Modified culture assay to obtain a diversity of hyphal structures of Ceratobasidium theobromae-VSD pathogen on cocoa

Abstract. Junaid M, Guest D. 2021. Modified culture assay to obtain a diversity of hyphal structures of Ceratobasidium theobromae, VSD pathogen on cocoa. Biodiversitas 22: 1879-1886. Ceratobasidium theobromae, a causal agent of vascular streak dieback (VSD) disease, is a fastidious Basidiomycete fun...

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Autores principales: Muhammad Junaid, DAVID GUEST
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Publicado: MBI & UNS Solo 2021
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spelling oai:doaj.org-article:55a99d7734004af6bfe456c83afa012a2021-11-22T00:57:38ZModified culture assay to obtain a diversity of hyphal structures of Ceratobasidium theobromae-VSD pathogen on cocoa1412-033X2085-472210.13057/biodiv/d220434https://doaj.org/article/55a99d7734004af6bfe456c83afa012a2021-03-01T00:00:00Zhttps://smujo.id/biodiv/article/view/7574https://doaj.org/toc/1412-033Xhttps://doaj.org/toc/2085-4722Abstract. Junaid M, Guest D. 2021. Modified culture assay to obtain a diversity of hyphal structures of Ceratobasidium theobromae, VSD pathogen on cocoa. Biodiversitas 22: 1879-1886. Ceratobasidium theobromae, a causal agent of vascular streak dieback (VSD) disease, is a fastidious Basidiomycete fungus devastating cocoa in Southeast Asia Melanesia. One sought-after in vitro technique is pathogen subculture. As an obligate parasite, growing the pathogen onto an artificial medium is always problematic. In this paper, a new design is demonstrated to obtain a single colony of the pathogen with hyphal diversity. Putative C. theobromae is obtained from infected leaves and petioles of cocoa using rigorous surface sterilization before culturing on standard water agar (WA) medium. Once the fungus grows out from the tissue, the infected plant tissue is then removed carefully, leaving mycelium's uninterrupted growth. About 200 mL of liquid Corticium culture medium (CCM) is injected to submerge the solid medium layer, nurture hyphae development, and allow generative structure formation. Molecular amplification with a pair primer of ITS 1B (forward) and 4B (reverse) specific for fungal Basidiomycete DNA with a touchdown undertook thermal cycler program. PCR product amplification successfully confirmed the presence of C. theobromae DNA collected from the samples with VSD symptomatic lesions and identified a diversity of hyphal and branching formations.Muhammad JunaidDAVID GUESTMBI & UNS Soloarticleceratobasidium theobromae, diverse filamentous structures, modified culture assay, pcr checkBiology (General)QH301-705.5ENBiodiversitas, Vol 22, Iss 4 (2021)
institution DOAJ
collection DOAJ
language EN
topic ceratobasidium theobromae, diverse filamentous structures, modified culture assay, pcr check
Biology (General)
QH301-705.5
spellingShingle ceratobasidium theobromae, diverse filamentous structures, modified culture assay, pcr check
Biology (General)
QH301-705.5
Muhammad Junaid
DAVID GUEST
Modified culture assay to obtain a diversity of hyphal structures of Ceratobasidium theobromae-VSD pathogen on cocoa
description Abstract. Junaid M, Guest D. 2021. Modified culture assay to obtain a diversity of hyphal structures of Ceratobasidium theobromae, VSD pathogen on cocoa. Biodiversitas 22: 1879-1886. Ceratobasidium theobromae, a causal agent of vascular streak dieback (VSD) disease, is a fastidious Basidiomycete fungus devastating cocoa in Southeast Asia Melanesia. One sought-after in vitro technique is pathogen subculture. As an obligate parasite, growing the pathogen onto an artificial medium is always problematic. In this paper, a new design is demonstrated to obtain a single colony of the pathogen with hyphal diversity. Putative C. theobromae is obtained from infected leaves and petioles of cocoa using rigorous surface sterilization before culturing on standard water agar (WA) medium. Once the fungus grows out from the tissue, the infected plant tissue is then removed carefully, leaving mycelium's uninterrupted growth. About 200 mL of liquid Corticium culture medium (CCM) is injected to submerge the solid medium layer, nurture hyphae development, and allow generative structure formation. Molecular amplification with a pair primer of ITS 1B (forward) and 4B (reverse) specific for fungal Basidiomycete DNA with a touchdown undertook thermal cycler program. PCR product amplification successfully confirmed the presence of C. theobromae DNA collected from the samples with VSD symptomatic lesions and identified a diversity of hyphal and branching formations.
format article
author Muhammad Junaid
DAVID GUEST
author_facet Muhammad Junaid
DAVID GUEST
author_sort Muhammad Junaid
title Modified culture assay to obtain a diversity of hyphal structures of Ceratobasidium theobromae-VSD pathogen on cocoa
title_short Modified culture assay to obtain a diversity of hyphal structures of Ceratobasidium theobromae-VSD pathogen on cocoa
title_full Modified culture assay to obtain a diversity of hyphal structures of Ceratobasidium theobromae-VSD pathogen on cocoa
title_fullStr Modified culture assay to obtain a diversity of hyphal structures of Ceratobasidium theobromae-VSD pathogen on cocoa
title_full_unstemmed Modified culture assay to obtain a diversity of hyphal structures of Ceratobasidium theobromae-VSD pathogen on cocoa
title_sort modified culture assay to obtain a diversity of hyphal structures of ceratobasidium theobromae-vsd pathogen on cocoa
publisher MBI & UNS Solo
publishDate 2021
url https://doaj.org/article/55a99d7734004af6bfe456c83afa012a
work_keys_str_mv AT muhammadjunaid modifiedcultureassaytoobtainadiversityofhyphalstructuresofceratobasidiumtheobromaevsdpathogenoncocoa
AT davidguest modifiedcultureassaytoobtainadiversityofhyphalstructuresofceratobasidiumtheobromaevsdpathogenoncocoa
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