Effect of simulated rainfall events on spore dispersal and spore stocks in three tropical pathosystems
Tap and puff followed by dry spore transport (TP), spore dislodging from lesion and drip (DR) along plant tissues, and splash dispersal (SP) were monitored under simulated rain conditions in coffee rust, peanut rust and bean angular leaf spot. All three processes were triggered by rainfall events in the three diseases. Results suggested that TP predominates in low intensity and short rainfalls, whereas SP remains stable in importance under high intensity, long rainfalls. Any rainfall event strongly depleted (20-40%) stocks of spores in a diseased canopy rendering the event of major epidemiological importance when repletion is slow. Medium-duration and intensity rainfalls (e.g., 5-10 mn, 30 mm.h-1) generated large flows of spores to the soil (10-40% of stocks). For biotrophic pathogens, such events are thus strong epidemiological penalties if they do not lead to efficient disease spread. (Texte intégral)
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Subjects: | H20 - Maladies des plantes, Coffea, Arachis hypogaea, Phaseolus, rouille, maladie fongique, pluie, spore fongique, épidémiologie, Hemileia vastatrix, Puccinia arachidis, Phaeoisariopsis, http://aims.fao.org/aos/agrovoc/c_1720, http://aims.fao.org/aos/agrovoc/c_572, http://aims.fao.org/aos/agrovoc/c_5763, http://aims.fao.org/aos/agrovoc/c_6710, http://aims.fao.org/aos/agrovoc/c_11042, http://aims.fao.org/aos/agrovoc/c_6435, http://aims.fao.org/aos/agrovoc/c_35118, http://aims.fao.org/aos/agrovoc/c_2615, http://aims.fao.org/aos/agrovoc/c_32323, http://aims.fao.org/aos/agrovoc/c_27323, http://aims.fao.org/aos/agrovoc/c_31595, |
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dig-cirad-fr-5213252024-01-28T12:40:51Z http://agritrop.cirad.fr/521325/ http://agritrop.cirad.fr/521325/ Effect of simulated rainfall events on spore dispersal and spore stocks in three tropical pathosystems. Savary Serge, Janeau J.L., Allorent D., Escalante M., Avelino Jacques, Willocquet Laetitia. 2004. In : Annual Meeting of the American Phytopathological Society, July 31-August 4, 2004, Anaheim (USA). St Paul : APS, Résumé Annual Meeting of the American Phytopathological Society, Anaheim, États-Unis, 31 Juillet 2004/4 Août 2004. Effect of simulated rainfall events on spore dispersal and spore stocks in three tropical pathosystems Savary, Serge Janeau, J.L. Allorent, D. Escalante, M. Avelino, Jacques Willocquet, Laetitia eng 2004 APS Annual Meeting of the American Phytopathological Society, July 31-August 4, 2004, Anaheim (USA) H20 - Maladies des plantes Coffea Arachis hypogaea Phaseolus rouille maladie fongique pluie spore fongique épidémiologie Hemileia vastatrix Puccinia arachidis Phaeoisariopsis http://aims.fao.org/aos/agrovoc/c_1720 http://aims.fao.org/aos/agrovoc/c_572 http://aims.fao.org/aos/agrovoc/c_5763 http://aims.fao.org/aos/agrovoc/c_6710 http://aims.fao.org/aos/agrovoc/c_11042 http://aims.fao.org/aos/agrovoc/c_6435 http://aims.fao.org/aos/agrovoc/c_35118 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_32323 http://aims.fao.org/aos/agrovoc/c_27323 http://aims.fao.org/aos/agrovoc/c_31595 Tap and puff followed by dry spore transport (TP), spore dislodging from lesion and drip (DR) along plant tissues, and splash dispersal (SP) were monitored under simulated rain conditions in coffee rust, peanut rust and bean angular leaf spot. All three processes were triggered by rainfall events in the three diseases. Results suggested that TP predominates in low intensity and short rainfalls, whereas SP remains stable in importance under high intensity, long rainfalls. Any rainfall event strongly depleted (20-40%) stocks of spores in a diseased canopy rendering the event of major epidemiological importance when repletion is slow. Medium-duration and intensity rainfalls (e.g., 5-10 mn, 30 mm.h-1) generated large flows of spores to the soil (10-40% of stocks). For biotrophic pathogens, such events are thus strong epidemiological penalties if they do not lead to efficient disease spread. (Texte intégral) conference_item info:eu-repo/semantics/conferenceObject Conference info:eu-repo/semantics/closedAccess http://agritrop.cirad.fr/521324/ |
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H20 - Maladies des plantes Coffea Arachis hypogaea Phaseolus rouille maladie fongique pluie spore fongique épidémiologie Hemileia vastatrix Puccinia arachidis Phaeoisariopsis http://aims.fao.org/aos/agrovoc/c_1720 http://aims.fao.org/aos/agrovoc/c_572 http://aims.fao.org/aos/agrovoc/c_5763 http://aims.fao.org/aos/agrovoc/c_6710 http://aims.fao.org/aos/agrovoc/c_11042 http://aims.fao.org/aos/agrovoc/c_6435 http://aims.fao.org/aos/agrovoc/c_35118 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_32323 http://aims.fao.org/aos/agrovoc/c_27323 http://aims.fao.org/aos/agrovoc/c_31595 H20 - Maladies des plantes Coffea Arachis hypogaea Phaseolus rouille maladie fongique pluie spore fongique épidémiologie Hemileia vastatrix Puccinia arachidis Phaeoisariopsis http://aims.fao.org/aos/agrovoc/c_1720 http://aims.fao.org/aos/agrovoc/c_572 http://aims.fao.org/aos/agrovoc/c_5763 http://aims.fao.org/aos/agrovoc/c_6710 http://aims.fao.org/aos/agrovoc/c_11042 http://aims.fao.org/aos/agrovoc/c_6435 http://aims.fao.org/aos/agrovoc/c_35118 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_32323 http://aims.fao.org/aos/agrovoc/c_27323 http://aims.fao.org/aos/agrovoc/c_31595 |
