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Endo‐ and Exochitinase Activity in Kiwifruit Infected with Botrytis cinerea
Author(s) -
Wurms K.,
Long P.,
Greenwood D.,
Sharrock K.,
Ganesh S.
Publication year - 1997
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1997.tb00377.x
Subject(s) - actinidia deliciosa , botrytis cinerea , biology , botany , botrytis , actinidia , horticulture
Endo‐ and exochitinase activities were determined in autoclaved leaves, live leaves, and fruit of kiwifruit ( Actinidia deliciosa var. deliciosa cv. Hayward [A. Chev.]Liang and Ferguson) following infection with Botrytis cinerea (Pers.). Appreciable endochitinase activity was found in healthy and diseased leaves and fruit at harvest and after cool‐storage, but was absent in plant tissue killed by autoclaving. Later harvested fruit produced more endochitinase activity in storage than did early harvested fruit. Exochitinase activity was only associated with diseased tissue, and was present in diseased autoclaved leaves. The results suggest that endochitinase activity originates from the plant whilst exochitinase is associated with the pathogen. The significance of these findings is discussed.