Lettuce Plant Resistant to Downy Mildew and Resistance Gene
AssigneeEnza Zaden Beheer B.V.
InventorsBas Ter Riet, Mathieu Andre Pel, Stephanie Melanie Broos
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Abstract
Provided herein is a lettuce plant that is resistant to downy mildew, more specifically a lettuce plant that includes a mutated gene that confers broad spectrum resistance to oomycetes in lettuce, more specifically Bremia lactucae. Furthermore also provided herein are a resistance gene and a method for obtaining a lettuce plant that is resistant to downy mildew, wherein the method includes the step of mutating a gene.
Claims32
A lettuce plant that is resistant to downy mildew, comprising one or more mutations in a SL7 gene, wherein said SL7 gene encodes for a protein having the sequence of SEQ ID No. 2 or having at least 90% sequence identity with SEQ ID No. 2, wherein the one or more mutations in the SL7 gene result in an amino acid substitution at position 38 in the SL7 protein represented by SEQ ID No.2.
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A method for obtaining a lettuce plant that is resistant to downy mildew, comprising the steps of,
- a) crossing a first lettuce plant comprising a resistance gene SL7R having the nucleotide sequence of SEQ ID No. 3 with a second lettuce plant that does not comprise said SL7R gene, thereby producing a first offspring plant
- b) optionally, selfing the offspring plant obtained in step a) for at least one time, thereby producing a second offspring plant
- c) selecting one or more first and/or second offspring plants that are resistant to downy mildew.
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Dependencies are inferred from the claim text.