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פותח על ידי קלירמאש פתרונות בע"מ -
Early events during quiescent infection development by Colletotrichum gloeosporioides in unripe avocado fruits
Year:
2000
Source of publication :
Phytopathology
Authors :
בנו-מועלם, דלילה
;
.
פרוסקי, דב
;
.
Volume :
90
Co-Authors:
Beno-Moualem, D., Dept. Postharvest Sci. Fresh Produce, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Prusky, D., Dept. Postharvest Sci. Fresh Produce, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Facilitators :
From page:
553
To page:
559
(
Total pages:
7
)
Abstract:
Inoculation of avocado pericarp tissue with Colletotrichum gloeosporioides and treatment of avocado cell cultures with the cell wall elicitor of C. gloeosporioides both increased the production of reactive oxygen species (ROS). However, whereas the production of ROS could be detected within minutes in avocado cell suspensions, it was detected only after 2 h following inoculation of pericarp tissue. Protein kinase inhibitors such as K-252a and staurosporine and the phosphatase inhibitor microcystin-LR inhibited the release of H2O2 from avocado cell suspensions. When 1 mM H2O2 was exogenously applied to pericarp tissue, it enhanced ROS, phenylalanine ammonia lyase (PAL) activity, and epicatechin levels. But, when H2O2 treatment was applied following staurosporine treatment, PAL activity was no longer induced. The uninduced ROS production in pericarp tissue of freshly harvested, unripe, resistant fruit was twice as high as in ripe, susceptible fruit. Challenge inoculation of resistant fruit further increased the ROS level; however, this increase did not occur in susceptible fruits. The current findings are consistent with the hypothesis that production of ROS is induced by fungal infection of unripe fruits and, consequently, may modulate resistance, resulting in the inhibition of fungal development and quiescence.
Note:
Related Files :
Avocado
disease resistance
enzyme activity
enzyme inhibitor
Fungal infection
Growth inhibition
phenylalanine ammonia lyase
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
23420
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:59
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Scientific Publication
Early events during quiescent infection development by Colletotrichum gloeosporioides in unripe avocado fruits
90
Beno-Moualem, D., Dept. Postharvest Sci. Fresh Produce, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Prusky, D., Dept. Postharvest Sci. Fresh Produce, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Early events during quiescent infection development by Colletotrichum gloeosporioides in unripe avocado fruits
Inoculation of avocado pericarp tissue with Colletotrichum gloeosporioides and treatment of avocado cell cultures with the cell wall elicitor of C. gloeosporioides both increased the production of reactive oxygen species (ROS). However, whereas the production of ROS could be detected within minutes in avocado cell suspensions, it was detected only after 2 h following inoculation of pericarp tissue. Protein kinase inhibitors such as K-252a and staurosporine and the phosphatase inhibitor microcystin-LR inhibited the release of H2O2 from avocado cell suspensions. When 1 mM H2O2 was exogenously applied to pericarp tissue, it enhanced ROS, phenylalanine ammonia lyase (PAL) activity, and epicatechin levels. But, when H2O2 treatment was applied following staurosporine treatment, PAL activity was no longer induced. The uninduced ROS production in pericarp tissue of freshly harvested, unripe, resistant fruit was twice as high as in ripe, susceptible fruit. Challenge inoculation of resistant fruit further increased the ROS level; however, this increase did not occur in susceptible fruits. The current findings are consistent with the hypothesis that production of ROS is induced by fungal infection of unripe fruits and, consequently, may modulate resistance, resulting in the inhibition of fungal development and quiescence.
Scientific Publication
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