Initiation of DNA replication: functional and evolutionary aspects.

abstract：BACKGROUND AND AIMS:Apomictic plants maintain functional pollen, and via pollination the genetic factors controlling apomixis can be potentially transferred to congeneric sexual populations. In contrast, the sexual individuals do not fertilize apomictic plants which produce seeds without fertilization of the egg cells....

journal_title：Annals of botany

authors： Hörandl E,Temsch EM

更新日期：2009-07-01 00:00:00

abstract：BACKGROUND:S-RNase-based self-incompatibility (SI) occurs in the Solanaceae, Rosaceae and Plantaginaceae. In all three families, compatibility is controlled by a polymorphic S-locus encoding at least two genes. S-RNases determine the specificity of pollen rejection in the pistil, and S-locus F-box proteins fulfill this...

journal_title：Annals of botany

authors： McClure B,Cruz-García F,Romero C

更新日期：2011-09-01 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：BACKGROUND AND AIMS:Genome size and chromosome numbers are important cytological characters that significantly influence various organismal traits. However, geographical representation of these data is seriously unbalanced, with tropical and subtropical regions being largely neglected. In the present study, an investig...

journal_title：Annals of botany

authors： Leong-Skornicková J,Sída O,Jarolímová V,Sabu M,Fér T,Trávnícek P,Suda J

更新日期：2007-09-01 00:00:00

abstract：BACKGROUND:Opal phytoliths (microscopic silica bodies produced in and between the cells of many plants) are a very resilient, often preserved type of plant microfossil. With the exponentially growing number of phytolith studies, standardization of phytolith morphotype names and description is essential. As a first effo...

journal_title：Annals of botany

authors： International Committee for Phytolith Taxonomy (ICPT).

更新日期：2019-09-24 00:00:00

abstract：BACKGROUND AND AIMS:The leaf anatomy and ultrastructure of Deschampsia antarctica (Poaceae) plants growing in three different habitats (a dry site in the Antarctic tundra, a wet site in a zone exposed to sea spray and a greenhouse) were investigated. The ultrastructure of the leaves of D. antarctica has not been studie...

journal_title：Annals of botany

authors： Gielwanowska I,Szczuka E,Bednara J,Górecki R

更新日期：2005-11-01 00:00:00

abstract：BACKGROUND AND AIMS:Despite a recent new classification, a stable phylogeny for the cycads has been elusive, particularly regarding resolution of Bowenia, Stangeria and Dioon. In this study, five single-copy nuclear genes (SCNGs) are applied to the phylogeny of the order Cycadales. The specific aim is to evaluate sever...

journal_title：Annals of botany

authors： Salas-Leiva DE,Meerow AW,Calonje M,Griffith MP,Francisco-Ortega J,Nakamura K,Stevenson DW,Lewis CE,Namoff S

更新日期：2013-11-01 00:00:00

abstract：BACKGROUND AND AIMS:Species in plant communities segregate along fine-scale hydrological gradients. Although this phenomenon is not unique to fynbos, this community regenerates after fire and therefore provides an opportunity to study the ecological genesis of hydrological niche segregation. METHODS:Following wildfire...

journal_title：Annals of botany

authors： Silvertown J,Araya YN,Linder HP,Gowing DJ

更新日期：2012-11-01 00:00:00

abstract：BACKGROUND AND AIMS:The palm tribe Chamaedoreeae displays flowers arranged in a complex partial inflorescence called an acervulus. This type of partial inflorescence has so far not been reported elsewhere in the largest palm subfamily Arecoideae, which is traditionally characterized by flowers predominantly arranged in...

journal_title：Annals of botany

authors： Ortega-Chávez N,Stauffer FW

更新日期：2011-12-01 00:00:00

abstract：BACKGROUND AND AIMS:Nitrogen (N) levels vary between ecosystems, while the form of available N has a substantial impact on growth, development and perception of stress. Plants have the capacity to assimilate N in the form of either nitrate (NO3-) or ammonium (NH4+). Recent studies revealed that NO3- nutrition increases...

journal_title：Annals of botany

authors： Wany A,Gupta AK,Kumari A,Mishra S,Singh N,Pandey S,Vanvari R,Igamberdiev AU,Fernie AR,Gupta KJ

更新日期：2019-03-14 00:00:00

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:Rhamnogalacturonan II (RGII) is a structurally complex pectic sub-domain composed of more than 12 different sugars and 20 different linkages distributed in five side chains along a homogalacturonan backbone. Although RGII has long been described as highly conserved over plant evolution, recent studi...

journal_title：Annals of botany

authors： Buffetto F,Ropartz D,Zhang XJ,Gilbert HJ,Guillon F,Ralet MC

更新日期：2014-10-01 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：BACKGROUND AND AIMS:Induction of dehydration tolerance is a key to achieving high survival rates in cryopreservation of plant specimens. It has been reported previously that two-step preculturing with sucrose effectively increased desiccation tolerance in axillary buds of gentian (Gentiana scabra), which allow the buds...

journal_title：Annals of botany

authors： Suzuki M,Ishikawa M,Okuda H,Noda K,Kishimoto T,Nakamura T,Ogiwara I,Shimura I,Akihama T

更新日期：2006-06-01 00:00:00

abstract：BACKGROUND:The gorgeous frescoes organized by the master Renaissance painter Raphael Sanzio (1483-1520) and illustrating the heavenly adventures of Cupid and Psyche were painted between 1515 and 1518 to decorate the Roman villa (now known as the Villa Farnesina) of the wealthy Sienese banker Agostino Chigi (1466-1520)....

