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Syazwan SA, Mohd-Farid A, Yih Lee S, Mohamed R. Comparative analysis of mitochondrial genomes in Ceratocystis fimbriata complex across diverse hosts. Gene 2024; 921:148539. [PMID: 38710292 DOI: 10.1016/j.gene.2024.148539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 04/16/2024] [Accepted: 05/03/2024] [Indexed: 05/08/2024]
Abstract
The decline ofAcacia mangiumWilld. in Malaysia, especially in Sabah since 2010, is primarily due to Ceratocystiswilt and canker disease (CWCD) caused by theCeratocystis fimbriataEllis & Halst. complex. This study was aimed to investigate the mitochondrial genome architecture of two differentC. fimbriatacomplex isolates from Malaysia: one fromA. mangiumin Pahang (FRIM1162) and another fromEucalyptus pellitain Sarawak (FRIM1441). This research employed Next-Generation Sequencing (NGS) to contrast genomes from diverse hosts with nine additional mitochondrial sequences, identifying significant genetic diversity and mutational hotspots in the mitochondrial genome alignment. The mitochondrial genome-based phylogenetic analysis revealed a significant genetic relationship between the studied isolates and theC. fimbriatacomplex in the South American Subclade, indicating that theC. fimbriatacomplex discovered in Malaysia isC. manginecans. The comparative mitochondrial genome demonstrates the adaptability of the complex due to mobile genetic components and genomic rearrangements in the studiedfungal isolates. This research enhances our knowledge of the genetic diversity and evolutionary patterns within theC. fimbriatacomplex, aiding in a deeper understanding of fungal disease development and host adaption processes. The acquired insights are crucial for creating specific management strategies for CWCD, improving the overall understanding of fungal disease evolution and control.
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Affiliation(s)
- Samsuddin Ahmad Syazwan
- Mycology and Pathology Branch, Forest Health and Conservation Programme, Forest Biodiversity Division, Forest Research Institute Malaysia, 52109 Kepong, Selangor, Malaysia; Department of Forest Science and Biodiversity, Faculty of Forestry and Environment, 43400 Serdang, Selangor, Malaysia.
| | - Ahmad Mohd-Farid
- Mycology and Pathology Branch, Forest Health and Conservation Programme, Forest Biodiversity Division, Forest Research Institute Malaysia, 52109 Kepong, Selangor, Malaysia.
| | - Shiou Yih Lee
- Faculty of Health and Life Sciences, INTI International University, 71800 Nilai, Negeri Sembilan, Malaysia.
| | - Rozi Mohamed
- Department of Forest Science and Biodiversity, Faculty of Forestry and Environment, 43400 Serdang, Selangor, Malaysia.
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Indrayadi H, Glen M, Alhusaeri Siregar B, Ratkowsky D, Rimbawanto A, Tjahjono B, Mohammed C. Cross-Inoculation of Commercial Forestry, Amenity, and Horticulture Tree Species with Ceratocystis Isolates Collected from Different Host Species. PLANT DISEASE 2024; 108:1491-1500. [PMID: 38780477 DOI: 10.1094/pdis-02-23-0271-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Ceratocystis manginecans has caused significant losses in forestry productivity in Indonesia and neighboring nations. It also infects horticultural trees, but the host range of individual isolates of C. manginecans is poorly studied. So, this study aimed to better understand the potential host range and evaluate aggressiveness against forestry and fruit tree species of C. manginecans isolated from various tree species in Indonesia. Five C. manginecans isolates, four from different tree species and one from the shot-hole borer Euwallacea perbrevis, were used to inoculate seven fruit and six forest tree species, including E. pellita and Acacia mangium. Many of the inoculated trees produced typical canker disease symptoms, such as rough, swollen, and cracked lesions on the bark, but some trees did not have any external symptoms. Mortality in the most susceptible clone of A. mangium was 40% within 8 weeks. Forest tree species were more susceptible than fruit trees, with the length of xylem discoloration ranging from 0.4 to 101 cm. In fruit trees, the average extent of xylem discoloration was lower, ranging from 0.4 to 20.5 cm; however, mortalities were recorded in two fruit tree species, Citrus microcarpa and Durio zibethinus. Host-isolate interaction was evident; isolate Ep106C from Eucalyptus pellita caused the greatest xylem discoloration in Citrus sp., whereas Hy163C from Hymenaea courbaril was the most damaging in D. zibethinus, Artocarpus heterophyllus, and Mangifera indica. Increasingly globalized food and fiber systems increase risk of disease spread, and the serious threat of C. manginecans incursions into countries where it is not present must be evaluated more thoroughly.
