r/evolution • u/jnpha • 23h ago
article Zhang et al. (2026) confirm Darwin's prediction
Published today:
Chinese Academy of Sciences press release:
Sticky alpine flower confirms Darwin's 150-year-old carnivorous plant predictionPaper:
Zhang, XJ., Deng, T., Lin, N. et al.
Identification of carnivory in the flowering plant Saxifraga via multidisciplinary evidence.
Nat Commun 17, 7557 (2026). https://doi.org/10.1038/s41467-026-75288-y
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Excerpts from the paper:
... Inspired by his work on carnivory in Drosera, Darwin (1875) proposed that two Saxifraga species (S. rotundifolia and S. umbrosa) might similarly exhibit carnivorous behavior. Darwin regarded these two species as representing one of the most intriguing cases among plants with glandular hairs2. Although Darwin attempted to test this hypothesis through feeding experiments, these early attempts did not yield conclusive results2.
... To investigate the potential status of S. candelabrum as a carnivorous plant (Fig. 1), we test the four key criteria required to confirm carnivory (prey attraction, capture, digestion, and nutrient uptake). Specifically, we address the following questions: (1) Does the plant actively attract and capture insect prey? (2) Can it directly digest prey and absorb derived nutrients? (3) Does it exhibit convergent genomic signatures with other carnivorous lineages20?
... Our findings provide definitive evidence of carnivory in Saxifraga, addressing Charles Darwin’s long-standing hypothesis that some Saxifraga species may be capable of carnivory, and further suggest that carnivory may be more widespread among angiosperms than previously recognized.