Optimal photosynthetic use of light by tropical tree crowns achieved by adjustment of individual leaf angles and nitrogen content.


BACKGROUND AND AIMS:Theory for optimal allocation of foliar nitrogen (ONA) predicts that both nitrogen concentration and photosynthetic capacity will scale linearly with gradients of insolation within plant canopies. ONA is expected to allow plants to efficiently use both light and nitrogen. However, empirical data generally do not exhibit perfect ONA, and light-use optimization per se is little explored. The aim was to examine to what degree partitioning of nitrogen or light is optimized in the crowns of three tropical canopy tree species. METHODS:Instantaneous photosynthetic photon flux density (PPFD) incident on the adaxial surface of individual leaves was measured along vertical PPFD gradients in tree canopies at a frequency of 0.5 Hz over 9-17 d, and summed to obtain the average daily integral of PPFD for each leaf to characterize its insolation regime. Also measured were leaf N per area (N(area)), leaf mass per area (LMA), the cosine of leaf inclination and the parameters of the photosynthetic light response curve [photosynthetic capacity (A(max)), dark respiration (R(d)), apparent quantum yield (phi) and curvature (theta)]. The instantaneous PPFD measurements and light response curves were used to estimate leaf daily photosynthesis (A(daily)) for each leaf. KEY RESULTS:Leaf N(area) and A(max) changed as a hyperbolic asymptotic function of the PPFD regime, not the linear relationship predicted by ONA. Despite this suboptimal nitrogen partitioning among leaves, A(daily) did increase linearly with PPFD regime through co-ordinated adjustments in both leaf angle and physiology along canopy gradients in insolation, exhibiting a strong convergence among the three species. CONCLUSIONS:The results suggest that canopy tree leaves in this tropical forest optimize photosynthetic use of PPFD rather than N per se. Tropical tree canopies then can be considered simple 'big-leaves' in which all constituent 'small leaves' use PPFD with the same photosynthetic efficiency.


Ann Bot


Annals of botany


Posada JM,Lechowicz MJ,Kitajima K




Has Abstract


2009-03-01 00:00:00














  • A trade-off between guerrilla and phalanx growth forms in Leymus secalinus under different nutrient supplies.

    abstract:BACKGROUND AND AIMS:A phalanx growth form enables clonal plants to make better use of resource-rich patches, whereas a guerrilla growth form provides them with opportunities to escape from resource-poor sites. Leymus secalinus produces both spreading (guerrilla form) and clumping ramets (phalanx form). Here, the hypoth...

    journal_title:Annals of botany

    pub_type: 杂志文章


    authors: Ye XH,Yu FH,Dong M

    更新日期:2006-07-01 00:00:00

  • Initiation of DNA replication: functional and evolutionary aspects.

    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


    authors: Bryant JA,Aves SJ

    更新日期:2011-05-01 00:00:00

  • Maximum likelihood inference implies a high, not a low, ancestral haploid chromosome number in Araceae, with a critique of the bias introduced by 'x'.

    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

    pub_type: 杂志文章


    authors: Cusimano N,Sousa A,Renner SS

    更新日期:2012-03-01 00:00:00

  • Variation of pollinator assemblages and pollen limitation in a locally specialized system: the oil-producing Nierembergia linariifolia (Solanaceae).

    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


    authors: Cosacov A,Nattero J,Cocucci AA

    更新日期:2008-11-01 00:00:00

  • Drought tolerance is associated with rooting depth and stomatal control of water use in clones of Coffea canephora.

    abstract:BACKGROUND AND AIMS:Drought is a major environmental constraint affecting growth and production of Coffea canephora. Selection of C. canephora clones has been largely empirical as little is known about how clones respond physiologically to drought. Using clones previously shown to differ in drought tolerance, this stud...

    journal_title:Annals of botany

    pub_type: 杂志文章


    authors: Pinheiro HA,Damatta FM,Chaves AR,Loureiro ME,Ducatti C

    更新日期:2005-07-01 00:00:00

  • Juvenility and flowering of Brunonia australis (Goodeniaceae) and Calandrinia sp. (Portulacaceae) in relation to vernalization and daylength.

    abstract:BACKGROUND AND AIMS:The time at which plants are transferred to floral inductive conditions affects the onset of flowering and plant morphology, due to juvenility. Plants of Brunonia australis and Calandrinia sp. were used to investigate whether Australian native ephemeral species show a distinct juvenile phase that ca...

    journal_title:Annals of botany

    pub_type: 杂志文章


    authors: Cave RL,Birch CJ,Hammer GL,Erwin JE,Johnston ME

    更新日期:2011-07-01 00:00:00

  • Morphology and histochemistry of the glandular trichomes of Lippia scaberrima (Verbenaceae).

    abstract:BACKGROUND AND AIMS:Lippia scaberrima, an aromatic indigenous South African plant, with medicinal application, potentially has economic value. The production of essential oil from this plant has not been optimized, and this study of the chemico-morphological characteristics was aimed at determining the location of oil ...

