Abstract:
BACKGROUND:Carboxylate-releasing cluster roots of Proteaceae play a key role in acquiring phosphorus (P) from ancient nutrient-impoverished soils in Australia. However, cluster roots are also found in Proteaceae on young, P-rich soils in Chile where they allow P acquisition from soils that strongly sorb P. SCOPE:Unlike Proteaceae in Australia that tend to proficiently remobilize P from senescent leaves, Chilean Proteaceae produce leaf litter rich in P. Consequently, they may act as ecosystem engineers, providing P for plants without specialized roots to access sorbed P. We propose a similar ecosystem-engineering role for species that release large amounts of carboxylates in other relatively young, strongly P-sorbing substrates, e.g. young acidic volcanic deposits and calcareous dunes. Many of these species also fix atmospheric nitrogen and release nutrient-rich litter, but their role as ecosystem engineers is commonly ascribed only to their diazotrophic nature. CONCLUSIONS:We propose that the P-mobilizing capacity of Proteaceae on young soils, which contain an abundance of P, but where P is poorly available, in combination with inefficient nutrient remobilization from senescing leaves allows these species to function as ecosystem engineers. We suggest that diazotrophic species that colonize young soils with strong P-sorption potential should be considered for their positive effect on P availability, as well as their widely accepted role in nitrogen fixation. Their P-mobilizing activity possibly also enhances their nitrogen-fixing capacity. These diazotrophic species may therefore facilitate the establishment and growth of species with less-efficient P-uptake strategies on more-developed soils with low P availability through similar mechanisms. We argue that the significance of cluster roots and high carboxylate exudation in the development of young ecosystems is probably far more important than has been envisaged thus far.
journal_name
Ann Botjournal_title
Annals of botanyauthors
Lambers H,Bishop JG,Hopper SD,Laliberté E,Zúñiga-Feest Adoi
10.1093/aob/mcs130subject
Has Abstractpub_date
2012-07-01 00:00:00pages
329-48issue
2eissn
0305-7364issn
1095-8290pii
mcs130journal_volume
110pub_type
杂志文章,评审相关文献
ANNALS OF BOTANY文献大全abstract:BACKGROUND AND AIMS:Ecologists are increasingly using plant functional traits to predict community assembly, but few studies have linked functional traits to species' responses to fine-scale resource gradients. In this study, it was tested whether saplings of woody species partition fine-scale gradients in light availa...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcw184
更新日期:2016-12-01 00:00:00
abstract:BACKGROUND AND AIMS:Plants respond to the spatial and temporal heterogeneity of a resource supply. However, their responses will depend on intraspecific competition for resource acquisition. Although plants are subject to various intensities of intraspecific competition, most studies of resource heterogeneity have been...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcq096
更新日期:2010-07-01 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
pub_type: 杂志文章
doi:10.1093/aob/mcm017
更新日期:2007-05-01 00:00:00
abstract:BACKGROUND:Plants are sessile organisms that have the ability to integrate external cues into metabolic and developmental signals. The cues initiate specific signal cascades that can enhance the tolerance of plants to stress, and these mechanisms are crucial to the survival and fitness of plants. The adaption of plants...
journal_title:Annals of botany
pub_type: 杂志文章,评审
doi:10.1093/aob/mcv063
更新日期:2015-09-01 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
pub_type: 杂志文章
doi:10.1093/aob/mcq252
更新日期:2011-03-01 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
pub_type: 杂志文章
doi:10.1093/aob/mcn161
更新日期:2008-11-01 00:00:00
abstract:BACKGROUND AND AIMS:The Quadrifaria group of Paspalum (Poaceae, Paniceae) comprises species native to the subtropical and temperate regions of South America. The purpose of this research was to characterize the I genomes in five species of this group and to establish phylogenetic relationships among them. METHODS:Prom...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mci168
更新日期:2005-08-01 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:In this review we report on recent literature concerned with studies of gynodioecy, or the co-occurrence of female and hermaphrodite individuals in natural plant populations. Rather than review this literature in its entirety, our focus is on the interplay between theoretical and empirical approaches to the ...
