PT  - JOURNAL ARTICLE
AU  - Feng Zhao
AU  - Fei Du
AU  - Hadrien Oliveri
AU  - Lüwen Zhou
AU  - Olivier Ali
AU  - Wenqian Chen
AU  - Shiliang Feng
AU  - Qingqing Wang
AU  - Shouqin Lü
AU  - Mian Long
AU  - René Schneider
AU  - Arun Sampathkumar
AU  - Christophe Godin
AU  - Jan Traas
AU  - Yuling Jiao
TI  - A microtubule-mediated mechanical feedback controls leaf blade development in three dimensions
AID  - 10.1101/604710
DP  - 2019 Jan 01
TA  - bioRxiv
PG  - 604710
4099  - http://biorxiv.org/content/early/2019/04/11/604710.short
4100  - http://biorxiv.org/content/early/2019/04/11/604710.full
AB  - Many plant species have thin leaf blades, which is an important adaptation that optimizes the exchanges with the environment. Here, we provide evidence that their three-dimensional geometry is governed by microtubule alignment along mechanical stress patterns in internal walls. Depending on the primary shape of the primordium, this process has the potential to amplify an initial degree of flatness, or promote the formation of nearly axisymmetric, mostly elongating organs, such as stems and roots. This mechanism may explain leaf evolution from branches, which is alternative to Zimmermann’s influential, but widely questioned, telome theory.One Sentence Summary Mechanical feedback controls leaf development in three dimensions