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Liu D, Luo M, Zhu YX, Zeng ZZ, Hu JJ, Cai MZ, Wang J, Yin WX, Schnabel G, Luo CX. Visual detection of fungicide resistance by combining RPA and CRISPR/Cas12a in peach Brown rot fungus Monilinia fructicola. PEST MANAGEMENT SCIENCE 2024. [PMID: 39096082 DOI: 10.1002/ps.8330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 07/05/2024] [Accepted: 07/09/2024] [Indexed: 08/04/2024]
Abstract
BACKGROUND Peach brown rot caused by Monilinia fructicola severely affects the quality and yield of peach, resulting in large economic losses worldwide. Methyl benzimidazole carbamate (MBC) fungicides and sterol demethylation inhibitor (DMI) fungicides are among the most applied chemical classes used to control the disease but resistance in the target pathogen has made them risky choices. Timely monitoring of resistance to these fungicides in orchards could prevent control failure in practice. RESULTS In the current study, we developed methods based on recombinase polymerase amplification (RPA) and CRISPR/Cas12a systems to detect MBC and DMI resistance based on the E198A mutation in the β-tubulin (MfTub2) gene and the presence of the Mona element in the upstream region of the MfCYP51, respectively. For MBC resistance, RPA primers were designed that artificially incorporated PAM sites to facilitate the CRISPR/Cas12a reaction. Subsequently, specific tcrRNAs were designed based on the E198A mutation site. For the detection of the Mona element, we designed RPA primers M-DMI-F2/M-DMI-R1 that in combination with crRNA1 detected 'Mona' and distinguished resistant from sensitive strains. CONCLUSION Both methods exhibited high sensitivity and specificity, requiring only a simple isothermal device to obtain results within 1 h at 37 °C. The FQ-reporter enabled visualization with a handheld UV or white light flashlight. This method was successfully used with purified DNA from lab cultures and crude DNA from symptomatic fruit tissue, highlighting its potential for on-site detection of resistant strains in orchards. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Duo Liu
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan, China
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Mei Luo
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan, China
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yong-Xu Zhu
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan, China
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Zhe-Zheng Zeng
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan, China
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jia-Jie Hu
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan, China
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Min-Zheng Cai
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan, China
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jing Wang
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan, China
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Wei-Xiao Yin
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Guido Schnabel
- Department of Plant and Environmental Sciences, Clemson University, Clemson, SC, USA
| | - Chao-Xi Luo
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan, China
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
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Díaz D, Zamorano A, García H, Ramos C, Cui W, Carreras C, Beltrán MF, Sagredo B, Pinto M, Fiore N. Development of a Genome-Informed Protocol for Detection of Pseudomonas amygdali pv. morsprunorum Using LAMP and PCR. PLANTS (BASEL, SWITZERLAND) 2023; 12:4119. [PMID: 38140446 PMCID: PMC10747947 DOI: 10.3390/plants12244119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 10/24/2023] [Accepted: 10/27/2023] [Indexed: 12/24/2023]
Abstract
One of the causal agents of bacterial canker is Pseudomonas amygdali pv. morsprunorum-Pam (formerly Pseudomonas syringae pv. morsprunorum). Recently detected in Chile, Pam is known to cause lesions in the aerial parts of the plant, followed by more severe symptoms such as cankers and gummosis in the later stages of the disease. This study presents the design of PCR and LAMP detection methods for the specific and sensitive identification of Pseudomonas amygdali pv. morsprunorum (Pam) from cherry trees. Twelve Pseudomonas isolates were collected, sequenced, and later characterized by Multi-locus Sequence Analysis (MLSA) and Average Nucleotide Identity by blast (ANIb). Three of them (11116B2, S1 Pam, and S2 Pam) were identified as Pseudomonas amygdali pv. morsprunorum and were used to find specific genes through RAST server, by comparing their genome with that of other Pseudomonas, including isolates from other Pam strains. The effector gene HopAU1 was selected for the design of primers to be used for both techniques, evaluating sensitivity and specificity, and the ability to detect Pam directly from plant tissues. While the PCR detection limit was 100 pg of purified bacterial DNA per reaction, the LAMP assays were able to detect up to 1 fg of purified DNA per reaction. Similar results were observed using plant tissues, LAMP being more sensitive than PCR, including when using DNA extracted from infected plant tissues. Both detection methods were tested in the presence of 30 other bacterial genera, with LAMP being more sensitive than PCR.
