Abstract:
BACKGROUND AND METHODS:Polyploidy results in genetic turmoil, much of which is associated with new phenotypes that result in speciation. Five independent lines of synthetic allotetraploid N. x obtusiata (N x o) were created from crosses between the diploid N. attenuata (Na) (male) and N. obtusifolia (No) (female) and the autotetraploids of Na (NaT) and No (NoT) were synthesized. Their genetic, genomic and phenotypic changes were then compared with those of the parental diploid species (Na and No) as well as to the natural allotetraploids, N. quadrivalvis (Nq) and N. clevelandii (Nc), which formed 1 million years ago from crosses between ancient Na and No. KEY RESULTS:DNA fingerprinting profiles (by UP-PCR) revealed that the five N x o lines shared similar but not identical profiles. Both synthetic and natural polyploidy showed a dosage effect on genome size (as measured in seeds); however, only Nq was associated with a genome upsizing. Phenotypic analysis revealed that at the cellular level, N x o lines had phenotypes intermediate of the parental phenotypes. Both allo- and autotetraploidization had a dosage effect on seed and dry biomass (except for NaT), but not on stalk height at first flower. Nc showed paternal (Na) cellular phenotypes but inherited maternal (No) biomass and seed mass, whereas Nq showed maternal (No) cellular phenotypes but inherited paternal (Na) biomass and seed mass patterns. Principal component analysis grouped Nq with N x o lines, due to similar seed mass, stalk height and genome size. These traits separated Nc, No and Na from Nq and N x o lines, whereas biomass distinguished Na from N x o and Nq lines, and NaT clustered closer to Nq and N x o lines than to Na. CONCLUSIONS:Both allo- and autotetraploidy induce considerable morphological, genetic and genomic changes, many of which are retained by at least one of the natural polyploids. It is proposed that both natural and synthetic polyploids are well suited for studying the evolution of adaptive responses.
journal_name
Ann Botjournal_title
Annals of botanyauthors
Anssour S,Krügel T,Sharbel TF,Saluz HP,Bonaventure G,Baldwin ITdoi
10.1093/aob/mcp058subject
Has Abstractpub_date
2009-06-01 00:00:00pages
1207-17issue
8eissn
0305-7364issn
1095-8290pii
mcp058journal_volume
103pub_type
杂志文章相关文献
ANNALS OF BOTANY文献大全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
pub_type: 杂志文章
doi:10.1093/aob/mcu195
更新日期:2014-12-01 00:00:00
abstract:BACKGROUND AND AIMS:Changes in key traits occurring during the processes of plant domestication have long been subjects of debate. Only in the case of genetic analysis or with extensive plant remains can specific sets of changes be documented. Historical details of the plant domestication processes are rare and other e...
journal_title:Annals of botany
pub_type: 历史文章,杂志文章
doi:10.1093/aob/mcn179
更新日期:2008-12-01 00:00:00
abstract:BACKGROUND AND SCOPE:Over more than 120 years of scientific study since Schimper's seminal work, the recognized categories of structurally dependent plants have changed several times. Currently, ignoring parasitic mistletoes, it is usual to distinguish four functional groups: (1) true epiphytes; (2) primary hemiepiphyt...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mct085
更新日期:2013-06-01 00:00:00
abstract:BACKGROUND AND AIMS:Hydration, rupture and exine opening due to the sudden and large expansion of intine are typical of taxoid-type pollen grains. A hemispheric outgrowth external to the exine was observed on Cupressus and Juniperus pollen grains before the intine swelling and exine release. However, the actual existen...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcr144
更新日期:2011-08-01 00:00:00
abstract:BACKGROUND AND AIMS:Mechanical perturbation is known to inhibit elongation of the inflorescence stem of Arabidopsis thaliana. The phenomenon has been reported widely for both herbaceous and woody plants, and has implications for how plants adjust their size and form to survive in mechanically perturbed environments. Wh...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcq227
更新日期:2011-02-01 00:00:00
