CRISPR gene editing could speed up breeding drought-tough forest trees
Gulfam T, Li W, Han Z, Gulfam Y, Li J
Crispr
The poplar, pine, or eucalyptus stands you hike through could someday be bred for drought resistance in a fraction of the time it takes a tree to even reach maturity.
Breeding a tougher tree the old-fashioned way takes forever because trees grow slowly and have messy, complicated genes. This review looks at how scientists are using precise gene-editing tools, similar to molecular scissors, to tweak specific traits in trees like poplar, pine, and eucalyptus, such as how they respond to drought or grow their roots. The catch is that many tree species are still hard to regrow from edited cells in the lab, so there's real work left before these edited trees end up in forests.
Key Findings
Review covers CRISPR-Cas9, Cas12, and Cas13 systems applied specifically to woody perennial species like Populus, Pinus, and Eucalyptus.
Gene editing has successfully rewired phytohormone signaling for drought tolerance and altered root architecture to combat abiotic stress in forest trees.
Major bottlenecks remain: genotype-dependent tissue regeneration is recalcitrant in many species, and long-term field validation of edited trees is still limited.
chevron_right Technical Summary
Scientists are using CRISPR gene-editing tools to speed up breeding hardier forest trees, tackling problems like drought and slow growth that make traditional tree breeding take decades.
Abstract Preview
Original paper
Gene Editing in Forest Tree Breeding for Stress Resistance: From Mechanisms to Future Prospects.
Forest ecosystems face escalating threats from climate change alongside a surging demand for sustainable bioproducts. While conventional tree breeding is inherently constrained by long generation c...
open_in_new Read full abstractAbstract copyright held by the original publisher.
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Populus is a genus of 25–30 species of deciduous flowering plants in the family Salicaceae, native to most of the Northern Hemisphere. English names variously applied to different species include poplar, aspen, and cottonwood.