Abstract
In this study, individual and combined effects of boron and sodium chloride salinity on growth, photosynthetic pigments (chlorophyll and carotenoids content), enzymatic activities (catalase and ascorbate peroxidase), hydrogen peroxide content, malondialdehyde content, proline accumulation, and some ion contents, such as B–, Na+, Cl–, K+, Ca2+, Mg2+ of purslane (Portulaca oleracea L.) were investigated. Five B levels (0, 4, 8, 16, 24, 40 mg/kg) and 100 mM NaCl were applied to the soil and mixed before sowing. Results showed that purslane growth was reduced significantly by higher B levels and salinity due to ion toxicity and osmotic stress. Also, content of photosynthetic pigments increased with both higher B levels and salinity, but they were decreased with combined effects of them. Tissue B–, Na+, Cl–, K+ and Ca2+ levels in shoot increased with applied NaCl, but B levels applied together with NaCl caused a decrease in B– content due to antagonistic effects between B– and Cl– ions. The MDA content, proline accumulation, and H2O2 content increased with higher B levels, but salinity caused a decrease in MDA content. The catalase and ascorbate peroxidase activities increased with B and salinity combination, but did not change with salinity. Increasing B reduced the catalase activity. It is suggested that purslane has the potential to manage the amount of soluble boron and also it has a promising potential that can be grown in B-rich and saline soils.
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Claims 12
Claim · model-written summary
Higher boron levels and salinity significantly reduced purslane growth.
Not reportedComparator
Verbatim
e0“purslane growth was reduced significantly by higher B levels and salinity”
Claim · model-written summary
Higher boron levels increased photosynthetic pigments.
- Taxon
- purslanee1
- Treatment
- higher B levelse0
- Outcome
- content of photosynthetic pigmentse0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“content of photosynthetic pigments increased with both higher B levels and salinity”
e1“purslane (Portulaca oleracea L.)”
Claim · model-written summary
Salinity increased photosynthetic pigments.
Not reportedComparator
Verbatim
e0“content of photosynthetic pigments increased with both higher B levels and salinity”
e1“purslane (Portulaca oleracea L.)”
Claim · model-written summary
Combined boron and salinity decreased photosynthetic pigments.
- Taxon
- purslanee1
- Treatment
- combined effects of theme0
- Outcome
- photosynthetic pigmentse0
- Direction
- decreasede0
Not reportedComparator
Verbatim
e0“content of photosynthetic pigments increased with both higher B levels and salinity, but they were decreased with combined effects of them”
e1“purslane (Portulaca oleracea L.)”
Claim · model-written summary
Applied NaCl increased shoot B, Na, Cl, K and Ca levels.
- Taxon
- purslanee1
- Organ / stage
- shoote0
- Treatment
- applied NaCle0
- Outcome
- Tissue B–, Na+, Cl–, K+ and Ca2+ levelse0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Tissue B–, Na+, Cl–, K+ and Ca2+ levels in shoot increased with applied NaCl”
e1“purslane (Portulaca oleracea L.)”
Claim · model-written summary
Boron applied with NaCl decreased tissue boron content.
Not reportedComparator
Verbatim
e0“B levels applied together with NaCl caused a decrease in B– content”
e1“purslane (Portulaca oleracea L.)”
Claim · model-written summary
Higher boron levels increased MDA, proline and H2O2 content.
- Taxon
- purslanee1
- Treatment
- higher B levelse0
- Outcome
- MDA content, proline accumulation, and H2O2 contente0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“The MDA content, proline accumulation, and H2O2 content increased with higher B levels”
e1“purslane (Portulaca oleracea L.)”
Claim · model-written summary
Salinity decreased MDA content.
Not reportedComparator
Verbatim
e0“salinity caused a decrease in MDA content”
e1“purslane (Portulaca oleracea L.)”
Claim · model-written summary
Combined boron and salinity increased catalase and ascorbate peroxidase activities.
- Taxon
- purslanee1
- Treatment
- B and salinity combinatione0
- Outcome
- catalase and ascorbate peroxidase activitiese0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“The catalase and ascorbate peroxidase activities increased with B and salinity combination”
e1“purslane (Portulaca oleracea L.)”
Claim · model-written summary
Salinity did not change catalase and ascorbate peroxidase activities.
- Taxon
- purslanee1
- Treatment
- salinitye0
- Outcome
- catalase and ascorbate peroxidase activitiese0
- Direction
- did not changee0
Not reportedComparator
Verbatim
e0“The catalase and ascorbate peroxidase activities increased with B and salinity combination, but did not change with salinity”
e1“purslane (Portulaca oleracea L.)”
Claim · model-written summary
Increasing boron reduced catalase activity.
Not reportedComparator
Verbatim
e0“Increasing B reduced the catalase activity”
e1“purslane (Portulaca oleracea L.)”
Claim · model-written summary
Authors suggest purslane can manage soluble boron and grow in boron-rich saline soils.
Verbatim
e0“It is suggested that purslane has the potential to manage the amount of soluble boron and also it has a promising potential that can be grown in B-rich and saline soils”