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:Pigment concentrations were measured by spectrophotometer in 80 % acetone extracts. Light-saturation curves were constructed by (modulated) chlorophyll florescence and for some species by infra-red gas analysis. KEY RESULTS:The pigment measurements were widely variable but broadly in line with the findings of previous authors. Median values (mosses/liverworts) were: total chlorophyll, 1.64/3.76 mg g(-1); chlorophyll a : b, 2.29/1.99; chlorophylls : carotenoids, 4.74/6.75). The PPFD values at 95 % saturation (estimated from fitted curves) also ranged widely, but were almost all <1000 micromol m(-2) s(-1); the median for mosses was 583 and for liverworts 214 micromol m(-2) s(-1). The two highest PPFD95% values were from Polytrichum species with lamella systems forming a ventilated photosynthetic tissue. Total chlorophyll, chlorophyll a : b and chlorophylls : carotenoids all correlated significantly with PPFD95%. CONCLUSIONS:Bryophytes include but are not inherently shade plants. Light-saturation levels for species of open sun-exposed habitats are lower than for vascular sun plants and are probably limited by CO2 diffusion into unistratose leaves; this limit can only be exceeded by bryophytes with ventilated photosynthetic tissues which provide increased area for CO2 uptake.
journal_name
Ann Botjournal_title
Annals of botanyauthors
Marschall M,Proctor MCdoi
10.1093/aob/mch178keywords:
subject
Has Abstractpub_date
2004-10-01 00:00:00pages
593-603issue
4eissn
0305-7364issn
1095-8290pii
mch178journal_volume
94pub_type
杂志文章相关文献
ANNALS OF BOTANY文献大全abstract:Background and Aims:Studies of phenotypic plasticity in plants have mainly focused on (1) the effect of environmental variation on whole-plant traits related to the number of modules rather than on (2) the phenotypic consequences of environmental variation in traits of individual modules. Since environmental and develo...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcx093
更新日期:2017-10-17 00:00:00
abstract:BACKGROUND:Sweet melons, Cucumis melo, are a widely grown and highly prized crop. While melons were familiar in antiquity, they were grown mostly for use of the young fruits, which are similar in appearance and taste to cucumbers, C. sativus. The time and place of emergence of sweet melons is obscure, but they are gene...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcs098
更新日期:2012-07-01 00:00:00
abstract::To investigate crown development patterns, branch architecture, branch-level light interception, and leaf and branch dynamics were studied in saplings of a plagiotropically branching tree species, Polyalthia jenkinsii Hk. f. & Thoms. (Annonaceae) in a Malaysian rain forest. Lengths of branches and parts of the branche...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcg008
更新日期:2003-01-01 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
pub_type: 杂志文章
doi:10.1093/aob/mcz063
更新日期:2020-02-03 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
pub_type: 杂志文章
doi:10.1093/aob/mch151
更新日期:2004-09-01 00:00:00
abstract:BACKGROUND:Breeding for advantageous root traits will play a fundamental role in improving the efficiency of water and nutrient acquisition, closing yield gaps, and underpinning the "Evergreen Revolution" that must match crop production with human demand. SCOPE:This preface provides an overview of a Special Issue of A...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcz162
更新日期:2019-10-10 00:00:00
abstract:UNLABELLED:BACKGROUND AND AIMS Habitats in mountains are often isolated. Plants growing in these sites face severe dispersal limitations, but also difficulties for recruitment. The focus was laid on the magnitude of genetic differences among populations but also on the size of potentially occurring clones. METHODS:RAP...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcl182
更新日期:2006-11-01 00:00:00
abstract:BACKGROUND AND AIMS:Reciprocal herkogamy, including enantiostyly and heterostyly, involves reciprocity in the relative positions of the sexual elements within the flower. Such systems result in morphologically and, since pollen is deposited on and captured from different parts of the pollinator, functionally distinct f...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mct188
更新日期:2013-10-01 00:00:00
abstract:BACKGROUND AND AIMS:Enhancing the zinc (Zn) concentration in wheat (Triticum aestivum) grain is a breeding objective in order to improve human Zn nutrition. At enhanced plant Zn uptake, grain Zn levels do not increase proportionally and within the grain the endosperm Zn levels remain below grain Zn levels. This study a...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcr040
更新日期:2011-05-01 00:00:00
abstract::Different gravity environments have been shown to significantly affect leaf-plantlet formation and asexual reproduction in Kalanchoë daigremontiana Ham. and Perr. In the present work, we investigated the effect of gravity at tissue and cell levels. Leaves and leaf-plantlets were cultured for different periods of time ...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1006/anbo.2000.1260
更新日期:2000-11-01 00:00:00
abstract::Adventitious root development in lamina and midrib-petiole junction expiants of sugar beet cv. Primo was investigated using scanning electron microscopy and light microscopy. Primordia developed close to the vascular strands and areas of newly dividing cells (meristematic centres) were seen adjacent to the intrafascic...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1016/S0305-7364(05)80006-X
更新日期:1995-01-01 00:00:00
abstract:BACKGROUND AND AIMS:Sexual dimorphism in morphology, physiology or life history traits is common in dioecious plants at reproductive maturity, but it is typically inconspicuous or absent in juveniles. Although plants of different sexes probably begin to diverge in gene expression both before their reproduction commence...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcy183
更新日期:2019-07-08 00:00:00
abstract:BACKGROUND:The Annals of Botany is a peer-reviewed scientific journal publishing papers on a wide range of topics in plant biology. It first appeared in 1887, making it the oldest continuously published botanical title. The present article gives a historical account of events leading to the founding of the Journal and ...
