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Bustamante MI, Todd C, Elfar K, Hamid MI, Garcia JF, Cantu D, Rolshausen PE, Eskalen A. Identification and Pathogenicity of Fusarium Species Associated with Young Vine Decline in California. PLANT DISEASE 2024; 108:1053-1061. [PMID: 38085973 DOI: 10.1094/pdis-07-23-1362-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: 04/21/2024]
Abstract
Grapevine trunk diseases are caused by a broad diversity of fungal taxa that have serious impacts on the worldwide viticulture industry due to significant reductions in vineyards yield and lifespan. Field surveys carried out from 2018 to 2022 in California nurseries and young vineyards revealed a high incidence of Fusarium. Since Fusarium species are important pathogens of other perennial crops, the present study aimed to identify and determine the pathogenicity of the Fusarium species on grapevines. Morphology of the fungal colonies coupled with multilocus phylogenetic analyses using nucleotide sequences of the translation elongation factor 1-alpha (tef1) and the RNA polymerase II second largest subunit (rpb2) genes revealed the occurrence of 10 species clustering in six species complexes, namely F. fujikuroi (FFSC), F. oxysporum (FOSC), F. solani (FSSC), F. sambucinum (FSAMSC), F. incarnatum-equiseti (FIESC), and F. tricinctum (FTSC) species complexes. The species F. annulatum (FFSC) was the most prevalent in samples from both symptomatic young vineyards (73.5% incidence) and nursery propagation material (62.5% incidence). Pathogenicity of the 10 most frequent species was confirmed by fulfilling Koch's postulates on living woody tissue of 1103 Paulsen rootstocks. Our results suggest that Fusarium spp. are involved in the development of young vine decline, probably as opportunistic pathogens when grapevines are under stress conditions.
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Affiliation(s)
| | - Colin Todd
- Department of Microbiology and Plant Pathology, University of California, Riverside, CA 92521
| | - Karina Elfar
- Department of Plant Pathology, University of California, Davis, CA 95616
| | - M Imran Hamid
- Department of Botany and Plant Sciences, University of California, Riverside, CA 92521
| | - Jadran F Garcia
- Department of Viticulture and Enology, University of California, Davis, CA, 95616
| | - Dario Cantu
- Department of Viticulture and Enology, University of California, Davis, CA, 95616
| | - Philippe E Rolshausen
- Department of Botany and Plant Sciences, University of California, Riverside, CA 92521
| | - Akif Eskalen
- Department of Plant Pathology, University of California, Davis, CA 95616
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Zhao J, Cheng Y, Jiang N, Qiao G, Qin W. Rhizosphere-associated soil microbiome variability in Verticillium wilt-affected Cotinus coggygria. Front Microbiol 2024; 14:1279096. [PMID: 38249458 PMCID: PMC10797040 DOI: 10.3389/fmicb.2023.1279096] [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: 08/17/2023] [Accepted: 12/07/2023] [Indexed: 01/23/2024] Open
Abstract
Introduction Verticillium wilt is the most devastating soil-borne disease affecting Cotinus coggygria in the progress of urban landscape construction in China. Methods To assess the variability of the rhizosphere-associated soil microbiome in response to Verticillium wilt occurrence, we investigated the microbial diversity, taxonomic composition, biomarker species, and co-occurrence network of the rhizosphere-associated soil in Verticillium wilt-affected C. coggygria using Illumina sequencing. Results The alpha diversity indices of the rhizosphere bacteria in Verticillium wilt-affected plants showed no significant variability compared with those in healthy plants, except for a moderate increase in the Shannon and Invsimpson indices, while the fungal alpha diversity indices were significantly decreased. The abundance of certain dominant or crucial microbial taxa, such as Arthrobacter, Bacillus, Streptomyces, and Trichoderma, displayed significant variations among different soil samples. The bacterial and fungal community structures exhibited distinct variability, as evidenced by the Bray-Curtis dissimilarity matrices. Co-occurrence networks unveiled intricate interactions within the microbial community of Verticillium wilt-affected C. coggygria, with greater edge numbers and higher network density. The phenomenon was more evident in the fungal community, showing increased positive interaction, which may be associated with the aggravation of Verticillium wilt with the aid of Fusarium. The proportions of bacteria involved in membrane transport and second metabolite biosynthesis functions were significantly enriched in the diseased rhizosphere soil samples. Discussion These findings suggested that healthy C. coggygria harbored an obviously higher abundance of beneficial microbial consortia, such as Bacillus, while Verticillium wilt-affected plants may recruit antagonistic members such as Streptomyces in response to Verticillium dahliae infection. This study provides a theoretical basis for understanding the soil micro-ecological mechanism of Verticillium wilt occurrence, which may be helpful in the prevention and control of the disease in C. coggygria from the microbiome perspective.
