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Tiwari RK, Lal MK, Kumar R, Mangal V, Kumar A, Kumar R, Sharma S, Sagar V, Singh B. Salt stress influences the proliferation of Fusarium solani and enhances the severity of wilt disease in potato. Heliyon 2024; 10:e26718. [PMID: 38434015 PMCID: PMC10906416 DOI: 10.1016/j.heliyon.2024.e26718] [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: 06/01/2023] [Revised: 02/13/2024] [Accepted: 02/19/2024] [Indexed: 03/05/2024] Open
Abstract
Soil salinity has emerged as a critical abiotic stress in potato production, whereas wilt disease, caused by Fusarium solani, is the significant biotic stress. An experiment was performed to decipher the occurrence of wilt incidence by F. solani FJ1 under the influence of salinity in both in vitroand pot culture conditions. High salt concentration negatively influenced root and shoot development in the variety "Kufri Jyoti" but positively affected the mycelial growth and sporulation behaviours of F. solani FJ1. There was abundant whitish mycelial growth with enhanced biomass and high sporulation (microconidia production) in F. solani FJ1 cultured on salt-supplemented media. Moreover, under high salinity conditions (EC 2-8 dS m-1), severe wilting and rotting of vascular bundles were observed in plants artificially inoculated with F. solani FJ1. The mortality rate of potato plants was significantly higher under individual and combined stresses as compared to control. The wilt index of individual and combined stressed plants was also substantially higher compared to the control. Additionally, compared to the control, there was a significant decrease in total chlorophyll content and membrane stability index of the leaves under combined stress. However, the total phenols were increased under stress conditions. The total sugar content of potato plants decreased in infected plants, but increased when exposed to salt stress or a combination of salt stress and pathogen infection. F. solani infection also increased the activity of peroxidase (POX) and decreased the activity of phenylalanine ammonia-lyase (PAL) and catalase (CAT). These results suggest that Fusarium wilt and dry rot will be a more severe disease for potato cultivation in saline soils.
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Affiliation(s)
- Rahul Kumar Tiwari
- Division of Plant Protection, ICAR-Central Potato Research Institute, Shimla, HP 171001, India
- Division of Crop Protection, ICAR-Indian Institute of Sugarcane Research, Lucknow, Uttar Pradesh 226002, India
| | - Milan Kumar Lal
- Division of CPB&PHT, ICAR-Central Potato Research Institute, Shimla, HP 171001, India
- Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, Cuttack 753006, Odisha, India
| | - Ravinder Kumar
- Division of Plant Protection, ICAR-Central Potato Research Institute, Shimla, HP 171001, India
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India
| | - Vikas Mangal
- Division of Crop Improvement, ICAR-Central Potato Research Institute, Shimla, HP 171001, India
| | - Awadhesh Kumar
- Division of Crop Physiology and Biochemistry, ICAR-National Rice Research Institute, Cuttack 753006, Odisha, India
| | - Rakesh Kumar
- Division of Plant Protection, ICAR-Central Potato Research Institute, Shimla, HP 171001, India
| | - Sanjeev Sharma
- Division of Plant Protection, ICAR-Central Potato Research Institute, Shimla, HP 171001, India
| | - Vinay Sagar
- Division of Plant Protection, ICAR-Central Potato Research Institute, Shimla, HP 171001, India
| | - Brajesh Singh
- Division of CPB&PHT, ICAR-Central Potato Research Institute, Shimla, HP 171001, India
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Deng S, Liu Q, Chang W, Liu J, Wang H. First specific detection and validation of tomato wilt caused by Fusarium brachygibbosum using a PCR assay. PeerJ 2023; 11:e16473. [PMID: 38047027 PMCID: PMC10693239 DOI: 10.7717/peerj.16473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 10/25/2023] [Indexed: 12/05/2023] Open
Abstract
Tomato wilt is a widespread soilborne disease of tomato that has caused significant yield losses in many tomato growing regions of the world. Previously, it was reported that tomato wilt can be caused by many pathogens, such as Fusarium oxysporum, Ralstonia solanacearum, Ralstonia pseudosolanacearum, Fusarium acuminatum, and Plectosphaerella cucumerina. In addition, we have already reported that Fusarium brachygibbosum caused symptomatic disease of tomato wilt for the first time in China. The symptoms of tomato wilt caused by these pathogens are similar, making it difficult to distinguish them in the field. However, F. brachygibbosum specific identification method has not been reported. Therefore, it is of great importance to develop a rapid and reliable diagnostic method for Fusarium brachygibbosum to establish a more effective plan to control the disease. In this study, we designed F. brachygibbosum-specific forward primers and reverse primers with a fragment size of 283bp located in the gene encoding carbamoyl phosphate synthase arginine-specific large chain by whole genome sequence comparison analysis of the genomes of eight Fusarium spp.. We then tested different dNTP, Mg2+ concentrations, and annealing temperatures to determine the optimal parameters for the PCR system. We evaluated the specificity, sensitivity and stability of the PCR system based on the optimized reaction system and conditions. The PCR system can specifically identify the target pathogens from different fungal pathogens, and the lower detection limit of the target pathogens is at concentrations of 10 pg/uL. In addition, we can accurately identify F. brachygibbosum in tomato samples using the optimized PCR method. These results prove that the PCR method developed in this study can accurately identify and diagnose F. brachygibbosum.
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Affiliation(s)
- Siyi Deng
- Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Wuhan, Hubei, China
- Key Laboratory of Integrated Pest Management on Crops in Central China, Ministry of Agriculture, Wuhan, Hubei, China
- Hubei Key Laboratory of Crop Disease, Insect Pests and Weeds Control, Wuhan, Hubei, China
| | - Quanke Liu
- General Plant Protection Station of Hubei Province, Wuhan, Hubei, China
| | - Wei Chang
- Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Wuhan, Hubei, China
- Key Laboratory of Integrated Pest Management on Crops in Central China, Ministry of Agriculture, Wuhan, Hubei, China
- Hubei Key Laboratory of Crop Disease, Insect Pests and Weeds Control, Wuhan, Hubei, China
| | - Jun Liu
- Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Wuhan, Hubei, China
- Key Laboratory of Integrated Pest Management on Crops in Central China, Ministry of Agriculture, Wuhan, Hubei, China
- Hubei Key Laboratory of Crop Disease, Insect Pests and Weeds Control, Wuhan, Hubei, China
| | - Hua Wang
- Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Wuhan, Hubei, China
- Key Laboratory of Integrated Pest Management on Crops in Central China, Ministry of Agriculture, Wuhan, Hubei, China
- Hubei Key Laboratory of Crop Disease, Insect Pests and Weeds Control, Wuhan, Hubei, China
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