Northern hemisphere biogeography of Cerastium (Caryophyllaceae): insights from phylogenetic analysis of noncoding plastidnucleotide sequences.

abstract：:Senna (Leguminosae) is a large, widespread genus that includes species with enantiostylous, asymmetric flowers and species with extrafloral nectaries. Clarification of phylogenetic relationships within Senna based on parsimony analyses of three chloroplast regions (rpS16, rpL16, and matK) provides new insights on the ...

journal_title：American journal of botany

authors： Marazzi B,Endress PK,Queiroz LP,Conti E

更新日期：2006-02-01 00:00:00

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

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

abstract：:We demonstrated that "orchid mycorrhiza," a specialized mycorrhizal type, appeared in the common ancestor of the largest plant family Orchidaceae and that the fungal partner shifted from Glomeromycota to a particular clade of Basidiomycota in association with this character evolution. Several unique mycorrhizal charac...

journal_title：American journal of botany

authors： Yukawa T,Ogura-Tsujita Y,Shefferson RP,Yokoyama J

更新日期：2009-11-01 00:00:00

abstract：PREMISE OF THE STUDY:Species differ in their temperature germination niche. Populations of a species may similarly differ across the distribution range of the species. Anticipating the impacts of climate variability and change requires understanding the differential sensitivity to germination temperature among and with...

journal_title：American journal of botany

authors： Chamorro D,Luna B,Moreno JM

更新日期：2017-01-01 00:00:00

abstract：:We analyzed the effects of temporal variation in floral display size (number of flowers open at one time on a plant) on the rate of pollen removed and receipt of individual flowers for the sequential blooming plant Narthecium asiaticum (Liliaceae). Because of the acropetal blooming of this species, the display sizes w...

journal_title：American journal of botany

authors： Ishii HS,Sakai S

更新日期：2002-03-01 00:00:00

abstract：PREMISE OF THE STUDY:Large genera provide remarkable opportunities to investigate patterns of morphological evolution and historical biogeography in plants. A molecular phylogeny of the species-rich and morphologically and ecologically diverse genus Mimosa was generated to evaluate its infrageneric classification, reco...

journal_title：American journal of botany

authors： Simon MF,Grether R,de Queiroz LP,Särkinen TE,Dutra VF,Hughes CE

更新日期：2011-07-01 00:00:00

abstract：:Lxm1-O, a dominant EMS (ethyl methanesulfonate) induced mutation in maize (Zea mays, Poaceae), was originally reported to affect the blade/sheath boundary over the midrib region of the leaf. Here we present a more extensive analysis of the Lxm phenotype in nine different inbred lines. Lxm leaves are longer and narrowe...

journal_title：American journal of botany

authors： Schichnes D,Freeling M

更新日期：1998-04-01 00:00:00

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

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

abstract：:To determine the effects of density, genotype, and their interaction on individual seed mass in Raphanus sativus L., we replicated maternal and paternal families of seed across two planting densities in an experimental garden. Seeds were produced by a nested breeding design performed in the greenhouse. Among garden-ra...

journal_title：American journal of botany

authors： Mazer SJ,Wolfe LM

更新日期：1992-10-01 00:00:00

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

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

更新日期：2018-08-01 00:00:00

abstract：:The taxonomic richness of seed plants at different taxonomic levels was compared between temperate East Asia and North America at both continental and semi-continental scales. In each comparison, land area and latitude range were adjusted to a comparable level between the two continental regions. East Asia is signific...

journal_title：American journal of botany

authors： Qian H

更新日期：2002-11-01 00:00:00

abstract：:The endodermis of different species of the genus Equisetum has different configurations, two or one continuous layers or a sheath only around the vascular bundles. The question whether the endodermis contributes to the mechanical stability of the aerial shoots is investigated in two ways: In a direct approach, the end...

journal_title：American journal of botany

authors： Spatz HC,Emanns A

更新日期：2004-11-01 00:00:00

abstract：PREMISE:The cosmopolitan and ecologically important grass subfamily Aristidoideae comprises the widely distributed genus Aristida (250-290 species), Stipagrostis (50 species, with an African-Asian distribution), and Sartidia (five species, Africa and Madagascar). The subfamily includes species with C(3) (Sartidia and a...

journal_title：American journal of botany

authors： Cerros-Tlatilpa R,Columbus JT,Barker NP

更新日期：2011-11-01 00:00:00

abstract：PREMISE OF THE STUDY:While the effect of abiotic factors on leaf herbivory is well known, the relative importance of abiotic conditions influencing both mutualists and antagonists is less well understood. Species interactions could enhance or reduce the direct effects of abiotic factors, depending on how mutualists and...

journal_title：American journal of botany

authors： Soper Gorden NL,Adler LS

更新日期：2013-04-01 00:00:00

abstract：:The biogeography of plant-animal interactions is a novel topic on which many disciplines converge (e.g., reproductive biology, biogeography, and evolutionary biology). Narrative reviews have indicated that tropical columnar cacti and agaves have highly specialized pollination systems, while extratropical species have ...