    journal_title:Annals of botany

    pub_type: 杂志文章


    authors: Combrinck S,Du Plooy GW,McCrindle RI,Botha BM

    更新日期:2007-06-01 00:00:00

  • The enigma of sex allocation in Selaginella.

    abstract:Background and Aims:The division of resource investment between male and female functions is poorly known for land plants other than angiosperms. The ancient lycophyte genus Selaginella is similar in some ways to angiosperms (in heterospory and in having sex allocation occur in the sporophyte generation, for example) b...

    journal_title:Annals of botany

    pub_type: 杂志文章


    authors: Petersen KB,Burd M

    更新日期:2018-02-12 00:00:00

  • Spore fitness components do not differ between diploid and allotetraploid species of Dryopteris (Dryopteridaceae).

    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


    authors: Quintanilla LG,Escudero A

    更新日期:2006-09-01 00:00:00

  • Recent advances in the study of gynodioecy: the interface of theory and empiricism.

    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


    authors: McCauley DE,Bailey MF

    更新日期:2009-09-01 00:00:00

  • Mechanism and control of Solanum lycocarpum seed germination.

    abstract:BACKGROUND AND AIMS:Solanaceae seed morphology and physiology have been widely studied but mainly in domesticated crops. The present study aimed to compare the seed morphology and the physiology of germination of Solanum lycocarpum, an important species native to the Brazilian Cerrado, with two species with endospermic...

    journal_title:Annals of botany

    pub_type: 杂志文章


    authors: Pinto LV,Da Silva EA,Davide AC,De Jesus VA,Toorop PE,Hilhorst HW

    更新日期:2007-12-01 00:00:00

  • Floral development and anatomy of Salvadoraceae.

    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


    authors: Ronse De Craene L,Wanntorp L

    更新日期:2009-10-01 00:00:00

  • Does polyploidy facilitate long-distance dispersal?

    abstract:BACKGROUND AND AIMS:The ability of plant lineages to reach all continents contributes substantially to their evolutionary success. This is exemplified by the Poaceae, one of the most successful angiosperm families, in which most higher taxa (tribes, subfamilies) have global distributions. Due to the old age of the ocea...

    journal_title:Annals of botany

    pub_type: 杂志文章


    authors: Linder HP,Barker NP

    更新日期:2014-06-01 00:00:00

  • In Vitro Development from Leaf Explants of Sugar Beet (Beta vulgaris L). Rhizogenesis and the Effect of Sequential Exposure to Auxin and Cytokinin.

    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


    authors: Gürel E,Wren MJ

    更新日期:1995-01-01 00:00:00

  • 'Hemiepiphyte': a confusing term and its history.

    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


    authors: Zotz G

    更新日期:2013-06-01 00:00:00

  • Microgeographic genome size differentiation of the carob tree, Ceratonia siliqua, at 'Evolution Canyon', Israel.

    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

    pub_type: 杂志文章


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

    更新日期:2004-05-01 00:00:00

  • Comparative anatomy of intervessel pits in two mangrove species growing along a natural salinity gradient in Gazi bay, Kenya.

    abstract:BACKGROUND AND AIMS:According to the air-seeding hypothesis, embolism vulnerability in xylem elements is linked directly to bordered pit structure and functioning. To elucidate the adaptive potential of intervessel pits towards fluctuating environmental conditions, two mangrove species with a distinct ecological distri...

    journal_title:Annals of botany

    pub_type: 杂志文章


    authors: Schmitz N,Jansen S,Verheyden A,Kairo JG,Beeckman H,Koedam N

    更新日期:2007-08-01 00:00:00

  • Plant development controls leaf area expansion in alfalfa plants competing for light.

    abstract:BACKGROUND AND AIMS:The growth of crops in a mixture is more variable and difficult to predict than that in pure stands. Light partitioning and crop leaf area expansion play prominent roles in explaining this variability. However, in many crops commonly grown in mixtures, including the forage species alfalfa, the sensi...

    journal_title:Annals of botany

    pub_type: 杂志文章


    authors: Baldissera TC,Frak E,Carvalho PC,Louarn G

    更新日期:2014-01-01 00:00:00

  • Dissecting the 'bacon and eggs' phenotype: transcriptomics of post-anthesis colour change in Lotus.

    abstract:Background and Aims:Post-anthesis colour change (PACC) is widely thought to be an adaptation to signal floral suitability to pollinators. Lotus filicaulis and Lotus sessilifolius are insect-pollinated herbaceous legumes with flowers that open yellow, shift to orange and finally red. This study examines the molecular ba...

    journal_title:Annals of botany

    pub_type: 杂志文章


    authors: Boehm MMA,Ojeda DI,Cronk QCB

    更新日期:2017-10-17 00:00:00

  • Low levels of pyrophosphate in transgenic potato plants expressing E. coli pyrophosphatase lead to decreased vitality under oxygen deficiency.

    abstract:BACKGROUND AND AIMS:The aim of this study was to investigate the importance of pyrophosphate (PPi) for plant metabolism and survival under low oxygen stress. Responses of roots of wild-type potato plants were compared with roots of transgenic plants containing decreased amounts of PPi as a result of the constitutive ex...

    journal_title:Annals of botany

    pub_type: 杂志文章


    authors: Mustroph A,Albrecht G,Hajirezaei M,Grimm B,Biemelt S

    更新日期:2005-09-01 00:00:00

  • Sensitivity of the invasive geophyte Oxalis pes-caprae to nutrient availability and competition.

