Paper · 2013 · Toxicology and Industrial Health

Physiological and biochemical mechanisms of allelopathy mediated by the allelochemical extracts of Phytolacca latbenia (Moq.) H. Walter

Nazif Ullah; Ihsan Ul Haq; Naila Safdar; et al.

8
claims
18
verbatim quotes
48
citations
2
research areas
—
Not open access

Abstract

In allelopathy, one plant suppresses the growth and development of other plant/plants by negatively affecting a variety of physiological and biochemical reactions. We checked the effects of methanolic extracts (allelochemical extracts) of Phytolacca latbenia (Moq.) H. Walter on antioxidant enzyme activities such as peroxidases (PODs), super oxide dismutases (SODs) and catalase (CAT) and on total protein contents (TPC), cellular injury (CI), and malondialdehyde (MDA) in the germinating seeds of Brassica napus L. (dicot) and Triticum aestivum L. (monocot). Both the crude methanolic extract root (CMER) and crude methanolic extract aerial (CMEA) of P. latbenia at 10000 ppm significantly reduced the POD activity in both the test seeds. The activity of SODs was significantly decreased by both CMER and CMEA in B. napus germinating seeds. A linear increase in the activity of CAT, CI, and MDA contents was found in both the test seeds with the increasing concentrations of CMEA and CMER, while TPC of the germinating seeds was found decreased. It is inferred that both the CMEA and CMER inhibited/delayed the seed germination, reduced the seedling growth by affecting a variety of biochemical and physiological attributes, and also caused cellular membrane injury in the germinating seeds of both the monocot and dicot seeds.

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Claims 8

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Both extracts at 10000 ppm significantly reduced POD activity in Brassica napus germinating seeds.

Taxon
Brassica napusBrassica napuse1
Treatment
crude methanolic extract root (CMER) and crude methanolic extract aerial (CMEA) of P. latbenia at 10000 ppme2
Interactor
P. latbeniaPhytolacca latbeniae2other
Outcome
POD activitye2
Direction
reducede2

Not reportedComparator

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

Brassica napus
Brassica napus · TaxonDidier Descouens · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“germinating seeds of Brassica napus L. (dicot) and Triticum aestivum L. (monocot)”

✓ located verbatim in the source · abstract, characters 478–559 · show in text ↑
e2

“Both the crude methanolic extract root (CMER) and crude methanolic extract aerial (CMEA) of P. latbenia at 10000 ppm significantly reduced the POD activity in both the test seeds”

✓ located verbatim in the source · abstract, characters 561–739 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Both extracts at 10000 ppm significantly reduced POD activity in Triticum aestivum germinating seeds.

Taxon
Triticum aestivumTriticum aestivume1
Treatment
crude methanolic extract root (CMER) and crude methanolic extract aerial (CMEA) of P. latbenia at 10000 ppme2
Interactor
P. latbeniaPhytolacca latbeniae2other
Outcome
POD activitye2
Direction
reducede2

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“germinating seeds of Brassica napus L. (dicot) and Triticum aestivum L. (monocot)”

✓ located verbatim in the source · abstract, characters 478–559 · show in text ↑
e2

“Both the crude methanolic extract root (CMER) and crude methanolic extract aerial (CMEA) of P. latbenia at 10000 ppm significantly reduced the POD activity in both the test seeds”

✓ located verbatim in the source · abstract, characters 561–739 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Both extracts significantly decreased SOD activity in Brassica napus germinating seeds.

Taxon
B. napusBrassica napuse3
Treatment
CMER and CMEAe3
Interactor
P. latbeniaPhytolacca latbeniae2other
Outcome
activity of SODse3
Direction
decreasede3

Not reportedComparator

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

Brassica napus
Brassica napus · TaxonDidier Descouens · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“germinating seeds of Brassica napus L. (dicot) and Triticum aestivum L. (monocot)”

✓ located verbatim in the source · abstract, characters 478–559 · show in text ↑
e2

“Both the crude methanolic extract root (CMER) and crude methanolic extract aerial (CMEA) of P. latbenia at 10000 ppm significantly reduced the POD activity in both the test seeds”

✓ located verbatim in the source · abstract, characters 561–739 · show in text ↑
e3

“The activity of SODs was significantly decreased by both CMER and CMEA in B. napus germinating seeds”

✓ located verbatim in the source · abstract, characters 741–841 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Increasing extract concentrations gave a linear increase in CAT, CI and MDA activity or content in Brassica napus seeds.

