In the present invention, HPPD enzymes and plants containing them showing a full tolerance against several classes of HPPD-inhibitors are described.
A set of HPPD enzymes have been designed which have either no or only a significantly reduced affinity to HPPD inhibitors and, at the same time, the rate of dissociation of the HPPD inhibitors of the enzyme is increased to such an extent that the HPPD inhibitors no longer act as slow-binding or slow, tight-binding inhibitors but, instead of this, have become fully reversible inhibitors.
In particular, isolated polynucleotides encoding HPPD inhibitor tolerance polypeptides are provided. Additionally, amino acid sequences corresponding to the polynucleotides are encompassed.
Of herbicide tolerance to 4-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitors by down-regulation of HPPD expression in soybean
申请人:BASF AGRICULTURAL SOLUTIONS SEED US LLC
公开号:US11279944B2
公开(公告)日:2022-03-22
A method for conferring tolerance to a 4-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitor herbicide in a plant includes reducing expression of at least one HPPD enzyme in the plant.
The present disclosure relates to methods of altering expression of a genomic locus of interest or specifically targeting a genomic locus of interest in a plant cell, which may involve contacting the genomic locus with a non-naturally occurring or engineered composition that comprises a DNA binding domain comprising one or more Transcription Activator-Like (TAL) effector monomers specifically ordered to target the genomic locus of interest to improve tolerance of the plant cell to an effective concentration of an inhibitor herbicide.