scholarly journals Proline Accumulation in Water-stressed Barley Leaves in Relation to Translocation and the Nitrogen Budget

1979 ◽  
Vol 63 (3) ◽  
pp. 518-523 ◽  
Author(s):  
Raymond E. Tully ◽  
Andrew D. Hanson ◽  
Charles E. Nelsen
Keyword(s):  
Nitrogen Budget ◽  
Proline Accumulation ◽  
Barley Leaves

scholarly journals Influence of water stress and abscisic acid on free proline accumulation in barley leaves

2013 ◽  
Vol 36 (1-2) ◽  
pp. 59-65 ◽  
Author(s):  
Hanna Chełkowska ◽  
Danuta Zielińska
Keyword(s):  
Abscisic Acid ◽  
Water Stress ◽  
Osmotic Stress ◽  
Threshold Value ◽  
Proline Accumulation ◽  
Proline Content ◽  
Free Proline ◽  
Rapid Accumulation ◽  
Influence Of Water ◽  
Barley Leaves

Rapid accumulation of free proline was found in barley leaves under conditions of osmotic stress at the level of -8.3 bars, but not before 9 days of its duration. The threshold value of osmotic stress for the start of a rapid accumulation of proline was about -6 bars. The excised leaves of barley subjected to water stress by wilting accumulated free proline more rapidly. In the course of 24 hours free proline content increased about 30-fold, while the water content in the leaves decreased 3-fold only. We found also that excised barley leaves with full turgor treated with abscisic acid (10<sup>-4</sup> M) accumulated free proline as early as after 3 hours and subsequently after 24 hours free proline content increased 10-fold.

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