Abstract
This study focussed on the effect of increasing nitrogen (N) supply on root uptake and root-to-shoot translocation of zinc (Zn) as well as retranslocation of foliar-applied Zn in durum wheat (Triticum durum). Nutrient solution experiments were conducted to examine the root uptake and root-to-shoot translocation of (65) Zn in seedlings precultured with different N supplies. In additional experiments, the effect of varied N nutrition on retranslocation of foliar-applied (65) Zn was tested at both the vegetative and generative stages. When N supply was increased, the (65) Zn uptake by roots was enhanced by up to threefold and the (65) Zn translocation from roots to shoots increased by up to eightfold, while plant growth was affected to a much smaller degree. Retranslocation of (65) Zn from old into young leaves and from flag leaves to grains also showed marked positive responses to increasing N supply. The results demonstrate that the N-nutritional status of wheat affects major steps in the route of Zn from the growth medium to the grain, including its uptake, xylem transport and remobilization via phloem. Thus, N is a critical player in the uptake and accumulation of Zn in plants, which deserves special attention in biofortification of food crops with Zn.
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Claims 5
Claim · model-written summary
Increased nitrogen enhanced root zinc uptake up to threefold.
- Taxon
- durum wheat
Triticum turgidum subsp. durume1 - Treatment
- N supply was increasede0
- Outcome
- When N supply was increased, the (65) Zn uptake by roots was enhanced by up to threefolde0
- Direction
- enhancede0
- Value
- up to threefolde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When N supply was increased, the (65) Zn uptake by roots was enhanced by up to threefold”
t0“wheat”
e1“durum wheat (Triticum durum)”
Claim · model-written summary
Increased nitrogen raised zinc root-to-shoot translocation up to eightfold.
- Taxon
- durum wheatTriticum turgidum subsp. durume1
- Outcome
- the (65) Zn translocation from roots to shoots increased by up to eightfolde0
- Direction
- increasede0
- Value
- up to eightfolde0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the (65) Zn translocation from roots to shoots increased by up to eightfold”
t0“wheat”
e1“durum wheat (Triticum durum)”
Claim · model-written summary
Plant growth responded much less than zinc transport.
- Taxon
- durum wheatTriticum turgidum subsp. durume1
- Outcome
- plant growth was affected to a much smaller degree.e0
- Direction
- much smaller degreee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant growth was affected to a much smaller degree.”
t0“wheat”
e1“durum wheat (Triticum durum)”
Claim · model-written summary
Increasing nitrogen enhanced zinc retranslocation from old to young leaves.
- Taxon
- durum wheatTriticum turgidum subsp. durume1
- Treatment
- increasing N supplye0
- Outcome
- Retranslocation of (65) Zn from old into young leaves and from flag leaves to grains also showed marked positive responses to increasing N supply.e0
- Direction
- positive responsese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Retranslocation of (65) Zn from old into young leaves and from flag leaves to grains also showed marked positive responses to increasing N supply.”
t0“wheat”
e1“durum wheat (Triticum durum)”
Claim · model-written summary
Increasing nitrogen enhanced zinc retranslocation from flag leaves to grains.
- Taxon
- durum wheatTriticum turgidum subsp. durume1
- Treatment
- increasing N supplye0
- Outcome
- Retranslocation of (65) Zn from old into young leaves and from flag leaves to grains also showed marked positive responses to increasing N supply.e0
- Direction
- positive responsese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Retranslocation of (65) Zn from old into young leaves and from flag leaves to grains also showed marked positive responses to increasing N supply.”
t0“wheat”
e1“durum wheat (Triticum durum)”
The same questions in other papers
nitrogen · nutrient: content · Triticum turgidum (rivet wheat)Positive and negative results
16 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- positive
- negative
16 papers more in this group
See all 20 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.