ROLE OF MYCORRHIZAL FUNGUS ORIGIN IN GROWTH AND NUTRIENT UPTAKE BY GERANIUM ROBERTIANUM.

abstract：PREMISE:Adaptation to harsh edaphic substrates has repeatedly led to the evolution of edaphic specialists and generalists. Yet, it is unclear what factors promote specialization versus generalization. Here, we search for habitat use patterns associated with serpentine endemics (specialists) and serpentine tolerators (g...

journal_title：American journal of botany

authors： Sianta SA,Kay KM

更新日期：2019-05-01 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：:Phylogenetic relationships of 38 species of the Alibertia group (Rubiaceae) and two outgroup species were investigated using the nuclear ribosomal 5S nontranscribed spacer (5S-NTS) and the internal transcribed spacers (ITS). Analysis of the data sets separately and in combination resulted in several well-supported and...

journal_title：American journal of botany

authors： Persson C

更新日期：2000-07-01 00:00:00

abstract：PREMISE OF THE STUDY:Several members of Selaginella are renowned for their ability to survive extreme drought and "resurrect" when conditions improve. Many of these belong to subgenus Tetragonostachys, a group of ∼45 species primarily found in North and Central America, with substantial diversity in the Sonoran and Chi...

journal_title：American journal of botany

authors： Arrigo N,Therrien J,Anderson CL,Windham MD,Haufler CH,Barker MS

更新日期：2013-08-01 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：:Chloroplast DNA (cpDNA) is maternally inherited in the majority, but not all, of angiosperm species. The mode of inheritance of cpDNA is a critical determinant of its molecular evolution and of its population genetic structure. Here, we present the results of investigations of the inheritance of cpDNA in Silene vulgar...

journal_title：American journal of botany

authors： McCauley DE,Sundby AK,Bailey MF,Welch ME

更新日期：2007-08-01 00:00:00

abstract：:The degree to which plants self-fertilize may impact their potential for genetic adaptation. Given that the mating system influences genetic processes within and among populations, the mating system could limit or promote local adaptation. I conducted a literature survey of published reciprocal transplant experiments ...

journal_title：American journal of botany

authors： Hereford J

更新日期：2010-02-01 00:00:00

abstract：:This study shows that structural data, when carefully examined, can provide valuable characters for delimiting monophyletic groups and can complement DNA with observable features to recognize and circumscribe taxa. In the angiosperm order Apiales, traditional classification has relied heavily (often exclusively) on fr...

journal_title：American journal of botany

authors： Liu MR,Plunkett GM,Lowry PP 2nd,Wyk BE,Tilney PM

更新日期：2006-09-01 00:00:00

abstract：PREMISE OF THE STUDY:The ecological and evolutionary significance of natural epigenetic variation (i.e., not based on DNA sequence variants) variation will depend critically on whether epigenetic states are transmitted from parents to offspring, but little is known on epigenetic inheritance in nonmodel plants. METHODS...

journal_title：American journal of botany

authors： Herrera CM,Alonso C,Medrano M,Pérez R,Bazaga P

更新日期：2018-04-01 00:00:00

abstract：PREMISE OF THE STUDY:Although our awareness of ploidy diversity has expanded with the application of flow cytometry, we still know little about the extent to which cytotypes within mixed-ploidy populations are genetically differentiated across environmental gradients. METHODS:To address this issue, we reared 14 popula...

journal_title：American journal of botany

authors： Etterson JR,Toczydlowski RH,Winkler KJ,Kirschbaum JA,McAulay TS

更新日期：2016-01-01 00:00:00

abstract：:During the crown-building phase, the mechanical architecture of the trunk of Aralia spinosa exhibits considerable ontogenetic variation. All trunks were tapered along their length, and taper was dependent on both ramet size and age; older, larger trunks were more tapered than younger, smaller trunks. Trunk specific gr...

journal_title：American journal of botany

authors： Briand CH,Campion SM,Dzambo DA,Wilson KA

更新日期：1999-12-01 00:00:00

abstract：:Seedling establishment has long been believed to be rare on alpine tundra because of predicted life history trade-offs, the clonality of alpine species, and the harshness of the alpine climate. Contrary to the idea that seedlings are rare on alpine tundra, a 4-yr demographic study of seedlings at Niwot Ridge, Colorado...

journal_title：American journal of botany

authors： Forbis TA

更新日期：2003-08-01 00:00:00

abstract：:Correlations were examined between habitat characters and clonal structures determined by the RAPD (random amplified polymorphic DNA) assay in five populations of Oryza rufipogon in China. Nine of 175 decameric primers were used in the study because they reproducibly amplified polymorphisms. The extent of clonality to...

journal_title：American journal of botany

authors： Xie ZW,Lu YQ,Ge S,Hong DY,Li FZ

更新日期：2001-06-01 00:00:00

abstract：PREMISE OF THE STUDY:New microsatellite primers were developed for testing genetic differentiation within Nothoceros aenigmaticus and their potential use in other Nothoceros species. The microsatellites are designed to investigate partitioning of genetic variation in a taxon with a peculiar sex allopatry in the souther...

journal_title：American journal of botany

authors： Villarreal JC,Forrest LL,McFarland K,Goffinet B

更新日期：2012-03-01 00:00:00

abstract：UNLABELLED:• PREMISE OF THE STUDY:Mountainous regions support high plant productivity, diversity, and endemism, yet are highly vulnerable to climate change. Historical records and model predictions show increasing temperatures across high elevation regions including the Southern Rocky Mountains, which can have a stron...

journal_title：American journal of botany

authors： Munson SM,Sher AA

更新日期：2015-08-01 00:00:00

abstract：:• Premise of the study: Tropical forests are the most species-rich terrestrial communities on Earth, and understory trees and shrubs comprise a large fraction of their plant species diversity, especially at high rainfalls. The mechanisms responsible for generating such high levels of diversity remain unknown. One hypo...

