Abstract
The influence of UV-B radiation on superoxide dismutase (SOD, EC 1.15.1.1) with reference to the activity and types of isoenzymes was studied in leaves of C 3 plants (potato, Solanum tuberosum L. cv. Désirée, and wheat, Triticum aestivum L. var. Almansor) and C 4 plants (maize, Zea mays L. var. LG12, and sorghum, Sorghum Pr 8515 Pioneer). Plants were grown under controlled conditions in growth chambers with and without UV-B radiation. After 10 days of irradiation it was found that UV-B affected both the total activity of SOD and the number and amount of isoforms in all plants. The total specific activity of SOD increased significantly in wheat, maize, and potato, whereas a decline was induced in sorghum. Native gels revealed that UV-B caused preferential changes of the SOD isoforms in all plants used. Inhibition studies with cyanide and hydrogen peroxide showed that, in maize, UV-B radiation caused a large accumulation of one Mn-SOD and in contrast the level of the Cu,Zn-SOD isoforms decreased. In potato leaves, UV-B changed the pattern of SOD isoenzymes causing the appearance of one isoform and the disappearance of another. In wheat and sorghum the pattern of the isoenzymes was not altered, only their relative amounts. The rise in SOD activity in maize, potato, and wheat is possibly correlated with the tolerance of UV-B ascribed to these crops by different researchers and the sensitivity of sorghum to UV-B is possibly associated with the decrease in SOD activity.Key words: superoxide dismutase, UV-B, maize, potato, sorghum, wheat.
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 14
Claim · model-written summary
UV-B affected total SOD activity and the number and amount of SOD isoforms in all four plants
Not reportedDirection
Verbatim
e1“UV-B affected both the total activity of SOD and the number and amount of isoforms in all plants”
e2“leaves of C 3 plants”
e3“Plants were grown under controlled conditions in growth chambers with and without UV-B radiation”
Claim · model-written summary
UV-B increased the total specific activity of SOD in wheat significantly
- Taxon
- wheat
Triticum aestivume1 - Treatment
- UV-Be2
- Outcome
- total specific activity of SODe1
- Direction
- increasede1
- Comparator
- without UV-B radiatione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The total specific activity of SOD increased significantly in wheat, maize, and potato, whereas a decline was induced in sorghum”
e2“UV-B affected both the total activity of SOD and the number and amount of isoforms in all plants”
e3“Plants were grown under controlled conditions in growth chambers with and without UV-B radiation”
Claim · model-written summary
UV-B increased the total specific activity of SOD in maize significantly
- Treatment
- UV-Be2
- Outcome
- total specific activity of SODe1
- Direction
- increasede1
- Comparator
- without UV-B radiatione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The total specific activity of SOD increased significantly in wheat, maize, and potato, whereas a decline was induced in sorghum”
e2“UV-B affected both the total activity of SOD and the number and amount of isoforms in all plants”
e3“Plants were grown under controlled conditions in growth chambers with and without UV-B radiation”
Claim · model-written summary
UV-B increased the total specific activity of SOD in potato significantly
- Taxon
- potato
Solanum tuberosume1 - Treatment
- UV-Be2
- Outcome
- total specific activity of SODe1
- Direction
- increasede1
- Comparator
- without UV-B radiatione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The total specific activity of SOD increased significantly in wheat, maize, and potato, whereas a decline was induced in sorghum”
e2“UV-B affected both the total activity of SOD and the number and amount of isoforms in all plants”
e3“Plants were grown under controlled conditions in growth chambers with and without UV-B radiation”
Claim · model-written summary
UV-B decreased the total specific activity of SOD in sorghum
- Treatment
- UV-Be2
- Outcome
- total specific activity of SODe1
- Direction
- declinee1
- Comparator
- without UV-B radiatione3
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The total specific activity of SOD increased significantly in wheat, maize, and potato, whereas a decline was induced in sorghum”
e2“UV-B affected both the total activity of SOD and the number and amount of isoforms in all plants”
e3“Plants were grown under controlled conditions in growth chambers with and without UV-B radiation”
Claim · model-written summary
UV-B caused preferential changes of SOD isoforms in all plants used (C 3 and C 4 plants)
Not reportedDirection
Verbatim
e1“Native gels revealed that UV-B caused preferential changes of the SOD isoforms in all plants used”
