Structure and function of plant canopies.

abstract：BACKGROUND:The initiation of DNA replication is a very important and highly regulated step in the cell division cycle. It is of interest to compare different groups of eukaryotic organisms (a) to identify the essential molecular events that occur in all eukaryotes, (b) to start to identify higher-level regulatory mecha...

journal_title：Annals of botany

authors： Bryant JA,Aves SJ

更新日期：2011-05-01 00:00:00

abstract：BACKGROUND AND AIMS:The Marantaceae (550 spp.) is the most derived family in the order Zingiberales and exhibits a complex explosive pollination mechanism. To understand the evolutionary significance of this unique process of pollen transfer, comparative morphological and ecological studies were conducted in Gabon. ME...

journal_title：Annals of botany

authors： Ley AC,Classen-Bockhoff R

更新日期：2009-07-01 00:00:00

abstract：BACKGROUND AND AIMS:Jatropha curcas (jatropha) is an oil crop cultivated in (sub)tropical regions around the world, and holds great promise as a renewable energy source. However, efforts to fully commercialize jatropha are currently hampered by the lack of genetic diversity in the extant breeding germplasm, and by the ...

journal_title：Annals of botany

authors： Vandepitte K,Valdés-Rodríquez OA,Sánchez-Sánchez O,De Kort H,Martinez-Herrera J,García-Pérez E,De Meyer T,Pérez-Vázquez A,Muys B,Honnay O

更新日期：2019-10-29 00:00:00

abstract：BACKGROUND AND AIMS:The role of flower specialization in plant speciation and evolution remains controversial. In this study the evolution of flower traits restricting access to pollinators was analysed in the bifid toadflaxes (Linaria sect. Versicolores), a monophyletic group of ~30 species and subspecies with highly ...

journal_title：Annals of botany

authors： Fernández-Mazuecos M,Blanco-Pastor JL,Gómez JM,Vargas P

更新日期：2013-12-01 00:00:00

abstract：BACKGROUND:The reconstruction of biological processes and human activities during the last glacial cycle relies mainly on data from biological remains. Highly abundant tissues, such as wood, are candidates for a genetic analysis of past populations. While well-authenticated DNA has now been recovered from various fossi...

journal_title：Annals of botany

authors： Liepelt S,Sperisen C,Deguilloux MF,Petit RJ,Kissling R,Spencer M,de Beaulieu JL,Taberlet P,Gielly L,Ziegenhagen B

更新日期：2006-11-01 00:00:00

abstract：:Background and Aims Mating systems of plants are diverse and evolutionarily labile. Abiotic environmental factors, such as seasonal drought, may impose selection on physiological traits that could lead to transitions in mating system if physiological traits are genetically correlated with traits that influence mating ...

journal_title：Annals of botany

authors： Ivey CT,Dudley LS,Hove AA,Emms SK,Mazer SJ

更新日期：2016-10-01 00:00:00

abstract：BACKGROUND AND AIMS:The sedge genus Carex, the most diversified angiosperm genus of the northern temperate zone, is renowned for its holocentric chromosomes and karyotype variability. The genus exhibits high variation in chromosome numbers both among and within species. Despite the possibility that this chromosome evol...

journal_title：Annals of botany

authors： Escudero M,Weber JA,Hipp AL

更新日期：2013-08-01 00:00:00

abstract：BACKGROUND AND AIMS:The mobile carbon supply to different compartments of a tree is affected by climate, but its impact on cell-wall chemistry and mechanics remains unknown. To understand better the variability in root growth and biomechanics in mountain forests subjected to substrate mass movement, we investigated roo...

journal_title：Annals of botany

authors： Genet M,Li M,Luo T,Fourcaud T,Clément-Vidal A,Stokes A

更新日期：2011-02-01 00:00:00

abstract：BACKGROUNDS AND AIMS:The rhizosphere priming effect (RPE) has been explained from the perspective of microbial responses to root exudates and nutrient availability. This study introduced a chemical process that could also contribute to RPE: root exudates (organic acid ligands) could liberate mineral-protected carbon (C...

journal_title：Annals of botany

authors： Xu Q,Wang X,Tang C

更新日期：2019-11-27 00:00:00

abstract：BACKGROUND AND AIMS:Woodland spring ephemerals exhibit a relatively short epigeous growth period prior to canopy closure. However, it has been suggested that leaf senescence is induced by a reduction in the carbohydrate sink demand, rather than by changes in light availability. To ascertain whether a potentially higher...

