The Impact of Rhizospheric and Endophytic Bacteria on the Germination of : A Threatened Rubiaceae of the Amazon Cangas.

(Rubiaceae) is a narrow endemic species from the canga ecosystems of the Carajás National Forest that is facing extinction due to a limited range and habitat disturbance from hydroclimatological changes and mining activities. This study examines the influence of rhizospheric and endophytic bacteria on seed germination to support conservation efforts. Soil samples, both rhizospheric and non-rhizospheric, as well as plant root tissues, were collected.

Cost Reduction in the Production of Green Dwarf Coconut Palm Seedlings Biostimulated with .

Unlabelled: The production of coconut tree seedlings is an important step in the production process, as it substantially affects the productive performance of the adult plant, and the way of obtaining seedlings directly reflects the added costs. To minimize costs, the introduction of biostimulants can be considered a viable and sustainable technology. This study aimed to evaluate the effects of applying in promoting growth and reducing the costs of producing Brazilgreen dwarf coconut seedlings.

Enhancing iron biogeochemical cycling for ecosystem restoration: insights from microbial stimuli.

Introduction: The microbial-induced restoration of ferruginous crusts (), which partially cover iron deposits and host unique ecosystems, is a promising alternative for reducing the environmental impacts of the iron mining industry.

Methods: To investigate the potential of microbial action to accelerate the reduction and oxidation of iron in substrates rich in hematite and goethite, four different microbial treatments (water only as a control - W; culture medium only - MO; medium + microbial consortium - MI; medium + microbial consortium + soluble iron - MIC) were periodically applied to induce iron dissolution and subsequent precipitation. Except for W, all the treatments resulted in the formation of biocemented blocks.

Acquiring Iron-Reducing Enrichment Cultures: Environments, Methods and Quality Assessments.

Lateritic duricrusts cover iron ore deposits and form spatially restricted, unique ecosystems endangered by mining. Iron cycling, i.e.

Improves Performance of Brazilian Green Dwarf Coconut Palms Seedlings With Reduced Chemical Fertilization.

Coconut production in the Amazon requires the knowledge and development of sustainable technologies to alleviate the detrimental effects of inorganic chemical fertilizers and intensive farming practices. In this study, we investigated the effects of plant growth-promoting rhizobacteria (PGPR) isolated from coconut seedlings on nutrient use efficiency (NUE) and physiological mechanisms related to biomass accumulation of seedlings grown with reduced inorganic fertilizer levels. Of the 96 PGPR isolates tested on rice plants, the isolate (UFRABC40) was selected, as it resulted in the most significant gain in growth variables.