Kws Saat Se * Co. Kgaa

Kws Saat Ag

Suedzucker Ag Mannheim/ochsenfurt

Sudzucker Aktiengesellschaft Mannheim/ochsenfurt

Kws Saat Se

Britta Schulz

Milena Ouzunova

Monika Kloiber-Maitz

Christof Bolduan

Markus Niessen

Frank Breuer

Silke Wieckhorst

Wolfgang Mechelke

Dietrich Borchardt

Jens Christoph Lein

Margaret Rekoske

Nils Stein

Otto Törjék

Jochen Kumlehm

Takayoshi Ishii

Andreas Houben

Karsten Harms

Otto Torjek

Raheleh Karimi-Ashiyani

Ottó Törjék

The present invention relates to non-transgenic and transgenic plants, preferably crop plants, having biological activity of a haploid inducer and comprising a polynucleotide which comprises a nucleotide sequence encoding a centromer histone H3 (CENH3) protein, wherein the polynucleotide comprises at least one mutation causing an alteration of the amino acid sequence of the CENH3 protein, and to a part of the part. Further, the invention provides methods of generating the inducer plants, methods of generating haploid and double haploid plants using the inducer plants as well as methods of facilitating cytoplasm exchange.

Generation of haploid plants

A more efficient breeding against plant disease, or the development of new resistant lines, is enabled via the provision of the resistance-mediating gene according to the invention; in particular, a resistance effect in the target plant is evoked by the property of the identified gene. The resistance-mediating gene, and embodiments of the present invention that are described in the preceding, offer additional applications, e.g., the use of the resistant gene allele in trans-genetic approaches, with the goal of developing new resistant cultivars.

Gene for resistance to plant disease

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.

A more efficient breeding against Cercospora leaf spot disease, or the development of new resistant lines, is enabled via the provision of the Cercospora resistance-mediating gene according to the invention; in particular, a dominant resistance effect in the target plant is evoked by the property of the identified gene alone. The Cercospora resistance-mediating gene, and embodiments of the present invention that are described in the preceding, offer additional applications, e.g., the use of the resistant gene allele in cis-genetic or trans-genetic approaches, with the goal of developing new resistant cultivars.

Gene conferring resistance toin beets

The present invention relates to non-tr&#xe4;nsgenic 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 &#x3b1;2-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.

A more efficient breeding againstleaf spot disease, or the development of new resistant lines, is enabled via the provision of theresistance-mediating gene according to the invention; in particular, a dominant resistance effect in the target plant is evoked by the property of the identified gene alone. Theresistance-mediating gene, and embodiments of the present invention that are described in the preceding, offer additional applications, e.g., the use of the resistant gene allele in cis-genetic or trans-genetic approaches, with the goal of developing new resistant cultivars.

A nucleic acid suitable for reducing the enzymatic activity of an invertase for configuring a sucrose storage organ of a plant, wherein the sucrose concentration is increased relative to the sucrose concentration of an unchanged control sucrose storage organ of the same genotype at a comparable stage of development. The increase in sucrose concentration by X percentage points can thereby lead to a changed or unchanged sucrose storage organ yield, wherein, in the case of a reduction in the sucrose storage organ yield, the reduction is a maximum of 5X percent. The invention further relates to a method for increasing the sucrose yield in agricultural production of sugar beet or sugar cane plants, wherein sugar beet or sugar cane plants are used, the genetic makeup thereof being set up for reducing the enzymatic activity of an invertase.

Method for increasing sucrose yield in agricultural production of sugar beet and sugar cane

Growing community of inventors

Einbeck, Germany

Britta Schulz