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Affiliation(s)
- Daniela Díaz
- Laboratorio de Fitovirología, Departamento de Sanidad Vegetal, Facultad de Ciencias Agropecuarias, Universidad de Chile, Avenida Santa Rosa 11315, Santiago 8820808, Chile; (D.D.); (A.Z.); (W.C.); (C.C.)
| | - Alan Zamorano
- Laboratorio de Fitovirología, Departamento de Sanidad Vegetal, Facultad de Ciencias Agropecuarias, Universidad de Chile, Avenida Santa Rosa 11315, Santiago 8820808, Chile; (D.D.); (A.Z.); (W.C.); (C.C.)
| | - Héctor García
- Laboratorio Diagnofruit, Avenida Sucre 1521, Santiago 7770273, Chile; (H.G.); (C.R.)
| | - Cecilia Ramos
- Laboratorio Diagnofruit, Avenida Sucre 1521, Santiago 7770273, Chile; (H.G.); (C.R.)
- Núcleo de Investigaciones Aplicadas en Ciencias Veterinarias y Agronómicas, Facultad de Medicina Veterinaria y Agronomía, Universidad de las Américas, Campus Providencia, Manuel Montt 948, Santiago 7500975, Chile
| | - Weier Cui
- Laboratorio de Fitovirología, Departamento de Sanidad Vegetal, Facultad de Ciencias Agropecuarias, Universidad de Chile, Avenida Santa Rosa 11315, Santiago 8820808, Chile; (D.D.); (A.Z.); (W.C.); (C.C.)
| | - Claudia Carreras
- Laboratorio de Fitovirología, Departamento de Sanidad Vegetal, Facultad de Ciencias Agropecuarias, Universidad de Chile, Avenida Santa Rosa 11315, Santiago 8820808, Chile; (D.D.); (A.Z.); (W.C.); (C.C.)
| | - María Francisca Beltrán
- Instituto de Investigaciones Agropecuarias, INIA Rayentué, Avda. Salamanca s/n, Rengo 2940000, Chile; (M.F.B.); (B.S.)
| | - Boris Sagredo
- Instituto de Investigaciones Agropecuarias, INIA Rayentué, Avda. Salamanca s/n, Rengo 2940000, Chile; (M.F.B.); (B.S.)
| | - Manuel Pinto
- Instituto de Ciencias Agroalimentarias Animales y Ambientales (ICA3), Universidad de O’Higgins, Campus Colchagua, Ruta I-90 S/N, San Fernando 3072590, Chile;
| | - Nicola Fiore
- Laboratorio de Fitovirología, Departamento de Sanidad Vegetal, Facultad de Ciencias Agropecuarias, Universidad de Chile, Avenida Santa Rosa 11315, Santiago 8820808, Chile; (D.D.); (A.Z.); (W.C.); (C.C.)
