Abstract:Plants can respond to traumatism by synthesis and secretion of defence molecules. Wound-healing and desiccation stress of pieces of potato tuber parenchyma (Solanum tuberosum) promoted the secretion of a patatin-like phospholipase A 2 , PLA 2 (EC.3.1.1.4.) that displayed cytotoxic activity against tumour cells. The potato secretion product, an oligomeric form of patatin-like protein, was shown to contain several isoforms of PLA 2 polypeptides and to be associated with other proteins, including Kunitz-type prot… Show more
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