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Affiliation(s)
- Heru Indrayadi
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart, Tasmania 7001, Australia
- Corporate R&D PT Arara Abadi - Sinarmas Forestry, Siak Regency, Riau 28772, Indonesia
| | - Morag Glen
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart, Tasmania 7001, Australia
| | | | - David Ratkowsky
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart, Tasmania 7001, Australia
| | - Anto Rimbawanto
- Research Centre for Plant Conservation, Botanic Gardens and Forestry, National Research and Innovation Agency, Yogyakarta, Indonesia
| | - Budi Tjahjono
- Corporate R&D PT Arara Abadi - Sinarmas Forestry, Siak Regency, Riau 28772, Indonesia
| | - Caroline Mohammed
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart, Tasmania 7001, Australia
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Muslim A, Pratama R, Suwandi S, Hamidson H. Diseases Severity, Genetic Variation, and Pathogenicity of Ceratocystis Wilt on Lansium domesticum in South Sumatra, Indonesia. THE PLANT PATHOLOGY JOURNAL 2022; 38:131-145. [PMID: 35385918 PMCID: PMC9343896 DOI: 10.5423/ppj.oa.12.2021.0182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/30/2022] [Accepted: 02/15/2022] [Indexed: 06/14/2023]
Abstract
Ceratocystis wilt disease has caused significant mortality in duku (Lansium domesticum) since 2014 and has now spread to all districts in South Sumatra, Indonesia. Recently, 16 isolates from duku representing populations from various districts in South Sumatra were isolated. Analysis for the morphological characteristic of the isolate showed that the population has a uniform morphology. Genetic analysis based on internal transcribed spacer (ITS) and β-tubulin sequences verified that the population has being dominated by the ITS5 haplotype of Ceratocystis fimbriata and a new ITS group, the ITS7b haplotype that was localized in Musi Banyuasin. Both haplotypes were highly pathogenic to duku. Inoculation tests on various forest and agroforestry plant hosts showed that both haplotypes were highly pathogenic to Acacia mangium, moderately pathogenic to Acacia carsicarpa, Eucalyptus urophylla, and Melaleuca cajuputi, but weakly pathogenic to Dyera costulata, Hevea brasiliensis, and Alstonia scholaris. Therefore, this pathogen becomes a serious threat to Indonesia's biodiversity due to its ability to infect forest and agroforestry plants, especially the indigenous ones.
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Affiliation(s)
- Ahmad Muslim
- Corresponding author: Phone) +62-711-580059, FAX) +62-711-580276, E-mail)
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Early Monitoring of Health Status of Plantation-Grown Eucalyptus pellita at Large Spatial Scale via Visible Spectrum Imaging of Canopy Foliage Using Unmanned Aerial Vehicles. FORESTS 2021. [DOI: 10.3390/f12101393] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Eucalyptus is a diverse genus from which several species are often deployed for commercial industrial tree plantation due to their desirable wood properties for utilization in both solid wood and fiber products, as well as their growth and productivity in many environments. In this study, a method for monitoring the health status of a 22.78 ha Eucalyptus pellita plantation stand was developed using the red-green-blue channels captured using an unmanned aerial vehicle. The ortho-image was generated, and visual atmospheric resistance index (VARI) indices were developed. Herein, four classification levels of pest and disease were generated using the VARI-green algorithm. The range of normalized VARI-green indices was between −2.0 and 2.0. The results identified seven dead trees (VARI-green index −2 to 0), five trees that were severely infected (VARI-green index 0 to 0.05), 967 trees that were mildly infected (VARI-green index 0.06 to 0.16), and 10,090 trees that were considered healthy (VARI-green index 0.17 to 2.00). The VARI-green indices were verified by manual ground-truthing and by comparison with normalized difference vegetation index which showed a mean correlation of 0.73. This study has shown practical application of aerial survey of a large-scale operational area of industrial tree plantation via low-cost UAV and RGB camera, to analyze VARI-green images in the detection of pest and disease.