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Hu JJ, Liu D, Cai MZ, Zhou Y, Yin WX, Luo CX. One-Pot Assay for Rapid Detection of Benzimidazole Resistance in Venturia carpophila by Combining RPA and CRISPR/Cas12a. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:1381-1390. [PMID: 36624936 DOI: 10.1021/acs.jafc.2c06549] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
High resistance to benzimidazole fungicides in Venturia carpophila is caused by the point mutation E198K of the β-tubulin (TUB2) gene. Traditional methods for detection of fungicide resistance are time-consuming, which are routinely based on tedious operation, reliance on expensive equipment, and specially trained people. Therefore, it is important to establish efficient methods for field detection of benzimidazole resistance in V. carpophila to make suitable management strategies and ensure food safety. Based on recombinase polymerase amplification (RPA) combined with CRISPR/Cas12a, a rapid one-pot assay ORCas12a-BRVc (one-pot RPA-CRISPR/Cas12 platform) was established for the detection of benzimidazole resistance in V. carpophila. The ORCas12a-BRVc assay enabled one-pot detection by adding components at the bottom and wall of the tube separately, solving the problems of aerosol contamination and decreased sensitivity caused by competing DNA substrates between Cas12a cleavage and RPA amplification. The ORCas12a-BRVc assay could accomplish the detection with a minimum of 7.82 × 103 fg μL-1 V. carpophila genomic DNA in 45 min at 37 °C. Meanwhile, this assay showed excellent specificity due to the specific recognition ability of the Cas12a-crRNA complex. Further, we combined a method that could rapidly extract DNA from V. carpophila within 2 min with the ORCas12a-BRVc to achieve more rapid and simple detection of V. carpophila with benzimidazole resistance in fields. The ORCas12a-BRVc assay has the advantages of simplicity, rapidity, high sensitivity, high specificity, and ease of operation without the need for precision instruments and the need to isolate and culture pathogens. This assay is the first application of the one-pot platform based on the combination of RPA and CRISPR/Cas12a in fungicide resistance detection and can be used for monitoring of resistant populations in fields, providing guidance on making suitable management strategies for peach scab.
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Affiliation(s)
- Jia-Jie Hu
- National Key Laboratory for Germplasm Innovation and Utilization for Fruit and Vegetable Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Duo Liu
- National Key Laboratory for Germplasm Innovation and Utilization for Fruit and Vegetable Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Min-Zheng Cai
- National Key Laboratory for Germplasm Innovation and Utilization for Fruit and Vegetable Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Yang Zhou
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan 430062, China
| | - Wei-Xiao Yin
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Chao-Xi Luo
- National Key Laboratory for Germplasm Innovation and Utilization for Fruit and Vegetable Horticultural Crops, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
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Zhou Y, Chaisiri C, Luo M, Fan F, Wang YF, Yin LF, Yin WX, Luo CX. Genetic diversity of Venturia carpophila populations from different hosts and geographic regions in China. Front Microbiol 2022; 13:985691. [PMID: 36590415 PMCID: PMC9800423 DOI: 10.3389/fmicb.2022.985691] [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: 07/04/2022] [Accepted: 12/01/2022] [Indexed: 12/23/2022] Open
Abstract
Venturia carpophila, the causal agent of scab disease of peach, mume, and apricot, is widely distributed around the world. Scab of stone fruits is an important disease in China. However, little is known about the population biology and genetic diversity of the V. carpophila. To better understand the genetic diversity and population structure of V. carpophila, 186 single-spore isolates from different hosts and geographic regions were obtained and analyzed by using 31 simple sequence repeat (SSR) markers. This included 156 isolates from peach spanning 14 provinces, 15 isolates from mume and 15 isolates from apricot in Huazhong Agricultural University (HZAU). Diversity analysis with SSR markers showed a low incidence of polymorphisms within mume isolates (32.59% of markers), but a higher incidence of polymorphisms within peach isolates (42.96%) and apricot isolates (57.04%). Within peach isolates, Nei's average gene diversity ranged from 0.07 for Hebei population to 0.18 for Hubei population. AMOVA analysis revealed that 13% of the observed genetic diversity was partitioned among the geographic populations, while 40% of the observed genetic diversity was partitioned among the host populations. Other analyses (PCoA, STRUCTURE, DAPC, MSN, and UPGMA) indicated that the Chinese V. carpophila populations could be clustered into three distinct genetic groups, which correspond to the host boundaries of peach, mume and apricot. The genetic identity of V. carpophila isolates throughout the range is dependent on hosts, but not geographic regions.
