Abstract
Considerable amount of research have indicated that exogenous application various compounds such as compatible solutes, plant hormones and antioxidants could enhanced salt stress tolerance in plants. However, the salt stress alleviating effect of these compounds on Malaysian rice varieties has not been investigated. Therefore, this study was undertaken with the objective to examine the salt stress mitigating effect of glycine betaine and ascorbic acid on rice shoot apices of two Malaysian rice varieties under NaCl stress. Results clearly indicated that supplementation of glycine betaine at 5 and 10 mM effectively ameliorates salt stress induced damages resulted in improved plant height, root length, biomass and total chlorophyll in both varieties tested, MR220 and MR253 as compared to salt stress condition. However, further increased of glycine betaine to 15 and 20 mM did not showed further enhancement on the overall plant growth. Supplementation of 5 mM glycine betaine increased the plant height of MR220 and MR253 to 17.0 cm and 13.3 cm as compared to 9.8 cm and 10.3 cm in salt stress media. It was noted that supplementation of of glycine betaine successfully increase the total chlorophyll content from 7.0 mg/mL FW to 13.4 and 9.1 mg/mL FW for MR220 and 8.7 and 13.8 mg/mL FW for MR253 at 5 and 10 mM respectively. Conversely, supplementation of ascorbic acidat all concentrations tested did not showed salt stress mitigating effect on the growth of rice shoot. Furthermore, ascorbic acid supplemented at 10, 15 and 20 mM was found exerted negative impact on plant growth with reduction in all growth parameters measured. In short, results from the study clearly indicated the potential of glycine betaine in mitigating salt-stress induced damages. However, more studies need to be carry out in the near future based on glasshouse and field scale trials to study the changes in the rice agronomic traits, especially the yield component should be evaluated because tolerance in stress could not represent the final yield.
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Claims 11
Claim · model-written summary
Glycine betaine at 5 and 10 mM improved height, root length, and biomass in both rice varieties relative to salt stress alone.
- Taxon
- rice
Oryza sativat0 - Material
- MR220 and MR253e0
- Treatment
- glycine betaine at 5 and 10 mMe0
- Outcome
- plant height, root length, biomasse0
- Direction
- improvede0
- Comparator
- salt stress conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“supplementation of glycine betaine at 5 and 10 mM effectively ameliorates salt stress induced damages resulted in improved plant height, root length, biomass and total chlorophyll in both varieties tested, MR220 and MR253 as compared to salt stress condition”
t0“rice”
Claim · model-written summary
Glycine betaine at 5 and 10 mM improved total chlorophyll in both rice varieties relative to salt stress alone.
- Taxon
- riceOryza sativat0
- Material
- MR220 and MR253e0
- Treatment
- glycine betaine at 5 and 10 mMe0
- Outcome
- total chlorophylle0
- Direction
- improvede0
- Comparator
- salt stress conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“supplementation of glycine betaine at 5 and 10 mM effectively ameliorates salt stress induced damages resulted in improved plant height, root length, biomass and total chlorophyll in both varieties tested, MR220 and MR253 as compared to salt stress condition”
t0“rice”
Claim · model-written summary
Increasing glycine betaine to 15 and 20 mM did not further enhance overall rice growth.
- Taxon
- riceOryza sativat0
- Treatment
- glycine betaine to 15 and 20 mMe0
- Outcome
- overall plant growthe0
- Direction
- did not showed further enhancemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“further increased of glycine betaine to 15 and 20 mM did not showed further enhancement on the overall plant growth”
t0“rice”
Claim · model-written summary
At 5 mM glycine betaine, MR220 height increased to 17.0 cm versus 9.8 cm in salt stress medium.
- Taxon
- riceOryza sativat0
- Material
- MR220e0
- Treatment
- 5 mM glycine betainee0
- Outcome
- plant heighte0
- Direction
- increasede0
- Value
- 17.0 cme0
- Qualifier
- 9.8 cme0
- Comparator
- salt stress mediae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Supplementation of 5 mM glycine betaine increased the plant height of MR220 and MR253 to 17.0 cm and 13.3 cm as compared to 9.8 cm and 10.3 cm in salt stress media”
t0“rice”
Claim · model-written summary
At 5 mM glycine betaine, MR253 height increased to 13.3 cm versus 10.3 cm in salt stress medium.
