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Late blight in tomato: insights into the pathogenesis of the aggressive pathogen Phytophthora infestans and future research priorities

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This review provides insights into the molecular interactions between Phytophthora infestans and tomato and highlights research gaps that need further attention.


Late blight in tomato is caused by the oomycota hemibiotroph Phytophthora infestans, and this disease represents a global threat to tomato farming. The pathogen is cumbersome to control because of its fast-evolving nature, ability to overcome host resistance and inefficient natural resistance obtained from the available tomato germplasm. To achieve successful control over this pathogen, the molecular pathogenicity of P. infestans and key points of vulnerability in the host plant immune system must be understood. This review primarily focuses on efforts to better understand the molecular interaction between host pathogens from both perspectives, as well as the resistance genes, metabolomic changes, quantitative trait loci with potential for improvement in disease resistance and host genome manipulation via transgenic approaches, and it further identifies research gaps and provides suggestions for future research priorities.

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This work was supported by the CEBAR Research University grant RU004D-2020 and Fundamental Research Grant Scheme grant (FP005-2020).

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Correspondence to Purabi Mazumdar.

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Communicated by Gerhard Leubner.

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Mazumdar, P., Singh, P., Kethiravan, D. et al. Late blight in tomato: insights into the pathogenesis of the aggressive pathogen Phytophthora infestans and future research priorities. Planta 253, 119 (2021).

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