Abstract:
BACKGROUND:The trailing edges of species ranges are becoming a subject of increasing interest as the environment changes due to global warming. Trailing edge populations are likely to face extinction because of a decline in numbers and an inability to evolve new adaptations with sufficient speed. Discussions of character change in the trailing edge have focused on physiological, exomorphic and phenological traits. The mating pattern within populations has not been part of the discourse, in spite of the fact that the mating pattern may affect the ability of populations to respond to environmental change and to maintain their sizes. In this paper, the case is made that a substantial increase in self-fertilization rates may occur via plastic responses to stress. SCOPE AND CONCLUSIONS:Small populations on the trailing edge are especially vulnerable to environmental change because of inadequate levels of cross-fertilization. Evidence is presented that a deficiency of cross-seed production is due to inadequate pollinator services and a paucity of self-incompatibility alleles within populations. Evidence also is presented that if plants are self-compatible, self-fertilization may compensate in part for this deficiency through a stress-induced increase in levels of self-compatibility and stress-induced alterations in floral morphology that elevate self-pollination. Whereas increased self-fertility may afford populations the time to adapt to their changing environments, it can be concluded that increased selfing is not a panacea for the ills of environmental change, because it will lead to substantial reductions in genetic diversity, which may render adaptation unlikely.
journal_name
Ann Botjournal_title
Annals of botanyauthors
Levin DAdoi
10.1093/aob/mcr159subject
Has Abstractpub_date
2012-02-01 00:00:00pages
613-20issue
3eissn
0305-7364issn
1095-8290pii
mcr159journal_volume
109pub_type
杂志文章相关文献
ANNALS OF BOTANY文献大全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:Population and environmental pressure have imposed a great challenge on agriculture in China to explore innovative and effective solutions to its pressing plant nutritional problems. Plant nutriomics is a new frontier in plant biology that can provide innovative solutions for improving plant nutrient efficie...
journal_title:Annals of botany
pub_type: 杂志文章,评审
doi:10.1093/aob/mcl116
更新日期:2006-09-01 00:00:00
abstract:BACKGROUND AND AIMS:In spite of major breakthroughs in the last three decades in the identification of root nitrate uptake transporters in plants and the associated regulation of nitrate transport activities, a simplified and operational modelling approach for nitrate uptake is still lacking. This is due mainly to the ...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcu021
更新日期:2014-05-01 00:00:00
abstract:Background:Secondary cell walls (SCWs) form the architecture of terrestrial plant biomass. They reinforce tracheary elements and strengthen fibres to permit upright growth and the formation of forest canopies. The cells that synthesize a strong, thick SCW around their protoplast must undergo a dramatic commitment to ce...
journal_title:Annals of botany
pub_type: 杂志文章,评审
doi:10.1093/aob/mcy005
更新日期:2018-05-11 00:00:00
abstract::Musa L. (Musaceae) is currently separated into five sections (Musa. Rhodochlamys, Callimusa, Australimusa and Ingentimusa) based on chromosome numbers and morphological characters. However, the validation of this classification system is questioned due to the common occurrence of hybridizations across sections and the...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcf170
更新日期:2002-08-01 00:00:00
abstract:BACKGROUND AND AIMS:Pepper (Capsicum annuum, Solanaceae) fruits are consumed worldwide and are of great economic importance. In most species ripening is characterized by important visual and metabolic changes, the latter including emission of volatile organic compounds associated with respiration, destruction of chloro...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcv016
更新日期:2015-09-01 00:00:00
abstract:UNLABELLED:BACKGROUND AND AIMS; This study is an investigation into the floral development and anatomy of two genera of the small family Salvadoraceae, which belongs to the Brassicales in a clade with Batis and Koeberlinia. Salvadoraceae remains little known, despite its wide distribution in arid areas of the globe. Fl...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcp170
更新日期:2009-10-01 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:BACKGROUNDS AND AIMS:Thermogenesis in reproductive organs is known from several plant families, including the Araceae. A study was made of the relationship between temperature increase and spadix size in the subfamily Aroideae in order to determine whether the quantitative variation of heat production among species and...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mci157
更新日期:2005-07-01 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
pub_type: 杂志文章
doi:10.1093/aob/mcs161
更新日期:2013-03-01 00:00:00
abstract::Tylosema esculentum is a long-lived perennial species endemic to arid areas of southern Africa. Its potential as a crop species has long been recognized as a result of the high oil and protein content of its seeds. The reproductive biology and breeding systems of the species were investigated in wild and experimental ...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcf006
更新日期:2002-01-01 00:00:00
abstract:BACKGROUND AND AIMS:Bristol rock cress is among the few plant species in the British Isles considered to have a Mediterranean-montane element. Spatiotemporal patterns of colonization of the British Isles since the last interglacial and after the Last Glacial Maximum (LGM) from mainland Europe are underexplored and have...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcaa053
更新日期:2020-06-19 00:00:00
