Seed inoculation with plant growth promoting rhizobacteria (PGPR) is an ideal tool to supply the soil with a high density of beneficial microorganisms. However, maintaining viable microorganisms is a major problem during seed treatment and storage. In this work, an evaluation was made of the effect of bacterial immobilization in nanofibers on the stability (viability and maintenance of benefici...

Kebun Raya Liwa’s soil has the potential to allow for a population of microorganisms such as Bacillus sp. Liwa are known produce phytohormones that have help plant growth and development, one which is hormone Indole Acetic Acid (IAA). This study aims determine from Rawa in producing IAA hormones. The research method included taking samples, preparing Nutrient Agar (NA) medium, measuring pH isol...

Plants are constantly exposed to both biotic and abiotic stresses which limit their growth development reduce productivity. In order tolerate them, plants initiate a multitude of stress-specific responses modulate different physiological, molecular cellular mechanisms. However, many times the natural methods employed by for overcoming not sufficient require external assistance from rhizosphere....

In recent years, the low Zn content of wheat has become critical. Consequently, solutions that can improve nutrition are highly researched. present investigation, we aimed to evaluate potential benefits phosphate-solubilizing bacteria isolated from Ziziphus lotus on seedling growth. Based criteria, four strains, J16, J143, J146, and J158, were identified by 16SrRNA gene sequencing as Pseudomona...

Medicinal plants may become a favourable habitat for associative microorganisms, especially endophytic microbes inhabiting Zingiberaceaen species. Preliminary investigation has revealed an assemblage of fungi colonizing the healthy rhizome Elettaria sp. collected from Sibayak Forest, North Sumatra based on molecular evidences. This study investigated IAA-producing and antifungal activity Elleta...

A subset of children develops persistent insulin autoantibodies (IAA; almost always as the only islet autoantibody) without evidence of progression to diabetes. The aim of the current study was the development and characterization of the performance of a nonradioactive fluid phase IAA assay in relation to standard IAA radioassay. We developed a nonradioactive IAA assay where bivalent IAA cross-...

Evidence that indoleacetic acid (IAA) conjugates are metabolized via enzyme-catalyzed hydrolysis to free IAA and that their biological activities are related to the rates at which they are hydrolyzed by the tissue is presented. These conclusions are based on the following observations. Slow but continuous decarboxylation of the IAA moiety of IAA-l-alanine and IAA-glycine occurs when these conju...

Rice blast caused by Pyricularia oryzae, which is a major threat to food security worldwide, markedly decreases the yield of rice. Some rhizobacteria called 'plant growth-promoting rhizobacteria' inhibit plant pathogens and improve growth secreting iron-chelating siderophores. The decreased availability iron adversely affects survival pathogens, especially fungal in rhizosphere. This study aime...

Inoculation of forest seedlings with mycorrhizal fungi and rhizobacteria can improve the morphological and physiological qualities of plants, especially those used for regeneration of arid areas. In this paper, under standard nursery conditions, Aleppo pine seedlings were inoculated with Pseudomonas fluorescens CECT 5281 rhizobacteria. Some of these seedlings were also inoculated with the ectom...

The physiological activity of exogenous 4-Cl-IAA, as compared to IAA, was examined in maize coleoptile segments. It was found that in this model system 4-Cl-IAA is much more active in the stimulation of elongation than IAA. Simultaneous measurements of growth and external pH indicated that administration of either IAA or 4-Cl-IAA resulted in medium acidification. The kinetics of the pH changes,...