journal_title:Annals of botany
pub_type: 历史文章,杂志文章
doi:10.1093/aob/mcu220
更新日期:2015-01-01 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:In some dicotyledonous leaves and leaflets, the secondary veins run more-or-less straight to the margins and have well-defined lengths. For a given half-lamina of length L, an equation, previously proposed, relates the lengths of these veins, p, to the distances, l, between the leaf tip and their in...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mch024
更新日期:2004-02-01 00:00:00
abstract:BACKGROUND AND AIMS:Polyploidy has played a major role in the origin of new plant species, probably because of the expansion of polyploid populations in the species' ecological niche, and because reproductive isolation can be established between a new polyploid population and its diploid progenitor species. It is well ...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcz058
更新日期:2019-08-02 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:The cuticle of a limited number of plant species contains cutan, a chemically highly resistant biopolymer. As yet, the biosynthesis of cutan is not fully understood. Attempting to further unravel the origin of cutan, we analysed the chemical composition of enzymatically isolated cuticular membranes ...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcaa056
更新日期:2020-06-19 00:00:00
abstract:Background and Aims:Long terminal repeat-retrotransposons (LTR-RTs) comprise a large portion of plant genomes, with massive repeat blocks distributed across the chromosomes. Eleocharis species have holocentric chromosomes, and show a positive correlation between chromosome numbers and the amount of nuclear DNA. To eval...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcy066
更新日期:2018-08-01 00:00:00
abstract:BACKGROUND AND AIMS:Understanding the evolutionary and ecological forces contributing to the emergence of biodiversity hotspots is of outstanding importance to elucidate how they may withstand current climate changes. Here we explored patterns of phylogenetic and non-phylogenetic plant endemism in a Mediterranean biodi...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcw093
更新日期:2017-01-01 00:00:00
abstract:BACKGROUND AND AIMS:Under predicted climate change scenarios, increased temperatures are likely to predispose trees to leaf and other tissue damage, resulting in plant death and contraction of already narrow distribution ranges in many relictual species. The effects of predicted upward temperatures may be further exace...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcr135
更新日期:2011-08-01 00:00:00
abstract:Background:Linear relationships are commonly observed between shoot magnesium ([Mg]shoot) and shoot calcium ([Ca]shoot) concentrations among angiosperm species growing in the same environment. Scope and Conclusions:This article argues that, in plants that do not exhibit 'luxury' accumulation of Mg or Ca, (1) distinct ...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcy062
更新日期:2018-08-01 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
pub_type: 杂志文章
doi:10.1093/aob/mcl054
更新日期:2006-06-01 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: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
pub_type: 杂志文章
doi:10.1093/aob/mcw104
更新日期:2016-08-01 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
pub_type: 杂志文章
doi:10.1093/aob/mcq218
更新日期:2011-04-01 00:00:00
abstract:BACKGROUND:Most of the water on Earth is seawater, each kilogram of which contains about 35 g of salts, and yet most plants cannot grow in this solution; less than 0·2% of species can develop and reproduce with repeated exposure to seawater. These 'extremophiles' are called halophytes. SCOPE:Improved knowledge of halo...
journal_title:Annals of botany
pub_type:
doi:10.1093/aob/mcu267
更新日期:2015-02-01 00:00:00
abstract::Roots of the aquatic angiosperm Limnobium spongia (Bosc) Steud. were evaluated by light and electron microscopy to determine the distribution of organelle sedimentation towards gravity. Roots of Limnobium are strongly gravitropic. The rootcap consists of only two layers of cells. Although small amyloplasts are present...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/74.1.35
更新日期:1994-07-01 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
abstract:BACKGROUND AND AIMS:While pollinators may in general select for large, morphologically uniform floral phenotypes, drought stress has been proposed as a destabilizing force that may favour small flowers and/or promote floral variation within species. METHODS:The general validity of this concept was checked by surveying...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcp046
更新日期:2009-05-01 00:00:00