Aspectos generales de las tioredoxinas en plantas

Chloroplast is the organelle for photosynthesis in eukaryotic cells. In it the presence of a light-dependent ferredoxin/thioredoxin system (FTS) and a NADPH-dependent thioredoxin reductase C (NTRC), have been implicated in plant defense response and at the same time constitute important redox mechanism to provide reducing power to thioredoxins. This organelle also has a critical role in plant innate immunity against pathogen infection, where thioredoxins are the major responsible of to maintain proteins in their reduced state. The present work present a review of the scientific literature about some important aspects of plant thioredoxins. Keywords: chloroplast, innate immunity, photosynthesis, redox control, stressEl cloroplasto es el organelo para la fotosíntesis en células eucariotas. En él la presencia del sistema luz-dependiente ferredoxina/tioredoxina (FTS) y de una tioredoxina reductasa C NADPH-dependiente (NTRC), han estado implicados en la respuesta de defensa y al mismo tiempo constituyen importantes mecanismos redox que proveen poder reductor a las tioredoxinas. Este organelo también tiene un papel crítico en la inmunidad innata de las plantas contra la infección de patógenos, donde las tioredoxinas son las principales responsables de mantener las proteínas en su estado reducido. En el presente trabajo se presenta una revisión de la literatura científica acerca de aspectos importantes de las tioredoxinas de plantas.          Palabras clave: cloroplasto, control redox, estrés, fotosíntesis, inmunidad innat

Advance in the studies about <i>Musa</i> spp.-<i>Mycosphaerella fijiensis</i> Morelet interaction

Black leaf streak disease caused by Mycosphaerella fijiensis Morelet [anamorfo: Pseudocercospora fijiensis (Morelet) Deighton], is considered the most destructive and costly foliar disease of bananas and plantain around the world. Taking into account the chemical compounds injure, the increase of fungi resistance to some fungicides besides of, the genetic complexity of Musa spp. resistance to M. fijiensis and the troubles which are present with the genetic improvement of cultivars due to sterility and triploidi, it is necessary to find sustainable alternatives for the management of the disease. To reach this goal the pathogen knowledge and the physiological, genetic and mainly the molecular bases which govern plants interactions to find candidate gene related with the resistance, for the utilization in genetic engineering could be a promissory choice. In this complex scenario biochemical and histological analysis together with the use of different molecular techniques, result of a great contribution to the knowledge of Musa spp.-M. fijiensis pathosystem. At the present work is showed a review of the scientific literature plant-pathogen interaction.   Key words: Biochemical analysis, Molecular techniques, Musa spp., Mycosphaerella fijiensis, Plant-pathogen interactio