Abstract
Abstract Zinc (Zn) deficiency causes serious issues to plant growth and development, negatively affecting crops in many world regions. On the other hand, Zn toxicity impairs plant growth, producing physiological alterations, and even cell death. In plants, two of the processes that most determine growth are nitrogen (N) metabolism and photosynthesis. In the last decades, several authors proved that silicon (Si) and calcium (Ca) mitigate the effects of various abiotic and biotic stresses in plants. The objective of this research is to study the effect of Si application to barley ( Hordeum vulgare cv. Nure) plants grown under Zn deficiency and Zn toxicity. Hence, barley plants were grown in hydroponics and supplied with a low Zn dose (0.01 µM ZnSO 4 ) and a high Zn dose (100 µM ZnSO 4 ) and were supplied with CaSiO 3 . Parameters related to Zn accumulation, N metabolism, and photosynthesis were measured. Zn stress affected leaf Zn concentration and reduced biomass in barley plants. Both Zn toxicity and deficiency inhibited N metabolism and enhanced photorespiration, increasing stress symptoms. CaSiO 3 mitigated Zn stress effects, probably regulating Zn levels in plant cells and enhancing N metabolism and photosynthesis. We conclude that CaSiO 3 could be beneficial to grow barley plants in soils with high or low availability of Zn.
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Claims 9
Claim · model-written summary
Zinc stress altered leaf zinc concentration in barley.
- Taxon
- barley plants
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- Zn stresse0
- Outcome
- leaf Zn concentratione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Zn stress affected leaf Zn concentration and reduced biomass in barley plants.”
Claim · model-written summary
Zinc stress reduced barley biomass.
- Taxon
- barley plantsHordeum vulgaree0
- Treatment
- Zn stresse0
- Outcome
- biomasse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zn stress affected leaf Zn concentration and reduced biomass in barley plants.”
Claim · model-written summary
Both zinc toxicity and deficiency inhibited nitrogen metabolism in barley.
- Taxon
- barley plantsHordeum vulgaret0
- Treatment
- Zn toxicity and deficiencye0
- Outcome
- N metabolisme0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both Zn toxicity and deficiency inhibited N metabolism and enhanced photorespiration, increasing stress symptoms.”
t0“barley plants”
Claim · model-written summary
Both zinc toxicity and deficiency enhanced photorespiration in barley.
- Taxon
- barley plantsHordeum vulgaret0
- Treatment
- Zn toxicity and deficiencye0
- Outcome
- photorespiratione0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both Zn toxicity and deficiency inhibited N metabolism and enhanced photorespiration, increasing stress symptoms.”
t0“barley plants”
Claim · model-written summary
Both zinc toxicity and deficiency increased stress symptoms in barley.
- Taxon
- barley plantsHordeum vulgaret0
- Treatment
- Zn toxicity and deficiencye0
- Outcome
- stress symptomse0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both Zn toxicity and deficiency inhibited N metabolism and enhanced photorespiration, increasing stress symptoms.”
t0“barley plants”
Claim · model-written summary
Calcium silicate mitigated zinc stress effects in barley.
- Taxon
- barley plantsHordeum vulgaret0
- Treatment
- CaSiO 3e0
- Outcome
- Zn stress effectse0
- Direction
- mitigatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CaSiO 3 mitigated Zn stress effects, probably regulating Zn levels in plant cells and enhancing N metabolism and photosynthesis.”
t0“barley plants”
Claim · model-written summary
Calcium silicate probably regulated cellular zinc levels in barley.
- Taxon
- barley plantsHordeum vulgaret0
- Treatment
- CaSiO 3e0
- Outcome
- Zn levels in plant cellse0
- Direction
- regulatinge0
- Qualifier
- probablye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CaSiO 3 mitigated Zn stress effects, probably regulating Zn levels in plant cells and enhancing N metabolism and photosynthesis.”
t0“barley plants”
Claim · model-written summary
Calcium silicate enhanced nitrogen metabolism and photosynthesis in barley under zinc stress.
- Taxon
- barley plantsHordeum vulgaret0
- Treatment
- CaSiO 3e0
- Outcome
- N metabolism and photosynthesise0
- Direction
- enhancinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CaSiO 3 mitigated Zn stress effects, probably regulating Zn levels in plant cells and enhancing N metabolism and photosynthesis.”
t0“barley plants”
Claim · model-written summary
The authors conclude that calcium silicate could benefit barley cultivation where zinc availability is high or low.
- Taxon
- barley plantsHordeum vulgaree0
- Outcome
- CaSiO 3 could be beneficial to grow barley plantse0
- Qualifier
- soils with high or low availability of Zne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We conclude that CaSiO 3 could be beneficial to grow barley plants in soils with high or low availability of Zn.”
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