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Liu F, Marincowitz S, Chen S, Mbenoun M, Tsopelas P, Soulioti N, Wingfield MJ. Novel species of Huntiella from naturally-occurring forest trees in Greece and South Africa. MycoKeys 2020; 69:33-52. [PMID: 32733148 PMCID: PMC7367892 DOI: 10.3897/mycokeys.69.53205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 06/04/2020] [Indexed: 11/30/2022] Open
Abstract
Huntiella species are wood-infecting, filamentous ascomycetes that occur in fresh wounds on a wide variety of tree species. These fungi are mainly known as saprobes although some have been associated with disease symptoms. Six fungal isolates with typical culture characteristics of Huntiella spp. were collected from wounds on native forest trees in Greece and South Africa. The aim of this study was to identify these isolates, using morphological characters and multigene phylogenies of the rRNA internal transcribed spacer (ITS) region, portions of the β-tubulin (BT1) and translation elongation factor 1α (TEF-1α) genes. The mating strategies of these fungi were also determined through PCR amplification of mating type genes. The study revealed two new species; one from Platanus orientalis in Greece and one from Colophospermum mopane and Senegalia nigrescens in South Africa. These novel taxa have been provided with the names, H. hellenica sp. nov. and H. krugeri sp. nov., respectively. The former species was found to have a homothallic and the latter a heterothallic mating system.
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Affiliation(s)
- FeiFei Liu
- Department of Biochemistry, Genetics and Microbiology (BGM), Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0028, South AfricaUniversity of PretoriaPretoriaSouth Africa
- China Eucalypt Research Centre (CERC), Chinese Academy of Forestry (CAF), ZhanJiang, 524022, GuangDong Province, ChinaChinese Academy of ForestryGuangDongChina
| | - Seonju Marincowitz
- Department of Biochemistry, Genetics and Microbiology (BGM), Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0028, South AfricaUniversity of PretoriaPretoriaSouth Africa
| | - ShuaiFei Chen
- Department of Biochemistry, Genetics and Microbiology (BGM), Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0028, South AfricaUniversity of PretoriaPretoriaSouth Africa
- China Eucalypt Research Centre (CERC), Chinese Academy of Forestry (CAF), ZhanJiang, 524022, GuangDong Province, ChinaChinese Academy of ForestryGuangDongChina
| | - Michael Mbenoun
- Department of Biochemistry, Genetics and Microbiology (BGM), Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0028, South AfricaUniversity of PretoriaPretoriaSouth Africa
| | - Panaghiotis Tsopelas
- Institute of Mediterranean Forest Ecosystems, Terma Alkmanos, 11528 Athens, GreeceInstitute of Mediterranean Forest EcosystemsAthensGreece
| | - Nikoleta Soulioti
- Institute of Mediterranean Forest Ecosystems, Terma Alkmanos, 11528 Athens, GreeceInstitute of Mediterranean Forest EcosystemsAthensGreece
| | - Michael J. Wingfield
- Department of Biochemistry, Genetics and Microbiology (BGM), Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0028, South AfricaUniversity of PretoriaPretoriaSouth Africa
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Marin-Felix Y, Hernández-Restrepo M, Wingfield M, Akulov A, Carnegie A, Cheewangkoon R, Gramaje D, Groenewald J, Guarnaccia V, Halleen F, Lombard L, Luangsa-ard J, Marincowitz S, Moslemi A, Mostert L, Quaedvlieg W, Schumacher R, Spies C, Thangavel R, Taylor P, Wilson A, Wingfield B, Wood A, Crous P. Genera of phytopathogenic fungi: GOPHY 2. Stud Mycol 2019; 92:47-133. [PMID: 29997401 PMCID: PMC6031069 DOI: 10.1016/j.simyco.2018.04.002] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
This paper represents the second contribution in the Genera of Phytopathogenic Fungi (GOPHY) series. The series provides morphological descriptions and information regarding the pathology, distribution, hosts and disease symptoms for the treated genera. In addition, primary and secondary DNA barcodes for the currently accepted species are included. This second paper in the GOPHY series treats 20 genera of phytopathogenic fungi and their relatives including: Allantophomopsiella, Apoharknessia, Cylindrocladiella, Diaporthe, Dichotomophthora, Gaeumannomyces, Harknessia, Huntiella, Macgarvieomyces, Metulocladosporiella, Microdochium, Oculimacula, Paraphoma, Phaeoacremonium, Phyllosticta, Proxypiricularia, Pyricularia, Stenocarpella, Utrechtiana and Wojnowiciella. This study includes the new genus Pyriculariomyces, 20 new species, five new combinations, and six typifications for older names.
