Generation of haploid plants

US11895960B2 · kind B2 · utility

Assignee

• KWS SAAT SE & Co. KGaA · DE

Inventors

• Andreas Houben · Quedlinburg, DE
• Raheleh Karimi-Ashiyani · Tehran, IR
• Takayoshi Ishii · Nachterstedt, DE
• Nils Stein · Quedlinburg, DE
• Jochen Kumlehm · Potsdam, DE
• Christof BOLDUAN · Einbeck, DE
• Frank Breuer · Einbeck, DE
• Monika KLOIBER-MAITZ · Einbeck, DE
• Markus NIESSEN · Laatzen, DE
• Milena OUZUNOVA · Göttingen, DE
• Britta Schulz · Einbeck, DE
• Silke WIECKHORST · Einbeck, DE

Key dates

• Filing date: Mar 31, 2021
• Grant date: Feb 13, 2024
• Expiry date: Aug 12, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02A40/146
• WIPO field: Biotechnology
• WIPO sector: Chemistry

Abstract

The present invention relates to non-transgenic and transgenic plants, preferably crop plants, comprising a mutation causing an alteration of the amino acid sequence in the CATD domain of the centromere histone H3 (CENH3), preferably within the loop1 or the α2-helix of the CATD domain, which have the biological activity of a haploid inducer. Further, the present invention provides methods of generating the plants of the present invention and haploid and double haploid plants obtainable by crossing the plants of the present invention with wildtype plants as well as methods of facilitating cytoplasm exchange.