A patatin-like protein with galactolipase activity is induced by drought stress in Vigna unguiculata leaves |
| |
Authors: | Matos A R d'Arcy-Lameta A França M Zuily-Fodil Y Pham-Thi A T |
| |
Institution: | Laboratoire de Biochimie et Physiologie de l'Adaptation Végétale, Université Paris 7 Denis Diderot, case 7019, 2 Place Jussieu, 75251 Paris Cedex 05, France. matos@jussieu.fr |
| |
Abstract: | This paper reports the cloning of a cDNA (Vupat1) expressed in Vigna unguiculata leaves coding for a protein with 48% sequence homology to patatin, the major protein from potato tuber which has lipolytic acylhydrolase activity. Two cultivars differing in drought tolerance were examined in Northern-blot analyses. Expression of Vupat1 is stimulated by drought stress, especially in the drought-sensitive cultivar. Vupat1 was expressed in the baculovirus system as a fusion protein secreted in the culture medium. The recombinant protein displays lipolytic activity towards monogalactosyldiacylglycerol, digalactosyldiacylglycerol and sulphoquinovosyldiacylglycerols. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|