The abstract is read at the publisher; the summary is JClub's.
A chromosome-scale genome for the drought-adapted Spondias tuberosa anchors 288 Mb to 16 chromosomes with 98.8% BUSCO completeness and reveals an unduplicated, largely collinear architecture in Anacardiaceae.
- Why it matters: Comparative genome evolution across Anacardiaceae is limited, despite drought and heat adaptation in Spondias tuberosa and available genomes from related crops.
- What they did: The authors assembled one Spondias tuberosa individual using PacBio HiFi plus Omni-C, mapped meiotic crossovers from single-nucleus pollen RNA sequencing, and compared synteny, Ks, and gene family expansion/contraction across six Sapindales species in a dated phylogenomic framework.
- The result: They detected 1,740 crossovers in 153 pollen nuclei (4.01 cM.Mb1) depleted in repeat-rich pericentromeric regions, found a Mangifera–Anacardium whole-genome duplication absent from Spondias tuberosa, and identified 97 expanded gene families mainly via tandem duplication.
The findingWhy it mattersWhat they didThe result
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