title: Involvement of auxin pathways in modulating root architecture during beneficial plant-microorganism interactions.
abstract: 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 auxin-signalling 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 inter-species 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.
authors.affiliation: Biosciences Division, Oak Ridge National Laboratory, One Bethel Valley Road, Oak Ridge, TN 37831, USA.
authors.forename: Poornima
authors.initials: P
authors.lastname: Sukumar
authors.forename: Valérie
authors.initials: V
authors.lastname: Legué
authors.forename: Alice
authors.initials: A
authors.lastname: Vayssières
authors.forename: Francis
authors.initials: F
authors.lastname: Martin
authors.forename: Gerald A
authors.initials: GA
authors.lastname: Tuskan
authors.forename: Udaya C
authors.initials: UC
authors.lastname: Kalluri
mesh_terms: D001692:Biological Transport; D018920:Coculture Techniques; D018506:Gene Expression Regulation, Plant; D007210:Indoleacetic Acids / Q000378:metabolism*; D059828:Plant Cells / Q000378:metabolism / Q000382:microbiology; D010937:Plant Growth Regulators / Q000096:biosynthesis / Q000235:genetics; D055170:Plant Root Nodulation; D018517:Plant Roots / Q000033:anatomy & histology* / Q000235:genetics / Q000378:metabolism / Q000382:microbiology; D012231:Rhizobium / Q000254:growth & development; D015398:Signal Transduction; D013559:Symbiosis
chemical_list: D007210:Indoleacetic Acids; D010937:Plant Growth Regulators; C030737:indoleacetic acid