Rice (Oryza sativa) leaf blades possess lobed mesophyll cells with intricate cell boundaries. Their sub-cellular structure has been observed with transmission electron microscopy (TEM) of thin sections, but the whole three-dimensional (3D) structure has not been reconstructed.
Oi et al. examine whole rice mesophyll cells using a Focus Ion Beam Scanning Electron Microscope (FIB-SEM). The 3-D reconstructed cell models were discoid-shaped, comprising several lobes around the cell periphery, with chloroplasts spread as sheets along the cell lobes and occupying half of the cell volume. The cell shape and chloroplast distribution enhances the leaf area available for CO2 absorption.
Oi, T., Enomoto, S., Nakao, T., Arai, S., Yamane, K., & Taniguchi, M. (2017). Three-dimensional intracellular structure of a whole rice mesophyll cell observed with FIB-SEM. Annals of Botany, 120(1), 21–28. https://doi.org/10.1093/aob/mcx036
Discover the most popular botany headlines and scientific papers every Monday morning, as chosen by @BotanyOne's Twitter followers.
After signing up, we'll send an email to your inbox to check it is you who wants to sign up to the list. You'll need to click on a link in this email to confirm your subscription. It's our way of making sure we're not accidentally sending you spam.