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 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.
journal_name
Am J Botjournal_title
American journal of botanyauthors
Tozer WC,Rice B,Westoby Mdoi
10.3732/ajb.1400379subject
Has Abstractpub_date
2015-03-01 00:00:00pages
367-78issue
3eissn
0002-9122issn
1537-2197pii
ajb.1400379journal_volume
102pub_type
杂志文章abstract：:Trichomanes intricatum, the sporophyte-less filmy fern of the eastern United States, has been considered to be a species whose sporophyte generation has become extinct or is possibly still present among the many species of Trichomanes s.l. in the new world tropics but unable to grow in a temperate climate. A close rel...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.3732/ajb.0800122
更新日期：2008-12-01 00:00:00
abstract：:Perennial crops represent important fresh and processed food sources worldwide, but advancements in breeding perennials are often impeded due to their very nature. The perennial crops we rely on most for food take several years to reach production maturity and require large spaces to grow, which make breeding new cult...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.3732/ajb.1400143
更新日期：2014-10-01 00:00:00
abstract：PREMISE OF THE STUDY:During the interactions between a parasitic plant and its host, the parasite affects its host morphologically, anatomically, and physiologically, yet there has been little focus on the effect of hosts on the parasite. Here, the functional interactions between the hemiparasitic mistletoe Psittacanth...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.3732/ajb.1600166
更新日期：2016-06-01 00:00:00
abstract：UNLABELLED:• PREMISE OF THE STUDY:Accurate assessments of biodiversity are paramount for understanding ecosystem processes and adaptation to change. Invasive species often contribute substantially to local biodiversity; correctly identifying and distinguishing invaders is thus necessary to assess their potential impac...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.3732/ajb.1400466
更新日期：2015-07-01 00:00:00
abstract：PREMISE:Polyploidy may serve to contribute to range size if autopolyploid cytotypes are adapted to differing ecological conditions. This study aims to establish the geographic distribution of cytotypes within the giant goldenrod (Solidago gigantea), and to assess whether cytotypes exhibit differing ecological tolerance...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.1002/ajb2.1556
更新日期：2020-11-01 00:00:00
abstract：UNLABELLED: PREMISE OF THE STUDY:Polyploid speciation has been important in plant evolution. However, the conditions that favor the origination and persistence of polyploids are still not well understood. Here, we examine origins of 16 polyploid species in Mentzelia section Trachyphytum. • METHODS:We used phylogeny r...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.3732/ajb.0900388
更新日期：2010-09-01 00:00:00
abstract：PREMISE OF THE STUDY:Robust markers are required (inter alia) for assessing origins of Calophyllum inophyllum populations on the Bonin Islands, Japan. Therefore, informative expressed sequence tag (EST)-based microsatellite or simple sequence repeat (SSRs) markers in the species were sought. METHODS AND RESULTS:Using ...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.3732/ajb.1100299
更新日期：2012-01-01 00:00:00
abstract：:Seed size and cotyledon morphology are two key juvenile traits that have evolved in response to changes in plant species life-history strategies and habitat associations. Correlations of these traits with each other and with other juvenile traits were examined for 70 species of trees and shrubs in Kibale National Park...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.3732/ajb.92.6.972
更新日期：2005-06-01 00:00:00
abstract：UNLABELLED: PREMISE OF THE STUDY:Specific leaf area (SLA) is a critical component of the leaf economics spectrum, and many functional leaf traits have been empirically demonstrated to covary with SLA. However, a complete understanding of how change in leaf size influences SLA has not yet emerged. • METHODS:To help de...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.3732/ajb.1000118
更新日期：2010-11-01 00:00:00
abstract：PREMISE OF THE STUDY:Climate change models for California predict a warmer, drier future, potentially resulting in shorter growing seasons. If phenotypic differences between closely related species currently distributed across a moisture and temperature gradient represent adaptations to their abiotic environment, then ...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.3732/ajb.1500108
更新日期：2016-01-01 00:00:00
abstract：PREMISE OF THE STUDY:Microsatellites were developed for the native, perennial herbs Houstonia longifolia and H. purpurea to establish rates and patterns of hybridization among these and other closely related lineages within the genus. METHODS AND RESULTS:Seven primer sets were developed and tested using populations ac...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.3732/ajb.1000294
更新日期：2011-02-01 00:00:00
abstract：PREMISE OF THE STUDY:Seabirds often cause significant changes to soil properties, and seabird-dominated systems often host unique plant communities. This study experimentally (1) examined species-specific responses to seabird guano gradients, (2) considered the role that differential functional traits among species pla...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.3732/ajb.1000159
更新日期：2011-02-01 00:00:00
abstract：PREMISE OF THE STUDY:Permineralization provides the most faithful known mode of three-dimensional preservation of the morphology and cellular anatomy of fossil plants. Standard optical microscopic documentation of such structures can provide only an approximation of their true three-dimensional form and is incapable of...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.3732/ajb.1300027
更新日期：2013-08-01 00:00:00
abstract：UNLABELLED: PREMISE OF THE STUDY:Corallodiscus is widespread across China and in adjacent countries to the west and south, with C. lanuginosus covering the entire range of the genus. Microsatellite markers will be useful to address within-complex taxonomic and biogeographic structures of this species. • METHODS AND R...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.3732/ajb.1200178
更新日期：2012-12-01 00:00:00
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
doi：10.3732/ajb.1100083
更新日期：2011-09-01 00:00:00
abstract：:A well-integrated plant shows extensive carbohydrate translocation through the plant body. Even in highly integrated plants, however, translocation patterns will be sectorial if vascular tissue restricts carbon movement to sectors along stems. Both integration and sectorial translocation patterns are sensitive to plan...
