נגישות
menu      
חיפוש מתקדם
תחביר
חפש...
הספר "אוצר וולקני"
אודות
תנאי שימוש
ניהול
קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Trehalase, invertase, and amylase activities in the black scale, Saissetia oleae, and their relation to host adaptability
Year:
1976
Source of publication :
Journal of Insect Physiology
Authors :
ישעיה, יצחק
;
.
סבירסקי, אליהו
;
.
Volume :
22
Co-Authors:
Ishaaya, I., Division of Entomology, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Swirski, E., Division of Entomology, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Facilitators :
From page:
1025
To page:
1029
(
Total pages:
5
)
Abstract:
In young females of the black scale, Saissetia oleae, the optimum conditions for invertase activity involve a reaction mixture of pH 5.5 and 2% sucrose at 37°C for 60 min; for amylase, pH 6.0 and 0.5% starch at 37°C for 45 min; and for trehalase, pH 5.5 and 1.5% trehalose at 37°C for 60 min. At optimal conditions and using standard enzyme activity units, both invertase and trehalase activities were much higher (about 8-fold) than that of amylase, indicating the importance of these enzymes in food digestion and energy supply. The enzyme activities were strongly affected by various host plants. Trehalase activity in scales reared on potato sprouts was about 3.5- and 4-fold that obtained in scales reared on oleander and citrus plants, respectively. An increase of about 40% for invertase and 60% amylase activity was obtained in scales reared on potato sprouts as compared with those reared on oleander or citrus plants. A good correlation was observed between enzyme activity-especially of trehalase-and scale development. The duration of one generation of the black scale reared on potato sprouts was 2.5 to 3 months, on oleander 4 to 5 months, and on citrus above 6 months. These results suggest that trehalase and to some extent invertase could be used as parameters to assess the adaptability of the black scale to its host plant. © 1976.
Note:
Related Files :
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/0022-1910(76)90087-1
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
25474
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:15
You may also be interested in
Scientific Publication
Trehalase, invertase, and amylase activities in the black scale, Saissetia oleae, and their relation to host adaptability
22
Ishaaya, I., Division of Entomology, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Swirski, E., Division of Entomology, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Trehalase, invertase, and amylase activities in the black scale, Saissetia oleae, and their relation to host adaptability
In young females of the black scale, Saissetia oleae, the optimum conditions for invertase activity involve a reaction mixture of pH 5.5 and 2% sucrose at 37°C for 60 min; for amylase, pH 6.0 and 0.5% starch at 37°C for 45 min; and for trehalase, pH 5.5 and 1.5% trehalose at 37°C for 60 min. At optimal conditions and using standard enzyme activity units, both invertase and trehalase activities were much higher (about 8-fold) than that of amylase, indicating the importance of these enzymes in food digestion and energy supply. The enzyme activities were strongly affected by various host plants. Trehalase activity in scales reared on potato sprouts was about 3.5- and 4-fold that obtained in scales reared on oleander and citrus plants, respectively. An increase of about 40% for invertase and 60% amylase activity was obtained in scales reared on potato sprouts as compared with those reared on oleander or citrus plants. A good correlation was observed between enzyme activity-especially of trehalase-and scale development. The duration of one generation of the black scale reared on potato sprouts was 2.5 to 3 months, on oleander 4 to 5 months, and on citrus above 6 months. These results suggest that trehalase and to some extent invertase could be used as parameters to assess the adaptability of the black scale to its host plant. © 1976.
Scientific Publication
You may also be interested in