Stomatal density responses of temperate woodland plants over the past seven decades of CO2 increase: a comparison of Salisbury (1927) with contemporary data.

abstract：PREMISE OF THE STUDY:Plant-herbivore networks are highly specialized in their interactions, yet they are highly variable with regard to the relative importance of specific host species for herbivores. How host species traits determine specialization and species strength in this antagonistic network is still an unanswer...

journal_title：American journal of botany

authors： López-Carretero A,Boege K,Díaz-Castelazo C,Domínguez Z,Rico-Gray V

更新日期：2016-08-01 00:00:00

abstract：:We tested the hypothesis that trees growing at high elevations with occasional freezing temperatures have smaller diameter xylem vessels than trees of the same species growing at lower and warmer elevations. The young branch wood of the wide-ranging Hawaiian tree species Metrosideros polymorpha (Myrtaceae) was examine...

journal_title：American journal of botany

authors： Fisher JB,Goldstein G,Jones TJ,Cordell S

更新日期：2007-05-01 00:00:00

abstract：PREMISE OF THE STUDY:Phylogenetic incongruence between "gene trees" and "species trees" has been widely acknowledged in phylogenetic research. Conflicts may emerge from several processes including paralogy, hybridization, and incomplete lineage sorting. Although phylogenetic incongruence appears common, its impact on m...

journal_title：American journal of botany

authors： Zhang Q,Feild TS,Antonelli A

更新日期：2015-04-01 00:00:00

abstract：:Biparental inbreeding is thought to be a common feature of plant populations with restricted pollen dispersal. It is generally assumed that the inbreeding depression frequently observed to accompany self-fertilization can be extrapolated to the lesser degrees of consanguinity involved in biparental inbreeding, but thi...

journal_title：American journal of botany

authors： Heywood JS

更新日期：1993-05-01 00:00:00

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

authors： Wang L,Showalter A,Ungar I

更新日期：1997-09-01 00:00:00

abstract：:This paper reports the frequency of spontaneous amphiploids or neopolyploids in experimental interspecific hybrids in two annual sections of Gilia (Polemoniaceae, sects. Arachnion and Gilia, x = 9). In each section the species were intercrossed in numerous hybrid combinations to obtain an array of F1 hybrid types; sev...

journal_title：American journal of botany

authors： Grant V

更新日期：2002-08-01 00:00:00

abstract：:The micromorphology of pits in tracheary elements was examined in 35 species representing 29 genera of Rosaceae and related families to evaluate the assumption that angiosperm pits are largely invariant. In most Rosaceae, pit membranes between fibers and tracheids frequently appear to have amorphous thickenings with a...

journal_title：American journal of botany

authors： Jansen S,Sano Y,Choat B,Rabaey D,Lens F,Dute RR

更新日期：2007-04-01 00:00:00

abstract：:Many plant species contain populations with more than one polyploid cytotype, but little is known of the mechanisms maintaining several cytotypes in a population. Andropogon gerardii cytotypes were compared to evaluate different models of autopolyploid cytotype coexistence. The enneaploid (90 chromosome, 9x) cytotype ...

journal_title：American journal of botany

authors： Keeler KH,Davis GA

更新日期：1999-07-01 00:00:00

abstract：PREMISE OF THE STUDY:Drosera peltata var. nipponica, an element of the East Asia warm-temperate vegetation, and D. rotundifolia, a widely distributed boreal species, reach one of their northernmost and southernmost limits, respectively, on the Korean Peninsula. Because the Last Glacial Maximum (LGM)-Holocene dynamics o...

journal_title：American journal of botany

authors： Chung MY,López-Pujol J,Chung MG

更新日期：2013-11-01 00:00:00

abstract：UNLABELLED:• PREMISE OF THE STUDY:Two ovulate conifer cones, one of which is attached terminally to a short leafy shoot, reveal the presence of a new species of Hughmillerites in the Early Cretaceous Apple Bay flora of Vancouver Island, British Columbia, Canada. This ancient conifer expands the diversity of Cupressace...

journal_title：American journal of botany

authors： Atkinson BA,Rothwell GW,Stockey RA

更新日期：2014-12-01 00:00:00

abstract：PREMISE:Inbreeding depression is traditionally considered a major factor favoring outcrossing in hermaphrodites. Recent experiments have shown that environmental conditions can influence the magnitude of inbreeding depression, but their relevance in natural populations is unclear. To investigate this, we studied the cl...

journal_title：American journal of botany

authors： Stojanova B,Maurice S,Cheptou PO

更新日期：2020-01-01 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：PREMISE OF THE STUDY:Geographic patterns of biodiversity have long inspired interest in processes that shape the assembly, diversity, and dynamics of communities at different spatial scales. To study mechanisms of community assembly, ecologists often compare spatial variation in community composition (beta-diversity) a...

journal_title：American journal of botany

authors： Burkle LA,Myers JA,Belote RT

更新日期：2016-01-01 00:00:00

abstract：:Phloem, as a major tissue mediating long-distance communication, has been an object of extensive research ever since its structure was first reported in 1837. Functional phloem consists of sieve elements (SEs) and companion cells (CCs). While SEs are enucleated conducting cells in the phloem, CCs are cells with intact...

journal_title：American journal of botany

authors： Heo JO,Roszak P,Furuta KM,Helariutta Y

更新日期：2014-09-01 00:00:00

abstract：UNLABELLED:• PREMISE OF THE STUDY:Island plants are over-exploited and "under-explored." Understanding the reproductive biology of plants, especially rare species, is fundamental to clarifying their evolution, estimating potential for change, and for creating effective conservation plans. Clarification of sexual syste...

