SciELO - Scientific Electronic Library Online

 
vol.36 número1Fertilización fosfatada para plantas jóvenes de vid Chardonnay y Pinot Noir en suelo arenosoNiveles de boro en las aguas del Río Calchaquí y sus afluentes. Salta, Argentina índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google

Compartir


Idesia (Arica)

versión On-line ISSN 0718-3429

Resumen

HUANCA MAMANI, Wilson et al. Expression analysis of three stress-related genes in response to excess of boron in Solanum lycopersicum cv Poncho Negro. Idesia [online]. 2018, vol.36, n.1, pp.35-40. ISSN 0718-3429.  http://dx.doi.org/10.4067/S0718-34292018000100035.

Boron (B) is an essential micronutrient for higher plants, but is very toxic at higher concentrations. This study evaluated the tran-scriptional activity of three stress-related genes under conditions of excess B in Solanum lycopersicum cv Poncho Negro, a cultivar originating from the Lluta Valley (Arica, Chile), where it grows in environments with very high concentrations of B. Poncho Negro tomato seedlings were grown under hydroponic conditions and stressed with B (20 ppm); root and leaf samples were collected at 3 and 96 h after stress. The activity of three stress-related genes, Hsp90, MT and GR, was analyzed by quantitative reverse transcrip-tion PCR. A marked differential molecular response was observed between leaves and roots. The three genes were overexpressed in leaves in response to B, while in roots Hsp90 decreased, MT increased and GR1 did not change its activity. Activation of these genes may indicate participation of genes involved in stress oxidative processes as an early response to B stress and may represent a complementary mechanism to boron transport.

Palabras clave : Boron tolerance; gene expression; Poncho Negro tomato.

        · resumen en Español     · texto en Español     · Español ( pdf )