Annals of Botany

Print ISSN
0305-7364
Electronic ISSN
1095-8290
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http://aob.oxfordjournals.org
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Article count
2486
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  1. Plant nitrogen dynamics and nitrogen-use strategies under altered nitrogen seasonality and competition.

    Annals of Botany 100(4):821 (2007) PMID 17704500 PMCID PMC2749635

    Numerous studies have examined the effects of climatic factors on the distribution of C(3) and C(4) grasses in various regions throughout the world, but the role of seasonal fluctuations in temperature, precipitation and soil N availability in regulating growth and competition of these two funct...
  2. Seedling growth strategies in Bauhinia species: comparing lianas and trees.

    Annals of Botany 100(4):831 (2007) PMID 17720978 PMCID PMC2749636

    Lianas are expected to differ from trees in their growth strategies. As a result these two groups of woody species will have different spatial distributions: lianas are more common in high light environments. This study determines the differences in growth patterns, biomass allocation and leaf t...
  3. Relationship between shoot-rooting and root-sprouting abilities and the carbohydrate and nitrogen reserves of Mediterranean dwarf shrubs.

    Annals of Botany 100(4):865 (2007) PMID 17728338 PMCID PMC2749641

    This study analysed the differences in nitrogen (N), non-structural carbohydrates (NSC) and biomass allocation to the roots and shoots of 18 species of Mediterranean dwarf shrubs with different shoot-rooting and resprouting abilities. Root N and NSC concentrations of strict root-sprouters and sp...
  4. Somatic embryogenesis in peach palm using the thin cell layer technique: induction, morpho-histological aspects and AFLP analysis of somaclonal variation.

    Annals of Botany 100(4):699 (2007) PMID 17670751 PMCID PMC2749624

    The thin cell layer (TCL) technique is based on the use of very small explants and has allowed enhanced in vitro morphogenesis in several plant species. The present study evaluated the TCL technique as a procedure for somatic embryo production and plantlet regeneration of peach palm. TCL explant...
  5. Modelling wheat growth and yield losses from late epidemics of foliar diseases using loss of green leaf area per layer and pre-anthesis reserves.

    Annals of Botany 100(4):777 (2007) PMID 17686762 PMCID PMC2749629

    Crop protection strategies, based on preventing quantitative crop losses rather than pest outbreaks, are being developed as a promising way to reduce fungicide use. The Bastiaans' model was applied to winter wheat crops (Triticum aestivum) affected by leaf rust (Puccinia triticina) and Septoria ...
  6. Chill-induced decrease in capacity of RuBP carboxylation and associated H2O2 accumulation in cucumber leaves are alleviated by grafting onto figleaf gourd.

    Annals of Botany 100(4):839 (2007) PMID 17761689 PMCID PMC2749637

    Chilling results in a significant decrease in Rubisco content and increased generation of reactive oxygen species (ROS) in cucumber (Cucumis sativus), a chilling-sensitive species. The role of roots in the regulation of the tolerance is unknown. Here, cucumber plants grafted onto figleaf gourd (...
  7. Two new nuclear isolation buffers for plant DNA flow cytometry: a test with 37 species.

    Annals of Botany 100(4):875 (2007) PMID 17684025 PMCID PMC2749623

    After the initial boom in the application of flow cytometry in plant sciences in the late 1980s and early 1990s, which was accompanied by development of many nuclear isolation buffers, only a few efforts were made to develop new buffer formulas. In this work, recent data on the performance of nu...
  8. Population genetic structure and hybridization patterns in the Mediterranean endemics Phlomis lychnitis and P. crinita (Lamiaceae).

    Annals of Botany 100(4):735 (2007) PMID 17660181 PMCID PMC2749625

    The historical influence of gene flow and genetic drift after the last glacial phase of the Quaternary Period is reflected in current levels of genetic diversity and population structure of plant species. Moreover, hybridization after secondary contact might also affect population genetic divers...
  9. Micromorphology of the labellum and floral spur of Cryptocentrum Benth. and Sepalosaccus Schltr. (Maxillariinae: Orchidaceae).

    Annals of Botany 100(4):797 (2007) PMID 17686763 PMCID PMC2749631

    Gross vegetative and floral morphology, as well as modern molecular techniques, indicate that Cryptocentrum Benth. and Sepalosaccus Schltr. are related to Maxillaria Ruiz & Pav. However, they differ from Maxillaria in their possession of floral spurs and, in this respect, are atypical of Maxilla...
  10. On the balance between niche and neutral processes as drivers of community structure along a successional gradient: insights from alpine and sub-alpine meadow communities.

