iNaturalist:
Sugar maple spotting slows as Canada's fall color fades
iNaturalist:
Red oak spotting slows down as fall colors fade
iNaturalist:
This fuzzy forest moss is suddenly everywhere in Canada
iNaturalist:
Milkweed sightings stay high across Canada as autumn sets in
iNaturalist:
Invasive buckthorn sightings surge across Canada this week
iNaturalist:
Pokeweed sightings dip slightly as fall observation seaso...
iNaturalist:
This weedy wetland plant is everywhere on iNaturalist this week
iNaturalist:
Eastern redcedar is having a moment on iNaturalist this week
iNaturalist:
Sugar maple spotting slows as Canada's fall color fades
iNaturalist:
Red oak spotting slows down as fall colors fade
iNaturalist:
This fuzzy forest moss is suddenly everywhere in Canada
iNaturalist:
Milkweed sightings stay high across Canada as autumn sets in
Gold nanoparticle-mediated elicitation enhances andrographolide biosynthesis via auxin signalling in optimized hairy root cultures of Andrographis paniculata.
PubMed · 2026-05-22
Researchers grew medicinal plant roots in a lab and used tiny gold particles to dramatically boost production of andrographolide — a compound used in traditional medicine to fight infections and inflammation — achieving nearly 9 times more of it than normal.
1
Treatment with gold nanoparticles at 40 mg/L for 48 hours increased andrographolide production 8.8-fold, reaching 372.17 mg per gram of dry weight.
2
Hairy root cultures achieved a transformation efficiency of 79.9% and peak biomass on day 40, providing a reproducible lab-based production platform.
3
Gold nanoparticle elicitation activated auxin-signaling genes ARF1 (9.2-fold) and ARF3 (6.09-fold), revealing the hormonal pathway driving the yield boost.
