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Bristlecone Pine

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Methuselah: The 4,800-Year-Old Bristlecone Pine That Outlives Empires
green-impact1 month ago

Methuselah: The 4,800-Year-Old Bristlecone Pine That Outlives Empires

California’s Methuselah, a Great Basin bristlecone pine in the White Mountains, is about 4,800 years old, making it the world’s oldest known non-clonal living tree. Its endurance comes from ultra-slow growth, needle retention for decades, and a windswept, nutrient-poor habitat that acts as a natural shield—discovered in the 1950s by Edmund Schulman through increment cores. While revered as a symbol of resilience, Methuselah’s future is now threatened by climate-driven drought, heat, pests, and wildfires, mirroring the risks facing ancient forests worldwide.

Ancient Pine Genome Reveals a 23.8-Billion-Base Blueprint for Longevity
science4 months ago

Ancient Pine Genome Reveals a 23.8-Billion-Base Blueprint for Longevity

Scientists have produced the first complete reference genome for the 5,000-year-old Great Basin bristlecone pine (Pinus longaeva), a 23.8-billion-base-pair genome eight times the size of the human genome; the assembly, created with short- and long-read sequencing, reveals a genome rich in repetitive DNA and about 21,364 protein-coding genes. While some longevity-related features—such as disease-resistance genes and longer telomeres—were observed, the researchers cautioned that no single mechanism explains the tree’s lifespan. The genome provides a foundational resource for studying extreme longevity and the species’ response to environmental stress, and may inform conservation efforts.