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Affiliation(s)
- Juan Zhao
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North China, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Yanli Cheng
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- College of Life Sciences, Yangtze University, Jingzhou, Hubei, China
| | - Nan Jiang
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China
| | - Guanghang Qiao
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North China, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Wentao Qin
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North China, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
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Testempasis SI, Markakis EA, Tavlaki GI, Soultatos SK, Tsoukas C, Gkizi D, Tzima AK, Paplomatas E, Karaoglanidis GS. Grapevine Trunk Diseases in Greece: Disease Incidence and Fungi Involved in Discrete Geographical Zones and Varieties. J Fungi (Basel) 2023; 10:2. [PMID: 38276018 PMCID: PMC10817465 DOI: 10.3390/jof10010002] [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: 11/21/2023] [Revised: 12/15/2023] [Accepted: 12/18/2023] [Indexed: 01/27/2024] Open
Abstract
A three-year survey was conducted to estimate the incidence of grapevine trunk diseases (GTDs) in Greece and identify fungi associated with the disease complex. In total, 310 vineyards in different geographical regions in northern, central, and southern Greece were surveyed, and 533 fungal strains were isolated from diseased vines. Morphological, physiological and molecular (5.8S rRNA gene-ITS sequencing) analyses revealed that isolates belonged to 35 distinct fungal genera, including well-known (e.g., Botryosphaeria sp., Diaporthe spp., Eutypa sp., Diplodia sp., Fomitiporia sp., Phaeoacremonium spp., Phaeomoniella sp.) and lesser-known (e.g., Neosetophoma sp., Seimatosporium sp., Didymosphaeria sp., Kalmusia sp.) grapevine wood inhabitants. The GTDs-inducing population structure differed significantly among the discrete geographical zones. Phaeomoniella chlamydospora (26.62%, n = 70), Diaporthe spp. (18.25%, n = 48) and F. mediterranea (10.27%, n = 27) were the most prevalent in Heraklion, whereas D. seriata, Alternaria spp., P. chlamydospora and Fusarium spp. were predominant in Nemea (central Greece). In Amyntaio and Kavala (northern Greece), D. seriata was the most frequently isolated species (>50% frequency). Multi-genes (rDNA-ITS, LSU, tef1-α, tub2, act) sequencing of selected isolates, followed by pathogenicity tests, revealed that Neosetophoma italica, Seimatosporium vitis, Didymosphaeria variabile and Kalmusia variispora caused wood infection, with the former being the most virulent. To the best of our knowledge, this is the first report of N. italica associated with GTDs worldwide. This is also the first record of K. variispora, S. vitis and D. variabile associated with wood infection of grapevine in Greece. The potential associations of disease indices with vine age, cultivar, GTD-associated population structure and the prevailing meteorological conditions in different viticultural zones in Greece are presented and discussed.
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Affiliation(s)
- Stefanos I. Testempasis
- Laboratory of Plant Pathology, School of Agriculture, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (S.I.T.); (G.S.K.)
| | - Emmanouil A. Markakis
- Laboratory of Mycology, Department of Viticulture, Vegetable Crops, Floriculture and Plant Protection, Institute of Olive Tree, Subtropical Crops and Viticulture, Hellenic Agricultural Organization—DIMITRA, 32 Kastorias Street, Mesa Katsabas, 71307 Heraklion, Greece; (G.I.T.); (S.K.S.)
- Laboratory of Plant Pathology, Department of Agriculture, School of Agricultural Sciences, Hellenic Mediterranean University, Stavromenos, 71004 Heraklion, Greece
| | - Georgia I. Tavlaki
- Laboratory of Mycology, Department of Viticulture, Vegetable Crops, Floriculture and Plant Protection, Institute of Olive Tree, Subtropical Crops and Viticulture, Hellenic Agricultural Organization—DIMITRA, 32 Kastorias Street, Mesa Katsabas, 71307 Heraklion, Greece; (G.I.T.); (S.K.S.)
| | - Stefanos K. Soultatos
- Laboratory of Mycology, Department of Viticulture, Vegetable Crops, Floriculture and Plant Protection, Institute of Olive Tree, Subtropical Crops and Viticulture, Hellenic Agricultural Organization—DIMITRA, 32 Kastorias Street, Mesa Katsabas, 71307 Heraklion, Greece; (G.I.T.); (S.K.S.)
- Laboratory of Plant Pathology, Department of Agriculture, School of Agricultural Sciences, Hellenic Mediterranean University, Stavromenos, 71004 Heraklion, Greece
| | - Christos Tsoukas
- Laboratory of Plant Pathology, Department of Crop Science, School of Plant Sciences, Agricultural University of Athens, Iera Odos 75, Votanikos, 11855 Athens, Greece; (C.T.); (A.K.T.); (E.P.)
| | - Danai Gkizi
- Department of Wine, Vine and Beverage Sciences, University of West Attica, Ag. Spyridonos 28, 12243 Athens, Greece;
| | - Aliki K. Tzima
- Laboratory of Plant Pathology, Department of Crop Science, School of Plant Sciences, Agricultural University of Athens, Iera Odos 75, Votanikos, 11855 Athens, Greece; (C.T.); (A.K.T.); (E.P.)
| | - Epameinondas Paplomatas
- Laboratory of Plant Pathology, Department of Crop Science, School of Plant Sciences, Agricultural University of Athens, Iera Odos 75, Votanikos, 11855 Athens, Greece; (C.T.); (A.K.T.); (E.P.)
| | - Georgios S. Karaoglanidis
- Laboratory of Plant Pathology, School of Agriculture, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (S.I.T.); (G.S.K.)
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