RT Journal Article
T1 Plant senescence and proteolysis: two processes with one destiny
A1 Díaz Mendoza, María Mercedes
A1 Velasco-Arroyo, Blanca
A1 Santamaria, Estrella
A1 González-Melendi, Pablo
A1 Martinez, Manuel
A1 Diaz, Isabel
AB Senescence-associated proteolysis in plants is a complex and controlled process, essential for mobilization of nutrients from old or stressed tissues, mainly leaves, to growing or sink organs. Protein breakdown in senescing leaves involves many plastidial and nuclear proteases, regulators, different subcellular locations and dynamic protein traffic to ensure the complete transformation of proteins of high molecular weight into transportable and useful hydrolysed products. Protease activities are strictly regulated by specific inhibitors and through the activation of zymogens to develop their proteolytic activity at the right place and at the proper time. All these events associated with senescence have deep effects on the relocation of nutrients and as a consequence, on grain quality and crop yield. Thus, it can be considered that nutrient recycling is the common destiny of two processes, plant senescence and, proteolysis. This review article covers the most recent findings about leaf senescence features mediated by abiotic and biotic stresses as well as the participants and steps required in this physiological process, paying special attention to C1A cysteine proteases, their specific inhibitors, known as cystatins, and their potential targets, particularly the chloroplastic proteins as source for nitrogen recycling.
PB Sociedade Brasileira de Genética
SN 1415-4757
YR 2016
FD 2016
LK https://hdl.handle.net/20.500.14352/93060
UL https://hdl.handle.net/20.500.14352/93060
LA eng
NO Diaz-Mendoza, Mercedes, et al. «Plant senescence and proteolysis: two processes with one destiny». Genetics and Molecular Biology, vol. 39, n.o 3, agosto de 2016, pp. 329-38. https://doi.org/10.1590/1678-4685-GMB-2016-0015.
NO Ministerio de Economía y Competitividad  (España)
DS Docta Complutense
RD 10 abr 2025