scholarly journals Variation in Expression and Protein Localization of the PIN Family of Auxin Efflux Facilitator Proteins in Flavonoid Mutants with Altered Auxin Transport in Arabidopsis thaliana

2004 ◽  
Vol 16 (7) ◽  
pp. 1898-1911 ◽  
Author(s):  
Wendy Ann Peer ◽  
Anindita Bandyopadhyay ◽  
Joshua J. Blakeslee ◽  
Srinivas N. Makam ◽  
Rujin J. Chen ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Auxin Transport ◽  
Protein Localization

scholarly journals Control of auxin-regulated root development by the Arabidopsis thaliana SHY2/IAA3 gene

Development ◽  
1999 ◽  
Vol 126 (4) ◽  
pp. 711-721 ◽  
Author(s):  
Q. Tian ◽  
J.W. Reed
Keyword(s):  
Arabidopsis Thaliana ◽  
Lateral Root ◽  
Tissue Specificity ◽  
Plant Hormone ◽  
Root Formation ◽  
Auxin Transport ◽  
Feedback Regulation ◽  
Loss Of Function ◽  
Leaf Formation ◽  
Induced Genes

The plant hormone auxin controls many aspects of development and acts in part by inducing expression of various genes. Arabidopsis thaliana semidominant shy2 (short hypocotyl) mutations cause leaf formation in dark-grown plants, suggesting that SHY2 has an important role in regulating development. Here we show that the SHY2 gene encodes IAA3, a previously known member of the Aux/IAA family of auxin-induced genes. Dominant shy2 mutations cause amino acid changes in domain II, conserved among all members of this family. We isolated loss-of-function shy2 alleles including a putative null mutation. Gain-of-function and loss-of-function shy2 mutations affect auxin-dependent root growth, lateral root formation, and timing of gravitropism, indicating that SHY2/IAA3 regulates multiple auxin responses in roots. The phenotypes suggest that SHY2/IAA3 may activate some auxin responses and repress others. Models invoking tissue-specificity, feedback regulation, or control of auxin transport may explain these results.

scholarly journals EIR1, a root-specific protein involved in auxin transport, is required for gravitropism in Arabidopsis thaliana

1998 ◽  
Vol 12 (14) ◽  
pp. 2175-2187 ◽  
Author(s):  
C. Luschnig ◽  
R. A. Gaxiola ◽  
P. Grisafi ◽  
G. R. Fink
Keyword(s):  
Arabidopsis Thaliana ◽  
Auxin Transport ◽  
Specific Protein

Influence of Sublethal Concentrations of Herbicides and Growth Regulators on Mouseearcress (Arabidopsis thaliana) Progeny

Weed Science ◽  
1985 ◽  
Vol 33 (4) ◽  
pp. 430-434 ◽  
Author(s):  
Ron Henzell ◽  
John Phillips ◽  
Peter Diggle
Keyword(s):  
Arabidopsis Thaliana ◽  
Electron Transport ◽  
Plant Growth ◽  
Growth Regulators ◽  
Growth And Development ◽  
Auxin Transport ◽  
Photosynthetic Electron Transport ◽  
Persistent Effect ◽  
Transport Inhibitors ◽  
Sublethal Concentrations

The influence of sublethal levels of a number of herbicides and plant growth regulators on the germinability of the seeds and the growth and development of seedlings of mouseearcress [Arabidopsis thaliana(L.) Heynh. ♯ ARBTH] was determined. Only 7 of the 22 chemicals tested had a persistent effect on progeny. Amitrole (3-amino-s-triazole) was one of the most effective compounds. It caused a characteristic bleaching only in shoot tips and pods in parent plants and appeared to act directly on the progeny by accumulation in the seed. Two auxin transport inhibitors, TIBA (2,3,5-triiodobenzoic acid) and CPII (5-O-carboxyphenyl-3-phenylisoxazole), and four of the six photosynthetic electron transport inhibitors included in the study also affected progeny. They appeared to act indirectly by interfering with seed development.

scholarly journals Late ribosomal protein localization in Arabidopsis thaliana differs to that in Saccharomyces cerevisiae

FEBS Open Bio ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 1437-1444
Author(s):  
Denise Palm ◽  
Deniz Streit ◽  
Maike Ruprecht ◽  
Stefan Simm ◽  
Christian Scharf ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Arabidopsis Thaliana ◽  
Ribosomal Protein ◽  
Protein Localization

scholarly journals Polarization of PIN3-dependent auxin transport for hypocotyl gravitropic response in Arabidopsis thaliana

2011 ◽  
Vol 67 (5) ◽  
pp. 817-826 ◽  
Author(s):  
Hana Rakusová ◽  
Javier Gallego-Bartolomé ◽  
Marleen Vanstraelen ◽  
Hélène S. Robert ◽  
David Alabadí ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Auxin Transport ◽  
Gravitropic Response

scholarly journals iDePP: a genetically encoded system for the inducible depletion of PI(4,5)P2 in Arabidopsis thaliana