Taxon
Brassica napusBrassica napuse1
Treatment
increasing concentrations of CMEA and CMERe4
Outcome
activity of CAT, CI, and MDA contentse4
Direction
linear increasee4

Not reportedComparator

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

Brassica napus
Brassica napus · TaxonDidier Descouens · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“germinating seeds of Brassica napus L. (dicot) and Triticum aestivum L. (monocot)”

✓ located verbatim in the source · abstract, characters 478–559 · show in text ↑
e4

“A linear increase in the activity of CAT, CI, and MDA contents was found in both the test seeds with the increasing concentrations of CMEA and CMER”

✓ located verbatim in the source · abstract, characters 843–990 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Increasing extract concentrations gave a linear increase in CAT, CI and MDA activity or content in Triticum aestivum seeds.

Taxon
Triticum aestivumTriticum aestivume1
Treatment
increasing concentrations of CMEA and CMERe4
Outcome
activity of CAT, CI, and MDA contentse4
Direction
linear increasee4

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“germinating seeds of Brassica napus L. (dicot) and Triticum aestivum L. (monocot)”

✓ located verbatim in the source · abstract, characters 478–559 · show in text ↑
e4

“A linear increase in the activity of CAT, CI, and MDA contents was found in both the test seeds with the increasing concentrations of CMEA and CMER”

✓ located verbatim in the source · abstract, characters 843–990 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Total protein content of the germinating seeds decreased with the extracts.

Taxon
Brassica napus L. (dicot) and Triticum aestivum L. (monocot)Brassica napusTriticum aestivume1
Treatment
CMEA and CMERe4
Outcome
TPCe5
Direction
decreasede5

Not reportedComparator

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

Brassica napus
Brassica napus · TaxonDidier Descouens · CC BY-SA 4.0 · Wikimedia Commons ↗
Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“germinating seeds of Brassica napus L. (dicot) and Triticum aestivum L. (monocot)”

✓ located verbatim in the source · abstract, characters 478–559 · show in text ↑
e4

“with the increasing concentrations of CMEA and CMER”

✓ located verbatim in the source · abstract, characters 939–990 · show in text ↑
e5

“while TPC of the germinating seeds was found decreased”

✓ located verbatim in the source · abstract, characters 992–1046 · show in text ↑
Intervention effectauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

Both extracts inhibited or delayed seed germination (inferred by the authors).

Taxon
Brassica napus L. (dicot) and Triticum aestivum L. (monocot)Brassica napusTriticum aestivume1
Treatment
CMEA and CMERe6
Outcome
seed germinatione6
Direction
inhibited/delayede6

Not reportedComparator

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

Brassica napus
Brassica napus · TaxonDidier Descouens · CC BY-SA 4.0 · Wikimedia Commons ↗
Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“germinating seeds of Brassica napus L. (dicot) and Triticum aestivum L. (monocot)”

✓ located verbatim in the source · abstract, characters 478–559 · show in text ↑
e6

“It is inferred that both the CMEA and CMER inhibited/delayed the seed germination”

✓ located verbatim in the source · abstract, characters 1048–1129 · show in text ↑
Intervention effectauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

Both extracts reduced seedling growth (inferred by the authors).

Taxon
Brassica napus L. (dicot) and Triticum aestivum L. (monocot)Brassica napusTriticum aestivume1
Treatment
CMEA and CMERe6
Outcome
seedling growthe6
Direction
reducede6

Not reportedComparator

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

Brassica napus
Brassica napus · TaxonDidier Descouens · CC BY-SA 4.0 · Wikimedia Commons ↗
Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“germinating seeds of Brassica napus L. (dicot) and Triticum aestivum L. (monocot)”

✓ located verbatim in the source · abstract, characters 478–559 · show in text ↑
e6

“It is inferred that both the CMEA and CMER inhibited/delayed the seed germination, reduced the seedling growth by affecting a variety of biochemical and physiological attributes”

✓ located verbatim in the source · abstract, characters 1048–1225 · show in text ↑

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botanical · growth · Brassica napus (oilseed rape)Positive and negative results

65 papers: 22 positive, 43 negative or no effect

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botanical · growth · Triticum aestivum (wheat)Positive and negative results

435 papers: 206 positive, 229 negative or no effect

228 papers in the same direction as this paper · 206 in the opposite direction

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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.