biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 48:395-399, 2004 | DOI: 10.1023/B:BIOP.0000041092.40705.6b

Effects of Pre-Treatments with Abscisic Acid and/or Benzyladenine on Gas Exchange of French Bean, Sugar Beet, and Maize Leaves During Water Stress and After Rehydration

J. Pospíšilová1, P. Baťková2
1 Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Praha 6, Czech Republic, e-mail
2 Charles University, Faculty of Science, Praha 2, Czech Republic

Net photosynthetic rate (PN), transpiration rate (E), and stomatal conductance (gs) during water stress and after rehydration were measured in Phaseolus vulgaris, Beta vulgaris, and Zea mays. Immediately before imposition of water stress by cessation of watering, plants were irrigated with water (control), 100 μM abscisic acid (ABA), and/or 10 μM N6-benzyladenine (BA). In all three species, application of ABA decreased gs, E, and PN already 1 h after application. However, during water stress gs, E, and PN in plants pre-treated with ABA remained higher than in plants pre-treated with water. Positive effects of ABA application were observed also after rehydration. In contrast, the effects of pre-treatment with BA were species-specific. While in bean plants BA application ameliorated negative effect of water stress, only very slight effects were observed in maize, and in sugar beet BA even aggravated the effects of water stress.

Keywords: Beta vulgaris; net photosynthetic rate; Phaseolus vulgaris; stomatal conductance; transpiration rate; water use efficiency; Zea mays
Subjects: abscisic acid (ABA); Beta vulgaris; cytokinins; French bean, water stress, rehydration; gas exchange, water stress, benzyladenine; intrinsic water use efficiency, gas exchange, water stress; maize, water stress, rehydration; Phaseolus vulgaris; stomatal conductance, gas exchange, water stress; sugar beet, water stress, rehydration; water stress, rehydration; Zea mays

Published: September 1, 2004  Show citation

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Pospíšilová, J., & Baťková, P. (2004). Effects of Pre-Treatments with Abscisic Acid and/or Benzyladenine on Gas Exchange of French Bean, Sugar Beet, and Maize Leaves During Water Stress and After Rehydration. Biologia plantarum, 48(3), 395-399. doi: 10.1023/B:BIOP.0000041092.40705.6b
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