How effectively does a clinostat mimic the ultrastructural effects of microgravity on plant cells?

abstract：BACKGROUND AND AIMS:Differences in the mating systems and the mechanisms of reproductive isolation between Chamaecrista desvauxii var. graminea and C. desvauxii var. latistipula were examined in the Chapada Diamantina, Brazil. These taxa occur sympatrically, and their populations demonstrate marked morphological differ...

journal_title：Annals of botany

authors： Costa CB,Lambert SM,Borba EL,de Queiroz LP

更新日期：2007-04-01 00:00:00

abstract：BACKGROUND AND AIMS:Dynamic management (DM) of genetic resources aims at maintaining genetic variability between different populations evolving under natural selection in contrasting environments. In 1984, this strategy was applied in a pilot experiment on wheat (Triticum aestivum). Spatio-temporal evolution of earline...

journal_title：Annals of botany

authors： Goldringer I,Prouin C,Rousset M,Galic N,Bonnin I

更新日期：2006-10-01 00:00:00

abstract：BACKGROUND AND AIMS:The aim of this paper was to verify the variation in the loss of seed dormancy during after-ripening and the interspecific and interpopulation variability in the degree of dormancy of seven wild and two cultivated rice species comprising 21 populations and two cultivars. METHODS:Four wild rice spec...

journal_title：Annals of botany

authors： Veasey EA,Karasawa MG,Santos PP,Rosa MS,Mamani E,Oliveira GC

更新日期：2004-12-01 00:00:00

abstract：BACKGROUND AND AIMS:Wetlands are impacted by changes in hydrological regimes that can lead to periods of low water levels. During these periods, aquatic plants experience a drastic change in the mechanical conditions that they encounter, from low gravitational and tensile hydrodynamic forces when exposed to flow under ...

journal_title：Annals of botany

authors： Hamann E,Puijalon S

更新日期：2013-12-01 00:00:00

abstract：BACKGROUND:Many plant species can modify their root architecture to enable them to forage for heterogeneously distributed nutrients in the soil. The foraging response normally involves increased proliferation of lateral roots within nutrient-rich soil patches, but much remains to be understood about the signalling mech...

journal_title：Annals of botany

authors： Walch-Liu P,Ivanov II,Filleur S,Gan Y,Remans T,Forde BG

更新日期：2006-05-01 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 spatial distribution of cytotypes can provide valuable insights into evolutionary patterns of polyploid complexes. In a previous study the macro-scale distribution of the three main cytotypes in Senecio carniolicus (Asteraceae) within the Eastern Alps was characterized. Employing a roughly 12-fo...

journal_title：Annals of botany

authors： Sonnleitner M,Flatscher R,Escobar García P,Rauchová J,Suda J,Schneeweiss GM,Hülber K,Schönswetter P

更新日期：2010-12-01 00:00:00

abstract：BACKGROUND AND AIMS:Understanding the fate and dynamics of cells during callus formation is essential to understanding totipotency and the mechanisms of somatic embryogenesis. Here, the fate of leaf explant cells during the development of embryogenic callus was investigated in the model legume Medicago truncatula. MET...

journal_title：Annals of botany

authors： Wang XD,Nolan KE,Irwanto RR,Sheahan MB,Rose RJ

更新日期：2011-04-01 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:Mongolian Scots pine (Pinus sylvestris var. mongolica) is one of the principal species used for windbreak and sand stabilization in arid and semi-arid areas in northern China. A model-assisted analysis of its canopy architectural development and functions is valuable for better understanding its beh...

journal_title：Annals of botany

authors： Wang F,Kang M,Lu Q,Letort V,Han H,Guo Y,de Reffye P,Li B

更新日期：2011-04-01 00:00:00

abstract：BACKGROUND AND AIMS:Global climate models predict decreases in leaf stomatal conductance and transpiration due to increases in atmospheric CO2. The consequences of these reductions are increases in soil moisture availability and continental scale run-off at decadal time-scales. Thus, a theory explaining the differentia...

