Premium
Kohlenhydratniveau und saure Invertaseaktivität in mit Pyricularia oryzae infizierten Reisblättern
Author(s) -
Hwang Byung Kook,
Kim Ki Deok,
Kim Young Bae
Publication year - 1989
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.1439-0434.1989.tb00647.x
Subject(s) - pyricularia , invertase , mannitol , sucrose , fructose , trehalose , biology , arabitol , cultivar , inoculation , sugar , fungus , starch , carbohydrate , botany , horticulture , food science , biochemistry , fermentation , xylitol
Ethanol‐soluble carbohydrates in healthy and blast‐infected leaves and also cultures of Pyricularia oryzae were analyzed using gas chromatography. Arabitol, mannitol, and trehalose occurred in infected leaf tissue, but not in healthy controls. Cultures of P. oryzae contained mannitol and trehalose, but not arabitol and sucrose. The presence of arabitol only in blast‐infected rice leaves suggests that arabitol synthesis may be induced in infected leaf tissue as a result of the rice‐blast fungus interaction, but may not be within blast fungus itself. The amounts of glucose, fructose, and sucrose in infected leaves were slightly increased until 5 days, and greatly enhanced at 7 days after inoculation, There were no differences in amounts of these sugars between the cultivars Nakdong and Dobong. At 7 days after inoculation, increases in amounts of arabitol, mannitol, and trehalose were pronounced in the susceptible cultivar Nakdong than in the moderately susceptible cultivar Dobong. The increased amounts of glucose and fructose in infected plants of the two cultivars were closely correlated with the presence of a very active invertase.