Abstract
Abstract Abiotic stress tolerance in plants is said to be induced by pre‐stress events (priming) during the vegetative phase. We aimed to test whether drought priming could improve the heat and drought tolerance in wheat cultivars. Two wheat cultivars “Gladius” and “Paragon” were grown in a fully controlled gravimetric platform and subjected to either no stress or two drought cycles during the tillering stage. At anthesis, both batches were either subjected to high temperature stress, drought stress or kept as control. No alleviation of grain yield reduction due to priming was observed. Higher CO 2 assimilation rates were achieved due to priming under drought stress. Yield results showed that priming was not damage cumulative to wheat. Priming was responsible to alleviated biochemical photosynthetic limitations under drought stress and sustained photochemical utilization under heat stress in “Paragon.” Priming as a strategy in abiotic stress alleviation was better evidenced in the stress susceptible cultivar “Paragon” than tolerant cultivar “Gladius”; therefore, the type of response to priming appears to be cultivar dependable, and thus phenotypical variation should be expected when studying the effects of abiotic priming.
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Claims 6
Claim · model-written summary
Priming did not alleviate grain yield reduction.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- priminge0
- Outcome
- grain yield reductione0
- Direction
- No alleviatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No alleviation of grain yield reduction due to priming was observed.”
t0“wheat cultivars”
Claim · model-written summary
Priming raised CO 2 assimilation under drought.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- priminge0
- Outcome
- CO 2 assimilation ratese0
- Direction
- Highere0
- Qualifier
- under drought stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher CO 2 assimilation rates were achieved due to priming under drought stress.”
t0“wheat cultivars”
Claim · model-written summary
Priming did not produce cumulative yield damage in wheat.
- Taxon
- wheatTriticum aestivume0
- Treatment
- priminge0
- Outcome
- damage cumulativee0
- Direction
- not damage cumulativee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield results showed that priming was not damage cumulative to wheat.”
Claim · model-written summary
Priming alleviated biochemical photosynthetic limitations under drought in Paragon.
- Taxon
- wheatTriticum aestivumt0
- Material
- Paragone0
- Treatment
- Priminge0
- Outcome
- biochemical photosynthetic limitationse0
- Direction
- alleviatede0
- Qualifier
- under drought stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Priming was responsible to alleviated biochemical photosynthetic limitations under drought stress and sustained photochemical utilization under heat stress in “Paragon.””
t0“wheat cultivars”
Claim · model-written summary
Priming sustained photochemical utilization under heat stress in Paragon.
- Taxon
- wheatTriticum aestivumt0
- Material
- Paragone0
- Treatment
- Priminge0
- Outcome
- photochemical utilizatione0
- Direction
- sustainede0
- Qualifier
- under heat stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Priming was responsible to alleviated biochemical photosynthetic limitations under drought stress and sustained photochemical utilization under heat stress in “Paragon.””
t0“wheat cultivars”
Claim · model-written summary
Priming benefits were more evident in Paragon than Gladius.
- Taxon
- wheatTriticum aestivumt0
- Material
- Paragone0
- Treatment
- Priminge0
- Outcome
- abiotic stress alleviatione0
- Direction
- better evidencede0
- Comparator
- Gladiuse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Priming as a strategy in abiotic stress alleviation was better evidenced in the stress susceptible cultivar “Paragon” than tolerant cultivar “Gladius””
t0“wheat cultivars”
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