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פותח על ידי קלירמאש פתרונות בע"מ -
The differential susceptibility of vetch (Vicia spp.) to Orobanche aegyptiaca: Anatomical studies
Year:
2000
Source of publication :
Annals of Botany
Authors :
קליפלד, ישעיהו
;
.
Volume :
85
Co-Authors:
Goldwasser, Y., A.R.O, Dept. of Weed Research, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay, 30095, Israel
Plakhine, D., A.R.O, Dept. of Weed Research, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay, 30095, Israel
Kleifeld, Y., A.R.O, Dept. of Weed Research, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay, 30095, Israel
Zamski, E., Department of Botany, Faculty of Agriculture, Food and Environmental Sciences, Hebrew University of Jerusalem, Rehovot, 76100, Israel
Rubin, B., Department of Field Crops, Vegetables and Genetics, Faculty of Agriculture, Food and Environmental Sciences, Hebrew University of Jerusalem, Rehovot, 76100, Israel
Facilitators :
From page:
257
To page:
262
(
Total pages:
6
)
Abstract:
Vetches (Vicia spp.) are important forage legumes in the Middle East and Mediterranean regions. Most vetches are highly susceptible to the root holoparasites Orobanche aegyptiaca and O. crenata, suffering severe quality and yield losses. However, purple vetch (V. atropurpurea) has shown good resistance to Orobanche. Microscopic studies were performed to reveal anatomical differences of host-parasite interactions between susceptible and resistant vetch. Susceptible V. sativa 'Yovel' and resistant V. atropupurea 'Popany' were grown in association with O. aegyptiaca seeds, on glass microfibre sheets in a polyethylene-bag system. Whole root observations using stereoscopic microscopy detected necrotic lesions surrounding the attachments of Orobanche radicles on resistant vetch roots. Hand-cut sections examined under the light microscope revealed that in both susceptible and resistant vetch genotypes the Orobanche seeds germinated, attached and penetrated the host root epidermis and cortex. A reddish-brown secretion was observed in the apoplast at the interface between the parasite haustorium and the host tissues, including the cell walls of the resistant vetch xylem vessels. Fixed and embedded sections observed under the light microscope showed that in the susceptible genotype the parasite haustorium penetrated through the endodermis into the host vascular cylinder, successfully forming a continuum with host vascular vessels. However, in the resistant genotype, the parasite haustorium was blocked at the root endodermis layer. The blockage was coupled with secretion of unidentified material, thus preventing the parasite from establishing. These findings indicate that mechanical and possibly chemical barriers are responsible for the host defence mechanism(s) conferring resistance of V. atropurpurea to O. aegyptiaca. (C) 2000 Annals of Botany Company.
Note:
Related Files :
differential susceptibility
genetic susceptibility
parasite resistance
polyethylene
Vicia atropurpurea
Vicia sativa
עוד תגיות
תוכן קשור
More details
DOI :
10.1006/anbo.1999.1029
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
28837
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:42
You may also be interested in
Scientific Publication
The differential susceptibility of vetch (Vicia spp.) to Orobanche aegyptiaca: Anatomical studies
85
Goldwasser, Y., A.R.O, Dept. of Weed Research, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay, 30095, Israel
Plakhine, D., A.R.O, Dept. of Weed Research, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay, 30095, Israel
Kleifeld, Y., A.R.O, Dept. of Weed Research, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay, 30095, Israel
Zamski, E., Department of Botany, Faculty of Agriculture, Food and Environmental Sciences, Hebrew University of Jerusalem, Rehovot, 76100, Israel
Rubin, B., Department of Field Crops, Vegetables and Genetics, Faculty of Agriculture, Food and Environmental Sciences, Hebrew University of Jerusalem, Rehovot, 76100, Israel
The differential susceptibility of vetch (Vicia spp.) to Orobanche aegyptiaca: Anatomical studies
Vetches (Vicia spp.) are important forage legumes in the Middle East and Mediterranean regions. Most vetches are highly susceptible to the root holoparasites Orobanche aegyptiaca and O. crenata, suffering severe quality and yield losses. However, purple vetch (V. atropurpurea) has shown good resistance to Orobanche. Microscopic studies were performed to reveal anatomical differences of host-parasite interactions between susceptible and resistant vetch. Susceptible V. sativa 'Yovel' and resistant V. atropupurea 'Popany' were grown in association with O. aegyptiaca seeds, on glass microfibre sheets in a polyethylene-bag system. Whole root observations using stereoscopic microscopy detected necrotic lesions surrounding the attachments of Orobanche radicles on resistant vetch roots. Hand-cut sections examined under the light microscope revealed that in both susceptible and resistant vetch genotypes the Orobanche seeds germinated, attached and penetrated the host root epidermis and cortex. A reddish-brown secretion was observed in the apoplast at the interface between the parasite haustorium and the host tissues, including the cell walls of the resistant vetch xylem vessels. Fixed and embedded sections observed under the light microscope showed that in the susceptible genotype the parasite haustorium penetrated through the endodermis into the host vascular cylinder, successfully forming a continuum with host vascular vessels. However, in the resistant genotype, the parasite haustorium was blocked at the root endodermis layer. The blockage was coupled with secretion of unidentified material, thus preventing the parasite from establishing. These findings indicate that mechanical and possibly chemical barriers are responsible for the host defence mechanism(s) conferring resistance of V. atropurpurea to O. aegyptiaca. (C) 2000 Annals of Botany Company.
Scientific Publication
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