Monsanto Technology LLC

Calgene Corporation

Guangning Ye

Jeffrey M Staub

Vladimir Sidorov

David M Stalker

Yuechun Wan

Xiaohong Shi

Santiago Xavier Navarro

William D Rapp

Marguerite J Varagona

Siva Manjunath

David J Schaaf

Narender S Nehra

Jennifer L Winson

Debra L Broyles

Kevin E McBride

David R Duncan

Peter T Hajdukiewicz

Debra Broyles

A method is provided for transforming monocotyledonous plants to express DNA sequences of interest from plant cell plastids. The method allows the transformation of monocot plant tissue with heterologous DNA constructs. The invention also provides for monocot cells in which the plastids contain heterologous DNA constructs.

Plastid transformation of maize

A method is provided for transforming maize plants to express DNA sequences of interest from plant cell plastids. The method allows the transformation of maize plant tissue with heterologous DNA constructs by microprojectile bombardment of green light grown cultures and dark grown embryogenic cultures. The invention also provides for maize cells in which the plastids contain heterologous DNA constructs.

Novel expression vectors and constructs encoding a chloroplast transit peptide (CTP) operably linked to a monomeric anthranilate synthase are provided. Additionally, novel polynucleotide sequences encoding monomeric anthranilate synthases are provided. Also provided are methods for increasing the levels of free tryptophan in transgenic plants containing the expression vectors and constructs.

Production of high tryptophan maize by chloroplast targeted expression of anthranilate synthase

Methods for the regeneration of cotton plants are disclosed. The use of novel compositions of media, media additives and new growth conditions during stages of development results in increased frequencies of embryogenesis, embryo maturation and embryo germination. The improved process results in higher production frequencies of transformed cotton plants.

Methods for inducing cotton embryogenic callus

Novel compositions and methods useful for genetic engineering of plant cells to provide a method of producing plastid transformed plants are provided in the instant invention. In particular, the present invention provides methods for obtaining plastid transformed plants on medium containing plastid lethal compounds.

Method for the transformation of plant cell plastids

A method is provided for transforming solanaceous plants to express DNA sequences interest from the plant cell plastid. The improved method allows the transformation of solanaceous plant tissue which is not obtained from tobacco with DNA constructs. Such DNA constructs comprise, in the 5&prime; to 3&prime; direction of transcription, a promoter region functional in a plant plastid and a DNA sequence of interest. The method can be utilized in the transformation of solanaceous plants, such as potato and petunia. The invention further provides constructs and methods for the expression of green fluorescent protein from the plant cell plastid.

Plastid transformation of solanaceous plants

Provided are constructs and methods for expressing herbicide tolerance genes in plastids of plant cells. Constructs include the components of a promoter functional in a plant plastid, a DNA sequence which is capable of conferring tolerance in a plant cell to at least one herbicide compound when said DNA sequence is transcribed in plastids of said plant cell and a transcription termination region. Herbicide tolerance is produced by transforming plastids with the constructs of the invention and growing plant cells comprising the transformed plastids under conditions wherein the DNA sequence is transcribed and plant plastids and cells containing the plastids are rendered tolerant to applications of at least one herbicide compound.

Growing community of inventors

Chesterfield, MO, United States of America

Guangning Ye