journal_title：Annals of botany

authors： Gutjahr S,Lapointe L

更新日期：2008-11-01 00:00:00

abstract：Background and Aims:During the growing season, the cambium of conifer trees produces successive rows of xylem cells, the tracheids, that sequentially pass through the phases of enlargement and secondary wall thickening before dying and becoming functional. Climate variability can strongly influence the kinetics of morp...

journal_title：Annals of botany

authors： Castagneri D,Fonti P,von Arx G,Carrer M

更新日期：2017-04-01 00:00:00

abstract：BACKGROUND AND AIMS:Recent studies of reproductive biology in ancient angiosperm lineages are beginning to shed light on the early evolution of flowering plants, but comparative studies are restricted by fragmented and meagre species representation in these angiosperm clades. In the present study, the progamic phase, f...

journal_title：Annals of botany

authors： Lora J,Hormaza JI,Herrero M

更新日期：2010-02-01 00:00:00

abstract：BACKGROUND AND AIMS:The Hawaiian silversword alliance (Asteraceae) is one the best examples of a plant adaptive radiation, exhibiting extensive morphological and ecological diversity. No research within this group has addressed the role of geographical isolation, independent of ecological adaptation, in contributing to...

journal_title：Annals of botany

authors： McGlaughlin ME,Friar EA

更新日期：2011-03-01 00:00:00

abstract：BACKGROUND AND AIMS:Natural regeneration of white spruce (Picea glauca) after disturbance has been reported to be very poor. Here a study was made to determine whether C compounds released from understorey species growing together with white spruce could be involved in this regeneration failure, either by (1) changing ...

journal_title：Annals of botany

authors： Castells E,Peñuelas J,Valentine DW

更新日期：2005-06-01 00:00:00

abstract：BACKGROUND AND AIMS:Many previous studies conclude that pre-zygotic barriers such as mechanical isolation account for most reproductive isolation between pairs of taxa. However, the inheritance and persistence of barriers such as these after the first generation of hybridization is rarely quantified, even though it is ...

journal_title：Annals of botany

authors： Larcombe MJ,Costa E Silva J,Tilyard P,Gore P,Potts BM

更新日期：2016-09-01 00:00:00

abstract：BACKGROUND AND AIMS:Theory for optimal allocation of foliar nitrogen (ONA) predicts that both nitrogen concentration and photosynthetic capacity will scale linearly with gradients of insolation within plant canopies. ONA is expected to allow plants to efficiently use both light and nitrogen. However, empirical data gen...

journal_title：Annals of botany

authors： Posada JM,Lechowicz MJ,Kitajima K

更新日期：2009-03-01 00:00:00

abstract：BACKGROUND:The origin of new species and of new forms is one of the fundamental characteristics of evolution. However, the mechanisms that govern the diversity and disparity of lineages remain poorly understood. Particularly unclear are the reasons why some taxa are vastly more species-rich than others and the manner i...

journal_title：Annals of botany

authors： Melzer R,Theißen G

更新日期：2016-04-01 00:00:00

abstract：BACKGROUND AND AIMS:Myrmecochory is a conspicuous feature of several sclerophyll ecosystems around the world but it has received little attention in the semi-arid areas of South America. This study addresses the importance of seed dispersal by ants in a 2500-km(2) area of the Caatinga ecosystem (north-east Brazil) and ...

journal_title：Annals of botany

authors： Leal IR,Wirth R,Tabarelli M

更新日期：2007-05-01 00:00:00

abstract：BACKGROUND AND AIMS:Nuclear DNA amounts of 12 diploid and one tetraploid taxa and 12 natural interspecific hybrids of Cirsium from 102 populations in the Czech Republic, Austria, Slovakia and Hungary were estimated. METHODS:DAPI and PI flow cytometry were used. KEY RESULTS:2C-values of diploid (2n = 34) species varie...

journal_title：Annals of botany

authors： Bures P,Wang YF,Horova L,Suda J

更新日期：2004-09-01 00:00:00

abstract：:To investigate crown development patterns, branch architecture, branch-level light interception, and leaf and branch dynamics were studied in saplings of a plagiotropically branching tree species, Polyalthia jenkinsii Hk. f. & Thoms. (Annonaceae) in a Malaysian rain forest. Lengths of branches and parts of the branche...

