Abstract
Defining the metabolic strategies used by wheat to tolerate and recover from drought events will be important for ensuring yield stability in the future, but studies addressing this critical research topic are limited. To this end, the current study quantified the physiological, biochemical, and agronomic responses of a drought tolerant and drought sensitive cultivar to periods of water deficit and recovery. Drought stress caused a reversible decline in leaf water relations, membrane stability, and photosynthetic activity, leading to increased reactive oxygen species (ROS) generation, lipid peroxidation and membrane injury. Plants exhibited osmotic adjustment through the accumulation of soluble sugars, proline, and free amino acids and increased enzymatic and non-enzymatic antioxidant activities. After re-watering, leaf water potential, membrane stability, photosynthetic processes, ROS generation, anti-oxidative activities, lipid peroxidation, and osmotic potential completely recovered for moderately stressed plants and did not fully recover in severely stressed plants. Higher photosynthetic rates during drought and rapid recovery after re-watering produced less-pronounced yield declines in the tolerant cultivar than the sensitive cultivar. These results suggested that the plant's ability to maintain functions during drought and to rapidly recover after re-watering during vegetative periods are important for determining final productivity in wheat.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Drought caused reversible declines in leaf water relations, membrane stability, and photosynthetic activity.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- Drought stresse0
- Outcome
- leaf water relations, membrane stability, and photosynthetic activitye0
- Direction
- declinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress caused a reversible decline in leaf water relations, membrane stability, and photosynthetic activity”
t0“wheat”
Claim · model-written summary
Drought increased reactive oxygen species generation, lipid peroxidation, and membrane injury.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- reactive oxygen species (ROS) generation, lipid peroxidation and membrane injurye0
- Direction
- increasede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased reactive oxygen species (ROS) generation, lipid peroxidation and membrane injury”
t0“wheat”
Claim · model-written summary
Plants accumulated soluble sugars, proline, and free amino acids during osmotic adjustment.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- accumulation of soluble sugars, proline, and free amino acidse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants exhibited osmotic adjustment through the accumulation of soluble sugars, proline, and free amino acids”
t0“wheat”
Claim · model-written summary
Plants had increased enzymatic and non-enzymatic antioxidant activities.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- enzymatic and non-enzymatic antioxidant activitiese0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased enzymatic and non-enzymatic antioxidant activities”
t0“wheat”
Claim · model-written summary
After re-watering, physiological and biochemical measures completely recovered in moderately stressed plants.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- re-wateringe0
- Outcome
- leaf water potential, membrane stability, photosynthetic processes, ROS generation, anti-oxidative activities, lipid peroxidation, and osmotic potentiale0
- Direction
- completely recoverede0
- Qualifier
- moderately stressed plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After re-watering, leaf water potential, membrane stability, photosynthetic processes, ROS generation, anti-oxidative activities, lipid peroxidation, and osmotic potential completely recovered for moderately stressed plants”
t0“wheat”
Claim · model-written summary
After re-watering, those measures did not fully recover in severely stressed plants.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- re-wateringe0
- Outcome
- did not fully recovere0
- Direction
- did not fully recovere0
- Qualifier
- severely stressed plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After re-watering, leaf water potential, membrane stability, photosynthetic processes, ROS generation, anti-oxidative activities, lipid peroxidation, and osmotic potential completely recovered for moderately stressed plants and did not fully recover in severely stressed plants”
t0“wheat”
Claim · model-written summary
The tolerant cultivar had less-pronounced yield declines than the sensitive cultivar.
- Taxon
- wheatTriticum aestivumt0
- Material
- tolerant cultivare0
- Outcome
- yield declinese0
- Direction
- less-pronouncede0
- Comparator
- sensitive cultivare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher photosynthetic rates during drought and rapid recovery after re-watering produced less-pronounced yield declines in the tolerant cultivar than the sensitive cultivar”
t0“wheat”
The same questions in other papers
rewatering · physiology: oxidative · Triticum aestivum (wheat)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- positive
1 paper more in this group
See all 5 papers →drought · physiology: photosynthesis · Triticum aestivum (wheat)Positive and negative results
204 papers in the same direction as this paper · 41 in the opposite direction
- negative
- negative
- negative
242 papers more in this group
See all 246 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.