One of the water stress-specific cDNA clones of rice characterised previously, wsi18, was selected for further study. The wsi18 gene can be induced by water stress conditions such as mannitol, NaCl, and dryness, but not by ABA, cold, or heat. A genomic clone for wsi18, pwsi18, contained about 1.7 kbp of the 5' upstream sequence, two introns, and the full coding sequence. The 5'-upstream sequenc...

Introducción. La transformación del arroz (Oryza sativa L. ssp indica) mediada por Agrobacterium, representa una oportunidad para la investigación científica y el mejoramiento genético. Es necesaria optimización protocolo obtener mayor eficiencia de transformación. Objetivo. Evaluar diferentes factores que afectan genética en callos embriogénicos subespecie indica vía Agrobacterium tumefaciens....

The production of the type I antimicrobial peptide (AMP) subtilin by Bacillus subtilis is regulated in a cell-density-dependent manner [Kleerebezem M, de Vos WM, Kuipers OP. The lantibiotics nisin and subtilin act as extracellular regulators of their own biosynthesis. In: Dunny GM, Winans SC, editors. Cell-cell signaling in bacteria. Washington, D.C., USA: ASM Press; 1999. p. 159-74; Stein T, B...

In acid soils, Rhizobium favelukesii strains, known as Oregon-like are a potential risk for alfalfa production given their parasitic behaviour. this study, we isolated five strains (ORY1 to ORY5) from nodules grown in Uruguayan with 99.7% and 100% 16S rRNA gene sequence identity R. type strain of LUP83. The BOX profiles the isolates showed two different patterns, suggesting some diversity among...

A critical step in the development of Agrobacterium tumefaciens-mediated transformation in orchid genus is the establishment of optimal conditions for T-DNA gene delivery into protocorm-like bodies from which the whole plantlets can be regenerated. As a first step in the development of a successful Agrobacterium tumefaciens-mediated transformation for Dendrobium savin white, factors influencing...

RESUMO Este trabalho apresenta informações de documentos inéditos 1840, com as descrições da fabricação três canhões, um fato técnico a ser rememorado, pelo ineditismo, pelos desafios técnicos que superou e registros descritivos na Fábrica Ferro Ipanema, realizados major João Bloem, o então diretor, das agruras resultantes Revolta Liberal. Nesse momento, expansão indústria paulista do açúcar co...