@article{b5d2c9ae00264bb5b7fec1b9162f4768,
title = "Hybridizations Between formae speciales of Venturia inaequalis Pave the Way for a New Biocontrol Strategy to Manage Fungal Plant Pathogens",
abstract = "Hybridization and adaptation to new hosts are important mechanisms of fungal disease emergence. Evaluating the risk of emergence of hybrids with enhanced virulence is then key to develop sustainable crop disease management. We evaluated this risk in Venturia inaequalis, the fungus responsible for the common and serious scab disease on Rosaceae hosts, including apple, pyracantha, and loquat. Field isolates from these three hosts and progenies obtained from five crosses between formae speciales isolates collected from pyracantha (f. sp. pyracantha) and apple (f. sp. pomi) were tested for their pathogenicity on the three hosts. We confirmed a strict host specificity between isolates from apple and pyracantha and showed that most isolates were able to cause disease on loquat. None of the 251 progeny obtained from five crosses between V. inaequalis f. sp. pyracantha and V. inaequalis f. sp. pomi could infect apple. If confirmed on more crosses, the inability of the hybrids to infect apple could lead to a novel biocontrol strategy based on a sexual hijacking of V. inaequalis f. sp. pomi by a massive introduction of V. inaequalis f. sp. pyracantha in apple orchards. This strategy, analogous to the sterile insect approach, could lead to the collapse of the population size of V. inaequalis and dramatically reduce the use of chemicals in orchards.",
keywords = "apple, biological control, crossing experiments, Eriobotrya, firethorn, host specificity, scab, sexual hijacking",
author = "Valerie Caffier and Jason Shiller and Bellanger, {Marie Noelle} and Jer{\^o}me Collemare and Pascale Expert and Pierre Gladieux and Claire Pascouau and Melanie Sannier and {Le Cam}, Bruno",
note = "Funding Information: Funding: This work was supported by the Agence Nationale de la Recherche (Emerfundis/07-BDIV-003), the RFI V{\'e}g{\'e}tal (project FUNADAPT), and by two projects funded by the Institut National de la Recherche Agronomique (Division “Plant Health and Environment” and “Direction for Partnership, Transfer and Innovation”). Funding Information: We thank the staff of the PHENOTIC core facility in Angers (https://data.inrae.fr/dataset.xhtml?persistentId=doi:10.15454/U2BWFJ) who ensured the production of the plants and maintenance of plant-growth facilities that allowed us to do this work and the students C. Granon, S. Alexandre, and S. Le Grand who contributed to the multiplication of progeny and the tests of pathogenicity. We thank the Biological Resource Center “RosePomPome Fruits and Roses” (https://www6.angers-nantes.inrae.fr/irhs/Ressourcesmutualisees/Ressources-genetiques/CRB-Fruits-a-pepins-et-rosier) and UE HORTI, INRAE, Horticulture Experimental Facility (https://doi.org/10.15454/1.5573931618268674E12) for maintaining apple material. We also thank Cecilia Multeau and Pascale Barbier for their advice in the development and management of this novel biocontrol project. Publisher Copyright: {\textcopyright} 2022 The American Phytopathological Society",
year = "2022",
month = jul,
doi = "10.1094/PHYTO-05-21-0222-SC",
language = "English",
volume = "112",
pages = "1401--1405",
journal = "Phytopathology",
issn = "0031-949X",
publisher = "American Phytopathological Society",
number = "7",
}