Sukumar, P. et al., 2012. Plant, Cell and Environment

Involvement of auxin pathways in modulating root architecture during beneficial plant-microorganism interactions

Poornima Sukumar, Valérie Legué, Alice Vayssières, Francis Martin, Gerald A. Tuskan, and Udaya C. Kalluri
12 November 2012, Plant, Cell and Environment 36(5): 909-919, doi: 10.1111/pce.12036


A wide variety of microorganisms known to produce auxin and auxin precursors form beneficial relationships with plants and alter host root development. Moreover, other signals produced by microorganisms affect auxin pathways in host plants. However, the precise role of auxin and auxinsignalling pathways in modulating plant–microbe interactions is unknown. Dissecting out the auxin synthesis, transport and signalling pathways resulting in the characteristic molecular, physiological and developmental response in plants will further illuminate upon how these intriguing interspecies interactions of environmental, ecological and economic significance occur. The present review seeks to survey and summarize the scattered evidence in support of known host root modifications brought about by beneficial microorganisms and implicate the role of auxin synthesis, transport and signal transduction in modulating beneficial effects in plants. Finally, through a synthesis of the current body of work, we present outstanding challenges and potential future research directions on studies related to auxin signalling in plant–microbe interactions.


SUKUMAR, P., LEGUÉ, V., VAYSSIÈRES, A., MARTIN, F., TUSKAN, G. A. and KALLURI, U. C. (2012), Involvement of auxin pathways in modulating root architecture during beneficial plant–microorganism interactions. Plant, Cell & Environment. doi: 10.1111/pce.12036