Manipulation of the apoplastic pH of intact plants mimics stomatal and growth responses to water availability and microclimatic variation
The apoplastic pH of intact Forsythiaxintermedia (cv. Lynwood) and tomato (Solanum lycopersicum) plants has been manipulated using buffered foliar sprays, and thereby stomatal conductance (gs), leaf growth rate, and plant water loss have been controlled.

Mycorrhizal and non-mycorrhizal Lactuca sativa plants exhibit contrasting responses to exogenous ABA during drought stress and recovery
The arbuscular mycorrhizal (AM) symbiosis enhances plant tolerance to water deficit through the alteration of plant physiology and the expression of plant genes.

Regulation of Potassium Transport in Leaves: from Molecular to Tissue Level
This Botanical Briefing is aimed at filling that gap by analysing electrophysiological and molecular evidence for mechanisms coordinating K+ transport between various leaf cells and tissues in changing environments.

Stoichiometric response of nitrogen-fixing and non-fixing dicots to manipulations of CO2, nitrogen, and diversity
Human activities have resulted in increased nitrogen deposition and atmospheric CO(2) concentrations in the biosphere, potentially causing significant changes in many ecological processes. (Abstract)

Discrete and Essential Roles of the Multiple Domains of Arabidopsis FHY3 in Mediating Phytochrome A Signal Transduction
Phytochrome A (phyA) is the primary photoreceptor for mediating various far-red light induced responses in higher plants (Abstract)

Transgenerational effects of global environmental change: long-term CO(2) and nitrogen treatments influence offspring growth response to elevated CO(2)
Global environmental changes can have immediate impacts on plant growth, physiology, and phenology (Abstract only)

Cadmium absorption and accumulation and its effects on the relative growth of water hyacinths and salvinia
Cadmium absorption and accumulation and its effects on the relative growth of water hyacinth (Eichhornia crassipes (Mart.) Solms) and salvinia (Salvinia auriculata Aubl.) in nutrient solution were studied. (Abstract only)

Characterization of lipoxygenase pathway of soybean plants resistant and susceptible to Diaphorte phaseolorum f.sp. meridionalis, pathogen responsible for stem canker
Lipoxygenases are a class of enzymes that catalyze the addition of molecular oxygen to 1,4 - cis,cis - pentadiene motifs of unsaturated fatty acids to form hydroperoxide products. (Abstract only)

Content and distribution of heavy metals in roots, stems and leaves of tree seedlings in soil contaminated by zinc industry wastes
An experiment was carried out in greenhouse to evaluate total content and distribution of heavy metals in seedlings of twenty different tree species growing in a soil contaminated by Zn, Cd, Cu and Pb.

Physiological aspects of maize plants infected by mollicutes under different water levels in soil
Very few studies can be found concerning the mechanisms of pathogenicity and the effects of Mollicutes (spiroplasma and phytoplasma) on maize plants physiology. (Abstract only)

Nitrogen metabolism in alfalfa nodulated under phosphorus supression and resupply
Abstract : Pi suppression and resupply effects were studied on nitrogen metabolism by means studied of evaluating on nitrogen biological fixation (N2), GS, Fd-GOGAT and NADH-GOGAT activities in alfalfa cv.

Analysis of marker gene/ selective agent systems alternatives to positive selection of transgenic papaya (Carica papaya L.) Somatic embryos
Abstract : Questions relative to biosafety and public perception of genetically modified organisms have taken those involved on the development of transgenic plants to a phase out on the use of antibiotic resistance marker genes.

Relationship of reading of portable chlorophyll meter with contents of extractable chlorophyll and leaf nitrogen in maize
Abstract : The methods used to determine the amount of leaf chlorophyll require destruction of tissues samples and much work in the process of its attainment.

Differential gene expression in soybean during water deficit
Abstract : Tolerance to drought in plants is not a simple trait, but rather a complex of mechanisms working in combination to avoid or to tolerate water deficit.

Effect of leucaena aqueous extract on the development, mitotic index and peroxidase activity in maize seedlings
Abstract : Leucaena (Leucaena leucocephala (Lam.) de Wit) has been observed to control weeds when used as soil mulch.

Growth and mineral nutrition of Eucalyptus maculata and Eucalypts urophylla in nutrient solution with increasing concentration of copper
Abstract : The effects of increasing concentrations of Cu in nutrient solution on growth, content and translocation of heavy metals and mineral nutrients in eucalyptus were evaluated.

Effect of herbicides on the polymerization of the microtubule and induction of micronuclei in Helianthus maximiliani protoplasts
Abstract : In order to verify the kinetics of microtubule depolymerization and dynamics of micronuclei induction, two anti-mitotic herbicides, Amiprophos-methyl and Oryzalin, were added to dividing cells of Helianthus maximiliani.

Germination in developing seeds of Bixa orellana
Abstract : The objective of this work was to investigate the acquisition of germination capacity and the onset of dormancy in developing seeds of Bixa orellana L. (annatto).

Agrobacterium tumefaciens-mediated transformation of tomato processing cultivars
Abstract : The objective of this study was to adapt an A. tumefaciens-mediated genetic transformation system to the processing of the Brazilian tomato cultivars IPA-5 and IPA-6.

Sap flow and stomatal conductance of two evergreen woody species in an open savanna and a savanna woodland
Abstract : The climate in the central Brazilians savannas ("cerrados") is characterized by well-defined dry (May to September) and wet (October to April) seasons.