journal_title:Annals of botany
pub_type: 杂志文章,评审
doi:10.1093/aob/mcp141
更新日期:2009-09-01 00:00:00
abstract:BACKGROUND AND AIMS:When root-zone O(2) deficiency occurs together with salinity, regulation of shoot ion concentrations is compromised even more than under salinity alone. Tolerance was evaluated amongst 34 accessions of Hordeum marinum, a wild species in the Triticeae, to combined salinity and root-zone O(2) deficien...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcn142
更新日期:2009-01-01 00:00:00
abstract:BACKGROUND AND SCOPE:Self-incompatibility (SI) in flowering plants ensures the maintenance of genetic diversity by ensuring outbreeding. Different genetic and mechanistic systems of SI among flowering plants suggest either multiple origins of SI or considerable evolutionary diversification. In the grasses, SI is based ...
journal_title:Annals of botany
pub_type: 杂志文章,评审
doi:10.1093/aob/mcr186
更新日期:2011-09-01 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:Backgrounds and Aims:Gain or loss of floral nectar, an innovation in floral traits, has occurred in diverse lineages of flowering plants, but the causes of reverse transitions (gain of nectar) remain unclear. Phylogenetic studies show multiple gains and losses of floral nectar in the species-rich genus Pedicularis. Her...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcy102
更新日期:2019-01-23 00:00:00
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 charact...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcr159
更新日期:2012-02-01 00:00:00
abstract:BACKGROUND AND AIMS:Few studies have examined the dynamics of specialist plant-pollinator interactions at a geographical scale. This knowledge is crucial for a more general evolutionary and ecological understanding of specialized plant-pollinator systems. In the present study, variations in pollinator activity, assembl...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcn154
更新日期:2008-11-01 00:00:00
abstract:BACKGROUND AND AIMS:Data are presented from 39 species of mosses and 16 liverworts for ratios of chlorophylls and total carotenoids, and light saturation of photosynthetic electron flow or photosynthetic CO2 uptake, in relation to the postulate that bryophyte cells in general show shade-plant characteristics. METHODS:...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mch178
更新日期:2004-10-01 00:00:00
abstract:BACKGROUND:Effects of cooling rates on bud frost hardiness have been studied but there is little information on bud responses to thawing. Since the cell wall pore size has been found to increase with boron (B) deficiency, B deficiency may affect the supercooling ability of buds in winter. METHODS:The effects of durati...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcl008
更新日期:2006-04-01 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: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
pub_type: 杂志文章
doi:10.1093/aob/mcl160
更新日期:2006-10-01 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:BACKGROUND AND AIMS:Land-use changes and associated extinction/colonization dynamics can have a large impact on population genetic diversity of plant species. The aim of this study was to investigate genetic diversity in a founding population of the self-incompatible forest herb Primula elatior and to elucidate the pro...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcn253
更新日期:2009-03-01 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
pub_type: 杂志文章
doi:10.1093/aob/mcm012
更新日期:2007-04-01 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: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 AND AIMS:Initial release height and settling speed of diaspores are biologically controlled components which are key to modelling wind dispersal. Most Sphagnum (peat moss) species have explosive spore liberation. In this study, how capsule and spore sizes affect the height to which spores are propelled were ...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcp288
更新日期:2010-02-01 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
pub_type: 杂志文章
doi:10.1093/aob/mct214
更新日期:2013-12-01 00:00:00
abstract:Background and Aims:Bird pollination is rare among species in the genus Utricularia, and has evolved independently in two lineages of this genus. In Western Australia, the Western Spinebill, Acanthorhynchus superciliosus, visits flowers of Utricularia menziesii (section Pleiochasia: subgenus Polypompholyx). This study ...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcy163
更新日期:2019-01-01 00:00:00
abstract:BACKGROUND AND AIMS:Seeds of epiphytes must land on branches with suitable substrates and microclimates to germinate and for the resulting seedlings to survive. It is important to understand the fate of seeds and seedlings in order to model populations, but this is often neglected when only established plants are inclu...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mci115
更新日期:2005-05-01 00:00:00
abstract:BACKGROUND AND SCOPE:Models of nectar formation and exudation in multilayered nectaries with modified stomata or permeable cuticle are evaluated. In the current symplasmic model the pre-nectar moves from terminal phloem through the symplasm into the apoplasm (cell walls and intercellular spaces) with nectar formation b...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcp302
更新日期:2010-03-01 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