Abstract
Plant growth and productivity are greatly affected due to changes in the environmental conditions. In the present investigation, the interactive effects of two important abiotic stresses, i.e., water deficit and Al toxicity, were examined in the seedlings of two rice (Oryza sativa L.) cvs. Malviya-36 (water deficit/Al sensitive) and Vandana (water deficit/Al tolerant). When 15 days grown seedlings were exposed to water deficit (created with 15 % polyethylene glycol 6000) or Al (1 mM AlCl3) treatment or both the treatments together for 48 h, the lengths of root/shoot, relative water content, and chlorophyll greatly declined in the seedlings of the sensitive cultivar, whereas in the tolerant seedlings, either little or insignificant decline in these parameters was observed due to the treatments. Seedlings subjected to water deficit or Al treatment alone or in combination showed increased intensity of the isoenzyme activity bands of superoxide dismutase (SOD), guaiacol peroxidase (GPX), and ascorbate peroxidase (APX) in in-gel activity staining studies. Water deficit caused decrease in intensity of catalase (CAT) activity bands; however, when seedlings were exposed to AlCl3 alone or in combination with water deficit, the intensity of the CAT isoforms increased in both the rice cultivars. The level of expression of the activity bands of SOD, CAT, GPX, and APX was always higher in the seedlings of tolerant cv. Vandana compared to the sensitive cv. Malviya-36 under both controls as well as stress treatments. Higher intensity of isozymes representing higher activity levels of antioxidative enzymes in the rice seedlings and their further increase under water deficit, Al exposure, or in combination of both the stresses appears to serve as useful marker for specifying a combination of water deficit and Al tolerance in rice.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
In sensitive cv. Malviya-36 seedlings, root/shoot length, relative water content and chlorophyll greatly declined under water deficit, Al treatment, or both.
- Taxon
- rice
Oryza sativae1 - Material
- Malviya-36e1
- Organ / stage
- seedlingse2
- Treatment
- water deficit (created with 15 % polyethylene glycol 6000) or Al (1 mM AlCl3) treatment or bothe2
- Outcome
- the lengths of root/shoot, relative water content, and chlorophylle2
- Direction
- greatly declinede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“were examined in the seedlings of two rice (Oryza sativa L.) cvs. Malviya-36 (water deficit/Al sensitive) and Vandana (water deficit/Al tolerant)”
e2“When 15 days grown seedlings were exposed to water deficit (created with 15 % polyethylene glycol 6000) or Al (1 mM AlCl3) treatment or both the treatments together for 48 h, the lengths of root/shoot, relative water content, and chlorophyll greatly declined in the seedlings of the sensitive cultivar, whereas in the tolerant seedlings, either little or insignificant decline in these parameters was observed due to the treatments”
Claim · model-written summary
In tolerant cv. Vandana seedlings, root/shoot length, relative water content and chlorophyll showed only little or insignificant decline under water deficit, Al treatment, or both.
- Taxon
- riceOryza sativae1
- Material
- Vandanae1
- Organ / stage
- seedlingse2
- Treatment
- water deficit (created with 15 % polyethylene glycol 6000) or Al (1 mM AlCl3) treatment or bothe2
- Outcome
- the lengths of root/shoot, relative water content, and chlorophylle2
- Direction
- little or insignificant declinee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“were examined in the seedlings of two rice (Oryza sativa L.) cvs. Malviya-36 (water deficit/Al sensitive) and Vandana (water deficit/Al tolerant)”
e2“When 15 days grown seedlings were exposed to water deficit (created with 15 % polyethylene glycol 6000) or Al (1 mM AlCl3) treatment or both the treatments together for 48 h, the lengths of root/shoot, relative water content, and chlorophyll greatly declined in the seedlings of the sensitive cultivar, whereas in the tolerant seedlings, either little or insignificant decline in these parameters was observed due to the treatments”
Claim · model-written summary
Water deficit, Al treatment, or both increased the intensity of SOD, GPX and APX isoenzyme activity bands in rice seedlings.