- Taxon
- riceOryza sativat0
- Material
- MR253e0
- Treatment
- 5 mM glycine betainee0
- Outcome
- plant heighte0
- Direction
- increasede0
- Value
- 13.3 cme0
- Qualifier
- 10.3 cme0
- Comparator
- salt stress mediae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Supplementation of 5 mM glycine betaine increased the plant height of MR220 and MR253 to 17.0 cm and 13.3 cm as compared to 9.8 cm and 10.3 cm in salt stress media”
t0“rice”
Claim · model-written summary
At 5 mM glycine betaine, MR220 total chlorophyll increased to 13.4 mg/mL FW from 7.0 mg/mL FW.
- Taxon
- riceOryza sativat0
- Material
- MR220e0
- Treatment
- 5 mMe1
- Outcome
- total chlorophyll contente0
- Direction
- increasee0
- Value
- 13.4e0
- Qualifier
- 7.0 mg/mL FWe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“glycine betaine successfully increase the total chlorophyll content from 7.0 mg/mL FW to 13.4 and 9.1 mg/mL FW for MR220 and 8.7 and 13.8 mg/mL FW for MR253 at 5 and 10 mM respectively”
e1“Supplementation of 5 mM glycine betaine increased the plant height of MR220 and MR253 to 17.0 cm and 13.3 cm as compared to 9.8 cm and 10.3 cm in salt stress media”
t0“rice”
Claim · model-written summary
At 10 mM glycine betaine, MR220 total chlorophyll increased to 9.1 mg/mL FW.
- Taxon
- riceOryza sativat0
- Material
- MR220e0
- Treatment
- 10 mMe0
- Outcome
- total chlorophyll contente0
- Direction
- increasee0
- Value
- 9.1 mg/mL FWe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“glycine betaine successfully increase the total chlorophyll content from 7.0 mg/mL FW to 13.4 and 9.1 mg/mL FW for MR220 and 8.7 and 13.8 mg/mL FW for MR253 at 5 and 10 mM respectively”
t0“rice”
Claim · model-written summary
At 5 mM glycine betaine, MR253 total chlorophyll increased to 8.7 mg/mL FW.
- Taxon
- riceOryza sativat0
- Material
- MR253e0
- Treatment
- 5 mMe1
- Outcome
- total chlorophyll contente0
- Direction
- increasee0
- Value
- 8.7e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“glycine betaine successfully increase the total chlorophyll content from 7.0 mg/mL FW to 13.4 and 9.1 mg/mL FW for MR220 and 8.7 and 13.8 mg/mL FW for MR253 at 5 and 10 mM respectively”
e1“Supplementation of 5 mM glycine betaine increased the plant height of MR220 and MR253 to 17.0 cm and 13.3 cm as compared to 9.8 cm and 10.3 cm in salt stress media”
t0“rice”
Claim · model-written summary
At 10 mM glycine betaine, MR253 total chlorophyll increased to 13.8 mg/mL FW.
- Taxon
- riceOryza sativat0
- Material
- MR253e0
- Treatment
- 10 mMe0
- Outcome
- total chlorophyll contente0
- Direction
- increasee0
- Value
- 13.8 mg/mL FWe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“glycine betaine successfully increase the total chlorophyll content from 7.0 mg/mL FW to 13.4 and 9.1 mg/mL FW for MR220 and 8.7 and 13.8 mg/mL FW for MR253 at 5 and 10 mM respectively”
t0“rice”
Claim · model-written summary
Ascorbic acid at all tested concentrations showed no salt stress mitigation in rice shoot growth.
- Taxon
- riceOryza sativae0
- Treatment
- ascorbic acidat all concentrations testede0
- Outcome
- growth of rice shoote0
- Direction
- did not showede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ascorbic acidat all concentrations tested did not showed salt stress mitigating effect on the growth of rice shoot”
Claim · model-written summary
Ascorbic acid at 10, 15 and 20 mM reduced all measured rice growth parameters.
- Taxon
- riceOryza sativat0
- Treatment
- ascorbic acid supplemented at 10, 15 and 20 mMe0
- Outcome
- all growth parameters measurede0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ascorbic acid supplemented at 10, 15 and 20 mM was found exerted negative impact on plant growth with reduction in all growth parameters measured”
t0“rice”
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