Showing papers in "Annals of Botany in 2003"

TL;DR: Factors which possibly affect the effectiveness of antioxidant protection under oxygen deprivation as well as under other environmental stresses are presented.

TL;DR: This work suggests that equally important in a wide range of conditions are processes involving the management of Na(+) movements within the plant, and requires more knowledge of cell-specific transport processes and the consequences of manipulation of transporters and signalling elements in specific cell types.

TL;DR: An overview of the nutritional requirements of different plants for Ca is provided, and how this impacts on natural flora and the Ca content of crops is reviewed.

TL;DR: The new beta growth function predicts a zero growth rate at both the start and end of a precisely defined growth period, which is unique for dealing with determinate growth, and is more suitable than other functions for embedding in process-based crop simulation models to describe the dynamics of organs as sinks to absorb assimilates.

TL;DR: This work integrates various specialized approaches ranging from agronomy to molecular genetics, and demonstrates how plant biology can be harnessed to improve stress tolerance in an important crop species while simultaneously improving basic understanding of tolerance mechanisms and plant processes.

TL;DR: The results show that major evolutionary events are often associated with changes in PCW composition, and that the acquisition of xyloglucan may have been a pre-adaptive advantage that allowed colonization of land.

TL;DR: Complete sequencing of the arabidopsis genome until no gaps remain at telomeres, nucleolar organizing regions or centromeres is still needed to provide the first precise angiosperm C-value as a benchmark calibration standard for plant genomes, and to ensure that no genes have been missed in arbidopsis, especially in centromeric regions, which are clearly larger than once imagined.

TL;DR: The present study evaluated waterlogging tolerance, root porosity and radial O(2) loss from the adventitious roots, of seven upland, three paddy, and two deep-water genotypes of rice, finding that upland types were as tolerant of 30 d soilWaterlogging as the paddy and deep- water types.

TL;DR: To commence use of the term intelligence with regard to plant behaviour will lead to a better understanding of the complexity of plant signal transduction and the discrimination and sensitivity with which plants construct images of their environment, and raises critical questions concerning how plants compute responses at the whole-plant level.

TL;DR: DNA markers for a major QTL for tolerance are shown to be potentially useful in breeding programmes designed to improve submergence tolerance, and recent progress achieved using linkage mapping to locate quantitative traits loci for tolerance inherited from a submergence-tolerant cultivar FR13A is reviewed.

TL;DR: This paper presents a conceptual framework for predicting the ecosystem and regional consequences of changes in plant species composition, which affects most key processes in the cycling of carbon and nutrients in parallel.

TL;DR: Relying solely upon ITS nrDNA analysis to reveal phylogenetic patterns in a complex genus such as Nicotiana is insufficient, and it is clear that conventional analysis of single data sets, such as ITS, is likely to be misleading in at least some respects about evolutionary history.

TL;DR: This fourth edition of MBoC (MBoC4) is an up‐to‐date review of all that is important, and/or new, in the fast‐changing area of the molecular biology of the cell, and to present it in an accessible way.

TL;DR: This is a review of recent advances in understanding of the regulation of JA perception in Arabidopsis thaliana, the different signalling functions of biologically active JAs, the post-translational control of JA responses leading to substantial transcriptional reprogramming, and the influence of other signalling pathways of systemic JA responses.

TL;DR: All exhibit biological activities which could contribute to resistance to pests, pathogens or abiotic stresses, indicating that they may have dual roles in the tubers.

TL;DR: The results indicate that an early rise in cytosolic Ca(2+), as well as a quick establishment of ionic homeostasis, may be essential for the induction of adaptive changes at the cellular aswell as organismal level.

TL;DR: It is proposed that nitric oxide is an important metabolite in hypoxic plant cells and that at least one of the functions of hypoxic stress-induced haemoglobins is to modulate nitrous oxide levels in the cell.

TL;DR: From the current estimates of parameters it is concluded that a larger investment by the crop in fine roots at depth in the soil, and less proliferation of roots in surface layers, would improve yields by accessing extra resources.

TL;DR: Two models for root : shoot allocation were investigated, with and without explicit inclusion of maintenance respiration, and the model without respiration gave qualitatively reasonable results when predictions were compared with observed results from growth experiments with birch and tomato.

TL;DR: Climatic data indicate a shift towards warmer conditions in this mountainous region since the 1940s, with the shift being particularly marked from 1960, and pronounced changes observed in the plant communities reflect the susceptibility of high-mountain Mediterranean species to environmental change.

TL;DR: This Botanical Briefing provides an overview of K+ transporters in various leaf tissues (epidermis, mesophyll, guard cells and vascular system) at both the cellular and organelle levels by analysing electrophysiological and molecular evidence for mechanisms coordinating K+ transport between various leaf cells and tissues in changing environments.

TL;DR: A review of genes in arabidopsis that influence hormonal crosstalk, with emphasis on the gibberellin, abscisic acid and ethylene pathways is given in this paper.

TL;DR: Nestedness analysis of the data set showed that there was predictability and structure to the pattern of plant-pollinator interactions, with generalist insects visiting specialized plants and vice versa, and the research has shown that there is still much to be learned about plant- pollinator interactions in areas of high plant diversity such as South Africa.

TL;DR: The study shows that cotton plants are sensitive to UV-B at both the whole plant and anatomical level.

TL;DR: The pattern of transcript accumulation of a R. palustris alpha-expansin gene correlated with the pattern of petiole elongation upon submergence, indicating a significant increase of the in vitro cell wall extensibility in submerged petioles.

TL;DR: Evidence is discussed which suggests that physiological and ecological factors may interact to inhibit forest regeneration in habitats where there is a risk of prolonged winter-flooding combined with warmer winters and cool moist summers.

TL;DR: The contribution made by functional electron microscopy towards identifying and understanding the reactions of plant roots and shoots to anaerobic stress is reviewed.

TL;DR: The foundations of a marker-assisted scheme for introducing submergence tolerance into agriculturally desirable cultivars of rice are established and this work exploits naturally occurring differences between certain rice lines in their tolerance to submergence.

TL;DR: Results indicate that maximum water content provides an easily quantifiable measure of kernel sink capacity in maize and indicates that Kernel water status parameters may affect the duration of grain filling, but have no discernible impact on kernel growth rate.

TL;DR: These values are targets that can be considered in plant breeding programmes aimed at maximizing carbon or energy retention from photosynthate and analyses of (minimum) metabolic costs of responding to environmental change or pest attack involving increased lignin biosynthesis.