The fungus Macrophomina phaseolina is a phytopathogen of great importance attacking various crops and causing severe losses especially in sorghum, beans, soybeans others. Since acetic indole acid (AIA) hormone that some authors associate with the pathogenic power other fungi such as Fusarium oxysporum, it was decided to perform this work detect whether M isolated from beans layers producing AIA...

The isolation and annotation of an 8994-bp DNA fragment from Pseudomonas putida 1290, which conferred upon P. putida KT2440 the ability to utilize the plant hormone indole 3-acetic acid (IAA) as a sole source of carbon and energy, is described. This iac locus (for indole 3-acetic acid catabolism) was identified through analysis of a plasposon mutant of P. putida 1290 that was no longer able to ...

The Present study summarizes the biosynthesis, characterization and optimization of auxins by Piriformospora indica and its effect on the growth of Solanum melongena L. cultivars. The biosynthesis of auxins was greatly influenced by the addition of tryptophan. Based on the data obtained from traditional one factor at a time method, optimization was carried out using the response surface methodo...

A protocol for micropropagation of Boswellia ovalifoliolata Bal & Henry (Burseraceae) was developed using cotyledonary nodal explant on Murashige and Skoog modified medium (MS). A comparative study of micropropagation with 6-benzyladenine, kinetin and thidiazuron along with 1-naphthalene acetic acid (0.054 microM) was conducted. The highest shoot multiplication (7.1 +/- 0.2 shoots per node) was...

Effects of indole acetic acid (IAA), indole butyric acid (IBA) and naphthalene acetic acid (NAA) were investigated on some physiological parameters in detached leaves of Tropaeolum majus L., during dark-induced senescence. Auxin accelerated the loss of chlorophyll (Chl) and carotenoid content whereas it retarded the loss of protein amount at the end of senescing period in leaves significantly. ...

BACKGROUND Chlorophytum borivilianum is an industrially valued medicinal crop. Propagation through seeds is not feasible because of low germination percentage and long dormancy period. Therefore, callus culture and plant regeneration can be an alternative to improve this crop production. Also, callus can serve as an alternative source of bioactive compounds. OBJECTIVE To evaluate the effect o...

Abstract Plant endophytic microorganisms, which can enhance plant growth and resistance to biotic abiotic stresses, are untapped resources with large potential applications for crop production. However, the community is influenced by multiple factors, such as host genetics, environment, other microbes. Thus, it important characterize well-adapted endophytes from native crops. We isolated 43 bac...

The influence of growth regulators on the root induction of the Musa genus plants cultivated within in vitro conditions has been compared. The plant material used was the ‘Cavendish’ cultivar. Different concentratios of growth regulators (naphthaleneacetic acid, indole-3-acetic acid, 6-benzylaminopurine, 2.,4-dichlorophenoxyacetic acid) has been used and as control ones MS and half concentrated...

Release of divalent ions from membrane pellets of soybean hypocotyls was promoted by the natural auxin, indole-3-acetic acid, and the synthetic auxin, 2,4-dichlorophenoxyacetic acid. The calcium release occurred at auxin concentrations as low as 1 nanomolar, and maximum release was observed at 1 micromolar. Hormone concentrations greater than 1 micromolar showed reduced effectiveness in releasi...

Six fungal isolates were selected from the rhizosphere of black pepper (Piper nigrum L.) plants and were tested in vitro for their plant growth promoting (PGP) abilities in the soil. The species of Aspergillus selected were tested for the siderophore production, indole acetic acid (IAA) production, catalase enzyme activity and biological control of pathogens through antagonism. The results indi...