journal_title：Annals of botany

authors： Osada N,Takeda H

更新日期：2003-01-01 00:00:00

abstract：BACKGROUND AND AIMS:Pollinator-limited seed-set in some terrestrial orchids is compensated for by the presence of long-lived flowers. This study tests the hypothesis that pollen from these insect-pollinated orchids should be desiccation tolerant and relatively long lived using four closely related UK terrestrial specie...

journal_title：Annals of botany

authors： Marks TR,Seaton PT,Pritchard HW

更新日期：2014-09-01 00:00:00

abstract：BACKGROUND AND AIMS:Mating system is a primary determinant of the ecological and evolutionary dynamics of wild plant populations. Pollen limitation and loss of self-incompatibility genotypes can both act independently to reduce seed set and these effects are commonly observed in fragmented landscapes. This study used a...

journal_title：Annals of botany

authors： Young AG,Broadhurst LM,Thrall PH

更新日期：2012-02-01 00:00:00

abstract：BACKGROUND AND AIMS:Phosphorus commonly limits crop yield and is frequently applied as fertilizer; however, supplies of quality rock phosphate for fertilizer production are diminishing. Plants have evolved many mechanisms to increase their P-fertilizer use efficiency, and an understanding of these traits could result i...

journal_title：Annals of botany

authors： Brown LK,George TS,Thompson JA,Wright G,Lyon J,Dupuy L,Hubbard SF,White PJ

更新日期：2012-07-01 00:00:00

abstract：BACKGROUND AND AIMS:Species and hybrids of the genus Miscanthus contain attributes that make them front-runners among current selections of dedicated bioenergy crops. A key trait for plant biomass conversion to biofuels and biomaterials is cell-wall quality; however, knowledge of cell-wall composition and biology in Mi...

journal_title：Annals of botany

authors： da Costa RM,Lee SJ,Allison GG,Hazen SP,Winters A,Bosch M

更新日期：2014-10-01 00:00:00

abstract：:Culture of cassava somatic embryos on media with an altered macro- and micro-nutrient salt concentration affected embryo development and germination capability. In the tests, quarter-, half-, full- or double-strength Murashige and Skoog (MS) media were compared. The maximum number of somatic embryos differentiated fro...

journal_title：Annals of botany

authors： Groll J,Mycock DJ,Gray VM

更新日期：2002-05-01 00:00:00

abstract：BACKGROUND:Sweet melons, Cucumis melo, are a widely grown and highly prized crop. While melons were familiar in antiquity, they were grown mostly for use of the young fruits, which are similar in appearance and taste to cucumbers, C. sativus. The time and place of emergence of sweet melons is obscure, but they are gene...

journal_title：Annals of botany

authors： Paris HS,Amar Z,Lev E

更新日期：2012-07-01 00:00:00

abstract：BACKGROUND AND AIMS:The aims of this study were to set up proliferation conditions for hairy roots of Coffea arabica regenerated after transformation by Agrobacterium rhizogenes strain A4-RS, and to carry out the morphological and molecular characterization of hairy root clones maintained over the long term. METHODS:A...

journal_title：Annals of botany

authors： Alpizar E,Dechamp E,Lapeyre-Montes F,Guilhaumon C,Bertrand B,Jourdan C,Lashermes P,Etienne H

更新日期：2008-05-01 00:00:00

abstract：BACKGROUND:Studying a process in a new species often relies on focusing our attention to a candidate gene, encoding a protein similar to one with a known function. Not all the choices seem to be prudent. SCOPE:This Viewpoint includes an overview of issues that are encountered during research of candidate genes. Defini...

journal_title：Annals of botany

authors： Samach A

更新日期：2013-03-01 00:00:00

abstract：BACKGROUND AND AIMS:The leaf rosettes of the carnivorous Pinguicula moranensis follow a spiral phyllotaxis approaching a Fibonacci pattern while the stalked flowers arise from extra-axillary sites between the leaves. The organization of this rosette has been discussed by various authors, with various results. The aim o...

journal_title：Annals of botany

authors： Grob V,Pfeifer E,Rutishauser R

更新日期：2007-10-01 00:00:00

abstract：BACKGROUND AND AIMS:The mangrove Rhizophora mucronata has previously been reported to lack annual growth rings, thus barring it from dendrochronological studies. In this study the reported absence of the growth rings was reconsidered and the periodic nature of light and dark brown layers visible on polished stem discs ...

journal_title：Annals of botany

authors： Verheyden A,Kairo JG,Beeckman H,Koedam N

更新日期：2004-07-01 00:00:00