journal_title：Annals of botany

authors： Katul G,Manzoni S,Palmroth S,Oren R

更新日期：2010-03-01 00:00:00

abstract：:Production of grain legumes is severely reduced in salt-affected soils because their ability to form and maintain nitrogen-fixing nodules is impaired by both salinity and sodicity (alkalinity). Genotypes of chickpea, Cicer arietinum, with high nodulation capacity under stress were identified by field screening in a so...

journal_title：Annals of botany

authors： Rao DL,Giller KE,Yeo AR,Flowers TJ

更新日期：2002-05-01 00:00:00

abstract：BACKGROUND AND AIMS:Recent biodiversity research has focused on ecosystem processes, but less is known about responses of populations of individual plant species to changing community diversity and implications of genetic variation within species. To address these issues, effects of plant community diversity on the per...

journal_title：Annals of botany

authors： Roscher C,Schumacher J,Weisser WW,Schulze ED

更新日期：2008-07-01 00:00:00

abstract：BACKGROUND AND AIMS:Epipogium aphyllum is a Eurasian achlorophyllous, mycoheterotrophic forest orchid. Due to its rarity, it is often protected, and its biology is poorly known. The identity and pattern of colonization of fungal associates providing carbon to this orchid have not been studied previously. METHODS:Using...

journal_title：Annals of botany

authors： Roy M,Yagame T,Yamato M,Iwase K,Heinz C,Faccio A,Bonfante P,Selosse MA

更新日期：2009-08-01 00:00:00

abstract：Background:Quiescence is a fundamental feature of plant life, which enables plasticity, renewal and fidelity of the somatic cell line. Cellular quiescence is defined by arrest in a particular phase of the cell cycle, typically G1 or G2; however, the regulation of quiescence and proliferation can also be considered acro...

journal_title：Annals of botany

authors： Velappan Y,Signorelli S,Considine MJ

更新日期：2017-10-17 00:00:00

abstract：BACKGROUND AND AIMS:Extreme water stress episodes induce tree mortality, but the physiological mechanisms causing tree death are still poorly understood. This study tests the hypothesis that a potted tree's ability to survive extreme monotonic water stress is determined by the cavitation resistance of its xylem tissue....

journal_title：Annals of botany

authors： Barigah TS,Charrier O,Douris M,Bonhomme M,Herbette S,Améglio T,Fichot R,Brignolas F,Cochard H

更新日期：2013-11-01 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:Buzz pollination involves explosive pollen release in response to vibration, usually by bees. The mechanism of pollen release is poorly understood, and it is not clear which component of vibration (acceleration, frequency, displacement or velocity) is critical; the role of buzz frequency has been pa...

journal_title：Annals of botany

authors： Corbet SA,Huang SQ

更新日期：2014-12-01 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：:The transgene in Agrobacterium-mediated Cry1A(b)-transgenic rice plants has been detected and its chromosomal location determined by fluorescence in situ hybridization (FISH). Eight of the nine transgenic lines tested showed hybridization signals. Signals were located on regions of the chromosome in which fraction len...

journal_title：Annals of botany

authors： Jin WW,Li ZY,Fang Q,Altosaar I,Liu LH,Song YC

更新日期：2002-07-01 00:00:00

abstract：BACKGROUND AND AIMS:In a range of plant species, the distribution of individual mean fecundity is skewed and dominated by a few highly fecund individuals. Larger plants produce greater seed crops, but the exact nature of the relationship between size and reproductive patterns is poorly understood. This is especially cl...

journal_title：Annals of botany

authors： Bogdziewicz M,Szymkowiak J,Calama R,Crone EE,Espelta JM,Lesica P,Marino S,Steele MA,Tenhumberg B,Tyre A,Żywiec M,Kelly D

更新日期：2020-10-06 00:00:00

abstract：:An important function of the seed coat is to deliver nutrients to the embryo. To relate this function to anatomical characteristics, the developing seed coat of pea (Pisum sativum L.) was examined by light- and cryo-scanning electron microscopy (cryo-SEM) from the late pre-storage phase until the end of seed filling. ...

