Regulation of auxin transport in pea (Pisum sativum L.) by phenylacetic acid: inhibition of polar auxin transport in intact plants and stem segments

Planta ◽  
1987 ◽  
Vol 172 (3) ◽  
pp. 408-416 ◽  
Author(s):  
D. A. Morris ◽  
Claire F. Johnson
Keyword(s):  
Pisum Sativum ◽  
Phenylacetic Acid ◽  
Auxin Transport ◽  
Polar Auxin Transport ◽  
Acid Inhibition ◽  
Pisum Sativum L ◽  
Intact Plants ◽  
Stem Segments

Components of auxin transport in stem segments of Pisum sativum L.

Planta ◽  
1978 ◽  
Vol 142 (2) ◽  
pp. 211-219 ◽  
Author(s):  
Peter J. Davies ◽  
Philip H. Rubery
Keyword(s):  
Pisum Sativum ◽  
Auxin Transport ◽  
Pisum Sativum L ◽  
Stem Segments

Auxin transport in intact pea seedlings (Pisum sativum L.): The inhibition of transport by 2,3,5-triiodobenzoic acid

Planta ◽  
1973 ◽  
Vol 110 (2) ◽  
pp. 173-182 ◽  
Author(s):  
D. A. Morris ◽  
Golben Othman Kadir ◽  
A. J. Barry
Keyword(s):  
Pisum Sativum ◽  
Auxin Transport ◽  
Triiodobenzoic Acid ◽  
Pisum Sativum L ◽  
Pea Seedlings

Pathways of auxin transport in the intact pea seedling (Pisum sativum L.)

Planta ◽  
1972 ◽  
Vol 107 (2) ◽  
pp. 171-182 ◽  
Author(s):  
D. A. Morris ◽  
Golben Othman Kadir
Keyword(s):  
Pisum Sativum ◽  
Auxin Transport ◽  
Pisum Sativum L ◽  
Pea Seedling

Morphoregulative Effects of Phenylacetic Acid in Pea Seedlings (Pisum sativum L.)

1983 ◽  
Vol 178 (6-7) ◽  
pp. 493-501 ◽  
Author(s):  
S. Procházka ◽  
V. Černoch ◽  
J. Blažková ◽  
M. Dundelová
Keyword(s):  
Pisum Sativum ◽  
Phenylacetic Acid ◽  
Pisum Sativum L ◽  
Pea Seedlings

scholarly journals Cytokinins and polar transport of auxin in axillary pea buds

2010 ◽  
Vol 58 (4) ◽  
pp. 79-88 ◽  
Author(s):  
Petr Kalousek ◽  
Dagmar Buchtová ◽  
Jozef Balla ◽  
Vilém Reinöhl ◽  
Stanislav Procházka
Keyword(s):  
Apical Dominance ◽  
Auxin Transport ◽  
Polar Auxin Transport ◽  
Axillary Buds ◽  
Polar Transport ◽  
Exogenous Application ◽  
Intact Plants ◽  
Key Factor ◽  
Basal Pole ◽  
Auxin Carrier

The influence of cytokinin on auxin transport during release of axillary buds from apical dominance was studied. Expression of auxin-carrier coding genes PsAUX1 (AUXIN RESISTANT 1) and PsPIN1 (PIN-FORMED 1) was explored in axillary buds of the 2nd node of 7-day pea plants (Pisum sativum L.) cv. Vladan after decapitation or after exogenous application of benzyladenine (6-benzylaminopurine) onto axillary buds of intact plants. Localization of the PsPIN1 protein, the key factor for polar transport of auxin in axillary buds, was visualised by immunohistochemistry. After exogenous application of cytokinin the expression of PsAUX1 and PsPIN1 rapidly increased with a simultaneous rapid decrease in PsDRM1 and PsAD1 expression – genes related to bud dormancy. The same changes in expression were observed after decapitation, however they were markedly slower. The PsPIN1 auxin efflux carrier in the inhibited axillary buds of intact plants was localised in a non-polar manner. After exogenous application of cytokinin gradual polarisation of the PsPIN1 protein occurred on the basal pole of polar auxin transport competent cells. Despite the fact that direct auxin application to buds of intact plants led to an increase in PsAUX1 and PsPIN1 expression, the buds remained dormant (non-growing) what was accompanied by persistent expression of the dormancy markers PsDRM1 and PsAD1. The results indicate a possible effect of cytokinins on biosynthesis, and/or transport of auxin in axillary buds and they highlight the importance of auxin-cytokinin crosstalk in the regulation of bud outgrowth after breaking of apical dominance.

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