Paper · 2023 · Известия Российской академии наук Серия биологическая

Regulation of the Activity of Decarboxylating Malate Dehydrogenases in Corn Leaves during an Adaptive Response to Salt Stress

A. T. Epintsev; M. O. Gataullina

7
claims
14
verbatim quotes
0
citations
2
research areas
✓
Open access

Abstract

The effect of salt stress on the activity of decarboxylating malate dehydrogenases in maize leaves during the adaptive response of cellular metabolism to salt stress was studied. It was shown that excess NaCl concentrations cause an increase in the enzymatic activity of both NAD+-ME and NADP+-ME. The greatest contribution to the increase in the activity of NAD+-ME is made by the intensification of the expression of the nad-me2 gene. At the same time, the expression of nad-me1 under salinity increases to a lesser extent. Methyl-specific PCR showed an inverse relationship between the expression of nad-me2 and the degree of methylation of the promoter of this gene, while nad-me1 and nadf-me, apparently, are regulated by different mechanisms. A different functional role of each isoform of the studied malic enzymes in the adaptive response of cellular metabolism is assumed.

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Claims 7

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Excess NaCl increased NAD+-ME activity in maize leaves.

Treatment
excess NaCl concentrationse0
Gene
NAD+-MEe0
Outcome
enzymatic activity of both NAD+-ME and NADP+-MEe0
Direction
increasee0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Corn Leaves”

✓ located verbatim in the source · title, characters 71–82 · show in text ↑
e0

“excess NaCl concentrations cause an increase in the enzymatic activity of both NAD+-ME and NADP+-ME”

✓ located verbatim in the source · abstract, characters 197–296 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Excess NaCl increased NADP+-ME activity in maize leaves.

Treatment
excess NaCl concentrationse0
Gene
NADP+-MEe0
Outcome
enzymatic activitye0
Direction
increasee0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Corn Leaves”

✓ located verbatim in the source · title, characters 71–82 · show in text ↑
e0

“excess NaCl concentrations cause an increase in the enzymatic activity of both NAD+-ME and NADP+-ME”

✓ located verbatim in the source · abstract, characters 197–296 · show in text ↑
Mechanismauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

Increased nad-me2 expression made the greatest contribution to increased NAD+-ME activity.

Gene
nad-me2e0
Outcome
increase in the activity of NAD+-MEe0
Qualifier
intensification of the expressione0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Corn Leaves”

✓ located verbatim in the source · title, characters 71–82 · show in text ↑
e0

“The greatest contribution to the increase in the activity of NAD+-ME is made by the intensification of the expression of the nad-me2 gene”

✓ located verbatim in the source · abstract, characters 298–435 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Under salinity, nad-me1 expression increased to a lesser extent.

Treatment
salinitye0
Gene
nad-me1e0
Outcome
expression of nad-me1e0
Direction
increasese0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Corn Leaves”

✓ located verbatim in the source · title, characters 71–82 · show in text ↑
e0

“the expression of nad-me1 under salinity increases to a lesser extent”

✓ located verbatim in the source · abstract, characters 455–524 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

nad-me2 expression was inversely related to methylation of its promoter.

Gene
nad-me2e0
Outcome
expression of nad-me2e0
Direction
inversee0
Qualifier
degree of methylation of the promotere0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Corn Leaves”

✓ located verbatim in the source · title, characters 71–82 · show in text ↑
e0

“inverse relationship between the expression of nad-me2 and the degree of methylation of the promoter of this gene”

✓ located verbatim in the source · abstract, characters 556–669 · show in text ↑
Observationauthor interpretationoriginal resultmeasured

Claim · model-written summary

nad-me1 and nadf-me apparently have different regulatory mechanisms.

Gene
nad-me1 and nadf-mee0
Outcome
regulated by different mechanismse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Corn Leaves”

✓ located verbatim in the source · title, characters 71–82 · show in text ↑
e0

“nad-me1 and nadf-me, apparently, are regulated by different mechanisms”

✓ located verbatim in the source · abstract, characters 677–747 · show in text ↑
Observationhypothesisoriginal resultmeasured

Claim · model-written summary

The isoforms were assumed to play different roles in metabolic adaptation.

Outcome
different functional role of each isoforme0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Corn Leaves”

✓ located verbatim in the source · title, characters 71–82 · show in text ↑
e0

“A different functional role of each isoform of the studied malic enzymes in the adaptive response of cellular metabolism is assumed”

✓ located verbatim in the source · abstract, characters 749–880 · show in text ↑

sodium chloride · physiology: enzyme activity · Zea mays (maize)Positive and negative results

5 papers: 2 positive, 3 negative or no effect

1 paper in the same direction as this paper · 3 in the opposite direction

  1. negative
  2. negative
  3. negative

1 paper more in this group

See all 5 papers →

salinity · molecular: expression · Zea mays (maize)Positive and negative results

32 papers: 22 positive, 10 negative or no effect

21 papers in the same direction as this paper · 10 in the opposite direction

  1. negative
  2. negative
  3. negative

28 papers more in this group

See all 32 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.