Abstract
A greenhouse experiment was conducted to examine the alleviating role of thiourea (TU) on antioxidants and some vital physiological attributes in salt-stressed plants of two maize cultivars. The maize cv. DK 5783 performed better than cv. Apex 836 in an initial experiment. Of the six TU levels used in the initial experiment, 400 and 500 mg L-1 were chosen for subsequent studies. The two cultivars were subjected to saline stress (100 mM NaCl) and two levels of TU were applied presowing or as foliage spray. Salt stress suppressed total biomass, maximum fluorescence yield (Fv/Fm), chlorophyll, and leaf water potential ($\Psi$w), but it increased proline, hydrogen peroxide (H2O2), malondialdehyde (MDA), leaf osmolality (LO), membrane permeability (MP), and antioxidant enzymes. Exogenous TU application resulted in considerable increases in the dry weight of salt sensitive and tolerant cultivars (38% and 35%, respectively). TU partially improved the salt tolerance of maize plants; it reduced Na+ but increased N, K+, Ca2+, and P in the maize plants under saline regimes. TU regulated the growth of maize plants under stress conditions by reducing MP, MDA, and H2O2 levels, and altering activities of antioxidant enzymes as well as increasing photosynthetic pigments under a saline regime.
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Claims 12
Claim · model-written summary
DK 5783 performed better than Apex 836 in the initial experiment.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maize cv. DK 5783 performed better than cv. Apex 836”
Claim · model-written summary
Salt stress suppressed biomass, fluorescence yield, chlorophyll and water potential.
- Treatment
- Salt stresse0
- Outcome
- total biomass, maximum fluorescence yield (Fv/Fm), chlorophyll, and leaf water potential ($\Psi$w)e0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress suppressed total biomass, maximum fluorescence yield (Fv/Fm), chlorophyll, and leaf water potential ($\Psi$w)”
t0“Zea mays L. plants”
Claim · model-written summary
Salt stress increased proline, hydrogen peroxide and malondialdehyde.
- Treatment
- Salt stresse0
- Outcome
- proline, hydrogen peroxide (H2O2), malondialdehyde (MDA)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress suppressed total biomass, maximum fluorescence yield (Fv/Fm), chlorophyll, and leaf water potential ($\Psi$w), but it increased proline, hydrogen peroxide (H2O2), malondialdehyde (MDA), leaf osmolality (LO), membrane permeability (MP), and antioxidant enzymes”
t0“Zea mays L. plants”
Claim · model-written summary
Salt stress increased leaf osmolality, membrane permeability and antioxidant enzymes.
- Treatment
- salt-stressedt0
- Outcome
- leaf osmolality (LO), membrane permeability (MP), and antioxidant enzymese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it increased proline, hydrogen peroxide (H2O2), malondialdehyde (MDA), leaf osmolality (LO), membrane permeability (MP), and antioxidant enzymes”
t0“salt-stressed Zea mays L. plants”
Claim · model-written summary
Thiourea increased dry weight of the salt sensitive cultivar by 38%.
- Material
- salt sensitivee0
- Treatment
- Exogenous TU applicatione0
- Outcome
- dry weighte0
- Direction
- increasese0
- Value
- 38%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous TU application resulted in considerable increases in the dry weight of salt sensitive and tolerant cultivars (38% and 35%, respectively)”
t0“Zea mays L. plants”
Claim · model-written summary
Thiourea increased dry weight of the salt tolerant cultivar by 35%.
- Material
- tolerant cultivarse0
- Treatment
- Exogenous TU applicatione0
- Outcome
- dry weighte0
- Direction
- increasese0
- Value
- 35%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous TU application resulted in considerable increases in the dry weight of salt sensitive and tolerant cultivars (38% and 35%, respectively)”
t0“Zea mays L. plants”
Claim · model-written summary
Thiourea reduced Na+ in maize under saline regimes.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“TU partially improved the salt tolerance of maize plants; it reduced Na+ but increased N, K+, Ca2+, and P in the maize plants under saline regimes”
Claim · model-written summary
Thiourea increased N, K+ and Ca2+ in maize under saline regimes.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“TU partially improved the salt tolerance of maize plants; it reduced Na+ but increased N, K+, Ca2+, and P in the maize plants under saline regimes”
Claim · model-written summary
Thiourea increased P in maize under saline regimes.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“TU partially improved the salt tolerance of maize plants; it reduced Na+ but increased N, K+, Ca2+, and P in the maize plants under saline regimes”
Claim · model-written summary
Thiourea reduced membrane permeability, malondialdehyde and hydrogen peroxide under salt stress.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“TU regulated the growth of maize plants under stress conditions by reducing MP, MDA, and H2O2 levels”
Claim · model-written summary
Thiourea altered antioxidant enzyme activities under salt stress.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“TU regulated the growth of maize plants under stress conditions by reducing MP, MDA, and H2O2 levels, and altering activities of antioxidant enzymes”
Claim · model-written summary
Thiourea increased photosynthetic pigments under saline conditions.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“TU regulated the growth of maize plants under stress conditions by reducing MP, MDA, and H2O2 levels, and altering activities of antioxidant enzymes as well as increasing photosynthetic pigments under a saline regime”
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See all 51 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.