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Key Words
- 26 new taxa
- Apoharknessia eucalypti Crous & M.J. Wingf.
- Cylindrocladiella addiensis L. Lombard & Crous
- Cylindrocladiella nauliensis L. Lombard & Crous
- DNA barcodes
- Diaporthe heterophyllae Guarnaccia & Crous
- Diaporthe racemosae A.R. Wood, Guarnaccia & Crous
- Dichotomophthora basellae Hern.-Restr., Cheew. & Crous
- Dichotomophthora brunnea Hern.-Restr. & Crous
- Fungal systematics
- Harknessia bourbonica Crous & M.J. Wingf.
- Harknessia corymbiae Crous & A.J. Carnegie
- Harknessia cupressi Crous & R.K. Schumach.
- Harknessia pilularis Crous & A.J. Carnegie
- Helminthosporium arundinaceum Corda
- Huntiella abstrusa A.M. Wilson, Marinc., M.J. Wingf.
- Macgarvieomyces luzulae (Ondřej) Y. Marín, Akulov & Crous
- Metulocladosporiella chiangmaiensis Y. Marín, Cheew. & Crous
- Metulocladosporiella malaysiana Y. Marín & Crous
- Metulocladosporiella musigena Y. Marín, Cheew. & Crous
- Metulocladosporiella samutensis Y. Marín, Luangsa-ard & Crous
- Microdochium novae-zelandiae Hern.-Restr., Thangavel & Crous
- Oculimacula acuformis (Nirenberg) Y. Marín & Crous
- Phaeoacremonium pravum C.F.J. Spies, L. Mostert & Halleen
- Phomopsis pseudotsugae M. Wilson
- Phyllosticta iridigena Y. Marín & Crous
- Phyllosticta persooniae Y. Marín & Crous
- Pyricularia luzulae Ondřej
- Pyricularia zingiberis Y. Nishik
- Pyriculariomyces Y. Marín, M.J. Wingf. & Crous
- Pyriculariomyces asari (Crous & M.J. Wingf.) Y. Marín, M.J. Wingf. & Crous
- Six new typifications
- Utrechtiana arundinacea (Corda) Crous, Quaedvl. & Y. Marín
- Utrechtiana constantinescui (Melnik & Shabunin) Crous & Y. Marín
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Affiliation(s)
- Y. Marin-Felix
- Westerdijk Fungal Biodiversity Institute, P.O. Box 85167, 3508 AD Utrecht, The Netherlands
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, P. Bag X20, Pretoria 0028, Pretoria, 0002, South Africa
| | - M. Hernández-Restrepo
- Westerdijk Fungal Biodiversity Institute, P.O. Box 85167, 3508 AD Utrecht, The Netherlands
| | - M.J. Wingfield
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, P. Bag X20, Pretoria 0028, Pretoria, 0002, South Africa
| | - A. Akulov
- V.N. Karasin National University of Kharkiv, Svobody sq. 4, Kharkiv 61077, Ukraine
| | - A.J. Carnegie
- Forest Science, NSW Department of Primary Industries, Locked Bag 5123, Parramatta, New South Wales 2124, Australia
| | - R. Cheewangkoon
- Department of Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand
| | - D. Gramaje
- Instituto de Ciencias de la Vid y del Vino, Consejo Superior de Investigaciones Científicas, Universidad de la Rioja, Gobierno de La Rioja, 26071 Logroño, La Rioja, Spain
| | - J.Z. Groenewald
- Westerdijk Fungal Biodiversity Institute, P.O. Box 85167, 3508 AD Utrecht, The Netherlands
| | - V. Guarnaccia
- Westerdijk Fungal Biodiversity Institute, P.O. Box 85167, 3508 AD Utrecht, The Netherlands
| | - F. Halleen
- Department of Plant Pathology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
- Plant Protection Division, ARC Infruitec-Nietvoorbij, Private Bag X5026, Stellenbosch 7599, South Africa
| | - L. Lombard
- Westerdijk Fungal Biodiversity Institute, P.O. Box 85167, 3508 AD Utrecht, The Netherlands
| | - J. Luangsa-ard
- Microbe Interaction and Ecology Laboratory, Biodiversity and Biotechnological Resource Research Unit (BBR), BIOTEC, NSTDA 113, Thailand Science Park Phahonyothin Rd., Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand
| | - S. Marincowitz
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, P. Bag X20, Pretoria 0028, Pretoria, 0002, South Africa
| | - A. Moslemi
- Faculty of Veterinary and Agricultural Sciences, University of Melbourne 3010, Melbourne, Victoria, Australia
