INFECTION PROCESS OF Fusarium oxysporum FUNGUS: A CAUSE OF DAMPING-OFF ON Acacia mangium’s SEEDLINGS

Fusarium oxysporum is the causal agent of damping-off disease. The fungus attacks seedlings of many plant species, including Acacia mangium. In order to effectively control the disease, detailed information on how the fungus infects seedlings of A. mangium and how the plant responds to the fungal in...

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Main Authors: Siti Muslimah Widyastuti, Susanti Tasik, Harjono
Format: Article
Language:English
Published: Universitas Brawijaya 2013-06-01
Series:AGRIVITA Journal of Agricultural Science
Subjects:
Online Access:http://agrivita.ub.ac.id/index.php/agrivita/article/view/275
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spelling doaj-3ba813ad599941b9b43a4131d91c59d32020-11-24T22:16:44ZengUniversitas BrawijayaAGRIVITA Journal of Agricultural Science0126-05370126-05372013-06-01352110118INFECTION PROCESS OF Fusarium oxysporum FUNGUS: A CAUSE OF DAMPING-OFF ON Acacia mangium’s SEEDLINGSSiti Muslimah Widyastuti0Susanti Tasik1Harjono2Faculty of Forestry, Gadjah Mada UniversityFaculty of Forestry, The State University of PapuaFaculty of Forestry, Gadjah Mada UniversityFusarium oxysporum is the causal agent of damping-off disease. The fungus attacks seedlings of many plant species, including Acacia mangium. In order to effectively control the disease, detailed information on how the fungus infects seedlings of A. mangium and how the plant responds to the fungal infection is essentially needed. The objectives of this research were to investigate: (1) the infection process of F. oxysporumon seedlings of A. mangium, (2) the defence response of A. mangium seedling to infection by F. oxysporum. The fungal pathogen was identified, followed by performance of pathogenicity test. The infection process was followed by macroscopic observation as well as microscopic observation. The result indicated that fungal spore germination was observed at two-day post inoculation in planta. At four-daypost inoculation, hyphae of F. oxysporum had penetrated the collar root of A. mangium seedling via stomata aperture. In addition, fungal hyphae had grown intercellulary in to the vascular tissue. Correspondingly, hypersensitive response was also detected at the stomata aperture. However, this defence mechanism is not effective in stopping the fungus since F. oxysporum is a necrotropic pathogen. Moreover, accumulation of lignin, but not callose, was observed. http://agrivita.ub.ac.id/index.php/agrivita/article/view/275Fusarium oxysporumdamping-offAcacia mangium
collection DOAJ
language English
format Article
sources DOAJ
author Siti Muslimah Widyastuti
Susanti Tasik
Harjono
spellingShingle Siti Muslimah Widyastuti
Susanti Tasik
Harjono
INFECTION PROCESS OF Fusarium oxysporum FUNGUS: A CAUSE OF DAMPING-OFF ON Acacia mangium’s SEEDLINGS
AGRIVITA Journal of Agricultural Science
Fusarium oxysporum
damping-off
Acacia mangium
author_facet Siti Muslimah Widyastuti
Susanti Tasik
Harjono
author_sort Siti Muslimah Widyastuti
title INFECTION PROCESS OF Fusarium oxysporum FUNGUS: A CAUSE OF DAMPING-OFF ON Acacia mangium’s SEEDLINGS
title_short INFECTION PROCESS OF Fusarium oxysporum FUNGUS: A CAUSE OF DAMPING-OFF ON Acacia mangium’s SEEDLINGS
title_full INFECTION PROCESS OF Fusarium oxysporum FUNGUS: A CAUSE OF DAMPING-OFF ON Acacia mangium’s SEEDLINGS
title_fullStr INFECTION PROCESS OF Fusarium oxysporum FUNGUS: A CAUSE OF DAMPING-OFF ON Acacia mangium’s SEEDLINGS
title_full_unstemmed INFECTION PROCESS OF Fusarium oxysporum FUNGUS: A CAUSE OF DAMPING-OFF ON Acacia mangium’s SEEDLINGS
title_sort infection process of fusarium oxysporum fungus: a cause of damping-off on acacia mangium’s seedlings
publisher Universitas Brawijaya
series AGRIVITA Journal of Agricultural Science
issn 0126-0537
0126-0537
publishDate 2013-06-01
description Fusarium oxysporum is the causal agent of damping-off disease. The fungus attacks seedlings of many plant species, including Acacia mangium. In order to effectively control the disease, detailed information on how the fungus infects seedlings of A. mangium and how the plant responds to the fungal infection is essentially needed. The objectives of this research were to investigate: (1) the infection process of F. oxysporumon seedlings of A. mangium, (2) the defence response of A. mangium seedling to infection by F. oxysporum. The fungal pathogen was identified, followed by performance of pathogenicity test. The infection process was followed by macroscopic observation as well as microscopic observation. The result indicated that fungal spore germination was observed at two-day post inoculation in planta. At four-daypost inoculation, hyphae of F. oxysporum had penetrated the collar root of A. mangium seedling via stomata aperture. In addition, fungal hyphae had grown intercellulary in to the vascular tissue. Correspondingly, hypersensitive response was also detected at the stomata aperture. However, this defence mechanism is not effective in stopping the fungus since F. oxysporum is a necrotropic pathogen. Moreover, accumulation of lignin, but not callose, was observed.
topic Fusarium oxysporum
damping-off
Acacia mangium
url http://agrivita.ub.ac.id/index.php/agrivita/article/view/275
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AT susantitasik infectionprocessoffusariumoxysporumfungusacauseofdampingoffonacaciamangiumsseedlings
AT harjono infectionprocessoffusariumoxysporumfungusacauseofdampingoffonacaciamangiumsseedlings
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