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Affiliation(s)
- Yang Zhou
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Wuhan, China,Key Lab of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China,College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Chingchai Chaisiri
- Key Lab of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China,College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Mei Luo
- Key Lab of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China,College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Fei Fan
- Key Lab of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China,College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yu-Fu Wang
- Key Lab of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China,College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Liang-Fen Yin
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China,Experimental Teaching Center of Crop Science, Huazhong Agricultural University, Wuhan, China
| | - Wei-Xiao Yin
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China,Hubei Key Laboratory of Plant Pathology, Huazhong Agricultural University, Wuhan, China
| | - Chao-Xi Luo
- Key Lab of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China,College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China,Hubei Key Laboratory of Plant Pathology, Huazhong Agricultural University, Wuhan, China,*Correspondence: Chao-Xi Luo,
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Zhou Y, Zhang L, Ji CY, Chaisiri C, Yin LF, Yin WX, Luo CX. Cytological Observation of the Infectious Process of Venturia carpophila on Peach Leaves. PLANT DISEASE 2022; 106:79-86. [PMID: 34433321 DOI: 10.1094/pdis-03-21-0556-re] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Peach scab caused by Venturia carpophila is one of the most destructive fungal diseases of peach worldwide, and it seriously affects peach production. Until now,the infectious process and pathogenesis of V. carpophila on peach have remained unclear. Here we present the infection behavior of V. carpophila at the ultrastructural and cytological levels in peach leaves with combined microscopic investigations (i.e., light microscopy, confocal laser scanning microscopy, scanning electron microscopy, and transmission electron microscopy). V. carpophila germinated at the tip of conidia and produced short germ tubes on peach leaf surfaces at 2 days post inoculation (dpi). At 3 dpi, swollen tips of germ tubes differentiated into appressoria. At 5 dpi, penetration pegs produced by appressoria broke through the cuticle layer and then differentiated into thick subcuticular hyphae in the pectin layer of the epidermal cell walls. At 10 dpi, the subcuticular hyphae extensively colonized in the pectin layer. The primary hyphae ramified into secondary hyphae and proliferated along with the incubation. At 15 dpi, the subcuticular hyphae divided laterally to form stromata between the cuticle layer and the cellulose layer of the epidermal cells. At 30 dpi, conidiophores developed from the subcuticular stromata. Finally, abundant conidiophores and new conidia appeared on leaf surfaces at 40 dpi. These results provide useful information for further a understanding of V. carpophila pathogenesis.
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Affiliation(s)
- Yang Zhou
- Key Lab of Horticultural Plant Biology, Ministry of Education and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Lei Zhang
- Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China
| | - Chuan-Ya Ji
- Key Lab of Horticultural Plant Biology, Ministry of Education and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Chingchai Chaisiri
- Key Lab of Horticultural Plant Biology, Ministry of Education and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Liang-Fen Yin
- Experimental Teaching Center of Crop Science and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Wei-Xiao Yin
- Hubei Key Lab of Plant Pathology, and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Chao-Xi Luo
- Key Lab of Horticultural Plant Biology, Ministry of Education and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Key Lab of Plant Pathology, and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
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Usman HM, Tan Q, Fan F, Karim MM, Yin WX, Zhu FX, Luo CX. Sensitivity of Colletotrichum nymphaeae to Six Fungicides and Characterization of Fludioxonil-Resistant Isolates in China. PLANT DISEASE 2022; 106:165-173. [PMID: 34406787 DOI: 10.1094/pdis-05-21-0993-re] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Colletotrichum nymphaeae is the dominant species causing anthracnose disease of peach in China. In this study, 140 isolates of C. nymphaeae were assessed for their sensitivity to six fungicides. It was found that C. nymphaeae was highly resistant to carbendazim, procymidone, and boscalid but sensitive to pyraclostrobin and prochloraz. For fludioxonil, the fungus exhibited differential sensitivities (i.e., approximately 14% of isolates were resistant to fludioxonil and the resistance was stable). Fludioxonil-resistant isolates had a mean EC50 value of 2.2380 µg/ml, whereas the mean EC50 value was 0.0194 µg/ml in fludioxonil-sensitive isolates. The mean EC50 values of C. nymphaeae for pyraclostrobin and prochloraz were 0.0083 µg/ml and 0.002 µg/ml, respectively. No cross-resistance was observed between fungicides from different groups. Mycelial growth rate, control efficacy, and osmotic stress responses were significantly different (P < 0.05) between fludioxonil-sensitive (FluS) and -resistant (FluR) isolates, but no significant difference was observed (P > 0.05) in virulence and sporulation between FluS and FluR isolates. No mutation was detected in coding regions of the CnOs-1, Cal, Hk1, Hog1, TPI, and Mrr1 genes. Interestingly, with fludioxonil treatment, the expression of ABC transporter gene atrB was significantly overexpressed in some resistant isolates. However, overexpression of the atrB gene was not detected in one moderately and one highly resistant isolate, indicating that other unknown mechanisms may be involved. Current findings uncovered several effective chemicals and provided the foundation for designing management strategies to practically control peach anthracnose with the most effective demethylation inhibitor fungicides and quinone outside inhibitor fungicides.