| | - L. Mostert
- Department of Plant Pathology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
| | - W. Quaedvlieg
- Naktuinbouw, Sotaweg 22, 2371 GD Roelofarendsveen, the Netherlands
| | | | - C.F.J. Spies
- Department of Plant Pathology, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa
- Plant Protection Division, ARC Infruitec-Nietvoorbij, Private Bag X5026, Stellenbosch 7599, South Africa
| | - R. Thangavel
- Plant Health and Environment Laboratory, Ministry for Primary Industries, P.O. Box 2095, Auckland 1140, New Zealand
| | - P.W.J. Taylor
- Faculty of Veterinary and Agricultural Sciences, University of Melbourne 3010, Melbourne, Victoria, Australia
| | - A.M. Wilson
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, P. Bag X20, Pretoria 0028, Pretoria, 0002, South Africa
| | - B.D. Wingfield
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, P. Bag X20, Pretoria 0028, Pretoria, 0002, South Africa
| | - A.R. Wood
- ARC – Plant Protection Research Institute, Private Bag X5017, Stellenbosch 7599, South Africa
| | - P.W. Crous
- Westerdijk Fungal Biodiversity Institute, P.O. Box 85167, 3508 AD Utrecht, The Netherlands
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, P. Bag X20, Pretoria 0028, Pretoria, 0002, South Africa
- Wageningen University and Research Centre (WUR), Laboratory of Phytopathology, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands
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Simpson MC, Coetzee MPA, van der Nest MA, Wingfield MJ, Wingfield BD. Ceratocystidaceae exhibit high levels of recombination at the mating-type (MAT) locus. Fungal Biol 2018; 122:1184-1191. [PMID: 30449356 DOI: 10.1016/j.funbio.2018.09.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 07/11/2018] [Accepted: 09/12/2018] [Indexed: 12/29/2022]
Abstract
Mating is central to many fungal life cycles and is controlled by genes at the mating-type (MAT) locus. These genes determine whether the fungus will be self-sterile (heterothallic) or self-fertile (homothallic). Species in the ascomycete family Ceratocystidaceae have different mating strategies, making them interesting to consider with regards to their MAT loci. The aim of this study was to compare the composition of the MAT locus flanking regions in 11 species of Ceratocystidaceae representing four genera. Genome assemblies for each species were examined to identify the MAT locus and determine the structure of the flanking regions. Large contigs containing the MAT locus were then functionally annotated and analysed for the presence of transposable elements. Genes typically flanking the MAT locus in sordariomycetes were found to be highly conserved in the Ceratocystidaceae. The different genera in the Ceratocystidaceae displayed little synteny outside of the immediate MAT locus flanking genes. Even though species ofCeratocystis did not show much synteny outside of the immediate MAT locus flanking genes, species of Huntiella and Endoconidiophora were comparatively syntenic. Due to the high number of transposable elements present in Ceratocystis MAT flanking regions, we hypothesise that Ceratocystis species may have undergone recombination in this region.
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Affiliation(s)
- Melissa C Simpson
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, 0002, South Africa.
| | - Martin P A Coetzee
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, 0002, South Africa.
| | - Magriet A van der Nest
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, 0002, South Africa.
| | - Michael J Wingfield
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, 0002, South Africa.
| | - Brenda D Wingfield
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, 0002, South Africa.
