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JamesHartwell

@jameshartwell.bsky.social

Plant biologist studying Crassulacean acid metabolism, C4 & C3 photosynthesis using functional genomics. Fascinated by plants, their diversity and evolution.

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Reposted by JamesHartwell

matthiaserb.bsky.social @matthiaserb.bsky.social · 28/08/2026

Here is our experimental answer to the question of how plant leaves take up volatiles. Tested with the very cool Kalanchoë laxiflora, which has two types of leaves with opposite stomatal opening patterns. With @heikelindner.bsky.social and colleagues. Happy reading! t.co/aU77BZTqYV

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JamesHartwell @jameshartwell.bsky.social · 05/06/2026

Just published in The Plant Journal: dx.doi.org/10.1111/tpj.... Jess Pritchard produced stable transgenic lines of Kalanchoë laxiflora that luminesce with circadian rhythms of luciferase activity, revealing new insights into the circadian clock control of CAM genes.

dx.doi.org

A PROMOTER::LUCIFERASE reporter system reveals key elements of the circadian regulation of Crassulacean acid metabolism (CAM) in Kalanchoë laxiflora Baker

Circadian rhythms of firefly luciferase in the Crassulacean acid metabolism (CAM) species Kalanchoë laxiflora were driven by both CAM and non-CAM gene promoters, revealing valuable new insights into ...

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JamesHartwell @jameshartwell.bsky.social · 27/03/2026

Nice to see the story about Kalanchoë laxiflora MUTE regulating stomatal subsidiary cell development from the labs of @heikelindner.bsky.social @michaelraissig.bsky.social being picked up by wider news outlets: phys.org/news/2026-03...

phys.org

Succulents as role models: How they balance photosynthesis and water loss so efficiently

A research team led by the University of Bern has decoded a mechanism by which an inconspicuous succulent regulates the uptake of carbon dioxide via the leaf surface so finely that it receives enough ...

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JamesHartwell @jameshartwell.bsky.social · 27/03/2026

Many thanks to @michaelraissig.bsky.social @heikelindner.bsky.social for this brilliant collaboration. They did the elegant and innovative developmental biology and we provided resources and training for the Kalanchoë laxiflora diploid model species: Science Advances www.science.org/doi/10.1126/...

science.org

MUTE drives asymmetric divisions to form stomatal subsidiary cells in Crassulaceae succulents

Crassulaceae MUTE guides asymmetric divisions to form stomatal subsidiary cells in succulents.

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