journal_title：Annals of botany

authors： Van Dongen JT,Ammerlaan AM,Wouterlood M,Van Aelst AC,Borstlap AC

更新日期：2003-05-01 00:00:00

abstract：:This light and electron microscope study revealed that leptosporangiate ferns have highly distinctive gametophyte-sporophyte junctions characterized by sporophytic haustoria, the absence of intraplacental spaces and degenerating cells, and the early appearance of wall ingrowths in both generations. Other notable cytol...

journal_title：Annals of botany

authors： Duckett JG,Ligrone R

更新日期：2003-10-01 00:00:00

abstract：:Experiments were carried out at IGER, Aberystwyth, UK to investigate traits of direct relevance to the processes of overwintering and spring growth in white clover (Trifolium repens L.). The plant material used was derived from baseline populations of the cultivar AberHerald and survivor populations generated after 2-...

journal_title：Annals of botany

authors： Collins RP,Helgadóttir A,Fothergill M,Rhodes I

更新日期：2002-03-01 00:00:00

abstract：BACKGROUND AND AIMS:Mixed reproductive strategies may have evolved as a response of plants to cope with environmental variation. One example of a mixed reproductive strategy is dimorphic cleistogamy, where a single plant produces closed, obligately self-pollinated (CL) flowers and open, potentially outcrossed (CH) flow...

journal_title：Annals of botany

authors： Munguía-Rosas MA,Parra-Tabla V,Ollerton J,Cervera JC

更新日期：2012-02-01 00:00:00

abstract：:Stress on plants imposed by flooding of the soil and deeper submergence constitutes one of the major abiotic constraints on growth, species' distribution and agricultural productivity. Flooding stress is also a strong driver of adaptive evolution. This has resulted in a wide range of biochemical, molecular and morphol...

journal_title：Annals of botany

authors： Jackson MB,Colmer TD

更新日期：2005-09-01 00:00:00

abstract：BACKGROUND AND AIMS:Over the last decade, the importance of plant biomechanical properties in shaping wave dissipation efficiency of marsh vegetation has gained growing attention. Here we provide the first analyses of how biomechanical stem properties vary with seasons and along environmental gradients in coastal and e...

journal_title：Annals of botany

authors： Zhu Z,Yang Z,Bouma TJ

更新日期：2020-02-03 00:00:00

abstract：BACKGROUND AND AIMS:The large monophyletic genus Mimosa comprises approx. 500 species, most of which are native to the New World, with Central Brazil being the main centre of radiation. All Brazilian Mimosa spp. so far examined are nodulated by rhizobia in the betaproteobacterial genus Burkholderia. Approximately 10 My...

journal_title：Annals of botany

authors： Gehlot HS,Tak N,Kaushik M,Mitra S,Chen WM,Poweleit N,Panwar D,Poonar N,Parihar R,Tak A,Sankhla IS,Ojha A,Rao SR,Simon MF,Reis Junior FB,Perigolo N,Tripathi AK,Sprent JI,Young JP,James EK,Gyaneshwar P

更新日期：2013-07-01 00:00:00

abstract：BACKGROUND AND AIMS:Spring geophytes require a period of low temperature for proper flower development but the mechanism that underlies the relationship between cold treatment and flowering remains unknown. The present study aims to compare the developmental anatomy and carbohydrate content of the tuberous geophyte Cor...

journal_title：Annals of botany

authors： Khodorova NV,Miroslavov EA,Shavarda AL,Laberche JC,Boitel-Conti M

更新日期：2010-06-01 00:00:00

abstract：BACKGROUND AND AIMS:The time at which plants are transferred to floral inductive conditions affects the onset of flowering and plant morphology, due to juvenility. Plants of Brunonia australis and Calandrinia sp. were used to investigate whether Australian native ephemeral species show a distinct juvenile phase that ca...

journal_title：Annals of botany

authors： Cave RL,Birch CJ,Hammer GL,Erwin JE,Johnston ME

更新日期：2011-07-01 00:00:00