Paper · 2018 · Australian Journal of Crop Science

Differential responses of antioxidative defense system to NaCl in grain and forage sorghum during germination and seedling establishment

Alexandre Bosco de Oliveira; Evaldo Heber Silva do Nascimento; Elton Camelo Marques; et al.

7
claims
19
verbatim quotes
4
citations
2
research areas
✓
Open access

Abstract

Tolerance of crops to abiotic stresses can vary among cultivars and due to the phenotypic stage of development. The aim of this study was to evaluate the salinity effects on germination, seedling establishment and physiological changes on grain (BRS 310) and forage sorghum (BRS 800). Sorghum seeds were sown between two paper towels moistened with deionized water and also NaCl solution (50 mM) for 10 days. We evaluated the germination percentage, growth parameters, contents of inorganic and organic solutes and activity of antioxidant enzymes. The salinity did not affect sorghum seeds germination, however, it caused a reduction in the development of the seedlings. Both genotypes presented similar growth parameters under optimum and salt stress conditions, with exception for decreases in shoot length and shoot dry mass of BRS 800 genotype under salinity. Similar results for inorganic solutes accumulation in both genotypes suggest that osmotic adjustment cannot be considered as one of the strategies used by these genotypes to attenuate the NaCl effects. BRS 310 genotype is more tolerant to salinity than BRS 800 genotype and it is likely to be related to a better protection mechanism against oxidative damage by inducing activities of antioxidant enzymes, such as ascorbate peroxidase and catalase. This study highlights the importance of these enzymes in the establishment of salttolerant sorghum seedlings under salinity conditions.

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Claims 7

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

NaCl did not change sorghum seed germination compared with deionized water.

Taxon
sorghumSorghumt0
Treatment
NaCl solution (50 mM)e0
Outcome
seeds germinatione1
Direction
no_changeinferrede1
Comparator
deionized watere0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sorghum
Sorghum · Taxon · picture of the genus (one of its species)Evelyn Simak · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

t0

“in grain and forage sorghum”

✓ located verbatim in the source · title, characters 63–90 · show in text ↑
e0

“Sorghum seeds were sown between two paper towels moistened with deionized water and also NaCl solution (50 mM) for 10 days”

✓ located verbatim in the source · abstract, characters 285–407 · show in text ↑
e1

“The salinity did not affect sorghum seeds germination”

✓ located verbatim in the source · abstract, characters 548–601 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

NaCl reduced the development of sorghum seedlings compared with deionized water.

Taxon
sorghumSorghumt0
Treatment
NaCle0
Outcome
development of the seedlingse2
Direction
reductione2
Comparator
deionized watere0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sorghum
Sorghum · Taxon · picture of the genus (one of its species)Evelyn Simak · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

t0

“in grain and forage sorghum”

✓ located verbatim in the source · title, characters 63–90 · show in text ↑
e0

“Sorghum seeds were sown between two paper towels moistened with deionized water and also NaCl solution (50 mM) for 10 days”

✓ located verbatim in the source · abstract, characters 285–407 · show in text ↑
e2

“it caused a reduction in the development of the seedlings”

✓ located verbatim in the source · abstract, characters 612–669 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Growth parameters of the grain sorghum BRS 310 were similar under optimum and salt stress conditions.

Taxon
sorghumSorghumt0
Material
BRS 310e7
Treatment
salt stresse3
Outcome
growth parameterse3
Direction
similare3
Qualifier
BRS 800e3
Comparator
optimume3

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sorghum
Sorghum · Taxon · picture of the genus (one of its species)Evelyn Simak · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

t0

“in grain and forage sorghum”

✓ located verbatim in the source · title, characters 63–90 · show in text ↑
e3

“Both genotypes presented similar growth parameters under optimum and salt stress conditions, with exception for decreases in shoot length and shoot dry mass of BRS 800 genotype under salinity”

✓ located verbatim in the source · abstract, characters 671–862 · show in text ↑
e7

“on grain (BRS 310) and forage sorghum (BRS 800)”

✓ located verbatim in the source · abstract, characters 236–283 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

The forage sorghum BRS 800 decreased shoot length and shoot dry mass under salinity compared with optimum conditions.

Taxon
sorghumSorghumt0
Material
BRS 800e3
Treatment
salinitye3
Outcome
shoot length and shoot dry masse3
Direction
decreasese3
Comparator
optimume3

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sorghum
Sorghum · Taxon · picture of the genus (one of its species)Evelyn Simak · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

t0

“in grain and forage sorghum”

✓ located verbatim in the source · title, characters 63–90 · show in text ↑
e3

“Both genotypes presented similar growth parameters under optimum and salt stress conditions, with exception for decreases in shoot length and shoot dry mass of BRS 800 genotype under salinity”

✓ located verbatim in the source · abstract, characters 671–862 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Inorganic solute accumulation under NaCl was similar in both sorghum genotypes.

Taxon
sorghumSorghumt0
Treatment
NaCle0
Outcome
inorganic solutes accumulatione4
Direction
Similare4

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sorghum
Sorghum · Taxon · picture of the genus (one of its species)Evelyn Simak · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

t0

“in grain and forage sorghum”

✓ located verbatim in the source · title, characters 63–90 · show in text ↑
e0

“Sorghum seeds were sown between two paper towels moistened with deionized water and also NaCl solution (50 mM) for 10 days”

✓ located verbatim in the source · abstract, characters 285–407 · show in text ↑
e4

“Similar results for inorganic solutes accumulation in both genotypes”

✓ located verbatim in the source · abstract, characters 864–932 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

BRS 310 was more tolerant to salinity than BRS 800.

Taxon
sorghumSorghumt0
Material
BRS 310e5
Treatment
salinitye5
Outcome
tolerant to salinitye5
Direction
more tolerante5
Comparator
BRS 800e5

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sorghum
Sorghum · Taxon · picture of the genus (one of its species)Evelyn Simak · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

t0

“in grain and forage sorghum”

✓ located verbatim in the source · title, characters 63–90 · show in text ↑
e5

“BRS 310 genotype is more tolerant to salinity than BRS 800 genotype”

✓ located verbatim in the source · abstract, characters 1066–1133 · show in text ↑
Mechanismauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

BRS 310 tolerance is likely related to better protection against oxidative damage through induced ascorbate peroxidase and catalase.

Taxon
sorghumSorghumt0
Material
BRS 310e5
Gene
ascorbate peroxidase and catalasee6
Outcome
a better protection mechanism against oxidative damagee6

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Sorghum
Sorghum · Taxon · picture of the genus (one of its species)Evelyn Simak · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

t0

“in grain and forage sorghum”

✓ located verbatim in the source · title, characters 63–90 · show in text ↑
e5

“BRS 310 genotype is more tolerant to salinity than BRS 800 genotype”

✓ located verbatim in the source · abstract, characters 1066–1133 · show in text ↑
e6

“it is likely to be related to a better protection mechanism against oxidative damage by inducing activities of antioxidant enzymes, such as ascorbate peroxidase and catalase”

✓ located verbatim in the source · abstract, characters 1138–1311 · show in text ↑

sodium chloride · growth · SorghumResults differ

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18 papers in the same direction as this paper · 9 in the opposite direction

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sodium chloride · molecular: metabolites · SorghumPositive and negative results

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salinity · growth · SorghumResults differ

89 papers: 11 positive, 78 negative or no effect

77 papers in the same direction as this paper · 11 in the opposite direction

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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.