日期:2011-04-01 00:00:00

  • Patterns of multiple paternity in fruits of Mimulus ringens (Phrymaceae).

    abstract::Multiply sired fruits provide unambiguous evidence that pollen from two or more donors was deposited on a stigma and successfully fertilized ovules. Such multiple paternity within fruits can have important consequences for both parental and offspring fitness, but little is known about the frequency of multiple paterni...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Mitchell RJ,Karron JD,Holmquist KG,Bell JM

    更新日期:2005-05-01 00:00:00

  • Sporophytic inbreeding depression in mosses occurs in a species with separate sexes but not in a species with combined sexes.

    abstract::Inbreeding depression is a critical factor countering the evolution of inbreeding and thus potentially shaping the evolution of plant sexual systems. Current theory predicts that inbreeding depression could have important evolutionary consequences, even in haploid-dominant organisms. To date, no data have been reporte...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Taylor PJ,Eppley SM,Jesson LK

    更新日期:2007-11-01 00:00:00

  • Floral development and morphology of Vochysiaceae. II. The position of the single fertile stamen.

    abstract::A conspicuous feature of Vochysiaceae flowers is their single fertile stamen. In some genera, the stamen is in front of a petal, whereas in others it is in front of a sepal. This difference has been attributed to two independent reductions, which implies the stamen is not homologous across the family. The observation ...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Litt A,Stevenson DW

    更新日期:2003-11-01 00:00:00

  • Influence of plant ontogeny on compensation to leaf damage.

    abstract::Ontogenetic changes in architecture, carbohydrate reserves, and resource allocation can constrain the ability of plants to compensate for herbivore damage. To evaluate ontogenetic changes in compensation, saplings and reproductive individuals of the tropical tree Casearia nitida were subjected to three levels of defol...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Boege K

    更新日期:2005-10-01 00:00:00

  • A phylogenetic analysis of the Orchidaceae: evidence from rbcL nucleotide.

    abstract::Cladistic parsimony analyses of rbcL nucleotide sequence data from 171 taxa representing nearly all tribes and subtribes of Orchidaceae are presented here. These analyses divide the family into five primary monophyletic clades: apostasioid, cypripedioid, vanilloid, orchidoid, and epidendroid orchids, arranged in that ...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Cameron KM,Chase MW,Whitten WM,Kores PJ,Jarrell DC,Albert VA,Yukawa T,Hills HG,Goldman DH

    更新日期:1999-02-01 00:00:00


    abstract::Nuclear and chloroplast DNA variation was assayed for two populations of Louisiana irises (Bayou Teche and Young's Coulee) that demonstrated extreme morphological variation and for a sample of the putative hybrid species, Iris nelsonii. The genetic markers examined in this analysis were diagnostic for either Iris fulv...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Arnold ML

    更新日期:1993-05-01 00:00:00

  • Sex ratios, size distributions, and sexual dimorphism in the dioecious tree Ilex aquifolium (Aquifoliaceae).

    abstract::Sex ratio and sexual dimorphism in physiology and growth were studied in the dioecious tree Ilex aquifolium at two localities in northern Spain. Genet sex ratio was significantly male biased in one locality but not in the other. However, ramet and flowering ramet sex ratios were male biased at both study sites. Males ...

    journal_title:American journal of botany

    pub_type: 杂志文章


    authors: Obeso JR,Alvarez-Santullano M,Retuerto R

    更新日期:1998-11-01 00:00:00