Siamsa Chaumet Doyle

Staff scientist at the Department of Forest Genetics and Plant Physiology at Umeå Plant Science Centre (UPSC). Researcher in the group of Stéphanie Robert.

A drought stress-induced MYB transcription factor regulates pavement cell shape in leaves of European aspen (Populus tremula) (2026). Liu S*, Doyle SM*, Robinson KM, Rahneshan Z, Street NR, Robert S. New Phytol 251(5):2688-2705. *Joint first authors.

RACK1A positively regulates opening of the apical hook in Arabidopsis thaliana via suppression of its auxin response gradient (2025). Ma Q*, Liu S*, Doyle SM*, Raggi S, Pařízková B, Barange DK, Ratnakaram H, Wilkinson EG, Crespo Garcia I, Bygdell J, Wingsle G, Boer DR, Strader LC, Almqkist F, Novák O, Robert S. Proc Natl Acad Sci U S A 122(30):e2407224122. *Joint first authors.

Cell biology of the leaf epidermis: Fate specification, morphogenesis and coordination (2022). Zuch DT, Doyle SM, Majda M, Smith RS, Robert S, Torii KU. Plant Cell 34:209-227.

Solving the puzzle of shape regulation in plant epidermal pavement cells (2021). Liu S, Jobert F, Rahneshan Z, Doyle SM, Robert S. Ann Rev Plant Biol 72:525-550.

A network of stress-related genes regulates hypocotyl elongation downstream of selective auxin perception (2021). Rigal A, Doyle SM, Ritter A, Raggi S, Vain T, O'Brien JA, Goossens A, Pauwels L, Robert S. Plant Phys 187(1):430-445.

Fluctuating auxin response gradients determine pavement cell shape acquisition (202o). Grones P, Majda M, Doyle SM, Van Damme D, Robert S. Proc Natl Acad Sci U S A 117(27):16027-16034.

A role for the auxin precursor anthranilic acid in root gravitropism via regulation of PIN-FORMED protein polarity and relocalisation in Arabidopsis (2019). Doyle SM, Rigal A, Grones P, Karady M, Barange DK, Majda M, Pařízková B, Karampelias M, Zwiewka M, Pencik A, Almqvist F, Ljung K, Novák O, Robert S. New Phytol 223(3):1420-1432.

Selective auxin agonists induce specific AUX/IAA protein degradation to modulate plant development (2019). Vain T, Raggi S, Ferro N, Barange DK, Kieffer M, Ma Q, Doyle SM, Thelander M, Pařízková B, Novák O, Ismail A, Enquist PA, Rigal A, Łangowska M, Ramans Harborough S, Zhang Y, Ljung K, Callis J, Almqvist F, Kepinski S, Estelle M, Pauwels L, Robert S. Proc Natl Acad Sci U S A 116(13):6463-6472.

An early secretory pathway mediated by GNOM-LIKE 1 and GNOM is essential for basal polarity establishment in Arabidopsis thaliana (2015). Doyle SM, Haeger A, Vain T, Rigal A, Viotti C, Łangowska M, Ma Q, Friml J, Raikhel NV, Hicks GR, Robert S. Proc Natl Acad Sci U S A 112(7):E806-15.