Pioneer Hi-bred International, Inc.

E.i. Dupont De Nemours and Company

Corteva Agriscience LLC

Huirong Gao

Andrew Mark Cigan

Saverio Carl Falco

Zhan-Bin Liu

Sergei Svitashev

James Jefferson Smith

Derek Jantz

Zhongsen Li

Joshua K Young

Michael W Lassner

Robert B Meeley

Lu Liu

Christopher Jay Scelonge

James J English

Ericka Bermudez

Leszek Aleksander Lyznik

Azalea S Ong

Zhan-bin Liu

Mark Jacob Gadlage

Keith S Lowe

Dennis L Bidney

Jinrui Shi

Dean Podlich

Jasdeep Mutti

L Aleksander Lyznik

Mike Lassner

Carl Falco

Mark Cigan

William James Gordon-Kamm

Bailin Li

David J Peterson

Yumin Tao

Zhenglin Hou

Jeffrey Habben

Leandro Daniel Perugini

Girma M Tabor

L Alexander Lyznik

Sabrina Humbert

Compositions and methods are provided for genome modification of a target sequence in the genome of a plant or plant cell. The methods and compositions employ a guide RNA/Cas endonuclease system to provide an effective system for modifying or altering target sites within the genome of a plant, plant cell or seed. Also provided are compositions and methods employing a guide polynucleotide/Cas endonuclease system for genome modification of a nucleotide sequence in the genome of a cell or organism, for gene editing, and/or for inserting or deleting a polynucleotide of interest into or from the genome of a cell or organism. Once a genomic target site is identified, a variety of methods can be employed to further modify the target sites such that they contain a variety of polynucleotides of interest. Breeding methods and methods for selecting plants utilizing a two component RNA guide and Cas endonuclease system are also disclosed. Compositions and methods are also provided for editing a nucleotide sequence in the genome of a cell.

Plant genome modification using guide RNA/Cas endonuclease systems and methods of use

Methods for producing in a plant a complex transgenic trait locus comprising at least two altered target sequences in a genomic region of interest are disclosed. The methods involve the use of two or more double-strand-break-inducing agents, each of which can cause a double-strand break in a target sequence in the genomic region of interest which results in an alteration in the target sequence. Also disclosed are complex transgenic trait loci in plants. A complex transgenic trait locus comprises at least two altered target sequences that are genetically linked to a polynucleotide of interest. Plants, plant cells, plant parts, and seeds comprising one or more complex transgenic trait loci are also disclosed.

Methods for producing a complex transgenic trait locus

Compositions and methods are provided for introducing transgenic target sites for Site Specific Integration (SSI) and/or polynucleotides of interest into at least one double-strand break target site of a double-strand-break inducing agent in a genomic window of a plant genome. Also provided are methods and compositions for producing a complex trait locus in a genomic window of a plant comprising at least one transgenic target site for site specific integration integrated in at least double-strand-break target site. The double-strand-break target site can be, but is not limited to, a target site for a zinc finger endonuclease, an engineered endonuclease, a meganuclease, a TALENs and/or a Cas endonuclease. The genomic window of said plant can comprise at least one genomic locus of interest such as a trait cassette, a transgene, a mutated gene, a native gene, an edited gene or a site-specific integration (SSI) target site.

Generation of site specific integration sites for complex trait loci in corn and soybean, and methods of use

Methods and compositions for modulating plant meristems. Methods are provided for modulating fea3 and/or Fcp1 genomic locus in a host plant or plant cell to improve agronomic characteristics such as kernel number.

Methods and compositions to increase yield through modifications of FEA3 genomic locus and associated ligands

The disclosure provides plant, plant parts, plant cells, seed and grain containing a targeted genetic modification that inserts an inverted repeat sequence into a gene. The disclosure further provides hybrid plants that contain the inverted repeat sequence in a single allele of the gene. Further provided are methods for decreasing expression of a gene encoding a polypeptide of interest in a hybrid plant by crossing a plant comprising the targeted genetic modification with a plant not comprising the genetic modification to produce a hybrid plant that contains the inverted repeat sequence in a single allele of the gene.

Dominant CRISPR inverted-repeat alleles to down-regulate gene expression in heterozygous plants

Compositions and methods for obtaining plant cells with modified Ht1 nucleotide sequences, modified NLB18 sequences, or both, are provided herein. The methods involve introducing double-strand breaks into the maize genome in an endogenous Ht1 encoding sequence, an endogenous NLB18 encoding sequence, or both, to modify the genomic sequence in order to enhance northern leaf blight resistance of a plant produced from the plant cell. Further provided are methods that introduce resistant alleles of Ht1 and/or NLB18 into specific sites in the genome. Plants produced by the plant cells, and seeds produced from the plants are also included. Guide polynucleotides are also provided for the use of the CRISPR-Cas system in inducing double strand breaks.

Generating northern leaf blight resistant maize

The present disclosure involves the production of Waxy maize. Compositions and methods are provided for knocking out expression of the Waxy (Wx1) gene in maize by making double strand breaks at one or more target sites in an endogenous WX1 encoding sequence. Some methods employ one or more guide polynucleotides and a Cas endonuclease, wherein Cas endonuclease is guided by the one or more guide polynucleotides to recognize and introduce double strand breaks at specific target sites in and around the Wx1 gene. Also provided are compositions and methods for the production of Waxy maize plant cells, plant explants, seeds and grain.

Waxy corn

Generation of site-specific-integration sites for complex trait loci in corn and soybean, and methods of use

Compositions and methods comprising polynucleotides and polypeptides having meganuclease activity are provided. Further provided are nucleic acid constructs, yeast, plants, plant cells, explants, seeds and grain having the meganuclease sequences. Various methods of employing the meganuclease sequences are provided. Such methods include, for example, methods for producing a meganuclease with increased activity at a wide range of temperatures, methods for producing a yeast, plant, plant cell, explant or seed comprising a meganuclease with increased activity.

Compositions and methods comprising sequences having meganuclease activity

Compositions and methods are provided for the targeted integration of a polynucleotide sequence of interest into the genome of a plant or plant cell. The methods and compositions employ recognition sites for endonucleases and endonucleases in combination with site-specific recombination sites/recombinases to provide an effective system for establishing target sites within the genome of a plant, plant cell or seed. Once such target sites are established, a variety of methods can be employed to further modify the target sites such that they contain a variety of polynucleotides of interest.

Methods and compositions for targeted integration in a plant

Growing community of inventors

Johnston, IA, United States of America

Huirong Gao