Cysteine protease gene expression and proteolytic activity during senescence of Alstroemeria petals

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Cysteine protease gene expression and proteolytic activity during senescence of Alstroemeria petals.

The functional life of the flower is terminated by senescence and/or abscission. Multiple processes contribute to produce the visible signs of petal wilting and inrolling that typify senescence, but one of the most important is that of protein degradation and remobilization. This is mediated in many species through protein ubiquitination and the action of specific protease enzymes. This paper r...

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Senescence is a tightly regulated process and both compartmentalisation and regulated activation of degradative enzymes is critical to avoiding premature cellular destruction. Proteolysis is a key process in senescent tissues, linked to disassembly of cellular contents and nutrient remobilisation. Cysteine proteases are responsible for most proteolytic activity in senescent petals, encoded by a...

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ژورنال

عنوان ژورنال: Journal of Experimental Botany

سال: 2002

ISSN: 1460-2431,0022-0957

DOI: 10.1093/jexbot/53.367.233