Abstract
The aim of this study was to investigate the effect of foliar application of salicylic acid (SA) on alleviating Zn stress in young wheat plants. Two rigorous pot experiments were conducted with two spring wheat cultivars growing on soil artificially contaminated with Zn. The experimental design included three levels of soil contamination with Zn: 0, 300 and 700 mg kg−1, and three levels of SA concentration: 0, 0.5 and 1 mM. Foliar spray of SA was applied twice at an interval of two weeks. Wheat biomass was harvested two months after plant emergence. Both cultivars showed similar biomass reduction due to Zn phytotoxicity, but differed in the accumulation and distribution of this metal in the plant. The positive effect of SA foliar application was obtained only for one of the two tested cultivars, where a reduction in the Zn translocation from the roots to the aboveground part was observed. As a consequence, the decrease in biomass caused by the toxicity of Zn was limited. A greater positive effect of SA application on wheat biomass was observed at 700 than at 300 mg kg−1 Zn in soil. The different responses of the cultivars to the SA was probably related to their different defense mechanisms against Zn stress.
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Claims 5
Claim · model-written summary
Both cultivars had similar biomass reductions under zinc toxicity.
- Taxon
- wheat
Triticum aestivumt0 - Material
- Both cultivarse0
- Treatment
- Zn phytotoxicitye0
- Outcome
- biomasse0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both cultivars showed similar biomass reduction due to Zn phytotoxicity”
t0“Two Wheat Cultivars”
Claim · model-written summary
The cultivars differed in zinc accumulation and distribution.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- accumulation and distribution of this metale0
Not reportedMaterial
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but differed in the accumulation and distribution of this metal in the plant”
t0“Two Wheat Cultivars”
Claim · model-written summary
Salicylic acid reduced zinc translocation in only one cultivar.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- SA foliar applicatione0
- Outcome
- Zn translocation from the roots to the aboveground parte0
- Direction
- reductione0
- Qualifier
- only for one of the two tested cultivarse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The positive effect of SA foliar application was obtained only for one of the two tested cultivars, where a reduction in the Zn translocation from the roots to the aboveground part was observed”
t0“Two Wheat Cultivars”
Claim · model-written summary
Salicylic acid limited the biomass decrease caused by zinc toxicity in the responsive cultivar.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- SAe0
- Outcome
- biomasse0
- Direction
- decreasee0
- Qualifier
- toxicity of Zne0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As a consequence, the decrease in biomass caused by the toxicity of Zn was limited”
t0“Two Wheat Cultivars”
Claim · model-written summary
Salicylic acid had a greater positive biomass effect at 700 than 300 mg kg−1 soil zinc.
- Taxon
- wheatTriticum aestivume0
- Treatment
- SA applicatione0
- Outcome
- wheat biomasse0
- Direction
- greatere0
- Value
- 700 than at 300 mg kg−1e0
- Qualifier
- 700e0
- Comparator
- 300 mg kg−1 Zn in soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A greater positive effect of SA application on wheat biomass was observed at 700 than at 300 mg kg−1 Zn in soil”
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