journal_title：American journal of botany

authors： Munguía-Rosas MA,Sosa VJ,Ojeda MM,De-Nova JA

更新日期：2009-10-01 00:00:00

abstract：:Viability of long-distance pollen links ecological models to the genetic structure of forest tree populations, determining how forests will adapt to climate change and how far genes flow from genetically modified (GM) pine plantations. Addressing this landscape-scale inquiry is feasible when the pollen source, the del...

journal_title：American journal of botany

authors： Williams CG

更新日期：2010-05-01 00:00:00

abstract：:There have been three periods of significant discovery in the exploration of fern and lycophyte genetics. First, during the 1930s, Andersson-Kottö conducted crossing studies on ferns. The publication of Manton's magnum opus on fern chromosomes in 1950 stimulated the second. The third emerged from Klekowski's 1973 Amer...

journal_title：American journal of botany

authors： Haufler CH

更新日期：2014-12-01 00:00:00

abstract：UNLABELLED: PREMISE OF THE STUDY:An anatomical examination of dry and fleshy fruits within the Solanaceae was carried out to identify comparable stages throughout development as well as features exclusive to each type of fruit. We studied fruit development of Nicotiana and Petunia, which have the plesiomorphic capsula...

journal_title：American journal of botany

authors： Pabón-Mora N,Litt A

更新日期：2011-09-01 00:00:00

abstract：:Epiphytes are ecologically important components of tropical forests worldwide and yet they have been underrepresented in studies of reproductive biology. Given the presumed ephemeral nature of their substrates, and the importance of dispersal and colonization, epiphytes might be expected to undergo substantial inbreed...

journal_title：American journal of botany

authors： Hooper E,Haufler C

更新日期：1997-12-01 00:00:00

abstract：:Taxonomical classification of higher fungi remains an important challenge and can benefit from the application of molecular analysis. We propose that the ectomycorrhizal (EM) fungal taxa might include a number of cryptic species because there are few morphological characteristics useful for distinguishing among these ...

journal_title：American journal of botany

authors： Sato H,Yumoto T,Murakami N

更新日期：2007-10-01 00:00:00

abstract：:The fresh weights of suspension cultures of pear (Pyrus communis) and quince (Cydonia oblonga) increased exponentially for 30 to 40 days after subculturing. Transferring pear cultures to media in which quince cultures had grown for 10 days resulted in a 70% inhibition of callus growth. Transferring quince cultures to ...

journal_title：American journal of botany

authors： Moore R

更新日期：1986-01-01 00:00:00

abstract：:Recent discoveries of fossil reproductive structures from deposits of the Raritan Formation in New Jersey (Turonian, Upper Cretaceous, ~90 million years BP) include a previously undescribed representative of the Order Capparales. The fossils are usually charcoalified with three-dimensional structure and excellent anat...

journal_title：American journal of botany

authors： Gandolfo M,Nixon K,Crepet W

更新日期：1998-07-01 00:00:00

abstract：PREMISE OF THE STUDY:Microsatellite markers were developed for the common wetland plant Juncus effusus to assess levels of within- and among-population genetic diversity. METHODS AND RESULTS:Using a next-generation sequencing approach we identified new microsatellite loci, from which 23 were further characterized in a...

journal_title：American journal of botany

authors： Michalski SG,Durka W

更新日期：2012-02-01 00:00:00

abstract：PREMISE OF THE STUDY:The apical meristem generates indeterminate apical growth of the stem and root of vascular plants. Our previous examination showed that shoot apical meristems (SAMs) can be classified into two types based on plasmodesmatal networks (PNs), which are important elements in symplasmic signaling pathway...

journal_title：American journal of botany

authors： Imaichi R,Moritoki N,Solvang HK

更新日期：2018-09-01 00:00:00

abstract：:The last decade has witnessed a resurgence in the study of the evolution of plant development, combining investigations in systematics, developmental morphology, molecular developmental genetics, and molecular evolution. The integration of phylogenetic studies, structural analyses of fossil and extant taxa, and molecu...

journal_title：American journal of botany

authors： Friedman WE,Moore RC,Purugganan MD

更新日期：2004-10-01 00:00:00

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

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

更新日期：2018-03-01 00:00:00

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

authors： McHenry MA,Barrington DS

更新日期：2014-02-01 00:00:00

abstract：PREMISE OF THE STUDY:Intertidal macroalgae must resist extreme hydrodynamic forces imposed by crashing waves. How does frond flexibility mitigate drag, and how does flexibility affect predictions of drag and dislodgement in the field? METHODS:We characterized flexible reconfiguration of six seaweed species in a recirc...

journal_title：American journal of botany

authors： Martone PT,Kost L,Boller M

更新日期：2012-05-01 00:00:00

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

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

更新日期：2005-05-01 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

authors： Zanne AE,Chapman CA,Kitajima K

更新日期：2005-06-01 00:00:00