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Ophiostomatoid fungi associated with mangroves in South Africa, including Ophiostoma palustre sp. nov. Antonie van Leeuwenhoek 2016; 109:1555-1571. [PMID: 27562287 DOI: 10.1007/s10482-016-0757-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 08/17/2016] [Indexed: 10/21/2022]
Abstract
Mangrove trees are continuously under stress due to environmental and/or anthropogenic pressures, which expose them to attack by pathogens, compromising their survival. Ophiostomatoid fungi cause sap stain and diseases of a wide spectrum of tree species globally. These fungi infect trees through natural, insect, animal and/or human made wounds. During routine surveys of mangrove trees in South Africa, wounds on branches and stems of Avicennia marina were regularly monitored for the presence of ophiostomatoid fungi at ten study sites in the country. The stems of four mangrove species, A. marina, Bruguiera gymnorrhiza, Rhizophora mucronata and Barringtonia racemosa were also wounded and evaluated for the appearance of these fungi. Ophiostomatoid fungi were obtained from the mangrove associate B. racemosa, but not from any of the true mangroves. Analyses of DNA sequence data for the internal transcribed spacer, β-tubulin, calmodulin and translation elongation factor gene regions revealed that the fungi isolated from the wounds on B. racemosa belong to three species in the Ophiostomataceae, including a new taxon described here as Ophiostoma palustre sp. nov. These results suggest that the mangrove associate B. racemosa is more prone to colonization by ophiostomatoid fungi than the true mangroves.
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de Errasti A, de Beer ZW, Rajchenberg M, Coetzee MPA, Wingfield MJ, Roux J. Huntiella decorticans sp. nov. (Ceratocystidaceae) associated with dying Nothofagus in Patagonia. Mycologia 2015; 107:512-21. [PMID: 25661718 DOI: 10.3852/14-175] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Accepted: 12/21/2014] [Indexed: 11/10/2022]
Abstract
During a survey of ophiostomatoid fungi in native forests of southern Argentina, several isolates of Huntiella species were obtained from Nothofagus trees. Sequences of multiple gene regions were used to identify these fungi, and their pathogenicity was tested on N. pumilio and N. dombeyi. Phylogenetic analyses revealed a novel taxon described here as H. decorticans sp. nov. Inoculations on N. dombeyi and N. pumilio in the forest showed that H. decorticans is able to produce localized lesions on healthy Nothofagus trees.
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Affiliation(s)
- A de Errasti
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Centro Forestal CIEFAP, Ruta 259 km 4 Esquel, Chubut, CP 9200, Argentina
| | - Z W de Beer
- Department of Microbiology and Plant Pathology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Private Bag X20, Pretoria, 0028, South Africa
| | - M Rajchenberg
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Centro Forestal CIEFAP, Ruta 259 km 4 Esquel, Chubut, CP 9200, Argentina
| | - M P A Coetzee
- Department of Genetics, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Private Bag X20, Pretoria, 0028, South Africa
| | - M J Wingfield
- Department of Microbiology and Plant Pathology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Private Bag X20, Pretoria, 0028, South Africa
| | - J Roux
- Department of Microbiology and Plant Pathology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Private Bag X20, Pretoria, 0028, South Africa
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Abstract
The genus Ceratocystis was established in 1890 and accommodates many important fungi. These include serious plant pathogens, significant insect symbionts and agents of timber degradation that result in substantial economic losses. Virtually since its type was described from sweet potatoes, the taxonomy of Ceratocystis has been confused and vigorously debated. In recent years, particulary during the last two decades, it has become very obvious that this genus includes a wide diversity of very different fungi. These have been roughly lumped together due to their similar morphological structures that have clearly evolved through convergent evolution linked to an insect-associated ecology. As has been true for many other groups of fungi, the emergence of DNA-based sequence data and associated phylogenetic inferences, have made it possible to robustly support very distinct boundaries defined by morphological characters and ecological differences. In this study, DNA-sequence data for three carefully selected gene regions (60S, LSU, MCM7) were generated for 79 species residing in the aggregate genus Ceratocystis sensu lato and these data were subjected to rigorous phylogenetic analyses. The results made it possible to distinguish seven major groups for which generic names have been chosen and descriptions either provided or emended. The emended genera included Ceratocystis sensu stricto, Chalaropsis, Endoconidiophora, Thielaviopsis, and Ambrosiella, while two new genera, Davidsoniella and Huntiella, were described. In total, 30 new combinations have been made. This major revision of the generic boundaries in the Ceratocystidaceae will simplify future treatments and work with an important group of fungi including distantly related species illogically aggregated under a single name.