    Annals of Botany 100(4):807 (2007) PMID 17720679 PMCID PMC2749632

    Neutral theory predicts that the diversity and relative abundance of species in ecological communities do not depend on their specific traits. This prediction remains controversial, as many studies suggest that variations in the niches of species determine the structure of communities. The aim o...
  11. Physiological and biochemical tools useful in drought-tolerance detection in genotypes of winter triticale: accumulation of ferulic acid correlates with drought tolerance.

    Annals of Botany 100(4):767 (2007) PMID 17684022 PMCID PMC2749628

    The objectives of this study were to investigate whether a classification of triticale genotypes into drought-tolerant and drought-sensitive types based on field performance trials correlates with a classification based on measurements of some physiological and biochemical parameters in greenhou...
  12. Oxidative stress and antioxidants in tomato (Solanum lycopersicum) plants subjected to boron toxicity.

    Annals of Botany 100(4):747 (2007) PMID 17660516 PMCID PMC2749626

    Boron (B) toxicity triggers the formation of reactive oxygen species in plant tissues. However, there is still a lack of knowledge as to how B toxicity affects the plant antioxidant defence system. It has been suggested that ascorbate could be important against B stress, although existing inform...
  13. Variability in floral scent in rewarding and deceptive orchids: the signature of pollinator-imposed selection?

    Annals of Botany 100(4):757 (2007) PMID 17684024 PMCID PMC2749627

    A comparative investigation was made of floral scent variation in the closely related, food-rewarding Anacamptis coriophora and the food-deceptive Anacamptis morio in order to identify patterns of variability of odour compounds in the two species and their role in pollinator attraction/avoidance...
  14. Influence of a weak DC electric field on root meristem architecture.

    Annals of Botany 100(4):791 (2007) PMID 17686761 PMCID PMC2749630

    Electric fields are an important environmental factor that can influence the development of plants organs. Such a field can either inhibit or stimulate root growth, and may also affect the direction of growth. Many developmental processes directly or indirectly depend upon the activity of the ro...
  15. The barley phytomer.

    Annals of Botany 100(4):725 (2007) PMID 17901062 PMCID PMC2749621

    Morphological mutants have been useful in elucidating the phytomeric structure of plants. Recently described mutants have shed new light on the ontogeny (development of plant structures) and the phytomeric system of barley (Hordeum vulgare). Since the current model for barley phytomers was not a...
  16. Sympodial construction of Fibonacci-type leaf rosettes in Pinguicula moranensis (Lentibulariaceae).

    Annals of Botany 100(4):857 (2007) PMID 17720680 PMCID PMC2749640

    The leaf rosettes of the carnivorous Pinguicula moranensis follow a spiral phyllotaxis approaching a Fibonacci pattern while the stalked flowers arise from extra-axillary sites between the leaves. The organization of this rosette has been discussed by various authors, with various results. The a...
  17. A comparative analysis of the temperature response of leaf elongation in Bromus stamineus and Lolium perenne plants in the field: intrinsic and size-mediated effects.

    Annals of Botany 100(4):813 (2007) PMID 17717025 PMCID PMC2749633

    Growth of grass species in temperate-humid regions is restricted by low temperatures. This study analyses the origin (intrinsic or size-mediated) and mechanisms (activity of individual meristems vs. number of active meristems) of differences between Bromus stamineus and Lolium perenne in the res...
  18. Jasmonates: an update on biosynthesis, signal transduction and action in plant stress response, growth and development.

    Annals of Botany 100(4):681 (2007) PMID 17513307 PMCID PMC2749622

    Jasmonates are ubiquitously occurring lipid-derived compounds with signal functions in plant responses to abiotic and biotic stresses, as well as in plant growth and development. Jasmonic acid and its various metabolites are members of the oxylipin family. Many of them alter gene expression posi...
  19. Oxygen concentrations inside the traps of the carnivorous plants Utricularia and Genlisea (Lentibulariaceae).

    Annals of Botany 100(4):849 (2007) PMID 17720681 PMCID PMC2749638

    Species of Utricularia and Genlisea (Lentibulariaceae) are carnivorous, capturing small prey in traps which are physiologically very active, with abundant quadrifid and bifid glands. Traps of Utricularia have walls composed of two cell layers, and are filled with water. Diverse communities of co...
  20. Guadua zuloagae sp. nov., the first petrified bamboo culm record from the Ituzaingó Formation (Pliocene), Paraná basin, Argentina.

    Annals of Botany 100(4):711 (2007) PMID 17728337 PMCID PMC2749634

    The anatomical characterization and morphology of Guadua zuloagae nov. sp. (Poaceae-Bambusoideae) culm was determined. This material was collected at the Toma Vieja fossil locality, Paraná basin, Argentina. This fossil culm is the first record of Bambusoideae in sediments of the Pliocene from th...