journal_title：Annals of botany

authors： Janick J,Paris HS

更新日期：2006-02-01 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:Root cortical senescence (RCS) is a poorly understood phenomenon with implications for adaptation to edaphic stress. It was hypothesized that RCS in barley (Hordeum vulgare L.) is (1) accelerated by exogenous ethylene exposure; (2) accompanied by differential expression of ethylene synthesis and sig...

journal_title：Annals of botany

authors： Schneider HM,Wojciechowski T,Postma JA,Brown KM,Lynch JP

更新日期：2018-06-28 00:00:00

abstract：BACKGROUND AND AIMS:For 84 years, botanists have relied on calculating the highest common factor for series of haploid chromosome numbers to arrive at a so-called basic number, x. This was done without consistent (reproducible) reference to species relationships and frequencies of different numbers in a clade. Likeliho...

journal_title：Annals of botany

authors： Cusimano N,Sousa A,Renner SS

更新日期：2012-03-01 00:00:00

abstract：BACKGROUND AND AIMS:We tested whether the local differences in genome size recorded earlier in the wild barley, Hordeum spontaneum, at 'Evolution Canyon', Mount Carmel, Israel, can also be found in other organisms. As a model species for our test we chose the evergreen carob tree, Ceratonia siliqua. METHODS:Genome siz...

journal_title：Annals of botany

authors： Bures P,Pavlícek T,Horová L,Nevo E

更新日期：2004-05-01 00:00:00

abstract：BACKGROUND AND AIMS:Brachypodium distachyon (Brachypodium) is a model system for studying cereal, bioenergy, forage and turf grasses. The genetic and evolutionary basis of the adaptation of this wild grass species to drought stress is largely unknown. Peroxidase (POD) may play a role in plant drought tolerance, but whe...

journal_title：Annals of botany

authors： Luo N,Yu X,Nie G,Liu J,Jiang Y

更新日期：2016-08-01 00:00:00

abstract：BACKGROUND AND AIMS:Adaptive explanations for variation in sex allocation centre on variation in resource status and variation in the mating environment. The latter can occur when dichogamy causes siring opportunity to vary across the flowering season. In this study, it is hypothesized that the widespread tendency towa...

journal_title：Annals of botany

authors： Austen EJ,Weis AE

更新日期：2014-07-01 00:00:00

abstract：BACKGROUND AND AIMS:There are a number of disparate models predicting variation in plant chemical defences between species, and within a single species over space and time. These can give conflicting predictions. Here we review a number of these theories, before assessing their power to predict the spatial-temporal var...

journal_title：Annals of botany

authors： Martinez-Swatson K,Kjøller R,Cozzi F,Simonsen HT,Rønsted N,Barnes C

更新日期：2020-04-25 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 AND AIMS:Macaranga (Euphorbiaceae) is a large genus of dioecious trees with approx. 260 species. To date, only one pollination study of the genus has reported brood-site pollination by thrips in M. hullettii. In this study, the pollination system of Macaranga tanarius is reported. METHODS:The study was cond...

journal_title：Annals of botany

authors： Ishida C,Kono M,Sakai S

更新日期：2009-01-01 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：BACKGROUNDS AND AIMS:Nitrogen nutrition of legumes, which relies both on atmospheric N2 and soil mineral N, remains a major limiting factor of growth. A decade ago, breeders tried to increase N uptake through hypernodulation. Despite their high nodule biomass, hypernodulating mutants were never shown to accumulate more...

journal_title：Annals of botany

authors： Voisin AS,Bourion V,Duc G,Salon C

更新日期：2007-12-01 00:00:00

abstract：BACKGROUND AND AIMS:Mite domatia are small structures on the underside of plant leaves that provide homes for predacious or fungivorous mites. In turn, mites inhabiting domatia defend the plant by consuming leaf herbivores and pathogens, which can result in a domatia-mediated, plant-mite defence mutualism. Several rece...

journal_title：Annals of botany

authors： Weber MG,Porturas LD,Taylor SA

更新日期：2016-09-01 00:00:00

abstract：BACKGROUND AND AIMS:Pollinator specificity facilitates reproductive isolation among plants, and mechanisms that generate specificity influence species boundaries. Long-range volatile attractants, in combination with morphological co-adaptations, are generally regarded as being responsible for maintaining extreme host s...

journal_title：Annals of botany

authors： Wang G,Compton SG,Chen J

更新日期：2013-02-01 00:00:00

abstract：:Background There has been renewed global interest in both genetic and management strategies to improve root system function in order to improve agricultural productivity and minimize environmental damage. Improving root system capture of water and nutrients is an obvious strategy, yet few studies consider the importan...

journal_title：Annals of botany

authors： Thorup-Kristensen K,Kirkegaard J

更新日期：2016-10-01 00:00:00

abstract：BACKGROUND AND AIMS:Genome size is known to be correlated with a number of phenotypic traits associated with cell sizes and cell-division rates. Genome size was therefore used as a proxy for them in order to assess how common plant traits such as height, specific leaf area and seed size/number predict species regional ...

journal_title：Annals of botany

authors： Herben T,Suda J,Klimesová J,Mihulka S,Ríha P,Símová I

更新日期：2012-11-01 00:00:00