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Affiliation(s)
- Z.W. de Beer
- Department of Microbiology and Plant Pathology, University of Pretoria, Pretoria 0002, South Africa
| | - T.A. Duong
- Department of Genetics, Forestry and Agricultural Research Institute (FABI), University of Pretoria, Pretoria 0002, South Africa
| | - I. Barnes
- Department of Genetics, Forestry and Agricultural Research Institute (FABI), University of Pretoria, Pretoria 0002, South Africa
| | - B.D. Wingfield
- Department of Genetics, Forestry and Agricultural Research Institute (FABI), University of Pretoria, Pretoria 0002, South Africa
| | - M.J. Wingfield
- Department of Microbiology and Plant Pathology, University of Pretoria, Pretoria 0002, South Africa
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van der Nest MA, Bihon W, De Vos L, Naidoo K, Roodt D, Rubagotti E, Slippers B, Steenkamp ET, Wilken PM, Wilson A, Wingfield MJ, Wingfield BD. IMA Genome-F 2: Ceratocystis manginecans, Ceratocystis moniliformis, Diplodia sapinea: Draft genome sequences of Diplodia sapinea, Ceratocystis manginecans, and Ceratocystis moniliformis. IMA Fungus 2014; 5:135-40. [PMID: 25083413 PMCID: PMC4107891 DOI: 10.5598/imafungus.2014.05.01.13] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 06/06/2014] [Indexed: 01/15/2023] Open
Abstract
The draft nuclear genomes of Diplodia sapinea, Ceratocystis moniliformis s. str., and C. manginecans are presented. Diplodia sapinea is an important shoot-blight and canker pathogen of Pinus spp., C. moniliformis is a saprobe associated with wounds on a wide range of woody angiosperms and C. manginecans is a serious wilt pathogen of mango and Acacia mangium. The genome size of D. sapinea is estimated at 36.97 Mb and contains 13 020 predicted genes. Ceratocystis moniliformis includes 25.43 Mb and is predicted to encode at least 6 832 genes. This is smaller than that reported for the mango wilt pathogen C. manginecans which is 31.71 Mb and is predicted to encode at least 7 494 genes. The latter is thus more similar to C. fimbriata s.str., the type species of the genus. The genome sequences presented here provide an important resource to resolve issues pertaining to the taxonomy, biology and evolution of these fungi.
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Affiliation(s)
- Magriet A. van der Nest
- Department of Genetics, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, P. Bag X20, Pretoria 0028, South Africa
| | - Wubetu Bihon
- Department of Genetics, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, P. Bag X20, Pretoria 0028, South Africa
- Agricultural Research Council, Vegetable and Ornamental Plant Institute, P. Bag X293, Pretoria 0001, South Africa
| | - Lieschen De Vos
- Department of Genetics, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, P. Bag X20, Pretoria 0028, South Africa
| | - Kershney Naidoo
- Department of Genetics, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, P. Bag X20, Pretoria 0028, South Africa
| | - Danielle Roodt
- Department of Genetics, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, P. Bag X20, Pretoria 0028, South Africa
| | - Enrico Rubagotti
- Genomic Research Institute, University of Pretoria, Pretoria, 0002, South Africa
| | - Bernard Slippers
- Department of Genetics, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, P. Bag X20, Pretoria 0028, South Africa
| | - Emma T. Steenkamp
- Department of Microbiology and Plant Pathology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Private bag x20, Pretoria 0028, South Africa
| | - P. Markus Wilken
- Department of Genetics, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, P. Bag X20, Pretoria 0028, South Africa
| | - Andrea Wilson
- Department of Genetics, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, P. Bag X20, Pretoria 0028, South Africa
| | - Michael J. Wingfield
- Department of Genetics, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, P. Bag X20, Pretoria 0028, South Africa
| | - Brenda D. Wingfield
- Department of Genetics, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, P. Bag X20, Pretoria 0028, South Africa
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Molecular phylogenetic analyses reveal three new Ceratocystis species and provide evidence for geographic differentiation of the genus in Africa. Mycol Prog 2013. [DOI: 10.1007/s11557-013-0907-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Chen S, Van Wyk M, Roux J, Wingfield MJ, Xie Y, Zhou X. Taxonomy and pathogenicity of Ceratocystis species on Eucalyptus trees in South China, including C. chinaeucensis sp. nov. FUNGAL DIVERS 2012. [DOI: 10.1007/s13225-012-0214-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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