Targeting a conserved functional motif in the PDS gene enables efficient CRISPR/Cas9 editing in banana.
Chandrasekaran J, Suthanthiram B, Selvaraj EP, Swaminathan S, Chandran SA
Crispr
Bananas are one mutation away from a repeat extinction-level disease outbreak like the one that wiped out the Gros Michel variety in the 1950s, and this editing breakthrough brings scientists measurably closer to engineering disease-resistant Cavendish bananas before the next fungal wave hits.
Bananas carry three copies of every gene, which makes it incredibly hard to edit all copies at once — usually you end up with plants that are half-edited and inconsistent. This team found a molecular 'weak spot' in a banana gene that is identical across all three copies, and by targeting it with genetic scissors, they turned off the gene completely in almost every plant they tried. As proof it worked, the plants turned white — since the targeted gene controls color pigments — and every plant turned the same shade, proving the edit was complete and consistent.
Key Findings
91% of 102 edited banana plants showed full albino phenotype, with 9% pale green — zero chimeric (mixed/partial) plants, indicating near-complete editing efficiency.
Tri-allelic editing was confirmed across all plants: all three gene copies were disrupted, with two carrying identical mutations and one a distinct mutation.
Tiny deletions of just 2–6 amino acids within the conserved binding motif were enough to fully abolish the gene's function, confirming the motif's essential role.
chevron_right Technical Summary
Scientists successfully used CRISPR gene editing in banana plants with near-perfect efficiency — 91% of edited plants showed a complete, uniform genetic change rather than the patchwork results that typically plague editing in crops with multiple gene copies. This solves a long-standing obstacle in improving bananas and other complex polyploid crops.
Abstract Preview
Incomplete editing and chimeric phenotypes are major challenges in CRISPR/Cas9-mediated genome editing of polyploid crops. In this study, a single guide RNA (gRNA) was designed to target a conserve...
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A banana is an elongated, edible fruit—botanically a berry—produced by several kinds of large treelike herbaceous flowering plants in the genus Musa. In some countries, cooking bananas are called plantains, distinguishing them from dessert bananas. The fruit is variable in size, color and firmnes...