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Affiliation(s)
- Hafiz Muhammad Usman
- Key Lab of Horticultural Plant Biology, Ministry of Education and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Qin Tan
- Key Lab of Horticultural Plant Biology, Ministry of Education and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Fei Fan
- Key Lab of Horticultural Plant Biology, Ministry of Education and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Mohammad Mazharul Karim
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Plant Pathology Division, Bangladesh Agricultural Research Institute, Gazipur 1701, Bangladesh
| | - Wei-Xiao Yin
- Hubei Key Lab of Plant Pathology and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Fu-Xing Zhu
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Chao-Xi Luo
- Key Lab of Horticultural Plant Biology, Ministry of Education and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Key Lab of Plant Pathology and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
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Zhou Y, Fan F, Chaisiri C, Zhu YT, Zhao Y, Luo MK, Li XC, Yin LF, Yin WX, Luo CX. Sensitivity of Venturia carpophila from China to Five Fungicides and Characterization of Carbendazim-Resistant Isolates. PLANT DISEASE 2021; 105:3990-3997. [PMID: 34253040 DOI: 10.1094/pdis-04-21-0694-re] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Peach scab is a fungal disease caused by Venturia carpophila that can significantly reduce peach yield and quality. Fungicide application is the main control measure for peach scab worldwide. To better understand the fungicide-resistance status and devise suitable management strategies, the sensitivity of 135 single-spore V. carpophila isolates to the commonly used fungicides carbendazim, iprodione, propiconazole, azoxystrobin, and boscalid were determined using a microtiter plate test method. Results showed that the mean effective concentrations to cause inhibitions by 50% (EC50) of tested isolates to iprodione, propiconazole, azoxystrobin, and boscalid were 16.287, 0.165, 0.570, and 0.136 µg/ml, respectively. The EC50 values of V. carpophila isolates to four fungicides displayed unimodal frequency distributions, indicating no resistance occurred to these fungicides. On the contrary, bimodal frequency distribution was observed for carbendazim, indicating that V. carpophila developed resistance to carbendazim. Resistance was widely detected from all 14 provinces studied. Molecular analysis showed that the point mutation E198K of the TUB2 gene determined high resistance, whereas E198G conferred moderate resistance. Moderate and high resistances were stable, and the resistant isolates did not show significant fitness penalties. On the contrary, some resistant isolates showed better competitiveness under certain stresses. This is the first report to detect the sensitivity of V. carpophila to fungicides, which enables future monitoring of fungicide resistance and provides basic information to allow the design of suitable peach scab management strategies.
