Researchers Mapped Genes Linked to Spruce Cone Formation
A study in Cell identified the DAL55 gene, a step that could eventually speed up breeding cycles for the slow-maturing trees.
Updated on Sept. 20, 2026 in Botany
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Researchers have mapped the gene expression of Norway spruce shoots, identifying a previously undescribed gene called DAL55 that regulates the transition to cone development. This study represents fundamental research into the molecular mechanisms of coniferous tree reproduction.
Why it matters
Norway spruce trees typically require over 25 years to reach maturity and produce cones only every three to five years, creating a significant bottleneck for foresters. Identifying the specific genes behind this transition could enable faster breeding cycles for more resilient forest stocks.
The team utilized spatial transcriptomics on 88 shoot tissue sections, each cut to 10 micrometers in thickness. This method allowed researchers to correlate specific gene activity, including the newly identified DAL55, with the precise locations of growing cells in the spruce samples.
The players
Cell
A high-impact scientific journal that publishes peer-reviewed research across all areas of experimental biology.
The details
Researchers used spatial transcriptomics—a technique that measures gene expression while maintaining the tissue's physical architecture—to visualize how spruce shoots shift from branch growth to cone formation. By comparing tissue sections taken across the late summer and autumn, the team observed that DAL55 gene activity increased steadily through September and October. This discovery adds context to the study of the acrocona mutant, a variant known to produce cones earlier than standard spruce trees.
Timeline
August, September, and October were the months during which researchers collected the 88 shoot tissue samples.
The Tech Race
This study advances the ongoing research into tree breeding and conifer reproductive biology by isolating the genetic switches responsible for delayed maturity. It moves the field closer to synthetic control of plant life cycles, contrasting with historical reliance on decades-long natural growth cycles.
This development is currently in the research phase and does not yet affect commercial nursery practices or timber production. Future applications depend on whether researchers can successfully use these genetic insights to shorten the 25-year maturity threshold for commercial spruce species.
The takeaway
Understanding the genetic trigger for cone production could revolutionize how forestry industries select for faster-growing or more resilient wood supplies. Keep an eye on follow-up studies regarding the functional deactivation of the DAL55 gene to confirm its role in tree development.
What happens next
Researchers have announced plans to determine the specific function of the DAL55 gene by deactivating it in living trees, which will serve as the next phase of experimental validation.
Further reading
For broader context on plant development science, visit the Botany section.
Source note: This article includes information reported by Earth.
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