Abstract
Chlorophyll (Chl) and carotenoid accumulations are markedly reduced in detached wheat leaves after 20‐hr exposure to light when subjected to mild (‐7 bar) osmotic stress prior to illumination. The treatment of N 6 ‐benzyladenine (BA) in combination with gibberellic acid (GA) stimulated the recovery of plastid pigment accumulations in mildy stressed detached leaves. The combination treatment of BA plus IAA increased pigment accumulations only to the level stimulated by BA treatment alone. Mild water deficits increased the Chl a/b ratio and reduced the Chl/carotenoid ratio in wheat sections. Growth promoting hormones generally lowered the Chl a/b ratio and increased the Chl/carotenoid ratio in mildly stressed detached leaves. Abscisic acid (ABA) reduced plastid pigment concentrations in greening tissue and increased the Chl a/b ratio while decreasing the Chl/carotenoid ratio. In detached leaves stressed to ‐14 bars, BA in combination with GA stimulated only partial recovery of the plastid pigment accumulations and improved slightly the Chl a/b and Chl/carotenoid ratios.
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Claims 12
Claim · model-written summary
Mild osmotic stress reduced chlorophyll and carotenoid accumulation in detached wheat leaves.
- Taxon
- wheat
Triticum aestivume0 - Organ / stage
- detached wheat leavese0
- Treatment
- mild (‐7 bar) osmotic stresse0
- Outcome
- Chlorophyll (Chl) and carotenoid accumulationse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll (Chl) and carotenoid accumulations are markedly reduced in detached wheat leaves after 20‐hr exposure to light when subjected to mild (‐7 bar) osmotic stress prior to illumination”
Claim · model-written summary
BA plus GA stimulated pigment recovery in mildly stressed detached leaves.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- N 6 ‐benzyladenine (BA) in combination with gibberellic acid (GA)e0
- Outcome
- recovery of plastid pigment accumulationse0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatment of N 6 ‐benzyladenine (BA) in combination with gibberellic acid (GA) stimulated the recovery of plastid pigment accumulations in mildy stressed detached leaves”
t0“WHEAT”
Claim · model-written summary
BA plus IAA increased pigment accumulation only to the level of BA alone.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- BA plus IAAe0
- Outcome
- pigment accumulationse0
- Direction
- increasede0
- Comparator
- BA treatment alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combination treatment of BA plus IAA increased pigment accumulations only to the level stimulated by BA treatment alone”
t0“WHEAT”
Claim · model-written summary
Mild water deficits increased the wheat Chl a/b ratio.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Mild water deficitse0
- Outcome
- Chl a/b ratioe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mild water deficits increased the Chl a/b ratio and reduced the Chl/carotenoid ratio in wheat sections”
Claim · model-written summary
Mild water deficits reduced the wheat Chl/carotenoid ratio.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Mild water deficitse0
- Outcome
- Chl/carotenoid ratioe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mild water deficits increased the Chl a/b ratio and reduced the Chl/carotenoid ratio in wheat sections”
Claim · model-written summary
Growth promoting hormones lowered the Chl a/b ratio in mildly stressed leaves.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- Growth promoting hormonese0
- Outcome
- Chl a/b ratioe0
- Direction
- lowerede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth promoting hormones generally lowered the Chl a/b ratio and increased the Chl/carotenoid ratio in mildly stressed detached leaves”
t0“WHEAT”
Claim · model-written summary
Growth promoting hormones increased the Chl/carotenoid ratio in mildly stressed leaves.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- Growth promoting hormonese0
- Outcome
- Chl/carotenoid ratioe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth promoting hormones generally lowered the Chl a/b ratio and increased the Chl/carotenoid ratio in mildly stressed detached leaves”
t0“WHEAT”
Claim · model-written summary
ABA reduced plastid pigment concentrations in greening wheat tissue.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- Abscisic acid (ABA)e0
- Outcome
- plastid pigment concentrationse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Abscisic acid (ABA) reduced plastid pigment concentrations in greening tissue and increased the Chl a/b ratio while decreasing the Chl/carotenoid ratio”
t0“WHEAT”
Claim · model-written summary
ABA increased the Chl a/b ratio in greening wheat tissue.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- Abscisic acid (ABA)e0
- Outcome
- Chl a/b ratioe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Abscisic acid (ABA) reduced plastid pigment concentrations in greening tissue and increased the Chl a/b ratio while decreasing the Chl/carotenoid ratio”
t0“WHEAT”
Claim · model-written summary
ABA decreased the Chl/carotenoid ratio in greening wheat tissue.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- Abscisic acid (ABA)e0
- Outcome
- Chl/carotenoid ratioe0
- Direction
- decreasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Abscisic acid (ABA) reduced plastid pigment concentrations in greening tissue and increased the Chl a/b ratio while decreasing the Chl/carotenoid ratio”
t0“WHEAT”
Claim · model-written summary
BA plus GA partly restored pigment accumulation in wheat leaves stressed to ‐14 bars.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- BA in combination with GAe0
- Outcome
- plastid pigment accumulationse0
- Direction
- stimulatede0
- Qualifier
- ‐14 barse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In detached leaves stressed to ‐14 bars, BA in combination with GA stimulated only partial recovery of the plastid pigment accumulations and improved slightly the Chl a/b and Chl/carotenoid ratios”
t0“WHEAT”
Claim · model-written summary
BA plus GA slightly improved the Chl a/b and Chl/carotenoid ratios in wheat leaves stressed to ‐14 bars.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- BA in combination with GAe0
- Outcome
- Chl a/b and Chl/carotenoid ratiose0
- Direction
- improved slightlye0
- Qualifier
- ‐14 barse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In detached leaves stressed to ‐14 bars, BA in combination with GA stimulated only partial recovery of the plastid pigment accumulations and improved slightly the Chl a/b and Chl/carotenoid ratios”
t0“WHEAT”
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