Abstract
ABSTRACT Drought stress significantly challenges wheat production globally, and drought priming has emerged as an effective strategy to mitigate yield loss under drought stress events. However, the effect of drought priming on plant nitrogen use efficiency (NUE) remains insufficiently understood. This study investigates the effects of drought priming at the six‐leaf stage on NUE under drought stress during grain filling in four wheat varieties with distinct responses to drought priming. Our results indicate that there is no correlation between inherent drought tolerance and the effects of drought priming among the wheat varieties studied. In priming‐sensitive varieties, drought‐primed plants exhibited significant improvements in grain yield and NUE under drought stress compared to non‐primed plants. Conversely, priming‐insensitive varieties showed no significant differences in yield or NUE between primed and non‐primed plants under similar conditions. Notably, under drought stress, primed plants exhibited higher yield and NUE than non‐primed plants in drought priming positive variety, while the opposite trend was observed in drought priming negative response variety. The enhancement of NUE through drought priming was associated with improved nitrogen uptake efficiency and its allocation to spikes, with abscisic acid accumulation playing a pivotal role. These findings provide valuable insights into the mechanisms by which drought priming enhances NUE under drought stress, contributing to the development of sustainable agricultural practices amid climate change.
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Claims 9
Claim · model-written summary
Inherent drought tolerance did not correlate with priming response across wheat varieties.
- Taxon
- wheat
Triticum aestivumt0 - Material
- wheat varieties studiede0
- Outcome
- effects of drought priminge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there is no correlation between inherent drought tolerance and the effects of drought priming among the wheat varieties studied”
t0“Wheat”
Claim · model-written summary
Priming-sensitive varieties had significantly improved grain yield after priming under drought.
- Taxon
- WheatTriticum aestivumt0
- Material
- priming‐sensitive varietiese0
- Treatment
- drought‐primede0
- Outcome
- grain yielde0
- Direction
- improvementse0
- Comparator
- non‐primed plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In priming‐sensitive varieties, drought‐primed plants exhibited significant improvements in grain yield and NUE under drought stress compared to non‐primed plants”
t0“Wheat”
Claim · model-written summary
Priming-sensitive varieties had significantly improved NUE after priming under drought.
- Taxon
- WheatTriticum aestivumt0
- Material
- priming‐sensitive varietiese0
- Treatment
- drought‐primede0
- Outcome
- NUEe0
- Direction
- improvementse0
- Comparator
- non‐primed plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In priming‐sensitive varieties, drought‐primed plants exhibited significant improvements in grain yield and NUE under drought stress compared to non‐primed plants”
t0“Wheat”
Claim · model-written summary
Priming-insensitive varieties showed no significant yield difference between primed and non-primed plants.
- Taxon
- WheatTriticum aestivumt0
- Material
- priming‐insensitive varietiese0
- Treatment
- primede0
- Outcome
- yielde0
- Direction
- no significant differencese0
- Comparator
- non‐primed plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“priming‐insensitive varieties showed no significant differences in yield or NUE between primed and non‐primed plants under similar conditions”
t0“Wheat”
Claim · model-written summary
Priming-insensitive varieties showed no significant NUE difference between primed and non-primed plants.
- Taxon
- WheatTriticum aestivumt0
- Material
- priming‐insensitive varietiese0
- Treatment
- primede0
- Outcome
- NUEe0
- Direction
- no significant differencese0
- Comparator
- non‐primed plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“priming‐insensitive varieties showed no significant differences in yield or NUE between primed and non‐primed plants under similar conditions”
t0“Wheat”
Claim · model-written summary
Under drought, primed plants in a positive-response variety had higher yield and NUE.
- Taxon
- WheatTriticum aestivumt0
- Material
- drought priming positive varietye0
- Treatment
- primede0
- Outcome
- yield and NUEe0
- Direction
- highere0
- Comparator
- non‐primed plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“primed plants exhibited higher yield and NUE than non‐primed plants in drought priming positive variety”
t0“Wheat”
Claim · model-written summary
Under drought, priming produced the opposite yield and NUE trend in a negative-response variety.
- Taxon
- WheatTriticum aestivumt0
- Material
- drought priming negative response varietye0
- Treatment
- drought priminge0
- Outcome
- opposite trende0
- Direction
- opposite trende0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while the opposite trend was observed in drought priming negative response variety”
t0“Wheat”
Claim · model-written summary
Improved nitrogen uptake and allocation to spikes were associated with enhanced NUE after priming.
- Taxon
- WheatTriticum aestivumt0
- Organ / stage
- spikese0
- Treatment
- drought priminge0
- Outcome
- NUEe0
- Direction
- enhancemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The enhancement of NUE through drought priming was associated with improved nitrogen uptake efficiency and its allocation to spikes”
t0“Wheat”
Claim · model-written summary
The authors attribute a pivotal role in enhanced NUE to abscisic acid accumulation.
- Taxon
- WheatTriticum aestivumt0
- Compound
- abscisic acide0
- Outcome
- abscisic acid accumulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with abscisic acid accumulation playing a pivotal role”
t0“Wheat”
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