- Taxon
- riceOryza sativae1
- Organ / stage
- seedlingse2
- Treatment
- water deficit or Al treatment alone or in combinatione2
- Gene
- superoxide dismutase (SOD), guaiacol peroxidase (GPX), and ascorbate peroxidase (APX)e2
- Outcome
- intensity of the isoenzyme activity bandse2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“were examined in the seedlings of two rice (Oryza sativa L.) cvs. Malviya-36 (water deficit/Al sensitive) and Vandana (water deficit/Al tolerant)”
e2“Seedlings subjected to water deficit or Al treatment alone or in combination showed increased intensity of the isoenzyme activity bands of superoxide dismutase (SOD), guaiacol peroxidase (GPX), and ascorbate peroxidase (APX) in in-gel activity staining studies”
Claim · model-written summary
Water deficit decreased the intensity of catalase (CAT) activity bands in rice.
- Taxon
- riceOryza sativae1
- Treatment
- Water deficite2
- Gene
- catalase (CAT)e2
- Outcome
- intensity of catalase (CAT) activity bandse2
- Direction
- decreasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“were examined in the seedlings of two rice (Oryza sativa L.) cvs. Malviya-36 (water deficit/Al sensitive) and Vandana (water deficit/Al tolerant)”
e2“Water deficit caused decrease in intensity of catalase (CAT) activity bands”
Claim · model-written summary
AlCl3 alone or in combination with water deficit increased the intensity of CAT isoforms in both rice cultivars.
- Taxon
- riceOryza sativae1
- Organ / stage
- seedlingse2
- Treatment
- AlCl3 alone or in combination with water deficite2
- Gene
- CATe2
- Outcome
- the intensity of the CAT isoformse2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“were examined in the seedlings of two rice (Oryza sativa L.) cvs. Malviya-36 (water deficit/Al sensitive) and Vandana (water deficit/Al tolerant)”
e2“when seedlings were exposed to AlCl3 alone or in combination with water deficit, the intensity of the CAT isoforms increased in both the rice cultivars”
Claim · model-written summary
The activity bands of SOD, CAT, GPX and APX were always higher in tolerant cv. Vandana than in sensitive cv. Malviya-36, under controls as well as stress.
- Taxon
- riceOryza sativae1
- Material
- tolerant cv. Vandanae2
- Organ / stage
- seedlingse2
- Gene
- SOD, CAT, GPX, and APXe2
- Outcome
- level of expression of the activity bandse2
- Direction
- highere2
- Qualifier
- under both controls as well as stress treatmentse2
- Comparator
- sensitive cv. Malviya-36e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“were examined in the seedlings of two rice (Oryza sativa L.) cvs. Malviya-36 (water deficit/Al sensitive) and Vandana (water deficit/Al tolerant)”
e2“The level of expression of the activity bands of SOD, CAT, GPX, and APX was always higher in the seedlings of tolerant cv. Vandana compared to the sensitive cv. Malviya-36 under both controls as well as stress treatments”
Claim · model-written summary
Higher isozyme band intensity, representing antioxidative enzyme activity, may serve as a marker for combined water deficit and Al tolerance in rice.
- Taxon
- riceOryza sativae1
- Outcome
- useful marker for specifying a combination of water deficit and Al tolerancee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Higher intensity of isozymes representing higher activity levels of antioxidative enzymes in the rice seedlings and their further increase under water deficit, Al exposure, or in combination of both the stresses appears to serve as useful marker for specifying a combination of water deficit and Al tolerance in rice”
The same questions in other papers
poly(ethylene glycol) · physiology: water · Oryza sativa (rice)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- positive
drought · physiology: water · Oryza sativa (rice)Positive and negative results
29 papers in the same direction as this paper · 62 in the opposite direction
- negative
- negative
- negative
88 papers more in this group
See all 92 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.