e2“leaves of C 3 plants”
e3“Plants were grown under controlled conditions in growth chambers with and without UV-B radiation”
Claim · model-written summary
In maize, UV-B caused a large accumulation of one Mn-SOD isoform
- Treatment
- UV-B radiatione1
- Gene
- Mn-SODe1
- Outcome
- accumulation of one Mn-SODe1
- Direction
- accumulatione1
- Comparator
- without UV-B radiatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Inhibition studies with cyanide and hydrogen peroxide showed that, in maize, UV-B radiation caused a large accumulation of one Mn-SOD and in contrast the level of the Cu,Zn-SOD isoforms decreased”
e2“Plants were grown under controlled conditions in growth chambers with and without UV-B radiation”
Claim · model-written summary
In maize, UV-B decreased the level of the Cu,Zn-SOD isoforms
- Treatment
- UV-B radiatione1
- Gene
- Cu,Zn-SODe1
- Outcome
- level of the Cu,Zn-SOD isoformse1
- Direction
- decreasede1
- Comparator
- without UV-B radiatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Inhibition studies with cyanide and hydrogen peroxide showed that, in maize, UV-B radiation caused a large accumulation of one Mn-SOD and in contrast the level of the Cu,Zn-SOD isoforms decreased”
e2“Plants were grown under controlled conditions in growth chambers with and without UV-B radiation”
Claim · model-written summary
In potato, UV-B caused the appearance of one SOD isoform
- Taxon
- potatoSolanum tuberosume1
- Treatment
- UV-Be1
- Outcome
- appearance of one isoforme1
- Comparator
- without UV-B radiatione2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In potato leaves, UV-B changed the pattern of SOD isoenzymes causing the appearance of one isoform and the disappearance of another”
e2“Plants were grown under controlled conditions in growth chambers with and without UV-B radiation”
Claim · model-written summary
In potato, UV-B caused the disappearance of another SOD isoform
- Taxon
- potatoSolanum tuberosume1
- Treatment
- UV-Be1
- Outcome
- disappearance of anothere1
- Comparator
- without UV-B radiatione2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In potato leaves, UV-B changed the pattern of SOD isoenzymes causing the appearance of one isoform and the disappearance of another”
e2“Plants were grown under controlled conditions in growth chambers with and without UV-B radiation”
Claim · model-written summary
In wheat, UV-B did not alter the pattern of SOD isoenzymes, only their relative amounts
- Taxon
- wheatTriticum aestivume1
- Treatment
- UV-Be2
- Outcome
- pattern of the isoenzymese1
- Comparator
- without UV-B radiatione3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In wheat and sorghum the pattern of the isoenzymes was not altered, only their relative amounts”
e2“UV-B affected both the total activity of SOD and the number and amount of isoforms in all plants”
e3“Plants were grown under controlled conditions in growth chambers with and without UV-B radiation”
Claim · model-written summary
In sorghum, UV-B did not alter the pattern of SOD isoenzymes, only their relative amounts
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In wheat and sorghum the pattern of the isoenzymes was not altered, only their relative amounts”
e2“UV-B affected both the total activity of SOD and the number and amount of isoforms in all plants”
e3“Plants were grown under controlled conditions in growth chambers with and without UV-B radiation”
Claim · model-written summary
The rise in SOD activity in maize, potato and wheat is possibly correlated with UV-B tolerance
- Taxon
- maize, potato, and wheatSolanum tuberosumTriticum aestivum
Zea mayse1 - Treatment
- UV-Be1
- Outcome
- tolerance of UV-Be1
- Direction
- risee1
- Qualifier
- possibly correlatede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The rise in SOD activity in maize, potato, and wheat is possibly correlated with the tolerance of UV-B ascribed to these crops”
Claim · model-written summary
The sensitivity of sorghum to UV-B is possibly associated with a decrease in SOD activity
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the sensitivity of sorghum to UV-B is possibly associated with the decrease in SOD activity”
The same questions in other papers
uv · physiology: antioxidant enzymes · Zea mays (maize)Results differ
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
uv · physiology: antioxidant enzymes · Triticum aestivum (wheat)Results differ
7 papers in the same direction as this paper · 5 in the opposite direction
- negative
- no effect
- negative
9 papers more in this group
See all 13 papers →uv · physiology: antioxidant enzymes · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
- positive
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.