The abstract is read at the publisher; the summary is JClub's.
Petrocodon diversification in karst habitats across southern China and northern Indochina is largely nonadaptive, with species accumulation driven mainly by geographic isolation and allopatric divergence rather than niche differentiation.
- Why it matters: It addresses whether radiations are shaped primarily by ecological adaptation or by neutral processes, using a karst-endemic system with strong spatial structure.
- What they did: Whole-genome sequencing was generated for 54 of 60 described Petrocodon species and combined with morphology, geography, and paleoclimate to test ecological versus neutral drivers.
- The result: Diversification began during a favorable climatic period enabling range expansion, but later accumulation was mainly allopatric; morphological evolution lagged and is linked to drift in small isolated populations, with hybridization potentially contributing to phenotypic innovation.
The findingWhy it mattersWhat they didThe result
AI summary of the abstract · may contain errors · not medical advice · read the paper.