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Open AccessJournal ArticleDOI

Auxin metabolism and homeostasis during plant development.

Karin Ljung
- 01 Mar 2013 - 
- Vol. 140, Iss: 5, pp 943-950
TLDR
Recent discoveries have started to shed light on the processes that regulate the synthesis and degradation of this important plant hormone Auxin.
Abstract
Auxin plays important roles during the entire life span of a plant. This small organic acid influences cell division, cell elongation and cell differentiation, and has great impact on the final shape and function of cells and tissues in all higher plants. Auxin metabolism is not well understood but recent discoveries, reviewed here, have started to shed light on the processes that regulate the synthesis and degradation of this important plant hormone.

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Citations
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Sugar signals and the control of plant growth and development

TL;DR: This review focuses on information presented in the past 2 years on key players in sugar-mediated plant growth regulation, with emphasis on trehalose 6-phosphate, target of rapamycin kinase, and Snf1-related kinase 1 regulatory systems.
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The Yin-Yang of Hormones: Cytokinin and Auxin Interactions in Plant Development

TL;DR: This review focuses on the interaction of auxin and cytokinin in several developmental contexts, including its role in regulating apical meristems, the patterning of the root, the development of the gynoecium and female gametophyte, and organogenesis and phyllotaxy in the shoot.
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Phytohormones and Beneficial Microbes: Essential Components for Plants to Balance Stress and Fitness.

TL;DR: This review highlights important plant morpho-physiological traits that can be exploited to identify the positive effects of phytohormones on stress tolerance, and will be helpful to plant physiologists and agricultural microbiologists in designing strategies and tools for the development of broad spectrum microbial inoculants supporting sustainable crop production under hostile environments.
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Biofertilizers: a potential approach for sustainable agriculture development

TL;DR: The present review elucidates various mechanisms that have been exerted by biofertilizers in order to promote plant growth and also provides protection against different plant pathogens as well as discusses the important roles and applications of biof fertilizer in different sectors including agriculture, bioremediation, and ecology.
Journal ArticleDOI

Structural Basis for DNA Binding Specificity by the Auxin-Dependent ARF Transcription Factors.

TL;DR: It is shown that ARF DNA-binding domains also homodimerize to generate cooperative DNA binding, which is critical for in vivo ARF5/MP function and provides an atomic-scale mechanistic model for specificity in auxin response.
References
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Journal ArticleDOI

Auxin: regulation, action, and interaction.

TL;DR: Nearly six decades after the structural elucidation of IAA, many aspects of auxin metabolism, transport and signalling are well established; however, more than a few fundamental questions and innumerable details remain unresolved.
Journal ArticleDOI

The F-box protein TIR1 is an auxin receptor

TL;DR: TIR1 is an auxin receptor that mediates Aux/IAA degradation and auxin-regulated transcription and the loss of TIR1 and three related F-box proteins eliminates saturable auxin binding in plant extracts.
Journal ArticleDOI

The PIN auxin efflux facilitator network controls growth and patterning in Arabidopsis roots

TL;DR: This work shows that five PIN genes collectively control auxin distribution to regulate cell division and cell expansion in the primary root and reveals an interaction network of auxin transport facilitators and root fate determinants that control patterning and growth of the root primordium.
Journal ArticleDOI

Efflux-dependent auxin gradients establish the apical–basal axis of Arabidopsis

TL;DR: The results indicate how the establishment of cell polarity, polar auxin efflux and local auxin response result in apical–basal axis formation of the embryo, and thus determine the axiality of the adult plant.
Journal ArticleDOI

Indole-3-acetic acid in microbial and microorganism-plant signaling.

TL;DR: The fact that bacteria use this phytohormone to interact with plants as part of their colonization strategy, including phyto-stimulation and circumvention of basal plant defense mechanisms, is highlighted.
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