A5010657857- Plant tissue culture and regeneration
- Seed Germination and Physiology
- Growth and nutrition in plants
- Polyamine Metabolism and Applications
- Plant Molecular Biology Research
- Plant Stress Responses and Tolerance
- Plant nutrient uptake and metabolism
- Legume Nitrogen Fixing Symbiosis
- Plant Genetic and Mutation Studies
- Sugarcane Cultivation and Processing
- Plant Reproductive Biology
- Photosynthetic Processes and Mechanisms
- Biofuel production and bioconversion
- Transgenic Plants and Applications
- Soybean genetics and cultivation
- Light effects on plants
- Plant Growth Enhancement Techniques
- Plant Parasitism and Resistance
- Plant biochemistry and biosynthesis
- Plant Taxonomy and Phylogenetics
- Chromosomal and Genetic Variations
- Postharvest Quality and Shelf Life Management
- Plant-Microbe Interactions and Immunity
- Animal Genetics and Reproduction
- Traditional and Medicinal Uses of Annonaceae
State University of Norte Fluminense
2016-2025
Prefeitura Municipal de Campos dos Goytacazes
2014-2022
Universidade Federal do Rio de Janeiro
2018-2020
Universidade de São Paulo
2004-2010
Universidade Brasil
2009
Instituto de Geociencias
2007
Universidade Federal de Santa Catarina
2001-2004
In this study, we examined the regulation by putrescine, spermidine and spermine of nitric oxide (NO) biosynthesis in Arabidopsis thaliana seedlings. Using a fluorimetric method employing cell-impermeable NO-binding dye diaminorhodamine-4M (DAR-4M), observed that polyamines (PAs) greatly increased NO release seedlings, whereas arginine putrescine had little or no effect. Spermine, most active PA, stimulated with apparent lag phase. The response was quenched addition...
Humic acids (HAs) have positive effects on plant physiology, but the molecular mechanisms underlying these events are only partially understood. The induction of root growth and emission lateral roots (LRs) promoted by exogenous auxin is a natural phenomenon. Exogenous auxins also associated with HA. Gas nitric oxide (NO) secondary messenger produced endogenously in plants. It metabolic dependent auxin. With application auxin, NO production significantly increased, resulting physiology. Thus...
The use of dark septate fungi (DSE) to promote plant growth can be beneficial agriculture, and these organisms are important allies in the search for sustainable agriculture practices. This study investigates contribution absorption nutrients by rice plants their ensuing growth. Four isolates that were identified Internal transcribed spacer phylogeny inoculated seeds (Cv. Piauí). resulting root colonization was estimated kinetic parameters V max K m calculated from nitrate contents nutrient...
Abstract Key message The activation of the antioxidant system under stress combination is a transmissible trait from rootstock to scion. Therefore, selection key improve crop performance and sustainable production changing climate conditions. Climate change altering weather conditions such as mean temperatures precipitation patterns. Rising temperatures, especially in certain regions, accelerates soil water depletion increases drought risk, which affects agriculture yield. Previously, our...
Somatic embryogenesis is a complex process regulated by numerous factors. The identification of proteins that are differentially expressed during plant development could result in the molecular markers metabolism and provide information contributing to monitoring understanding different biological responses. In addition, lead optimization protocols allowing use biotechnology for papaya propagation reproduction. This work aimed investigate effects polyethylene glycol (PEG) on somatic embryo...
Plant growth regulators play an important role in seed germination. However, much of the current knowledge about their function during germination was obtained using orthodox seeds as model systems, and there is a paucity information plant recalcitrant seeds. In present work, two endangered woody species with seeds, Araucaria angustifolia (Gymnosperm) Ocotea odorifera (Angiosperm), native to Atlantic Rain Forest, Brazil, were used study mobilization polyamines (PAs), indole-acetic acid (IAA)...
The development of somatic cells in to embryogenic occurs several stages and ends embryo formation, though most these biochemical molecular changes have yet be elucidated. Somatic embryogenesis coupled with genetic transformation could a biotechnological tool improve potential crop yields sugarcane cultivars. objective this study was observe identify differentially expressed proteins (E) non-embryogenic (NE) callus during maturation treatment. E NE were cultured on culture medium...
Salt stress is one of the most common stresses in agricultural regions worldwide. In particular, sugarcane affected by salt conditions, and no cultivar presently show high productivity accompanied a tolerance to stress. Proteomic analysis allows elucidation important pathways involved responses various abiotic at biochemical molecular levels. Thus, this study aimed analyse proteomic effects micropropagated shoots two cultivars (CB38-22 RB855536) using label-free approach. The mass...
Abstract Aims: Effects of salt stress on the physiology Salvinia auriculata were investigated. Method Plants supplemented with 0, 50, 100 and 150 mmol L-1 NaCl incubated for 5 days. NO content was evaluated after 2 hours Photosynthetic pigments, proline nutrients analyzed Major Results Higher chlorophyll a observed in plants treated 50 L-1, decreasing higher concentrations, while chorophyll b decreased increasing concentrations. Exposure to increased biomass, concentrations caused loss...
Araucaria angustifolia is an endangered Brazilian native conifer tree. The aim of the present work was to identify differentially expressed proteins between mature and germinated embryos A. angustifolia, using one two dimensional gel electrophoresis approaches followed by protein identification tandem mass spectrometry. identities 32 spots from maps were successfully determined, including enzymes involved in storage mobilization such as vicilin-like proteases. A label free approach, based on...
Polyamines ( PAs ) are abundant polycationic compounds involved in many physiological processes plants, including somatic embryogenesis. This study investigates the role of on cellular growth and structure pro‐embryogenic masses PEMs ), endogenous PA proton pump activities embryogenic suspension cultures Araucaria angustifolia . The were incubated with putrescine (Put), spermidine (Spd), spermine (Spm) inhibitor methylglyoxal‐bis(guanylhydrazone) MGBG respectively (1 m M ). After 24 h 21...