Inoculum and disease dynamics of citrus greasy spot caused by Zasmidium citri-griseum in sweet orange in Panama

Citrus greasy spot, caused by Zasmidium citri-griseum, is a disease characterized by inducing premature defoliation and a reduction in yield in different citrus species. Greasy spot is the most prevalent fungal disease in sweet orange in Panama. Nevertheless, no epidemiological information is availa...

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Main Authors: Aguilera-Cogley, Vidal, Sedano, Maria E., Vicent, Antonio
Format: Artículo
Language:Inglés
Published: Wiley Online Library 2023
Subjects:
Online Access:https://hdl.handle.net/20.500.11939/8598
https://bsppjournals.onlinelibrary.wiley.com/doi/abs/10.1111/ppa.13703
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author Aguilera-Cogley, Vidal
Sedano, Maria E.
Vicent, Antonio
author_browse Aguilera-Cogley, Vidal
Sedano, Maria E.
Vicent, Antonio
author_facet Aguilera-Cogley, Vidal
Sedano, Maria E.
Vicent, Antonio
author_sort Aguilera-Cogley, Vidal
collection ReDivia
description Citrus greasy spot, caused by Zasmidium citri-griseum, is a disease characterized by inducing premature defoliation and a reduction in yield in different citrus species. Greasy spot is the most prevalent fungal disease in sweet orange in Panama. Nevertheless, no epidemiological information is available. In this study, the dynamics of the defoliation, inoculum production, airborne inoculum and infection periods of Z. citri-griseum and their associations with environmental conditions were determined in Panama. The period from December to April was characterized by greater defoliation of trees, with the greatest amount of leaf litter being produced in January and February. The number of days until total leaf decomposition (DLD) was related to the number of rainy days >1 mm (NRD), accumulated rainfall (AR) and average relative humidity (ARH). The number of ascospores released from leaf litter (ASCL) was related to DLD, NRD, AR and average temperature (AT). The greatest amounts of airborne ascospores (AASC) of Z. citri-griseum occurred during April and May, when the rainy season begins in Panama. Similarly, the highest incidence (INC) of greasy spot in the trap plants coincided with the months of the greatest availability of airborne ascospores. However, infections were also recorded during other times of the year. The AASC or INC data were fitted to Bayesian models including meteorological variables and an autoregressive temporal component, the latter being the most influential. The results obtained in this study will allow the development of more efficient and sustainable fungicide programmes for greasy spot control in Panama.
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spelling ReDivia85982025-04-25T14:49:08Z Inoculum and disease dynamics of citrus greasy spot caused by Zasmidium citri-griseum in sweet orange in Panama Aguilera-Cogley, Vidal Sedano, Maria E. Vicent, Antonio Autoregressive temporal component Integrated nested Laplace approximation (INLA) Zasmidium citri-griseum H20 Plant diseases U10 Mathematical and statistical methods Central America Epidemiology Mycosphaerella citri Sweet oranges Airborne infection Defoliation Citrus greasy spot, caused by Zasmidium citri-griseum, is a disease characterized by inducing premature defoliation and a reduction in yield in different citrus species. Greasy spot is the most prevalent fungal disease in sweet orange in Panama. Nevertheless, no epidemiological information is available. In this study, the dynamics of the defoliation, inoculum production, airborne inoculum and infection periods of Z. citri-griseum and their associations with environmental conditions were determined in Panama. The period from December to April was characterized by greater defoliation of trees, with the greatest amount of leaf litter being produced in January and February. The number of days until total leaf decomposition (DLD) was related to the number of rainy days >1 mm (NRD), accumulated rainfall (AR) and average relative humidity (ARH). The number of ascospores released from leaf litter (ASCL) was related to DLD, NRD, AR and average temperature (AT). The greatest amounts of airborne ascospores (AASC) of Z. citri-griseum occurred during April and May, when the rainy season begins in Panama. Similarly, the highest incidence (INC) of greasy spot in the trap plants coincided with the months of the greatest availability of airborne ascospores. However, infections were also recorded during other times of the year. The AASC or INC data were fitted to Bayesian models including meteorological variables and an autoregressive temporal component, the latter being the most influential. The results obtained in this study will allow the development of more efficient and sustainable fungicide programmes for greasy spot control in Panama. 2023-04-04T10:56:08Z 2023-04-04T10:56:08Z 2023 article publishedVersion Aguilera-Cogley, V., Sedano, E. & Vicent, A. (2022). Inoculum and disease dynamics of citrus greasy spot caused by Zasmidium citri-griseum in sweet orange in Panama. Plant Pathology, Published on-line [18 January 2023], 1-12. 1365-3059 (eISSN) 0032-0862 https://hdl.handle.net/20.500.11939/8598 10.1111/ppa.13703 https://bsppjournals.onlinelibrary.wiley.com/doi/abs/10.1111/ppa.13703 en Research was funded by Programa de Formación de los INIA Iberoamerica and INIA RTA2010-00105-00-00-FEDER. VAC was supported by SENACYT through the National Research System (SNI) (grant 39-2021). info:eu-repo/grantAgreement/MICINN/Programa Nacional de Investigación Fundamental/RTA2010-00105-00-00/ES/EPIDEMIOLOGÍA DE LA MANCHA MARRÓN CAUSADA POR ALTERNARIA ALTERNATA Y LA MANCHA FOLIAR CAUSADA POR MYCOSPHAERELLA EN CÍTRICOS. DESARROLLO DE ESTRATEGIAS DE CONTROL EFICIENTES Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ openAccess Wiley Online Library electronico
spellingShingle Autoregressive temporal component
Integrated nested Laplace approximation (INLA)
Zasmidium citri-griseum
H20 Plant diseases
U10 Mathematical and statistical methods
Central America
Epidemiology
Mycosphaerella citri
Sweet oranges
Airborne infection
Defoliation
Aguilera-Cogley, Vidal
Sedano, Maria E.
Vicent, Antonio
Inoculum and disease dynamics of citrus greasy spot caused by Zasmidium citri-griseum in sweet orange in Panama
title Inoculum and disease dynamics of citrus greasy spot caused by Zasmidium citri-griseum in sweet orange in Panama
title_full Inoculum and disease dynamics of citrus greasy spot caused by Zasmidium citri-griseum in sweet orange in Panama
title_fullStr Inoculum and disease dynamics of citrus greasy spot caused by Zasmidium citri-griseum in sweet orange in Panama
title_full_unstemmed Inoculum and disease dynamics of citrus greasy spot caused by Zasmidium citri-griseum in sweet orange in Panama
title_short Inoculum and disease dynamics of citrus greasy spot caused by Zasmidium citri-griseum in sweet orange in Panama
title_sort inoculum and disease dynamics of citrus greasy spot caused by zasmidium citri griseum in sweet orange in panama
topic Autoregressive temporal component
Integrated nested Laplace approximation (INLA)
Zasmidium citri-griseum
H20 Plant diseases
U10 Mathematical and statistical methods
Central America
Epidemiology
Mycosphaerella citri
Sweet oranges
Airborne infection
Defoliation
url https://hdl.handle.net/20.500.11939/8598
https://bsppjournals.onlinelibrary.wiley.com/doi/abs/10.1111/ppa.13703
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