First report of tobacco root rot caused by Gelasinospora reticulata |
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| Affiliation: | 1. Tobacco Integrated Pest Management of China Tobacco, Tobacco Research Institute of Chinese Academy of Agricultural Science, Qingdao 266101, China;2. State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100093, China;3. China National Tobacco Corporation Chongqing Company, Youyang Subsidiary Company, Youyang 409800, China;1. Electrodics and Electrocatalysis Division, CSIR-Central Electrochemical Research Institute, Karaikudi, 630 003, Tamil Nadu, India;2. Nanobiosensors/Bioelectronics Laboratory, Florida International University, Miami, FL 33174, USA;1. Department of Sustainable Agro-Ecosystems and Bioresources, Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1-38010 S. Michele all’Adige, TN, Italy;2. Department of Computational Biology, Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1-38010 S. Michele all’Adige, TN, Italy;3. Department of Agrifood Production and Environmental Sciences, University of Firenze, Piazzale delle Cascine 24-50144 Florence, Italy;4. Microbial Processes and Interactions Research Unit, Gembloux Agro-Bio Tech, University of Liège, Passage des Déportés 2-5030 Gembloux, Belgium;1. Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, China;2. Pharmacogenetics Research Institute, Institute of Clinical Pharmacology, Central South University, Changsha 410078, China;1. Department of Molecular Biology and Genetics, Aarhus University, Denmark;2. Department of Agroecology, Aarhus University, Denmark;1. School of Life Science, East China Normal University, Shanghai 200241, PR China;2. School of Medicine, Shang Hai Jiao Tong University, Shanghai, PR China |
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| Abstract: | In August 2012, a new tobacco root disease was observed in a number of tobacco fields in Shi-Ka Village, Pianbai Town, Youyang County of Chongqing City, China. The disease incidence varied from 10% to 40%, and the seedling mortality ranged from 50% to 80%. Affected tobacco plants developed symptoms characterized by a progressive yellowing and wilting of leaves, brown or black streaks in the stems, and root necrosis that eventually lead to the death of the plant. In this study, we were able to confirm field observations in the greenhouse using fungal isolates. The seedling mortality rate under artificial inoculation was 100%. The results of a pathogenicity test and morphological studies as well as rDNA internal transcribed spacer (ITS) and β-tubulin sequence analyses indicated that the disease was caused by Gelasinospora reticulata. This is a novel root rot disease on tobacco caused by this pathogen. |
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| Keywords: | Tobacco disease Identification Pathogen |
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