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Dominguez JJA, Iwai M, Fujisaki S, Abe Y, Iwadate Y, Fujisaki K. Establishment of an Infection System for Gentian ( Gentiana spp.) Sclerotial Flower Blight Disease. PHYTOPATHOLOGY 2024:PHYTO04240122SC. [PMID: 38870071 DOI: 10.1094/phyto-04-24-0122-sc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
Gentians (Gentiana spp.) as floriculture crops are constantly exposed to several fungal and viral pathogens in the field. Among the fungal diseases afflicting gentian production, gentian sclerotial flower blight caused by Ciborinia gentianae incurs economic losses, as it affects flowers before and after harvest. Currently, preventive measures for this disease are limited, and no resistant cultivars have been reported. This is partly because of the lack of a reliable infection system that could promote research on this plant-fungus interaction. In this study, Gentiana plant tissue culture material was inoculated with C. gentianae culture filtrate. We successfully demonstrated non-ascospore-mediated infection of C. gentianae. Inoculation of individual hyphal structures present in the culture filtrate suggested that sclerotial primordia are the main agents of this infection. Interestingly, our results indicated that primary infection of C. gentianae occurs in petals rather than leaves, which enables systemic infection and therefore mirrors the fungus's infection strategy observed in the field. Moreover, we showed that (i) non-ascospore hyphal structures can also cause disease in flowers grown in the field, and (ii) ascosporic infection can also be observed using the in vitro system, opening possibilities for both practical and basic research aimed to combat gentian sclerotial flower blight disease.
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Affiliation(s)
- John Jewish A Dominguez
- Department of Horticultural Science, Iwate Biotechnology Research Center, Iwate 024-0003, Japan
| | - Mari Iwai
- Department of Horticultural Science, Iwate Biotechnology Research Center, Iwate 024-0003, Japan
| | - Sayaka Fujisaki
- Department of Horticultural Science, Iwate Biotechnology Research Center, Iwate 024-0003, Japan
| | - Yoshiko Abe
- Department of Horticultural Science, Iwate Biotechnology Research Center, Iwate 024-0003, Japan
| | - Yasuya Iwadate
- Plant Pathology and Entomology Section, Iwate Agricultural Research Center, Iwate 024-0003, Japan
| | - Koki Fujisaki
- Department of Horticultural Science, Iwate Biotechnology Research Center, Iwate 024-0003, Japan
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Zhiyuan H, Lin C, Yihan W, Meng D, Yanzi L, Zhenggang X. Reexamination of Aspergillus cristatus phylogeny in dark tea: Characteristics of the mitochondrial genome. Open Life Sci 2024; 19:20220838. [PMID: 38585639 PMCID: PMC10997147 DOI: 10.1515/biol-2022-0838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/18/2024] [Accepted: 02/12/2024] [Indexed: 04/09/2024] Open
Abstract
To enhance our understanding of Aspergillus cristatus, an important functional microorganism, the characteristics of its mitochondrial genome were analyzed and compared with related species. The mitochondrial genome of A. cristatus was determined to be 77,649 bp in length, with 15 protein-coding regions. Notably, its length surpassed that of the other species, primarily attributable to the intron length. Gene order exhibited significant variations, with greater conservation observed in the genus Penicillium compared to Aspergillus. Phylogenetic tree analyses indicated that the genera Aspergillus and Penicillium are closely related but monophyletic. Furthermore, the phylogenetic tree constructed based on protein-coding genes effectively distinguished all strains with high branching confidence. This approach provides a robust reflection of the evolutionary relationship between A. cristatus and its related species, offering potential for the development of molecular markers suitable for Aspergillus and Penicillium.