abstract:BACKGROUND AND AIMS:A reduction in offspring fitness resulting from mating between neighbours is interpreted as biparental inbreeding depression. However, little is known about the relationship between the parents' genetic relatedness and biparental inbreeding depression in their progeny in natural populations. This st...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcq018
更新日期:2010-04-01 00:00:00
abstract:BACKGROUND AND AIMS:Invasion by alien plants may be partially related to disturbance-related increases in nutrient availability and decreases of competition with native species, and to superior competitive ability of the invader. Oxalis pes-caprae is an invasive winter geophyte in the Mediterranean Islands that reprodu...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcl289
更新日期:2007-04-01 00:00:00
abstract:Background and Aims:The nitrogen (N) to phosphorus (P) ratio (N:P) has been widely used as a threshold for identifying nutrient limitations in terrestrial plants; however, the associated reliability has not been well assessed. Methods:The uncertainty of nutrient limitations caused by the N:P threshold was evaluated us...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcx106
更新日期:2017-11-28 00:00:00
abstract:BACKGROUND AND AIMS:The genus Olea (Oleaceae) includes approx. 40 taxa of evergreen shrubs and trees classified in three subgenera, Olea, Paniculatae and Tetrapilus, the first of which has two sections (Olea and Ligustroides). Olive trees (the O. europaea complex) have been the subject of intensive research, whereas li...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcp105
更新日期:2009-07-01 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
pub_type: 杂志文章
doi:10.1093/aob/mct221
更新日期:2013-12-01 00:00:00
abstract:BACKGROUND AND AIMS:Latewood formation in conifers occurs during the later part of the growing season, when the cell division activity of the cambium declines. Changes in temperature might be important for wood formation in trees. Therefore, the effects of a rapid decrease in temperature on cellular morphology of trach...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcs149
更新日期:2012-09-01 00:00:00
abstract:BACKGROUND AND AIMS:Polyploids, organisms that have multiple sets of chromosomes, are common in certain plant and animal taxa. However, there are only a few reports of intraspecific ploidy variation within the genus Quercus. The aim of the study was to investigate the suspected ploidy level of two oaks that have unusua...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcm043
更新日期:2007-05-01 00:00:00
abstract:BACKGROUND AND AIMS:Biotic and abiotic stressors can cause different defoliation patterns within trees. Foliar pathogens of conifers commonly prefer older needles and infection with defoliation that progresses from the bottom crown to the top. The functional role of the lower crown of trees is a key question to address...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcaa013
更新日期:2020-05-13 00:00:00
abstract:BACKGROUND AND AIMS:During the Mesozoic, the polar regions supported coniferous forests that experienced warm climates, a CO(2)-rich atmosphere and extreme seasonal variations in daylight. How the interaction between the last two factors might have influenced water use of these conifers was investigated. An experimenta...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcp108
更新日期:2009-07-01 00:00:00
abstract::The genus Reynoutria is represented by four taxa in the Czech Republic: Reynoutria japonica var. japonica, R. japonica var. compacta, R. sachalinensis and R. xbohemica. By using flow cytometry, cytological variability within the genus is described based on 257 Reynoutria samples. The varieties of R. japonica are cytol...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcg141
更新日期:2003-08-01 00:00:00
abstract:Background:Recent application of molecular-based technologies has considerably advanced our understanding of complex processes in plant-pathogen interactions and their key components such as PAMPs, PRRs, effectors and R-genes. To develop novel control strategies for disease prevention in citrus, it is essential to expa...