journal_title：American journal of botany
pub_type： 杂志文章
doi：
更新日期：1998-12-01 00:00:00
abstract：PREMISE OF THE STUDY:Anatomical and morphological features of Satanocrater were studied to test hypotheses of xeric adaptations in the genus, which is endemic to arid tropical Africa. These features, together with molecular data, were used to test the phylogenetic placement of Satanocrater within the large plant family...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.3732/ajb.1100354
更新日期：2012-06-01 00:00:00
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
doi：10.3732/ajb.1000262
更新日期：2011-02-01 00:00:00
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
doi：10.3732/ajb.1500163
更新日期：2015-07-01 00:00:00
abstract：:Phylogenetic analysis of DNA sequences of the chloroplast genes rcbL and ndhf revealed a highly supported clade composed of the families Plantaginaceae, Callitrichaceae, and Hippuridaceae in close association with the model organism Antirrhinum majus and other members of family Scrophulariaceae. Plantago has miniature...
journal_title：American journal of botany
pub_type： 杂志文章
doi：
更新日期：1998-08-01 00:00:00
abstract：PREMISE OF THE STUDY:Tea Unigene-derived MicroSatellite (TUGMS) markers were identified from the publicly available EST data in Camellia sinensis for characterization and future genome mapping studies in tea. METHODS AND RESULTS:One hundred twelve novel TUGMS markers were identified from 4356 unigenes derived by clust...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.3732/ajb.1000525
更新日期：2011-06-01 00:00:00
abstract：PREMISE OF THE STUDY:The genus Hoya (Apocynaceae; Asclepiadoideae) is characterized by a set of complex floral characters unique among the asclepiads, but their role in pollination is poorly understood. Here, we report a new mechanism of asclepiad pollination in the wax plant Hoya carnosa: the pollinaria are transferre...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.3732/ajb.1700078
更新日期：2017-06-01 00:00:00
abstract：PREMISE OF THE STUDY:Populations of heterostylous species are characterized by two or three floral morphs with reciprocal positioning of stigmas and anthers. Theoretical models predict equal morph frequencies (isoplethy) when disassortative mating is prevalent in populations, but biased morph ratios may occur when vari...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.3732/ajb.1600345
更新日期：2017-01-01 00:00:00
abstract：PREMISE OF THE STUDY:Phenological mismatch has received attention in plant-pollinator interactions, but less so in seed dispersal mutualisms. We investigated whether the seasonal availability of myrmecochorous seeds is well matched to the seasonal activity patterns of seed-dispersing ants. METHODS:We compared seasonal...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.1002/ajb2.1214
更新日期：2019-01-01 00:00:00
abstract：PREMISE OF THE STUDY:The life histories of lichen fungi are not well known and cannot be readily studied in laboratory culture. This work documents in situ the complete life cycle of the widespread crustose lichen Calopadia puiggarii, which reproduces sexually and asexually on the surfaces of leaves. METHODS:Plastic c...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.3732/ajb.1400272
更新日期：2014-11-01 00:00:00
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
doi：10.3732/ajb.92.2.337
更新日期：2005-02-01 00:00:00
abstract：:Seed size and germination requirements of eight (of nine) Sarracenia species, and 13 populations of S. purpurea were studied. All species except for S. purpurea are restricted to the southeastern United States, whereas S. purpurea ranges across Canada, southward along the eastern United States into Maryland and Virgin...
journal_title：American journal of botany
pub_type： 杂志文章
doi：
更新日期：2001-03-01 00:00:00
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
doi：10.3732/ajb.94.11.1853
更新日期：2007-11-01 00:00:00
abstract：PREMISE OF THE STUDY:Ferns and lycophytes are the only extant land plants with two free-living generations (sporophytes and gametophytes); hence, a single species may have two different distributions. The distribution of the gametophytes of most fern species, which are much smaller in size than sporophytes, are almost ...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.3732/ajb.1200555
更新日期：2013-04-01 00:00:00
abstract：PREMISE:Light is critical in the ability of plants to accumulate chlorophyll. When exposed to far-red (FR) light and then grown in white light in the absence of sucrose, wild-type seedlings fail to green in a response known as the FR block of greening (BOG). This response is controlled by phytochrome A through repressi...
journal_title：American journal of botany
pub_type： 杂志文章
doi：10.1002/ajb2.1423
更新日期：2020-02-01 00:00:00