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Affiliation(s)
- Hu Zhiyuan
- Hunan Provincial Key Lab of Dark Tea and Jin-hua, School of Materials and Chemical Engineering, Hunan City University, Yiyang413000, Hunan, China
| | - Chen Lin
- Hunan Provincial Key Lab of Dark Tea and Jin-hua, School of Materials and Chemical Engineering, Hunan City University, Yiyang413000, Hunan, China
| | - Wang Yihan
- Hunan Provincial Key Lab of Dark Tea and Jin-hua, School of Materials and Chemical Engineering, Hunan City University, Yiyang413000, Hunan, China
| | - Dong Meng
- Hunan Provincial Key Lab of Dark Tea and Jin-hua, School of Materials and Chemical Engineering, Hunan City University, Yiyang413000, Hunan, China
| | - Li Yanzi
- Hunan Provincial Key Lab of Dark Tea and Jin-hua, School of Materials and Chemical Engineering, Hunan City University, Yiyang413000, Hunan, China
| | - Xu Zhenggang
- Hunan Provincial Key Lab of Dark Tea and Jin-hua, School of Materials and Chemical Engineering, Hunan City University, Yiyang413000, Hunan, China
- College of Forestry, Northwest A & F University, Yangling712100, Shaanxi, China
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Saracchi M, Valenti I, Cortesi P, Bulgari D, Kunova A, Pasquali M. Molecular Characterization of Ciborinia camelliae Kohn Shows Intraspecific Variability and Suggests Transcontinental Movement of the Pathogen. Microorganisms 2023; 11:2727. [PMID: 38004739 PMCID: PMC10673376 DOI: 10.3390/microorganisms11112727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/31/2023] [Accepted: 11/03/2023] [Indexed: 11/26/2023] Open
Abstract
Ciborinia camelliae Kohn is the causal agent of camellia flower blight. The fungus infects only the flowers of camellias. C. camelliae isolates obtained from symptomatic samples, collected in 13 different localities worldwide, were characterized by Multi-Locus Sequence Typing (MLST) using the following: (i) a nuclear ribosomal DNA internal transcribed spacer; (ii) subunit 2 of β-tubulin (β-TUB II), (iii) elongation factor 1-α (EF1α); and (iv) glycerol-3-phosphate dehydrogenase (GPDH). The variability of the strains was assessed using a universally primed-polymerase chain reaction (UP-PCR) with six universal primers. Gene sequence comparison showed high similarity among all the European strains and highlighted the diversity of the New Zealand and Chinese representative strains. The profiles obtained by UP-PCR confirmed the significant diversity of extra-European strains and identified subgroups within the European population. The presence of shared genetic profiles obtained from strains isolated in different countries (New Zealand and France) suggests the movement of strains from one location to another, which is probably due to the exchange of infected plant material. Moreover, our study shows the overall high intraspecific variability of C. camelliae, which is likely due to the sexual reproduction of the fungus, suggesting the risk of emergence of new pathotypes adapting to novel camellia varieties.
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Affiliation(s)
| | | | | | - Daniela Bulgari
- Department of Food, Environmental, and Nutritional Sciences, University of Milan, 20133 Milan, Italy; (M.S.); (I.V.); (P.C.); (A.K.); (M.P.)
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Li H, Xu S, Yang M, Zhang W, He J, Duan Z, Ding M, Chen Q. The complete mitochondrial genome of Pseudofabraea citricarpa (Dermateaceae: Helotiales) causing Citrus target spot. Mitochondrial DNA B Resour 2023; 8:1161-1164. [PMID: 38188430 PMCID: PMC10769530 DOI: 10.1080/23802359.2023.2275831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 10/21/2023] [Indexed: 01/09/2024] Open
Abstract
Pseudofabraea citricarpa (Dermateaceae: Helotiales) is known as a significant pathogen causing Citrus target spot disease and results in profound yield loss. In the present study, the complete mitochondrial genome (mitogenome) determined based on next-generation sequencing technology. The circular mitogenome (56,935 bp) comprised 14 conserved protein-coding genes (PCGs), 16 ORFs, two ribosomal RNA genes (rns and rnl), one non-coding RNA gene (rnpB), one ribosomal protein S3 (rps3) and 28 transfer RNA (tRNA) genes. The overall base composition is as follows: 36.08% A, 35.25% T, 13.04% C, and 15.63% G, with a GC content of 28.70%. The phylogenetic analysis shows that P. citricarpa, belonging to Dermateaceae, forms a separate clade and is sister to Sclerotiniaceae. The mitogenome of P. citricarpa reported in this study provides more molecular data for further research on the evolutionary relationships of Helotiales.
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Affiliation(s)
- Hui Li
- Chongqing Three Gorges Academy of Agricultural Sciences, Chongqing, China
- College of Biology and Food Engineering, Chongqing Three Gorges University, Wanzhou, China
- Food Crops Research Institute, Yunnan Academy of Agriculture Sciences, Kunming, China
| | - Songlin Xu
- Chongqing Three Gorges Academy of Agricultural Sciences, Chongqing, China
- College of Biology and Food Engineering, Chongqing Three Gorges University, Wanzhou, China
| | - Mei Yang
- Chongqing Three Gorges Academy of Agricultural Sciences, Chongqing, China
- College of Biology and Food Engineering, Chongqing Three Gorges University, Wanzhou, China
| | - Wenjing Zhang
- Chongqing Three Gorges Academy of Agricultural Sciences, Chongqing, China
- College of Biology and Food Engineering, Chongqing Three Gorges University, Wanzhou, China
| | - Jinhui He
- Plant Protection and Fruit Tree Technology Popularization Station in Wanzhou District of Chongqing, Chongqing, China
| | - Zhengang Duan
- Chongqing Three Gorges Academy of Agricultural Sciences, Chongqing, China
- College of Biology and Food Engineering, Chongqing Three Gorges University, Wanzhou, China
