Abstract
About 20% of the cultivated land and almost half of the irrigated lands of the planet are affected by the salinization of the soil and the water. Rice cultivar BRS AG is the first grown for other purposes than human consumption and can be used in the production of ethanol and animal feed. The objective of this study was to evaluate the germination, morphological characteristics, proline accumulation, and the expression of the genes involved in the metabolism of proline in rice plants, cv. BRS AG, cultured in vitro under salt stress. The plants were cultivated in a culture MS medium with six different NaCl concentrations (0, 32, 68, 102, 136, 170 mM). The germination was evaluated at days 7 and 14, and morphological characteristics were analyzed only at day 21. For proline quantification and expression of the genes required for its metabolism (P5CS1, P5CS2, P5CR, OAT, P5CDH and PDH), two concentrations (136 mM and 0 mM) of NaCl were used, and the samples were collected at days 5, 10, 15, and 20. The results indicate that the growth of rice cv. BRS is completely impaired at 170 mM NaCl, and at 136 mM NaCl. Regarding proline content, in stressed plants, it was higher (1.24 mM g -1 MF) than in the control plants, and was directly related to a high expression observed for the P5CS2 (QR=5.50) and OAT (QR=5.44) genes at 20 days of stress, which explains the high proline concentration at this period. According to the results, rice cultivar BRS AG, is considered tolerant to salt stress.
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Claims 5
Claim · model-written summary
Salt at 170 mM NaCl completely impaired growth of rice cv. BRS in vitro.
- Taxon
- rice
Oryza sativae3 - Material
- cv. BRSe3
- Treatment
- 170 mM NaCle3
- Outcome
- growthe3
- Direction
- completely impairede3
- Setting
- in vitroe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“rice plants, cv. BRS AG, cultured in vitro under salt stress”
e3“the growth of rice cv. BRS is completely impaired at 170 mM NaCl, and at 136 mM NaCl”
Claim · model-written summary
Proline content was higher in salt-stressed rice plants (1.24 mM g -1 MF) than in control plants.
- Taxon
- riceOryza sativae1
- Treatment
- stressed plantse4
- Outcome
- proline contente4
- Direction
- highere4
- Value
- 1.24 mM g -1 MFe4
- Comparator
- control plantse4
- Setting
- in vitroe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“rice plants, cv. BRS AG, cultured in vitro under salt stress”
e4“Regarding proline content, in stressed plants, it was higher (1.24 mM g -1 MF) than in the control plants”
Claim · model-written summary
P5CS2 expression was high (QR=5.50) in rice after 20 days of salt stress.
- Taxon
- riceOryza sativae1
- Treatment
- 20 days of stresse5
- Gene
- P5CS2e5
- Outcome
- expressione5
- Direction
- highe5
- Value
- QR=5.50e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“rice plants, cv. BRS AG, cultured in vitro under salt stress”
e5“was directly related to a high expression observed for the P5CS2 (QR=5.50) and OAT (QR=5.44) genes at 20 days of stress”
Claim · model-written summary
OAT expression was high (QR=5.44) in rice after 20 days of salt stress.
- Taxon
- riceOryza sativae1
- Treatment
- 20 days of stresse5
- Gene
- OATe5
- Outcome
- expressione5
- Direction
- highe5
- Value
- QR=5.44e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“rice plants, cv. BRS AG, cultured in vitro under salt stress”
e5“was directly related to a high expression observed for the P5CS2 (QR=5.50) and OAT (QR=5.44) genes at 20 days of stress”
Claim · model-written summary
The authors consider rice cultivar BRS AG tolerant to salt stress.
- Taxon
- riceOryza sativae6
- Material
- BRS AGe6
- Outcome
- tolerant to salt stresse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“rice cultivar BRS AG, is considered tolerant to salt stress”
The same questions in other papers
sodium chloride · growth · Oryza sativa (rice)Results differ
99 papers in the same direction as this paper · 28 in the opposite direction
- no effect
- positive
- positive
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See all 128 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.