Why plants need more than one type of auxin

0364098 - ÚEB 2012 RIV IE eng J - Journal Article
Simon, Sibu - Petrášek, Jan
Why plants need more than one type of auxin.
Plant Science. Roč. 180, č. 3 (2011), s. 454-460. ISSN 0168-9452. E-ISSN 1873-2259
R&D Projects: GA MŠMT(CZ) LC06034
Institutional research plan: CEZ:AV0Z50380511
Keywords : Auxin * IAA * 4-Cl-IAA * IBA * PAA
Subject RIV: ED - Physiology
Impact factor: 2.945, year: 2011

The versatile functionality and physiological importance of the phytohormone auxin is a major focus of attention in contemporary plant science. Recent studies have substantially contributed to our understanding of the molecular mechanisms underlying the physiological role of auxin in plant development. The mechanism of action has been described to varying degrees for the major endogenous auxin indole-3-acetic acid (IAA) and for the synthetic auxins 2,4-dichlorophenoxyacetic acid (2,4-D) and naphthalene-1-acetic acid (NAA). However, in addition to IAA, plants synthesize three other compounds that are commonly regarded as “endogenous auxins”, namely, 4-chloroindole-3-acetic acid (4-Cl-IAA), indole-3-butyric acid (IBA) and phenylacetic acid (PAA). Although a spectrum of auxinic effects has been identified for all these as well as several other endogenous compounds, we remain largely ignorant of many aspects of their mechanisms of action.
Permanent Link: http://hdl.handle.net/11104/0199668