Abstract
Modern genome editing tools particularly CRISPR/Cas9 have revolutionized plant genome manipulation for engineering resilience against changing climatic conditions, disease infestation, as well as functional genomic studies. CRISPR-mediated genome editing allows for editing at a single as well as multiple locations in the genome simultaneously, making it an effective tool for polyploid species too. However, still, its applications are limited to the model crops only. Extending it to crop plants will help improve field crops against the changing climates more rapidly and precisely. Here we describe the protocol for editing the genome of a field crop Brassica juncea (mustard), an allotetraploid and important oilseed crop of the Indo-Pak Subcontinent region. This protocol is based on the Agrobacterium-mediated transformation for the delivery of CRISPR components into the plant genome using cotyledon as explants. We elaborate on steps for recovering genome-edited knockouts, for validation of the edits, as well as recovering the transgene-free edited plants through a commonly used segregating approach.
Published Version
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