Mutations Found in the Asc1 Gene That Confer Susceptibility to the AAL-Toxin in Ancestral Tomatoes from Peru and Mexico

Tomato susceptibility/resistance to stem canker disease caused by f. sp. and its pathogenic factor AAL-toxin is determined by the presence of the gene. Several cultivars of commercial tomato ( var. , ) are reported to have a mutation in , resulting in their susceptibility to AAL-toxin. We evaluated...

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Bibliographic Details
Published in:	Plants (Basel) Vol. 10; no. 1; p. 47
Main Authors:	Tsuzuki, Rin, Cabrera Pintado, Rosa María, Biondi Thorndike, Jorge Andrés, Gutiérrez Reynoso, Dina Lida, Amasifuen Guerra, Carlos Alberto, Guerrero Abad, Juan Carlos, Aragón Caballero, Liliana Maria, Huarhua Zaquinaula, Medali Heidi, Ureta Sierra, Cledy, Alberca Cruz, Olenka Ines, Elespuru Suna, Milca Gianira, Blas Sevillano, Raúl Humberto, Torres Arias, Ines Carolina, Flores Ticona, Joel, de Baldárrago, Fátima Cáceres, Pérez, Enrique Rodoríguez, Hozum, Takuo, Saito, Hiroki, Kotera, Shunsuke, Akagi, Yasunori, Kodama, Motoichiro, Komatsu, Ken, Arie, Tsutomu
Format:	Journal Article
Language:	English
Published:	Switzerland MDPI AG 28-12-2020 MDPI
Subjects:	AAL-toxin Alternaria alternata alternaria alternata tomato pathotype Apoptosis Cultivars Disease resistance Domestication Gene deletion Genes Mutation Nucleotides Peru Phylogeny Plant breeding Proteins Solanum lycopersicum cerasiforme Solanum lycopersicum lycopersicum Solanum lycopersicum var. cerasiforme Solanum pimpinellifolium Stem canker Susceptibility Tomatoes Toxins South America Ecuador Galapagos Islands Mexico Bolivia Chile Peru alternaria alternata tomato pathotype Solanum lycopersicum var. cerasiforme Solanum pimpinellifolium Peru AAL-toxin
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Summary:	Tomato susceptibility/resistance to stem canker disease caused by f. sp. and its pathogenic factor AAL-toxin is determined by the presence of the gene. Several cultivars of commercial tomato ( var. , ) are reported to have a mutation in , resulting in their susceptibility to AAL-toxin. We evaluated 119 ancestral tomato accessions including ( ), var. ( ) and var. "jitomate criollo" ( ) for AAL-toxin susceptibility. Three accessions, PER018805, PER018894, and M5-3, were susceptible to AAL-toxin. PER018894 and M5-3 had a two-nucleotide deletion (nt 854_855del) in identical to that found in cv. Aichi-first. Another mutation (nt 931_932insT) that may confer AAL-toxin susceptibility was identified in PER018805. In the phylogenetic tree based on the 18 COSII sequences, a clade (S3) is composed of , including the AAL-toxin susceptible PER018805, and . AAL-toxin susceptible PER018894 and M5-3 were in Clade S2 with cultivars. As is thought to be the ancestor of , and is an intermediate tomato between and , s with/without the mutation seem to have been inherited throughout the history of tomato domestication and breeding.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	2223-7747 2223-7747
DOI:	10.3390/plants10010047