| | - Mingliang Ding
- Food Crops Research Institute, Yunnan Academy of Agriculture Sciences, Kunming, China
- College of Plant Protection, China Agricultural University, Beijing, China
| | - Quan Chen
- Chongqing Three Gorges Academy of Agricultural Sciences, Chongqing, China
- College of Biology and Food Engineering, Chongqing Three Gorges University, Wanzhou, China
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Valenti I, Saracchi M, Degradi L, Kunova A, Cortesi P, Pasquali M. A Genome Resource for Ciborinia camelliae, the Causal Agent of Camellia Flower Blight. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2023; 36:131-133. [PMID: 36513026 DOI: 10.1094/mpmi-09-22-0175-a] [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: 06/17/2023]
Abstract
Ciborinia camelliae Kohn is a camellia pathogen belonging to family Sclerotiniaceae, infecting only flowers of camellias. To better understand the virulence mechanism in this species, the draft genome sequence of the Italian strain of C. camelliae was obtained with a hybrid approach, combining Illumina HiSeq paired reads and MinIon Nanopore long-read sequencing. This combination improved significantly the existing National Center for Biotechnology Information reference genome. The assembly contiguity was implemented decreasing the contig number from 2,604 to 49. The N50 contig size increased from 31,803 to 2,726,972 bp and the completeness of assembly increased from 94.5 to 97.3% according to BUSCO analysis. This work is foundational to allow functional analysis of the infection process in this scarcely known floral pathogen. [Formula: see text] Copyright © 2022 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
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Affiliation(s)
- Irene Valenti
- Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
| | - Marco Saracchi
- Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
| | - Luca Degradi
- Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
| | - Andrea Kunova
- Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
| | - Paolo Cortesi
- Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
| | - Matias Pasquali
- Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
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Degradi L, Tava V, Prigitano A, Esposto MC, Tortorano AM, Saracchi M, Kunova A, Cortesi P, Pasquali M. Exploring Mitogenomes Diversity of Fusarium musae from Banana Fruits and Human Patients. Microorganisms 2022; 10:microorganisms10061115. [PMID: 35744633 PMCID: PMC9227538 DOI: 10.3390/microorganisms10061115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 05/21/2022] [Accepted: 05/23/2022] [Indexed: 12/10/2022] Open
Abstract
Fusarium musae has recently been described as a cross-kingdom pathogen causing post-harvest disease in bananas and systemic and superficial infection in humans. The taxonomic identity of fungal cross-kingdom pathogens is essential for confirming the identification of the species on distant infected hosts. Understanding the level of variability within the species is essential to decipher the population homogeneity infecting human and plant hosts. In order to verify that F. musae strains isolated from fruits and patients are part of a common population and to estimate their overall diversity, we assembled, annotated and explored the diversity of the mitogenomes of 18 F. musae strains obtained from banana fruits and human patients. The mitogenomes showed a high level of similarity among strains with different hosts’ origins, with sizes ranging from 56,493 to 59,256 bp. All contained 27 tRNA genes and 14 protein-coding genes, rps3 protein, and small and large ribosomal subunits (rns and rnl). Variations in the number of endonucleases were detected. A comparison of mitochondrial endonucleases distribution with a diverse set of Fusarium mitogenomes allowed us to specifically discriminate F. musae from its sister species F. verticillioides and the other Fusarium species. Despite the diversity in F. musae mitochondria, strains from bananas and strains from human patients group together, indirectly confirming F. musae as a cross-kingdom pathogen.
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Affiliation(s)
- Luca Degradi
- Department of Food, Environmental and Nutritional Science (DeFENS), University of Milan, Via Celoria 2, 20133 Milan, Italy; (L.D.); (V.T.); (M.S.); (A.K.); (P.C.)
| | - Valeria Tava
- Department of Food, Environmental and Nutritional Science (DeFENS), University of Milan, Via Celoria 2, 20133 Milan, Italy; (L.D.); (V.T.); (M.S.); (A.K.); (P.C.)
| | - Anna Prigitano
- Department of Biomedical Sciences for Health, University of Milan, Via Pascal 36, 20133 Milan, Italy; (A.P.); (M.C.E.); (A.M.T.)
| | - Maria Carmela Esposto
- Department of Biomedical Sciences for Health, University of Milan, Via Pascal 36, 20133 Milan, Italy; (A.P.); (M.C.E.); (A.M.T.)
| | - Anna Maria Tortorano
- Department of Biomedical Sciences for Health, University of Milan, Via Pascal 36, 20133 Milan, Italy; (A.P.); (M.C.E.); (A.M.T.)
| | - Marco Saracchi
- Department of Food, Environmental and Nutritional Science (DeFENS), University of Milan, Via Celoria 2, 20133 Milan, Italy; (L.D.); (V.T.); (M.S.); (A.K.); (P.C.)
| | - Andrea Kunova
- Department of Food, Environmental and Nutritional Science (DeFENS), University of Milan, Via Celoria 2, 20133 Milan, Italy; (L.D.); (V.T.); (M.S.); (A.K.); (P.C.)
| | - Paolo Cortesi
- Department of Food, Environmental and Nutritional Science (DeFENS), University of Milan, Via Celoria 2, 20133 Milan, Italy; (L.D.); (V.T.); (M.S.); (A.K.); (P.C.)
| | - Matias Pasquali
- Department of Food, Environmental and Nutritional Science (DeFENS), University of Milan, Via Celoria 2, 20133 Milan, Italy; (L.D.); (V.T.); (M.S.); (A.K.); (P.C.)
- Correspondence:
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