journal_title:Annals of botany
pub_type: 杂志文章,评审
doi:10.1093/aob/mcw238
更新日期:2017-03-01 00:00:00
abstract:BACKGROUND AND AIMS:During sexual reproduction in higher angiosperms, the pollen tubes are directed to the ovules in the pistil to deliver sperm cells. This pollen tube attraction is highly species specific, and a group of small secreted proteins, TfCRPs, are necessary for this process in Torenia fournieri. METHODS:A ...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcr111
更新日期:2011-09-01 00:00:00
abstract:BACKGROUND AND AIMS:Sea level rise (SLR) associated with climate change is intensifying permanent submersion and salinity in salt marshes. In this scenario, hybridization between native and invasive species may result in hybrids having greater tolerance of abiotic stress factors than their parents. Thus, understanding ...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcz170
更新日期:2020-02-03 00:00:00
abstract:BACKGROUND AIMS:One of the classic examples of an allopolyploid is Iris versicolor, 'Blue Flag' (2n = 108), first studied by Edgar Anderson and later popularized by George Ledyard Stebbins in cytogenetics and evolutionary text-books. It is revisited here using modern molecular and cytogenetic tools to investigate its p...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcm116
更新日期:2007-08-01 00:00:00
abstract:BACKGROUND AND AIMS:Delayed selfing is the predominant mode of autonomous self-pollination in flowering plants. However, few delayed selfing mechanisms have been documented. This research aims to explore a new delayed selfing mechanism induced by stigmatic fluid in Roscoea debilis, a small perennial ginger. METHODS:Fl...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcs169
更新日期:2012-10-01 00:00:00
abstract:BACKGROUND AND AIMS:Serpentine soils are characterized by the presence of heavy metals (Ni and Cr) and excess Mg; these elements often suppress plant growth. Picea glehnii is nevertheless distributed widely on serpentine soils in northern Japan. Growth characteristics were compared among P. glehnii, Picea jezoensis (di...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mci063
更新日期:2005-03-01 00:00:00
abstract:BACKGROUND AND AIMS:Late-acting self-incompatibility (LSI), in which selfed flowers fail to form fruits despite apparently successful growth of the pollen tubes to the ovules, is a contentious and still poorly understood phenomenon. Some studies have indicated pollen tube-pistil interactions, and major gene control. Ot...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mch141
更新日期:2004-08-01 00:00:00
abstract::Young trees 0.03-1.7 m high of three coexisting Betula species were investigated in four sites of varying soil fertility, but all in full daylight, to separate nutrient and plant size controls on leaf dry mass per unit area (MA), light-saturated foliar photosynthetic electron transport rate (J) and the fraction of pla...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcf025
更新日期:2002-02-01 00:00:00
abstract:BACKGROUND AND AIMS:It is an enduring question as to the mechanisms leading to the high diversity and the processes producing endemics with unusual morphologies in the Himalayan alpine region. In the present study, the phylogenetic relationships and origins of three such endemic genera were analysed, Dolomiaea, Diplazo...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcl259
更新日期:2007-02-01 00:00:00
abstract::Roots of Allium cepa L. grown in aerated water elongate rapidly, but are not graviresponsive. These roots (1) possess extensive columella tissues comprised of cells containing numerous sedimented amyloplasts, (2) lack mucilage on their tips, and (3) are characterized by a weakly polar movement of calcium (Ca) across ...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/oxfordjournals.aob.a087216
更新日期:1986-01-01 00:00:00
abstract:BACKGROUND AND AIMS:The recent assembly of the complete sequence of the plastid genome of the model taxon Physcomitrella patens (Funariaceae, Bryophyta) revealed that a 71-kb fragment, encompassing much of the large single copy region, is inverted. This inversion of 57% of the genome is the largest rearrangement detect...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcm010
更新日期:2007-04-01 00:00:00
abstract:BACKGROUND AND AIMS:The thermoregulatory flower of the Asian sacred lotus (Nelumbo nucifera) can maintain a relatively stable temperature despite great variations in ambient temperature during anthesis. The thermoregulation has been hypothesized to offer a direct energy reward for pollinators in lotus flowers. This stu...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcp051
更新日期:2009-05-01 00:00:00
abstract:BACKGROUND:Low phosphorus (P) availability is a major constraint to soybean growth and production. Developing P-efficient soybean varieties that can efficiently utilize native P and added P in the soils would be a sustainable and economical approach to soybean production. SCOPE:This review summarizes the possible mech...
journal_title:Annals of botany
pub_type: 杂志文章,评审
doi:10.1093/aob/mcq029
更新日期:2010-07-01 00:00:00
abstract::Background and Aims Morphological variation in light-foraging strategies potentially plays important roles in efficient light utilization and carbon assimilation in spatially and temporally heterogeneous environments such as tropical moist forest understorey. By considering a suite of morphological traits at various h...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcw140
更新日期:2016-10-01 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
pub_type: 杂志文章
doi:10.1093/aob/mcf097
更新日期:2002-05-01 00:00:00