REAGENT or RESOURCE	SOURCE	IDENTIFIER
Chemicals, Peptides, and Recombinant Proteins
Propidium iodide (PI)	Sigma-Aldrich	87-51-4
Indole-3-Acetic Acid (IAA)	Sigma-Aldrich	I0901.0100
Plant Preservative Mixture (PPM)	Plant Cell Technology	250
1-N-naphthylphthalamic acid (NPA)	Sigma-Aldrich	132-66-1
Roti Histol	Roth	6640
Experimental Models: Organisms/Strains
A. thaliana: pin1 (RCR-genotyped to be insertion GABI-Kat -051A10)	Kierzkowski et al., 2013	Cris Kuhlemeier, UniBe
A. thaliana: cuc2-3	Nikovics et al., 2006	Patrick Laufs, Institut Jean-Pierre Bourgin
A. thaliana: pUBQ10::acyl:TDT	Segonzac et al., 2012	Elliot Meyerowitz, Caltech
A. thaliana: pUBQ10::acyl:YFP	Willis et al., 2016	Raymond Wightman, University of Cambridge
A. thaliana: pin1 x pUBQ10::acyl:YFP	This study	N/A
A. thaliana: cuc2-3 x pUBQ10::acyl:YFP	This study	N/A
A. thaliana: pBLS::3xGFP	This study	N/A
A. thaliana: pDR5::GFP	Friml et al., 2003	Gerd Jurgens, Max Planck Institute for Developmental Biology
A. thaliana: pUBQ10::acyl:TDT x pCUC2::CUC2:VENUS x pDR5::GFP	This study	N/A
A. thaliana: pBLS≫STM:VENUS	This study	N/A
A. thaliana: pPIN1::PIN1:GFP	Heisler et al., 2005	N/A
A. thaliana: p35S::KRP2	This study	NA
A. thaliana: RCOg:VENUS (translational fusion of VENUS to RCO in genomic context in pMLBART)	Vuolo et al., 2016	Miltos Tsiantis, MPIPZ
A. thaliana: pBLS::STM	Shani et al., 2009	Yuval Eshed, Weizmann Institute Naomi Ori, Hebrew University
A. thaliana: pBLS::STM x pUBQ10::acyl:YFP	This paper	N/A
A. thaliana: RCOg	Vlad et al., 2014	Miltos Tsiantis, MPIPZ
A. thaliana: RCOg x pUBQ10::acyl:YFP	This study	N/A
A. thaliana: p35S::KRP2 x pUBQ10::acyl:YFP	This study	N/A
A. thaliana: pBLS::STM x pAtPIN1::PIN1:GFP	This study	N/A
A. thaliana: RCOg x pPIN1::PIN1:GFP	This study	N/A
A. thaliana: RCOg:VENUS x pBLS::STM	This study	N/A
C. hirsuta: rco	Vlad et al., 2014	Miltos Tsiantis, MPIPZ
C. hirsuta: stm	Rast-Somssich et al., 2015	Miltos Tsiantis, MPIPZ
C. hirsuta: stm x pUBQ10::acyl:YFP	This study	N/A
C. hirsuta: rco x pUBQ10::acyl:YFP	This study	N/A
C. hirsuta: pChSTM::3xNLS-VENUS	This study	N/A
C. hirsuta: pUBQ10::acyl:YFP	This study	N/A
C. hirsuta: pPIN1::PIN1:GFP	Barkoulas et al., 2008	Miltos Tsiantis, MPIPZ
C. hirsuta: pML1::PIN1:GFP x DR5::VENUS	This study	N/A
C. hirsuta: stm x pPIN1::PIN1:GFP	This study	N/A
C. hirsuta: rco x pPIN1::PIN1:GFP	This study	N/A
C. hirsuta: pChSTM::ChSTM:VENUS	Rast-Somssich et al., 2015	Miltos Tsiantis, MPIPZ
Recombinant DNA
pUBQ10::acyl:YFP	Willis et al., 2016	Raymond Wightman, University of Cambridge
pBLS::STM; pBLS::LhG4	Shani et al., 2009	Yuval Eshed, Weizmann Institute Naomi Ori, Hebrew University
pPIN1::PIN1:GFP	Heisler et al., 2005	N/A
pML1::PIN1:GFP	Bilsborough et al., 2011	Miltos Tsiantis, MPIPZ
pBLS::3xGFP	This paper	N/A
pChSTM::3xNLS-VENUS	This paper	N/A
OP::STM:VENUS	This paper	N/A
pMLBART- STM:VENUS	Heisler et al., 2005	N/A
pVTOp	Hay et al., 2006 and references therein	Miltos Tsiantis, MPIPZ
Software and Algorithms
Fiji	NIH	https://fiji.sc/
Physically based simulations (C++/VVe)	This paper	Available upon request
Geometric models of margin development (L+C/lpfg)	This paper	Available upon request
MorphoGraphX	Barbier de Reuille et al., 2015	http://www.mpipz.mpg.de/MorphoGraphX/
VVe	Smith et al., 2004	http://www.algorithmicbotany.org
LPFG	Karwowski and Prusinkiewicz, 2003	http://www.algorithmicbotany.org
Lineage tracing script (Python)	Barbier de Reuille et al., 2015	http://www.mpipz.mpg.de/MorphoGraphX
FantaMoprh	Abrosoft	http://www.fantamorph.com/