journal_title：American journal of botany

authors： Anderson GJ,Anderson MK,Patel N

更新日期：2015-03-01 00:00:00

abstract：:Nuphar comprises 13 species of aquatic perennials distributed in the temperate Northern Hemisphere. The European species N. lutea and N. pumila in Norway, the Netherlands, and Germany are pollinated by bees and flies, including apparent Nuphar specialists. This contrasts with reports of predominant beetle pollination ...

journal_title：American journal of botany

authors： Lippok B,Gardine AA,Williamson PS,Renner SS

更新日期：2000-06-01 00:00:00

abstract：PREMISE OF THE STUDY:Bignoniaceae is an important component of neotropical forests and a model for evolutionary and biogeographical studies. A previous combination of molecular markers and morphological traits improved the phylogeny of the group. Here we demonstrate the value of next-generation sequencing (NGS) to asse...

journal_title：American journal of botany

authors： Firetti F,Zuntini AR,Gaiarsa JW,Oliveira RS,Lohmann LG,Van Sluys MA

更新日期：2017-10-01 00:00:00

abstract：:Wind is a major ecological factor for plants and a major economical factor for forestry. Mechanical analyses have revealed that the multimodal dynamic behavior of trees is central to wind-tree interactions. Moreover, the trunk and branches influence dynamic modes, both in frequency and location. Because of the complex...

journal_title：American journal of botany

authors： Rodriguez M,Langre Ed,Moulia B

更新日期：2008-12-01 00:00:00

abstract：:Phylogenetic analyses of Meliaceae, including representatives of all four currently recognized subfamilies and all but two tribes (32 genera and 35 species, respectively), were carried out using DNA sequence data from three regions: plastid genes rbcL, matK (partial), and nuclear 26S rDNA (partial). Individual and com...

journal_title：American journal of botany

authors： Muellner AN,Samuel R,Johnson SA,Cheek M,Pennington TD,Chase MW

更新日期：2003-03-01 00:00:00

abstract：:The North American plums are a closely related group that are not easily circumscribed, have overlapping morphologies, and are known to hybridize. We previously showed that the North American plums are a closely related, monophyletic group of taxa with little to no cpDNA sequence divergence between taxa. In that study...

journal_title：American journal of botany

authors： Shaw J,Small RL

更新日期：2005-12-01 00:00:00

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

authors： Friedman WE,Ryerson KC

更新日期：2009-01-01 00:00:00

abstract：PREMISE OF THE STUDY:We developed simple sequence repeat (SSR) markers from expressed sequence tags (ESTs) for Callitris columellaris sensu lato (s.l.) to elucidate population genetic structure and detect outlier loci by genome scan. METHODS AND RESULTS:mRNA from an individual seedling was subjected to cDNA synthesis ...

journal_title：American journal of botany

authors： Sakaguchi S,Uchiyama K,Ueno S,Ujino-Ihara T,Tsumura Y,Prior LD,Bowman DM,Crisp MD,Isagi Y

更新日期：2011-12-01 00:00:00

abstract：PREMISE OF THE STUDY:Most pollen walls are interrupted by apertures, thin areas providing access to stigmatic fluids and exit points for pollen tubes. Unexpectedly, pollen tubes of Arabidopsis thaliana are not obligated to pass through apertures and can instead take the shortest route into the stigma, passing directly ...

journal_title：American journal of botany

authors： Edlund AF,Zheng Q,Lowe N,Kuseryk S,Ainsworth KL,Lyles RH,Sibener SJ,Preuss D

更新日期：2016-06-01 00:00:00

abstract：:Based on positive results for 11 of 17 species included in an anatomical survey of tree roots, we concluded that the origin of adventitious branch roots (ABR) on established, undisturbed woody parental root axes is a widespread occurrence. ABR were morphologically indistinguishable from branch roots formed in primary ...

journal_title：American journal of botany

authors： Paolillo DJ Jr,Bassuk NL

更新日期：2005-05-01 00:00:00

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

authors： Tozer WC,Rice B,Westoby M

更新日期：2015-03-01 00:00:00

abstract：PREMISE OF THE STUDY:Productivity in drylands may depend on the sensitivity of interactions between plants and biocrusts. Given future climate variability, it is essential to understand how interactions may be context-dependent with precipitation regime. Furthermore, little is known about the additional interactions of...

journal_title：American journal of botany

authors： Dettweiler-Robinson E,Sinsabaugh RL,Rudgers JA

更新日期：2018-07-01 00:00:00

abstract：:Sphenobaiera huangii (Sze) Hsü is typical Early Mesozoic fossil foliage of Ginkgoales in China. It has been recorded from the Upper Triassic to the Lower Jurassic. The cuticular anatomy is investigated based on material from the type locality, Lower Jurassic Hsiangchi Formation, Zigui County, Hubei Province. The speci...

journal_title：American journal of botany

authors： Wang Y,Guignard G,Thévenard F,Dilcher D,Barale G,Mosbrugger V,Yang X,Mei S

更新日期：2005-04-01 00:00:00

abstract：:Phylogenetic relationships among embryophytes (tracheophytes, mosses, liverworts, and hornworts) were examined using 21 newly generated mitochondrial small-subunit (19S) rDNA sequences. The "core" 19S rDNA contained more phylogenetically informative sites and lower homoplasy than either nuclear 18S or plastid 16S rDNA...

journal_title：American journal of botany

authors： Duff RJ,Nickrent DL

更新日期：1999-03-01 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：:The evolutionary origins of the morphological and taxonomic diversity of angiosperms is poorly known. We used the genus Melianthus to explore the diversification of the southern African flora. Melianthus comprises eight species, and a phylogeny based on one nuclear and two plastid genes, as well as a morphological dat...

journal_title：American journal of botany

authors： Linder HP,Dlamini T,Henning J,Verboom GA

更新日期：2006-07-01 00:00:00