INVESTIGADORES
MARTINEZ Dana Ethel
artículos
Título:
Senescence related changes in the leaf apoplast
Autor/es:
MARTINEZ DANA; GUIAMÉT JUAN J
Revista:
JOURNAL OF PLANT GROWTH REGULATION
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2013 p. 1 - 12
ISSN:
0721-7595
Resumen:
The extracellular space of leaves is a highly
dynamic compartment harboring a number of activities
involved in signal recognition, import/export of organic
and inorganic compounds, and defense against pathogens.
Although this has not been extensively studied, there is
evidence for the involvement of the extracellular space in
signal perception and nutrient remobilization during
senescence. Integration of the apoplast into the larger
picture of cellular activities during senescence may help
understand key events in the terminal phase of leaf
development. Important events associated with senescence
occur in the apoplast, and these events may offer targets for
genetic manipulation to modulate senescence. In this paper
we look into changes in the extracellular space of leaves
accompanying senescence, with a special focus on apoplastic
proteins and plasma membrane proteins related to
signaling and export of amino acids. Other not less relevant
senescence-related metabolic changes such as NH4 accumulation
and the oxidative burst are beyond the scope of
this review.