Auxin Transport Inhibitors. II. 2-(1-Pyrenol)Benzoic Acid, a Potent Inhibitor of Polar Auxin Transport

1977 ◽  
Vol 4 (3) ◽  
pp. 321 ◽  
Author(s):  
GF Katekar ◽  
AE Geissler
Keyword(s):  
Benzoic Acid ◽  
Auxin Transport ◽  
Indoleacetic Acid ◽  
Potent Inhibitor ◽  
Polar Auxin Transport ◽  
Active Inhibitor ◽  
Polar Transport ◽  
Highly Active ◽  
Transport Inhibitors ◽  
Auxin Transport Inhibitors

2-(1-Pyrenoyl)benzoic acid is shown to be a highly active inhibitor of auxin transport by its ability to prevent the polar transport of indoleacetic acid in bean petioles. It is comparable in activity to other known auxin transport inhibitors, and also affects apical dominance and the geotropic and phototropic responses.

scholarly journals Auxin minimum triggers the developmental switch from cell division to cell differentiation in the Arabidopsis root

2017 ◽  
Vol 114 (36) ◽  
pp. E7641-E7649 ◽  
Author(s):  
Riccardo Di Mambro ◽  
Micol De Ruvo ◽  
Elena Pacifici ◽  
Elena Salvi ◽  
Rosangela Sozzani ◽  
...  
Keyword(s):  
Cell Division ◽  
Auxin Transport ◽  
Positional Information ◽  
Polar Auxin Transport ◽  
Arabidopsis Root ◽  
Polar Transport ◽  
Stringent Control ◽  
Auxin Polar Transport ◽  
Multicellular Organisms ◽  
Developmental Switch

In multicellular organisms, a stringent control of the transition between cell division and differentiation is crucial for correct tissue and organ development. In the Arabidopsis root, the boundary between dividing and differentiating cells is positioned by the antagonistic interaction of the hormones auxin and cytokinin. Cytokinin affects polar auxin transport, but how this impacts the positional information required to establish this tissue boundary, is still unknown. By combining computational modeling with molecular genetics, we show that boundary formation is dependent on cytokinin’s control on auxin polar transport and degradation. The regulation of both processes shapes the auxin profile in a well-defined auxin minimum. This auxin minimum positions the boundary between dividing and differentiating cells, acting as a trigger for this developmental transition, thus controlling meristem size.

scholarly journals Novel auxin transport inhibitors phenocopy the auxin influx carrier mutation aux1

2001 ◽  
Vol 25 (4) ◽  
pp. 399-406 ◽  
Author(s):  
Geraint Parry ◽  
Alain Delbarre ◽  
Alan Marchant ◽  
Ranjan Swarup ◽  
Richard Napier ◽  
...  
Keyword(s):  
Auxin Transport ◽  
Transport Inhibitors ◽  
Auxin Transport Inhibitors ◽  
Auxin Influx Carrier

scholarly journals Abscission Responses to Moisture Stress, Auxin Transport Inhibitors, and Ethephon

1977 ◽  
Vol 59 (4) ◽  
pp. 710-712 ◽  
Author(s):  
Page W. Morgan ◽  
Wayne R. Jordan ◽  
Tom L. Davenport ◽  
James I. Durham
Keyword(s):  
Auxin Transport ◽  
Moisture Stress ◽  
Transport Inhibitors ◽  
Auxin Transport Inhibitors
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