Abstract
An experiment was conducted in growth chamber to assess the role of glycinebaine (GB) in mineral nutrient status of rice (Oryza saliva L.) seedlings under saline conditions. Two rice varieties i.e. NIAB IRRI-9 and Super Basmati were grown in full strength Hoagland's nutrient solution supplied with four levels of GB i.e. Control (without GB), 5, 10 and 15 mM and three salinity treatments i.e. normal Hoagland's nutrient solution (without salt), 60 and 120 mM NaCl. Salt stress markedly reduced shoots and roots fresh and dry biomass, chlorophyll a, b and total chlorophyll contents, shoot and root K+ concentrations while shoots and roots Na+ and Cl-contents increased with increase in salinity levels. Exogenous application of GB through rooting medium did not affect shoot fresh and dry weights while root dry weight decreased by exogenously applied GB. Chlorophyll pigments and root Ca(2+) were increased while shoot and root Na+, K+ and Cl- decreased by exogenous application of GB in salt stressed plants as compared to non-stressed plants of both varieties. Overall, variety NIAB-IRR-9 was high in plant biomass production as compared to Super Basmati. Glycinebetaine ameliorated the adverse effects of salt by decreasing shoots and roots Na+. and Cl- concentrations.
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Claims 8
Claim · model-written summary
Salinity reduced shoot and root biomass and chlorophyll.
- Taxon
- rice
Oryza sativat0 - Treatment
- Salt stresse0
- Outcome
- shoots and roots fresh and dry biomass, chlorophyll a, b and total chlorophyll contentse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress markedly reduced shoots and roots fresh and dry biomass, chlorophyll a, b and total chlorophyll contents”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Salinity reduced shoot and root potassium concentrations.
- Taxon
- riceOryza sativat0
- Treatment
- Salt stresse0
- Outcome
- shoot and root K+ concentrationse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress markedly reduced shoots and roots fresh and dry biomass, chlorophyll a, b and total chlorophyll contents, shoot and root K+ concentrations”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Salinity increased shoot and root sodium and chloride contents.
- Taxon
- riceOryza sativat0
- Treatment
- salinity levelse0
- Outcome
- shoots and roots Na+ and Cl-contentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“shoots and roots Na+ and Cl-contents increased with increase in salinity levels”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Glycinebetaine did not affect shoot fresh or dry weight.
- Taxon
- riceOryza sativat0
- Treatment
- GBe0
- Outcome
- shoot fresh and dry weightse0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous application of GB through rooting medium did not affect shoot fresh and dry weights”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Glycinebetaine decreased root dry weight.
- Taxon
- riceOryza sativat0
- Treatment
- GBe0
- Outcome
- root dry weighte0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root dry weight decreased by exogenously applied GB”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Glycinebetaine increased chlorophyll pigments and root calcium in salt-stressed plants.
- Taxon
- riceOryza sativat0
- Treatment
- GBe0
- Outcome
- Chlorophyll pigments and root Ca(2+)e0
- Direction
- increasede0
- Comparator
- non-stressed plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll pigments and root Ca(2+) were increased while shoot and root Na+, K+ and Cl- decreased by exogenous application of GB in salt stressed plants as compared to non-stressed plants of both varieties”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Glycinebetaine decreased shoot and root sodium, potassium, and chloride in salt-stressed plants.
- Taxon
- riceOryza sativat0
- Treatment
- GBe0
- Outcome
- shoot and root Na+, K+ and Cl-e0
- Direction
- decreasede0
- Comparator
- non-stressed plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll pigments and root Ca(2+) were increased while shoot and root Na+, K+ and Cl- decreased by exogenous application of GB in salt stressed plants as compared to non-stressed plants of both varieties”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
NIAB-IRR-9 produced more biomass than Super Basmati.
- Taxon
- riceOryza sativat0
- Material
- NIAB-IRR-9e0
- Outcome
- plant biomass productione0
- Direction
- highe0
- Comparator
- Super Basmatie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“variety NIAB-IRR-9 was high in plant biomass production as compared to Super Basmati”
t0“rice (Oryza sativa L.)”
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