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קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
The temperature response and aggressiveness of Peyronellaea pinodes isolates originating from wild and domesticated Pisum sp. in Israel
Year:
2016
Source of publication :
Phytopathology
Authors :
פרנקל, עומר
;
.
שטיינברג, דני
;
.
שרמן, עמיר
;
.
Volume :
106
Co-Authors:
Golani, M., Department of Plant Pathology, Volcani Center, Agricultural Research Organization, Bet-Dagan, Israel, Robert H Smith Faculty of Agriculture, Food and Environment, Levi Eshkol School of Agriculture, Hebrew University of Jerusalem, Rehovot, Israel
Abbo, S., Robert H Smith Faculty of Agriculture, Food and Environment, Levi Eshkol School of Agriculture, Hebrew University of Jerusalem, Rehovot, Israel
Sherman, A., Genomics Department, Volcani Center, Agricultural Research Organization, Bet-Dagan, Israel
Frenkel, O., Department of Plant Pathology, Volcani Center, Agricultural Research Organization, Bet-Dagan, Israel
Shtienberg, D., Department of Plant Pathology, Volcani Center, Agricultural Research Organization, Bet-Dagan, Israel
Facilitators :
From page:
824
To page:
832
(
Total pages:
9
)
Abstract:
Domesticated pea fields are grown in relatively close proximity to wild pea species in Israel. Despite the major role attributed to ascochyta blight in causing yield losses in domesticated pea, very limited information is available on the pathogens prevailing in natural ecosystems. The objectives of this study were (i) to identify the species causing ascochyta blight symptoms on leaves, stems, and petioles of domesticated pea and wild Pisum plants in Israel, and (ii) to quantify the temperature response(s) and aggressiveness of such pathogens originating from Pisum plants growing in sympatric and allopatric contexts. Eighteen fungal isolates were examined and identified; three of them were sampled from Pisum sativum, 11 from Pisum fulvum, and four from Pisum elatius. All isolates were identified as Peyronellaea pinodes. Spore germination and mycelial growth took place over a wide range of temperatures, the lower and upper cardinal temperatures being 2 to 9 and 33 to 38°C, respectively; the optimal temperatures ranged from 22 to 26°C. At an optimal temperature, disease severity was significantly higher for plants maintained under moist conditions for 24 h postinoculation than for those exposed to humidity for 5 or 10 h. Analyses of the data revealed that temperature responses, spore germination rates, and aggressiveness of isolates sampled from domesticated pea plants did not differ from those of isolates sampled from adjacent or distant wild populations. Host specificity was not observed. These observations suggest that Israel may be inhabited by a single metapopulation of P. pinodes. © 2016 The American Phytopathological Society.
Note:
Related Files :
Ascomycota
Didymella pinodes
Israel
Microbiology
Plant Disease
Plant Diseases
species difference
temperature
Temperature adaptation
עוד תגיות
תוכן קשור
More details
DOI :
10.1094/PHYTO-11-15-0306-R
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
19216
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:27
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Scientific Publication
The temperature response and aggressiveness of Peyronellaea pinodes isolates originating from wild and domesticated Pisum sp. in Israel
106
Golani, M., Department of Plant Pathology, Volcani Center, Agricultural Research Organization, Bet-Dagan, Israel, Robert H Smith Faculty of Agriculture, Food and Environment, Levi Eshkol School of Agriculture, Hebrew University of Jerusalem, Rehovot, Israel
Abbo, S., Robert H Smith Faculty of Agriculture, Food and Environment, Levi Eshkol School of Agriculture, Hebrew University of Jerusalem, Rehovot, Israel
Sherman, A., Genomics Department, Volcani Center, Agricultural Research Organization, Bet-Dagan, Israel
Frenkel, O., Department of Plant Pathology, Volcani Center, Agricultural Research Organization, Bet-Dagan, Israel
Shtienberg, D., Department of Plant Pathology, Volcani Center, Agricultural Research Organization, Bet-Dagan, Israel
The temperature response and aggressiveness of Peyronellaea pinodes isolates originating from wild and domesticated Pisum sp. in Israel
Domesticated pea fields are grown in relatively close proximity to wild pea species in Israel. Despite the major role attributed to ascochyta blight in causing yield losses in domesticated pea, very limited information is available on the pathogens prevailing in natural ecosystems. The objectives of this study were (i) to identify the species causing ascochyta blight symptoms on leaves, stems, and petioles of domesticated pea and wild Pisum plants in Israel, and (ii) to quantify the temperature response(s) and aggressiveness of such pathogens originating from Pisum plants growing in sympatric and allopatric contexts. Eighteen fungal isolates were examined and identified; three of them were sampled from Pisum sativum, 11 from Pisum fulvum, and four from Pisum elatius. All isolates were identified as Peyronellaea pinodes. Spore germination and mycelial growth took place over a wide range of temperatures, the lower and upper cardinal temperatures being 2 to 9 and 33 to 38°C, respectively; the optimal temperatures ranged from 22 to 26°C. At an optimal temperature, disease severity was significantly higher for plants maintained under moist conditions for 24 h postinoculation than for those exposed to humidity for 5 or 10 h. Analyses of the data revealed that temperature responses, spore germination rates, and aggressiveness of isolates sampled from domesticated pea plants did not differ from those of isolates sampled from adjacent or distant wild populations. Host specificity was not observed. These observations suggest that Israel may be inhabited by a single metapopulation of P. pinodes. © 2016 The American Phytopathological Society.
Scientific Publication
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