abstract:BACKGROUND AND AIMS:The discovery of a new species, Haplophyllum bastetanum F.B. Navarro, V.N. Suárez-Santiago & Blanca sp. nov., in the south-east of Spain has prompted the comparative study of species of the Iberian Peninsula, and others related, through morphological, cytogenetic, molecular, distributional and ecolo...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mch176
更新日期:2004-10-01 00:00:00
abstract:BACKGROUND AND AIMS:Cypripedium flavum is a rare, endemic alpine slipper orchid of China, which is under threat from excessive collection and habitat changes. Conservation and re-introduction of C. flavum is restricted by lack of knowledge of the plant's photosynthesis and how that affects reproductive success. The hyp...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mci146
更新日期:2005-07-01 00:00:00
abstract:BACKGROUND AND AIMS:Watermelons, Citrullus species (Cucurbitaceae), are native to Africa and have been cultivated since ancient times. The fruit flesh of wild watermelons is watery, but typically hard-textured, pale-coloured and bland or bitter. The familiar sweet dessert watermelons, C. lanatus, featuring non-bitter, ...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcv077
更新日期:2015-08-01 00:00:00
abstract:BACKGROUND AND AIMS:Tillering has a significant effect on canopy development and, hence, on resource capture, crop growth and grain yield in sorghum. However, the physiological basis of tillering and its regulation by environmental effects are not fully understood. The objective of this study was to understand and quan...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcq079
更新日期:2010-07-01 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
pub_type: 杂志文章
doi:10.1093/aob/mcq269
更新日期:2011-04-01 00:00:00
abstract:BACKGROUND AND AIMS:Although allopolyploidy is a prevalent speciation mechanism in plants, its adaptive consequences are poorly understood. In addition, the effects of allopolyploidy per se (i.e. hybridization and chromosome doubling) can be confounded with those of subsequent evolutionary divergence between allopolypl...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcl137
更新日期:2006-09-01 00:00:00
abstract:BACKGROUND AND AIMS:Leaf area of cotton seedlings (Gossypium hirsutum) can be reduced by as much as 50 % by early season thrips infestations, but it is well documented that plants can regain the difference in leaf area once infestation ceases. The processes involved in the recovery have not been identified. Hypotheses ...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mch125
更新日期:2004-07-01 00:00:00
abstract:BACKGROUND AND AIMS:X-ray fluorescence microscopy (XFM) is a powerful technique to elucidate the distribution of elements within plants. However, accumulated radiation exposure during analysis can lead to structural damage and experimental artefacts including elemental redistribution. To date, acceptable dose limits ha...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcz195
更新日期:2020-03-29 00:00:00
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
pub_type: 杂志文章,评审
doi:10.1093/aob/mcr075
更新日期:2011-05-01 00:00:00
abstract:BACKGROUND AND AIMS:Transgene introgression from crops into wild relatives may increase the resistance of wild plants to herbicides, insects, etc. The chance of transgene introgression depends not only on the rate of hybridization and the establishment of hybrids in local wild populations, but also on the metapopulatio...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mct208
更新日期:2013-11-01 00:00:00
abstract:BACKGROUND AND AIMS:The pericarp weight comprises <17 % of wheat grain weight at harvest. The pericarp supports the hydration and nutrition of both the embryo and endosperm during early grain filling. However, studies of the pericarp and its association with final grain weight have been scarce. This research studied th...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcaa131
更新日期:2020-10-30 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
pub_type: 杂志文章
doi:10.1093/aob/mcp276
更新日期:2010-02-01 00:00:00
abstract:BACKGROUND AND AIMS:Hymenaea stigonocarpa (Fabaceae: Caesalpinioideae) is an endemic tree from the Brazilian cerrado (savanna vegetation), a biome classified as a hotspot for conservation priority. This study investigates the phylogeographic structure of H. stigonocarpa, in order to understand the processes that have l...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcm221
更新日期:2007-12-01 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
pub_type: 杂志文章
doi:10.1093/aob/mcw018
更新日期:2016-04-01 00:00:00
abstract:BACKGROUND AND AIMS:Most Neotropical species of Malpighiaceae produce floral fatty oils in calyx glands to attract pollinating oil-collecting bees, which depend on this resource for reproduction. This specialized type of pollination system tends to be lost in members of the family that occur outside the geographic dist...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcr084
更新日期:2011-06-01 00:00:00
abstract:BACKGROUND AND AIMS:Mimetic seeds simulate the appearance of fleshy fruits and arilled seeds without producing nutritive tissues as a reward for seed dispersers. In this strategy of seed dispersal, seeds may remain attached to the mother plant for long periods after maturity, increasing their availability to naïve seed...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcq068
更新日期:2010-06-01 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
pub_type: 杂志文章
doi:10.1093/aob/mci262
更新日期:2005-11-01 00:00:00
abstract:Background:A brief review is given of Peter W. Barlows' contributions to research on gravity tide-related phenomena in plant biology, or 'selenonastic' effects as he called them, including his early research on root growth. Also, new results are presented here from long-term recordings of spontaneous ultra-weak light e...
journal_title:Annals of botany
pub_type: 传,历史文章,杂志文章
doi:10.1093/aob/mcx176
更新日期:2018-11-03 00:00:00