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Affiliation(s)
- Yang Zhou
- Key Lab of Horticultural Plant Biology, Ministry of Education and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Fei Fan
- Key Lab of Horticultural Plant Biology, Ministry of Education and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Chingchai Chaisiri
- Key Lab of Horticultural Plant Biology, Ministry of Education and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Yi-Ting Zhu
- Key Lab of Horticultural Plant Biology, Ministry of Education and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Yang Zhao
- Key Lab of Horticultural Plant Biology, Ministry of Education and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Meng-Ke Luo
- Key Lab of Horticultural Plant Biology, Ministry of Education and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Xi-Cheng Li
- Key Lab of Horticultural Plant Biology, Ministry of Education and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Liang-Fen Yin
- Experimental Teaching Center of Crop Science and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Wei-Xiao Yin
- Hubei Key Lab of Plant Pathology and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Chao-Xi Luo
- Key Lab of Horticultural Plant Biology, Ministry of Education and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
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Usman HM, Tan Q, Karim MM, Adnan M, Yin WX, Zhu FX, Luo CX. Sensitivity of Colletotrichum fructicola and Colletotrichum siamense of Peach in China to Multiple Classes of Fungicides and Characterization of Pyraclostrobin-Resistant Isolates. PLANT DISEASE 2021; 105:3459-3465. [PMID: 34132595 DOI: 10.1094/pdis-04-21-0693-re] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Anthracnose, mainly caused by Colletotrichum gloeosporioides species complex including Colletotrichum fructicola and Colletotrichum siamense, is a devastating disease of peach. Chemical control has been widely used for years, but management failures have increased with the commonly used fungicides. Therefore, screening of sensitivity of Colletotrichum spp. to fungicides with different modes of action is needed to make proper management strategies for peach anthracnose. In this study, the sensitivity of 80 isolates of C. fructicola and C. siamense was screened for pyraclostrobin, procymidone, prochloraz, and fludioxonil based on mycelial growth inhibition at discriminatory doses. Results showed that C. fructicola and C. siamense isolates were highly resistant to procymidone and fludioxonil with 100% resistance frequencies to both fungicides, but sensitive to prochloraz, i.e., no resistant isolates were found. For pyraclostrobin, 74% of C. fructicola isolates showed high resistance, 26% showed low resistance, and all of the C. siamense isolates showed low resistance. No positive cross-resistance was observed between pyraclostrobin and azoxystrobin even when they are members of the same quinone outside inhibitor (QoI) fungicide group or between pyraclostrobin and non-QoIs. Resistant isolates to QoI fungicides were evaluated for the fitness penalty. Results showed that no significant differences except for the mycelial growth rates that were detected between high- and low-resistance isolates of C. fructicola. Molecular characterization of the Cyt b gene revealed that the G143A point mutation was the determinant of the high resistance in C. fructicola. This study demonstrated the resistance status of C. fructicola and C. siamense to different fungicides and briefly discussed implications of that resistance. Demethylation inhibitor fungicides were found to be the best option among the different chemicals studied here, to control peach anthracnose in China.
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Affiliation(s)
- Hafiz Muhammad Usman
- Key Laboratory of Horticultural Plant Biology, Ministry of Education and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Qin Tan
- Key Laboratory of Horticultural Plant Biology, Ministry of Education and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Mohammad Mazharul Karim
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Plant Pathology Division, Bangladesh Agricultural Research Institute, Gazipur 1701, Bangladesh
| | - Muhammad Adnan
- Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou 510642, China
| | - Wei-Xiao Yin
- Hubei Key Laboratory of Plant Pathology and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Fu-Xing Zhu
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Chao-Xi Luo
- Key Laboratory of Horticultural Plant Biology, Ministry of Education and College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
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Zhou Y, Zhang L, Fan F, Wang ZQ, Huang Y, Yin LF, Yin WX, Luo CX. Genome Sequence of Venturia carpophila, the Causal Agent of Peach Scab. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2021; 34:852-856. [PMID: 33656373 DOI: 10.1094/mpmi-11-20-0321-a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Venturia carpophila, the causal agent of scab disease on peach, is a host-specific fungus that is widely distributed around the world, including China. In our previous study, samples were collected from 14 provinces in China, and 750 isolates were obtained by single-spore separation. Here, we reported the first highly contiguous whole-genome sequence (35.87 Mb) of the V. carpophila isolate ZJHZ1-1-1, which included 33 contigs with N50 value of 2.01 Mb and maximum contig length of 3.39 Mb. The high-quality genome sequence and annotation resource will be useful to study the fungal biology, pathogen-host interaction, fungicide resistance, characterization of important genes, population genetic diversity, and development of molecular markers for genotyping and species identification.[Formula: see text] Copyright © 2021 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)
- Yang Zhou
- Key Lab of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Lei Zhang
- Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China
| | - Fei Fan
- Key Lab of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Zuo-Qian Wang
- Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Science, Wuhan 430064, China
| | - Yue Huang
- Key Lab of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
| | - Liang-Fen Yin
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Wei-Xiao Yin
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Chao-Xi Luo
- Key Lab of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
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