Yan, M., Fan, W., Meng, Y., Zhao, J., Yang, W., Xu, Z., Gao, Y., Zhuang, H., Zhou, W., Wang, Y., Huang, Q., Yuan, L., Wang, H., Yang, J. (2026). A conserved ethylene-triggered cell death mechanism may underlie hollow stem formation across plant species. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2530957123