    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


    authors: Sala A,Verdaguer D,Vilà M

    更新日期:2007-04-01 00:00:00

  • CRootBox: a structural-functional modelling framework for root systems.

    abstract:Background and Aims:Root architecture development determines the sites in soil where roots provide input of carbon and take up water and solutes. However, root architecture is difficult to determine experimentally when grown in opaque soil. Thus, root architecture models have been widely used and been further developed...

    journal_title:Annals of botany

    pub_type: 杂志文章


    authors: Schnepf A,Leitner D,Landl M,Lobet G,Mai TH,Morandage S,Sheng C,Zörner M,Vanderborght J,Vereecken H

    更新日期:2018-04-18 00:00:00

  • Molecular mechanisms governing differential robustness of development and environmental responses in plants.

    abstract:BACKGROUND:Robustness to genetic and environmental perturbation is a salient feature of multicellular organisms. Loss of developmental robustness can lead to severe phenotypic defects and fitness loss. However, perfect robustness, i.e. no variation at all, is evolutionarily unfit as organisms must be able to change phe...

    journal_title:Annals of botany

    pub_type: 杂志文章,评审


    authors: Lachowiec J,Queitsch C,Kliebenstein DJ

    更新日期:2016-04-01 00:00:00

  • Temporal variation in phenotypic gender and expected functional gender within and among individuals in an annual plant.

    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

    pub_type: 杂志文章


    authors: Austen EJ,Weis AE

    更新日期:2014-07-01 00:00:00

  • Arbuscular mycorrhizal fungi in alleviation of salt stress: a review.

    abstract:BACKGROUND:Salt stress has become a major threat to plant growth and productivity. Arbuscular mycorrhizal fungi colonize plant root systems and modulate plant growth in various ways. SCOPE:This review addresses the significance of arbuscular mycorrhiza in alleviation of salt stress and their beneficial effects on plan...

    journal_title:Annals of botany

    pub_type: 杂志文章,评审


    authors: Evelin H,Kapoor R,Giri B

    更新日期:2009-12-01 00:00:00

  • Assessing radiation dose limits for X-ray fluorescence microscopy analysis of plant specimens.

    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


    authors: Jones MWM,Kopittke PM,Casey L,Reinhardt J,Blamey FPC,van der Ent A

    更新日期:2020-03-29 00:00:00

  • Characteristic thickened cell walls of the bracts of the 'eternal flower' Helichrysum bracteatum.

    abstract:BACKGROUND AND AIMS:Helichrysum bracteatum is called an 'eternal flower' and has large, coloured, scarious bracts. These maintain their aesthetic value without wilting or discoloration for many years. There have been no research studies of cell death or cell morphology of the scarious bract, and hence the aim of this w...

    journal_title:Annals of botany

    pub_type: 杂志文章


    authors: Nishikawa K,Ito H,Awano T,Hosokawa M,Yazawa S

    更新日期:2008-07-01 00:00:00

  • Functional heterostyly in Tylosema esculentum (Caesalpinioideae).

    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


    authors: Hartley ML,Tshamekeng E,Thomas SM

    更新日期:2002-01-01 00:00:00

  • Large- and small-scale environmental factors drive distributions of cool-adapted plants in karstic microrefugia.

    abstract:BACKGROUND AND AIMS:Dolines are small- to large-sized bowl-shaped depressions of karst surfaces. They may constitute important microrefugia, as thermal inversion often maintains cooler conditions within them. This study aimed to identify the effects of large- (macroclimate) and small-scale (slope aspect and vegetation ...

    journal_title:Annals of botany

    pub_type: 杂志文章


    authors: Bátori Z,Vojtkó A,Farkas T,Szabó A,Havadtői K,Vojtkó AE,Tölgyesi C,Cseh V,Erdős L,Maák IE,Keppel G

    更新日期:2017-01-01 00:00:00

  • Plant hormones in arbuscular mycorrhizal symbioses: an emerging role for gibberellins.

    abstract:BACKGROUND AND AIMS:Arbuscular mycorrhizal symbioses are important for nutrient acquisition in >80 % of terrestrial plants. Recently there have been major breakthroughs in understanding the signals that regulate colonization by the fungus, but the roles of the known plant hormones are still emerging. Here our understan...

    journal_title:Annals of botany

    pub_type: 杂志文章


    authors: Foo E,Ross JJ,Jones WT,Reid JB

    更新日期:2013-05-01 00:00:00