2020 ◽  
Author(s):  
Mehdi Doumane ◽  
Léia Colin ◽  
Alexis Lebecq ◽  
Aurélie Fangain ◽  
Joseph Bareille ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Plasma Membrane ◽  
Protein Localization ◽  
Cortical Microtubule ◽  
Plant Cells ◽  
Actin Dynamics ◽  
Animal Cells ◽  
Compensatory Mechanisms ◽  
Microtubule Organization ◽  
Membrane Contact Sites

ABSTRACTPhosphatidylinositol 4,5-bisphosphate [PI(4,5)P2] is a low abundant lipid present at the plasma membrane of eukaryotic cells. Extensive studies in animal cells revealed the pleiotropic functions of PI(4,5)P2. In plant cells, PI(4,5)P2 is involved in various cellular processes including the regulation of cell polarity and tip growth, clathrin-mediated endocytosis, polar auxin transport, actin dynamics or membrane-contact sites. To date, most studies investigating the role of PI(4,5)P2 in plants have relied on mutants lacking enzymes responsible for PI(4,5)P2 synthesis and degradation. However, such genetic perturbations only allow steady-state analysis of plants undergoing their life cycle in PI(4,5)P2 deficient conditions and the corresponding mutants are likely to induce a range of non-causal (untargeted) effects driven by compensatory mechanisms. In addition, there are no small molecule inhibitors that are available in plants to specifically block the production of this lipid. Thus, there is currently no system to fine tune PI(4,5)P2 content in plant cells. Here we report a genetically encoded and inducible synthetic system, iDePP (Inducible Depletion of PI(4,5)P2 in Plants), that efficiently removes PI(4,5)P2 from the plasma membrane in different organs of Arabidopsis thaliana, including root meristem, root hair and shoot apical meristem. We show that iDePP allows the inducible depletion of PI(4,5)P2 in less than three hours. Using this strategy, we reveal that PI(4,5)P2 is critical for cortical microtubule organization. Together, we propose that iDePP is a simple and efficient genetic tool to test the importance of PI(4,5)P2 in given cellular or developmental responses but also to evaluate the importance of this lipid in protein localization.Research OrganismA. thaliana

MATHEMATICAL MODELING OF AUXIN TRANSPORT IN PROTOXYLEM AND PROTOPHLOEM OF ARABIDOPSIS THALIANA ROOT TIPS

2013 ◽  
Vol 11 (01) ◽  
pp. 1340010 ◽  
Author(s):  
EKATERINA S. NOVOSELOVA ◽  
VICTORIA V. MIRONOVA ◽  
NADYA A. OMELYANCHUK ◽  
FEDOR V. KAZANTSEV ◽  
VITALY A. LIKHOSHVAI
Keyword(s):  
Arabidopsis Thaliana ◽  
Active Transport ◽  
Auxin Transport ◽  
Positional Information ◽  
Root Tip ◽  
Root Tips ◽  
Auxin Distribution ◽  
A Cell ◽  
Optimal Values ◽  
Main Regulator

Phytohormone auxin is the main regulator of plant growth and development. Nonuniform auxin distribution in plant tissue sets positional information, which determines morphogenesis. Auxin is transported in tissue by means of diffusion and active transport through the cell membrane. There is a number of auxin carriers performing its influx into a cell (AUX\LAX family) or efflux from a cell (PIN, PGP families). The paper presents mathematical models for auxin transport in vascular tissues of Arabidopsis thaliana L.root tip, namely protophloem and protoxylem. Tissue specificity of auxin active transport was considered in these models. There is PIN-mediated auxin efflux in both protoxylem and protophloem, but AUX1-mediated influx exists only in protophloem. Optimal values of parameters were adjusted for model solutions to fit the experimentally observed auxin distributions in the root tip. Based on simulation results we predicted that shoot-derived auxin flow to protophloem is lower than one to protoxylem, and the efficiency of PIN-mediated auxin transport in protophloem is higher than in protoxylem. In summary, our simulation showed that despite the same auxin distribution pattern, provascular tissues in the root tip differ in dynamics of auxin transport.

scholarly journals CLASP Interacts with Sorting Nexin 1 to Link Microtubules and Auxin Transport via PIN2 Recycling in Arabidopsis thaliana

2013 ◽  
Vol 24 (6) ◽  
pp. 649-659 ◽  
Author(s):  
Chris Ambrose ◽  
Yuan Ruan ◽  
John Gardiner ◽  
Laura M. Tamblyn ◽  
Amanda Catching ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Auxin Transport ◽  
Sorting Nexin ◽  
Sorting Nexin 1

scholarly journals The Arabidopsis thaliana AGRAVITROPIC 1 gene encodes a component of the polar-auxin-transport efflux carrier

1998 ◽  
Vol 95 (25) ◽  
pp. 15112-15117 ◽  
Author(s):  
R. Chen ◽  
P. Hilson ◽  
J. Sedbrook ◽  
E. Rosen ◽  
T. Caspar ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Auxin Transport ◽  
Polar Auxin Transport
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