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פותח על ידי קלירמאש פתרונות בע"מ -
A chemo attractant in onion root exudates recognized by Ditylenchus dipsaci in laboratory bioassay
Year:
2003
Source of publication :
Phytopathology
Authors :
בר-אייל, מאירה
;
.
שפיגל, יצחק
;
.
Volume :
93
Co-Authors:
Spiegel, Y., Department of Nematology, Agricultural Research Organization, The Volcani Center, Bet Dagan 50-250, Israel
Burrows, P.M., Dept. of Experimental Statistics, Clemson University, Clemson, SC 29634, United States
Bar-Eyal, M., Department of Nematology, Agricultural Research Organization, The Volcani Center, Bet Dagan 50-250, Israel
Facilitators :
From page:
127
To page:
132
(
Total pages:
6
)
Abstract:
A quantitative bioassay that translates preferences of axenically cultured and field population of Ditylenchus dipsaci, observed in vitro, into relative attractiveness of sterile root exudates preparations and their components is described. Onion (Allium cepa cv. White Lisbon) root exudates (ORE) are consistently and significantly much more attractive than the buffer control in all these assays. Exudates from oat cv. Lodi, mustard cv. Albatross and tomato cv. Rehovot 13 are significantly more attractive than the buffer but less attractive than ORE; Arabidopsis sp. cv. Landsberg erecta, oil seed rape cv. Cetes and wheat cv. Bet Hashita are as attractive as the buffer, but canary grass and clover exudates are less attractive than the buffer and, therefore, are classified as repellent. No significant differences in relative attractiveness were detected among exudates from other two cultivars of onion (Texas Grano 502 and Granex Hybrid) and one cultivar of leek (Large American Flag), but exudates from one onion (cv. Evergreen Long White Bunching) and one leek (cv. Broad London) were less attractive than ORE. Relative attractiveness is linear in relation to dilution exponent and therefore log-linear in relation to ORE concentration. Host (onion) penetration study reveals that penetration preferences by D. dipsaci follow the same pattern as those predicted by relative attractiveness coefficients estimated in the bioassays. Preliminary characterization of the chemo attractant from ORE, using the behavioral bioassay, demonstrated that it was stable to heat and to proteolytic enzymes, nonvolatile and water soluble with a molecular mass <700 kDa.
Note:
Related Files :
Allium cepa
arabidopsis
Ditylenchus dipsaci
fungi
Phalaris aquatica
Plant-parasitic nematode
Trifolium
Triticum aestivum
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
23785
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:02
Scientific Publication
A chemo attractant in onion root exudates recognized by Ditylenchus dipsaci in laboratory bioassay
93
Spiegel, Y., Department of Nematology, Agricultural Research Organization, The Volcani Center, Bet Dagan 50-250, Israel
Burrows, P.M., Dept. of Experimental Statistics, Clemson University, Clemson, SC 29634, United States
Bar-Eyal, M., Department of Nematology, Agricultural Research Organization, The Volcani Center, Bet Dagan 50-250, Israel
A chemo attractant in onion root exudates recognized by Ditylenchus dipsaci in laboratory bioassay
A quantitative bioassay that translates preferences of axenically cultured and field population of Ditylenchus dipsaci, observed in vitro, into relative attractiveness of sterile root exudates preparations and their components is described. Onion (Allium cepa cv. White Lisbon) root exudates (ORE) are consistently and significantly much more attractive than the buffer control in all these assays. Exudates from oat cv. Lodi, mustard cv. Albatross and tomato cv. Rehovot 13 are significantly more attractive than the buffer but less attractive than ORE; Arabidopsis sp. cv. Landsberg erecta, oil seed rape cv. Cetes and wheat cv. Bet Hashita are as attractive as the buffer, but canary grass and clover exudates are less attractive than the buffer and, therefore, are classified as repellent. No significant differences in relative attractiveness were detected among exudates from other two cultivars of onion (Texas Grano 502 and Granex Hybrid) and one cultivar of leek (Large American Flag), but exudates from one onion (cv. Evergreen Long White Bunching) and one leek (cv. Broad London) were less attractive than ORE. Relative attractiveness is linear in relation to dilution exponent and therefore log-linear in relation to ORE concentration. Host (onion) penetration study reveals that penetration preferences by D. dipsaci follow the same pattern as those predicted by relative attractiveness coefficients estimated in the bioassays. Preliminary characterization of the chemo attractant from ORE, using the behavioral bioassay, demonstrated that it was stable to heat and to proteolytic enzymes, nonvolatile and water soluble with a molecular mass <700 kDa.
Scientific Publication
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