Methods in molecular biology (Clifton, N.J.)Oct 6, 2025

Designing Targeted RNA for Editing Plant Stress Genes

Updated Jan 2, 2026

Abstract

CRISPR/Cas9 genome editing may enhance stress tolerance in plants by precisely manipulating genes involved in stress responses.

Prior exposure to environmental stress can improve future stress tolerance in plants.
CRISPR-based methods allow for the detailed study and modification of regulatory genes related to stress memory.
The design and validation of single guide RNAs (sgRNAs) are crucial for successful genome editing outcomes.
The chapter includes a case study on sgRNAs targeting the Arabidopsis thaliana DREB2A gene, which is linked to drought stress memory.
Strategies are discussed to optimize on-target editing efficiency and reduce unintended effects in plant genome editing.

Simplified

CRISPR/Cas9 genome editing has emerged as a transformative tool in plant biology, enabling precise manipulation of genes involved in stress responses. In the context of plant stress memory, where prior exposure to environmental stress enhances subsequent stress tolerance. CRISPR-based approaches offer a powerful means to dissect and engineer underlying regulatory genes. A critical factor determining the success of CRISPR/Cas9 editing is the careful design and validation of single guide RNAs (sgRNAs), which guide the Cas9 nuclease to specific genomic targets. This chapter provides a detailed, step-by-step protocol for the design, in vitro transcription, and in vitro cleavage assay to check efficiency of target-specific sgRNAs for plant genome editing applications. As a case study, we describe the design and validation of sgRNAs targeting the Arabidopsis thaliana DREB2A gene, a key transcription factor associated with drought stress memory. Emphasis is placed on strategies to maximize on-target efficiency, minimize off-target effects, and assess sgRNA functionality in vitro prior to in planta applications. This chapter serves as a practical guide for researchers aiming to functionally characterize stress memory-associated genes using CRISPR/Cas9 technology.

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