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פותח על ידי קלירמאש פתרונות בע"מ -
Role of gluconic acid and pH modulation in virulence of Monilinia fructicola on peach fruit
Year:
2013
Source of publication :
Postharvest Biology and Technology
Authors :
פרוסקי, דב
;
.
Volume :
86
Co-Authors:
De Cal, A., Department of Plant Protection, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Carretera de La Coruña km 7, 28040 Madrid, Spain
Sandín-España, P., DTEVFP - Phytosanitary Products Unit, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Carretera de La Coruña km 7, 28040 Madrid, Spain
Martinez, F., Department of Plant Protection, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Carretera de La Coruña km 7, 28040 Madrid, Spain
Egüen, B., Department of Plant Protection, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Carretera de La Coruña km 7, 28040 Madrid, Spain
Chien-Ming, C., Department of Plant Pathology, National Chung-Hsing University, Taiwan
Lee, M.H., Department of Plant Pathology, National Chung-Hsing University, Taiwan
Melgarejo, P., Department of Plant Protection, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Carretera de La Coruña km 7, 28040 Madrid, Spain
Prusky, D., Centro Hispanluso de Investigaciones Agrarias (CIALE), Universidad de Salamanca, Spain, Department of Postharvest Science of Fresh Fruit, The Volcani Center, Agricultural Research Organization, P.O. Box 6, Bet Dagan 50250, Israel
Facilitators :
From page:
418
To page:
423
(
Total pages:
6
)
Abstract:
Colonization of nectarines and peaches fruit by Monilinia fructicola was accompanied by local acidification of the host tissue. The fungus acidified the host tissue in peaches and nectarines from pH 4.5 and 4.45, to pH 3.75 and 3.9, respectively. Analysis of the acidification process in colonized fruit and secondary inducing media showed that gluconic acid was the main organic acid accumulated at the infection site and under liquid-culture conditions. When comparing a nectarine cv. Big Top and peach cv. Plácido with differing sensitivities to M. fruticola, a 250% higher accumulation of gluconic acid was observed in the susceptible peach cultivar than in the less susceptible nectarine cultivar. Under liquid conditions, at pH 3.6-3.7, the relative expression of transcripts of mfpg 2 and mfpg3, encoding for two polygalacturonase genes of M. fructicola, increased 12-fold and 6-fold, respectively, suggesting the importance of acidification for the secretion of pathogenicity factors by M. fructicola. Our results indicate that ambient pH is a regulatory cue for processes linked to pathogenicity of postharvest pathogens, and that specific genes contributing to pathogenicity are expressed as a result of the environmental pH created by the pathogen. © 2013 Elsevier B.V.
Note:
Related Files :
Brown rot
Postharvest diseases
Quiescent infections
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/j.postharvbio.2013.07.012
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
27710
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:33
Scientific Publication
Role of gluconic acid and pH modulation in virulence of Monilinia fructicola on peach fruit
86
De Cal, A., Department of Plant Protection, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Carretera de La Coruña km 7, 28040 Madrid, Spain
Sandín-España, P., DTEVFP - Phytosanitary Products Unit, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Carretera de La Coruña km 7, 28040 Madrid, Spain
Martinez, F., Department of Plant Protection, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Carretera de La Coruña km 7, 28040 Madrid, Spain
Egüen, B., Department of Plant Protection, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Carretera de La Coruña km 7, 28040 Madrid, Spain
Chien-Ming, C., Department of Plant Pathology, National Chung-Hsing University, Taiwan
Lee, M.H., Department of Plant Pathology, National Chung-Hsing University, Taiwan
Melgarejo, P., Department of Plant Protection, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Carretera de La Coruña km 7, 28040 Madrid, Spain
Prusky, D., Centro Hispanluso de Investigaciones Agrarias (CIALE), Universidad de Salamanca, Spain, Department of Postharvest Science of Fresh Fruit, The Volcani Center, Agricultural Research Organization, P.O. Box 6, Bet Dagan 50250, Israel
Role of gluconic acid and pH modulation in virulence of Monilinia fructicola on peach fruit
Colonization of nectarines and peaches fruit by Monilinia fructicola was accompanied by local acidification of the host tissue. The fungus acidified the host tissue in peaches and nectarines from pH 4.5 and 4.45, to pH 3.75 and 3.9, respectively. Analysis of the acidification process in colonized fruit and secondary inducing media showed that gluconic acid was the main organic acid accumulated at the infection site and under liquid-culture conditions. When comparing a nectarine cv. Big Top and peach cv. Plácido with differing sensitivities to M. fruticola, a 250% higher accumulation of gluconic acid was observed in the susceptible peach cultivar than in the less susceptible nectarine cultivar. Under liquid conditions, at pH 3.6-3.7, the relative expression of transcripts of mfpg 2 and mfpg3, encoding for two polygalacturonase genes of M. fructicola, increased 12-fold and 6-fold, respectively, suggesting the importance of acidification for the secretion of pathogenicity factors by M. fructicola. Our results indicate that ambient pH is a regulatory cue for processes linked to pathogenicity of postharvest pathogens, and that specific genes contributing to pathogenicity are expressed as a result of the environmental pH created by the pathogen. © 2013 Elsevier B.V.
Scientific Publication
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