journal_title：American journal of botany

authors： Theim TJ,Shirk RY,Givnish TJ

更新日期：2014-07-01 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：PREMISE OF THE STUDY:Nutrient resorption is essential for plant nutrient conservation. Large-bodied plants potentially have large nutrient sink pools and high nutrient flux. Whether and how nutrient resorption can be regulated by plant size and biomass allocation are yet unknown. METHODS:Using the herbaceous plant Ama...

journal_title：American journal of botany

authors： Peng H,Yan Z,Chen Y,Zhao X,Han W

更新日期：2019-03-01 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

authors： Mochizuki K,Furukawa S,Kawakita A

更新日期：2017-06-01 00:00:00

abstract：PREMISE OF THE STUDY:Our goal was to infer the phylogenetic relationships and historical biogeography of the genus Dryopteris with a focus on taxa in sub-Saharan Africa and neighboring islands. In general, little is known about the relationships between African fern species and their congeners in other geographic regio...

journal_title：American journal of botany

authors： Sessa EB,Juslén A,Väre H,Chambers SM

更新日期：2017-03-01 00:00:00

abstract：UNLABELLED: PREMISE OF THE STUDY:Microsatellite primers were developed in the introduced shrub Rhamnus cathartica L., to investigate potential hybridization events with related taxa as a stimulus of invasive spread. • METHODS AND RESULTS:Using a non-radioactive protocol, 15 primer sets were identified in North Americ...

journal_title：American journal of botany

authors： Culley TM,Stewart JR

更新日期：2010-03-01 00:00:00

abstract：:We transplanted Nuphar variegata with submersed leaves only into natural lake sediments in pH-, [CO(2)]-, depth-, and temperature-controlled greenhouse tanks to test the hypotheses that more fertile sediment, lower free [CO(2)], and shallower depth would all stimulate the development of floating leaves. Sediment highe...

journal_title：American journal of botany

authors： Titus JE,Gary Sullivan P

更新日期：2001-08-01 00:00:00

abstract：:Cladistic analyses of plastid DNA sequences rbcL and trnL-F are presented separately and combined for 48 genera of Amaryllidaceae and 29 genera of related asparagalean families. The combined analysis is the most highly resolved of the three and provides good support for the monophyly of Amaryllidaceae and indicates Ag...

journal_title：American journal of botany

authors： Meerow AW,Fay MF,Guy CL,Li QB,Zaman FQ,Chase MW

更新日期：1999-09-01 00:00:00

abstract：PREMISE OF THE STUDY:Conifers are an important living seed plant lineage with an extensive fossil record spanning more than 300 million years. The group therefore provides an excellent opportunity to explore congruence and conflict between dated molecular phylogenies and the fossil record. METHODS:We surveyed the curr...

journal_title：American journal of botany

authors： Leslie AB,Beaulieu J,Holman G,Campbell CS,Mei W,Raubeson LR,Mathews S

更新日期：2018-09-01 00:00:00

abstract：PREMISE OF THE STUDY:Microsatellite markers were developed for Petunia integrifolia subsp. depauperata with an intent to clarify taxonomic questions on the P. integrifolia complex, and to identify a purple-flowered parent of P. hybrida. METHODS AND RESULTS:We characterized 11 microsatellite loci by screening primers d...

journal_title：American journal of botany

authors： Kriedt RA,Ramos-Fregonezi AM,Beheregaray LB,Bonatto SL,Freitas LB

更新日期：2011-10-01 00:00:00

abstract：PREMISE OF THE STUDY:Gravity has been a major force throughout the evolution of terrestrial organisms, and plants have developed exquisitely sensitive, regulated tropisms and growth patterns that are based on the gravity vector. The nullified gravity during spaceflight allows direct assessment of gravity roles. The mic...

journal_title：American journal of botany

authors： Zupanska AK,Denison FC,Ferl RJ,Paul AL

更新日期：2013-01-01 00:00:00

abstract：:Inferring basal relationships among vascular plants poses a major challenge to plant systematists. The divergence events that describe these relationships occurred long ago and considerable homoplasy has since accrued for both molecular and morphological characters. A potential solution is to examine phylogenetic anal...

journal_title：American journal of botany

authors： Wolf P

更新日期：1997-10-01 00:00:00

abstract：PREMISE OF THE STUDY:The presence or absence of a functional copy of a plastid gene may reflect relaxed selection, and may be phylogenetically significant, reflecting shared ancestry. In some liverworts, the plastid gene cysA is a pseudogene (inferred to be nonfunctional). We surveyed 63 liverworts from all major clade...

journal_title：American journal of botany

authors： Wickett NJ,Forrest LL,Budke JM,Shaw B,Goffinet B

更新日期：2011-08-01 00:00:00

abstract：PREMISE OF THE STUDY:Chloroplast microsatellites were developed in Theobroma cacao to examine the genetic diversity of cacao cultivars in Trinidad and Tobago. METHODS AND RESULTS:Nine polymorphic microsatellites were designed from the chloroplast genomes of two T. cacao accessions. These microsatellites were tested in...

journal_title：American journal of botany

authors： Yang JY,Motilal LA,Dempewolf H,Maharaj K,Cronk QC

更新日期：2011-12-01 00:00:00

abstract：:The amplified fragment length polymorphism (AFLP) method was used to evaluate genetic diversity and to assess genetic relationships within the section Mentha in order to clarify the taxonomy of several interspecific mint hybrids with molecular markers. To this end, genetic diversity of 62 Mentha accessions from differ...

journal_title：American journal of botany

authors： Gobert V,Moja S,Colson M,Taberlet P

更新日期：2002-12-01 00:00:00