On the Role of Abscisic Acid in the Adaptation of Tobacco and Potato Plants to Water Stress

1995 ◽  
pp. 3613-3616 ◽  
Author(s):  
D. Büssis ◽  
F. Kauder ◽  
D. Heineke
Keyword(s):  
Abscisic Acid ◽  
Water Stress ◽  
Potato Plants

Inhibition of cambial activity in Abies balsamea by internal water stress: role of abscisic acid

1975 ◽  
Vol 53 (24) ◽  
pp. 3041-3050 ◽  
Author(s):  
C. H. A. Little
Keyword(s):  
Abscisic Acid ◽  
Water Stress ◽  
Indoleacetic Acid ◽  
Stomatal Closure ◽  
Abies Balsamea ◽  
Cambial Activity ◽  
Inhibitory Effect ◽  
Internal Water ◽  
Endogenous Aba

In experiments with attached and detached shoots of balsam fir, Abies balsamea L., synthetic (±)abscisic acid (ABA) (1) reduced photosynthesis and transpiration by inducing stomatal closure, (2) inhibited indoleacetic acid (IAA) - induced cambial activity in photosynthesizing and non-photosynthesizing shoots, and (3) inhibited the basipetal movement of [14C]IAA. Neither gibberellic acid nor kinetin counteracted the inhibitory effect of (±)ABA on IAA-induced cambial activity. In addition it was demonstrated that increasing the internal water stress increased the level of endogenous ABA in the phloem–cambial region of bark peelings and decreased the basipetal movement of [14C]IAA through branch sections. On the basis of these findings it is proposed that internal water stress inhibits cambial activity, partly through increasing the level of ABA; the ABA acts to decrease the provision of carbohydrates and auxin that are required for cambial growth.

scholarly journals The role of abscisic acid and water stress in root herbivore-induced leaf resistance

2010 ◽  
Vol 189 (1) ◽  
pp. 308-320 ◽  
Author(s):  
Matthias Erb ◽  
Tobias G. Köllner ◽  
Jörg Degenhardt ◽  
Claudia Zwahlen ◽  
Bruce E. Hibbard ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Water Stress ◽  
Leaf Resistance ◽  
Root Herbivore

scholarly journals The role of abscisic acid in the response of a specific vacuolar invertase to water stress in the adult maize leaf

2003 ◽  
Vol 54 (390) ◽  
pp. 2177-2186 ◽  
Author(s):  
Jacques Trouverie ◽  
Claudine Thévenot ◽  
Jean‐Paul Rocher ◽  
Bruno Sotta ◽  
Jean‐Louis Prioul
Keyword(s):  
Abscisic Acid ◽  
Water Stress ◽  
Vacuolar Invertase ◽  
Maize Leaf

scholarly journals Role of Abscisic Acid in The Water Balance of Pistachio (Pistacia. vera) Seedlings: دور حمض الابسيسيك في التوازن المائي لغراس الفستق الحلبي (Pistacia vera)

2021 ◽  
Vol 5 (5) ◽  
pp. 43-32
Author(s):  
Ibrahim Mohammad Alabdullah, Muhammad Ayman Daire, Mohamad K Ibrahim Mohammad Alabdullah, Muhammad Ayman Daire, Mohamad K
Keyword(s):  
Abscisic Acid ◽  
Water Stress ◽  
Water Balance ◽  
Pistacia Vera ◽  
Negative Effects ◽  
Polyethylene Bags ◽  
Harmful Effects ◽  
Different Levels ◽  
Acid Treatments

This experiment aims to study the effect of abscisic acid in maintaining water balance under different levels of irrigation. it was carried out in Pistachio Office on two-years-old (P.vera) seedlings growing in polyethylene bags. Three irrigation and three abscisic acid treatments were applied during 2019 and 2020 year. The results showed a significant change of water stress on most of the growth indicators (planting length - planting diameter - leaf area, etc.) which decreased and reached its lowest value when irrigation with 14-day interval between irrigation. As for abscisic acid treatments reduced significantly and avoided the harmful effects of water stress and improved the water balance of seedlings. A significant increase was observed in length of the main axis of seedlings that treated with abscisic acid (59.3 cm) compared with control plants (55.5cm) under water stress conditions, in addition to it was observed an increase in concentration of chlorophyll (38 mg/ g ww) compared to control plants (36.19 mg/ g ww), while the level of proline in the treated plants increased significantly (52.5 mg/ g ww) compared with untreated control plants (50 mg/ g ww), and these results illustrate the important role of abscisic acid in regulating water relations within the plant. And increase the plant's ability to withstand the negative effects of water stress.

Plant hormones and water stress

1976 ◽  
Vol 273 (927) ◽  
pp. 513-522 ◽  
Keyword(s):  
Abscisic Acid ◽  
Water Stress ◽  
Plant Hormones ◽  
Stomatal Closure ◽  
Stomatal Opening ◽  
Plant Water Relations ◽  
Plant Water ◽  
Endogenous Cytokinins ◽  
The Subject

In recent years, the involvement of plant hormones has become a subject of interest in plant water relations. The interest was initially stimulated by research into leaf ageing and plant senescence and the role of cytokinins in these processes. Plant water stress and some other stresses enhance senescence. They also bring about reduction in the levels of endogenous cytokinins. Exogenous cytokinins retard leaf senescence and may stimulate stomatal opening. Later, interest in the subject gained momentum from the various observations of the role of abscisic acid in stomatal opening. Abscisic acid brings about rapid stomatal closure, and its endogenous levels in leaves increase rapidly when plants are subjected to water stress or several other stresses. Hypotheses and data relevant to the possible role of hormones in plants subjected to environmental stresses are presented and discussed.

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