Observatorio de I+D+i UPM

Memorias de investigación
Capítulo de libro:
Flooding stress and O2 -shortage in plants
Año:2016
Áreas de investigación
  • Ciencias naturales y ciencias de la salud
Datos
Descripción
Flooding and submergence are two stresses leading to anoxic conditions in the root system. Under this stress both anoxia and hypoxia are defined by O2 shortage. Flooding negatively prevents O2 influx into the root system, thus reducing oxidative phosphorylation and ATP levels. Flood tolerant higher plant species have adequate plasticity to adjust their anatomy and physiology and allow their growth in aquatic environments, representing an evolutionary challenge. Aerenchyma and adventitious root formation, and elongation of submerged internodes are two acquired mechanisms to avoid and escape the flooding stress. It now seems clear the existence of a conserved flooding response network (FRN) that includes alterations in ethylene (ET)-triggered gene expression. Besides, gibberellins (GAs) are essential components for the effectiveness of this signalling network that is started by entrapped and/or enhanced ET synthesis. On the other hand, for the FRN to take place properly there must be at least two parallel and coupled additional mechanisms to sensitize O2 (i.e. N-end rule pathway and/or NO/nsHbs cycle) and generate ATP and NAD+ from the fermentation pathway. Here, FRN knowledge is updated and revised in depth.
Internacional
Si
DOI
10.1002/9781119054450.ch41
Edición del Libro
Editorial del Libro
John Wiley & Sons, Ltd.
ISBN
9781119054368
Serie
Título del Libro
Water Stress and Crop Plants: A Sustainable Approach
Desde página
711
Hasta página
731
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Raquel Iglesias Fernandez (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Centro o Instituto I+D+i: Centro de Biotecnología y Genómica de Plantas, CBGP
  • Departamento: Biotecnología - Biología Vegetal
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