Softening-up mannan-rich cell walls

Rodriguez Gacio, Maria del Carmen; Iglesias Fernandez, Raquel; Carbonero Zalduegui, Pilar y Matilla, Angel J. (2012). Softening-up mannan-rich cell walls. "Journal of Experimental Botany", v. 63 (n. 11); pp. 3975-3988. ISSN 0022-0957. https://doi.org/10.1093/jxb/ers096.

Descripción

Título: Softening-up mannan-rich cell walls
Autor/es:
  • Rodriguez Gacio, Maria del Carmen
  • Iglesias Fernandez, Raquel
  • Carbonero Zalduegui, Pilar
  • Matilla, Angel J.
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of Experimental Botany
Fecha: 2 Mayo 2012
Volumen: 63
Materias:
Escuela: Centro de Investigación en Biotecnología y Genómica de Plantas (CBGP) (UPM)
Departamento: Otro
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

Texto completo

[img]
Vista Previa
PDF (Document Portable Format) - Se necesita un visor de ficheros PDF, como GSview, Xpdf o Adobe Acrobat Reader
Descargar (2MB) | Vista Previa

Resumen

The softening and degradation of the cell wall (CW), often mannan enriched, is involved in several processes during development of higher plants, such as meristematic growth, fruit ripening, programmed cell death, and endosperm rupture upon germination. Mannans are also the predominant hemicellulosic CW polymers in many genera of green algae. The endosperm CWs of dry seeds often contain mannan polymers, sometimes in the form of galactomannans (Gal-mannans). The endo-beta-mannanases (MANs) that catalyse the random hydrolysis of the beta-linkage in the mannan backbone are one of the main hydrolytic enzymes involved in the loosening and remodelling of CWs. In germinating seeds, the softening of the endosperm seed CWs facilitates the emergence of the elongating radicle. Hydrolysis and mobilization of endosperm Gal-mannans by MANs also provides a source of nutrients for early seedling growth, since Gal-mannan, besides its structural role, serves as a storage polysaccharide. Therefore, the role of mannans and of their hydrolytic enzymes is decisive in the life cycle of seeds. This review updates and discusses the significance of mannans and MANs in seeds and explores the increasing biotechnological potential of MAN enzymes.

Más información

ID de Registro: 16515
Identificador DC: http://oa.upm.es/16515/
Identificador OAI: oai:oa.upm.es:16515
Identificador DOI: 10.1093/jxb/ers096
URL Oficial: http://jxb.oxfordjournals.org/content/63/11/3976.full.pdf+html
Depositado por: Memoria Investigacion
Depositado el: 17 Sep 2013 15:02
Ultima Modificación: 10 Nov 2017 09:33
  • Open Access
  • Open Access
  • Sherpa-Romeo
    Compruebe si la revista anglosajona en la que ha publicado un artículo permite también su publicación en abierto.
  • Dulcinea
    Compruebe si la revista española en la que ha publicado un artículo permite también su publicación en abierto.
  • Recolecta
  • e-ciencia
  • Observatorio I+D+i UPM
  • OpenCourseWare UPM