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H20 - Maladies des plantes Coffea Arachis hypogaea Phaseolus rouille maladie fongique pluie spore fongique épidémiologie Hemileia vastatrix Puccinia arachidis Phaeoisariopsis http://aims.fao.org/aos/agrovoc/c_1720 http://aims.fao.org/aos/agrovoc/c_572 http://aims.fao.org/aos/agrovoc/c_5763 http://aims.fao.org/aos/agrovoc/c_6710 http://aims.fao.org/aos/agrovoc/c_11042 http://aims.fao.org/aos/agrovoc/c_6435 http://aims.fao.org/aos/agrovoc/c_35118 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_32323 http://aims.fao.org/aos/agrovoc/c_27323 http://aims.fao.org/aos/agrovoc/c_31595 H20 - Maladies des plantes Coffea Arachis hypogaea Phaseolus rouille maladie fongique pluie spore fongique épidémiologie Hemileia vastatrix Puccinia arachidis Phaeoisariopsis http://aims.fao.org/aos/agrovoc/c_1720 http://aims.fao.org/aos/agrovoc/c_572 http://aims.fao.org/aos/agrovoc/c_5763 http://aims.fao.org/aos/agrovoc/c_6710 http://aims.fao.org/aos/agrovoc/c_11042 http://aims.fao.org/aos/agrovoc/c_6435 http://aims.fao.org/aos/agrovoc/c_35118 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_32323 http://aims.fao.org/aos/agrovoc/c_27323 http://aims.fao.org/aos/agrovoc/c_31595 Savary, Serge Janeau, J.L. Allorent, D. Escalante, M. Avelino, Jacques Willocquet, Laetitia Effect of simulated rainfall events on spore dispersal and spore stocks in three tropical pathosystems |
description |
Tap and puff followed by dry spore transport (TP), spore dislodging from lesion and drip (DR) along plant tissues, and splash dispersal (SP) were monitored under simulated rain conditions in coffee rust, peanut rust and bean angular leaf spot. All three processes were triggered by rainfall events in the three diseases. Results suggested that TP predominates in low intensity and short rainfalls, whereas SP remains stable in importance under high intensity, long rainfalls. Any rainfall event strongly depleted (20-40%) stocks of spores in a diseased canopy rendering the event of major epidemiological importance when repletion is slow. Medium-duration and intensity rainfalls (e.g., 5-10 mn, 30 mm.h-1) generated large flows of spores to the soil (10-40% of stocks). For biotrophic pathogens, such events are thus strong epidemiological penalties if they do not lead to efficient disease spread. (Texte intégral) |
format |
conference_item |
topic_facet |
H20 - Maladies des plantes Coffea Arachis hypogaea Phaseolus rouille maladie fongique pluie spore fongique épidémiologie Hemileia vastatrix Puccinia arachidis Phaeoisariopsis http://aims.fao.org/aos/agrovoc/c_1720 http://aims.fao.org/aos/agrovoc/c_572 http://aims.fao.org/aos/agrovoc/c_5763 http://aims.fao.org/aos/agrovoc/c_6710 http://aims.fao.org/aos/agrovoc/c_11042 http://aims.fao.org/aos/agrovoc/c_6435 http://aims.fao.org/aos/agrovoc/c_35118 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_32323 http://aims.fao.org/aos/agrovoc/c_27323 http://aims.fao.org/aos/agrovoc/c_31595 |
author |
Savary, Serge Janeau, J.L. Allorent, D. Escalante, M. Avelino, Jacques Willocquet, Laetitia |
author_facet |
Savary, Serge Janeau, J.L. Allorent, D. Escalante, M. Avelino, Jacques Willocquet, Laetitia |
author_sort |
Savary, Serge |
title |
Effect of simulated rainfall events on spore dispersal and spore stocks in three tropical pathosystems |
title_short |
Effect of simulated rainfall events on spore dispersal and spore stocks in three tropical pathosystems |
title_full |
Effect of simulated rainfall events on spore dispersal and spore stocks in three tropical pathosystems |
title_fullStr |
Effect of simulated rainfall events on spore dispersal and spore stocks in three tropical pathosystems |
title_full_unstemmed |
Effect of simulated rainfall events on spore dispersal and spore stocks in three tropical pathosystems |
title_sort |
effect of simulated rainfall events on spore dispersal and spore stocks in three tropical pathosystems |
publisher |
APS |
url |
http://agritrop.cirad.fr/521325/ |
work_keys_str_mv |
AT savaryserge effectofsimulatedrainfalleventsonsporedispersalandsporestocksinthreetropicalpathosystems AT janeaujl effectofsimulatedrainfalleventsonsporedispersalandsporestocksinthreetropicalpathosystems AT allorentd effectofsimulatedrainfalleventsonsporedispersalandsporestocksinthreetropicalpathosystems AT escalantem effectofsimulatedrainfalleventsonsporedispersalandsporestocksinthreetropicalpathosystems AT avelinojacques effectofsimulatedrainfalleventsonsporedispersalandsporestocksinthreetropicalpathosystems AT willocquetlaetitia effectofsimulatedrainfalleventsonsporedispersalandsporestocksinthreetropicalpathosystems |
_version_ |
1792495912036073472 |