Paper · 2026 · Plant Science Today

Synergistic use of biochar, Trichoderma harzianum and Pseudomonas fluorescens to combat biotic stress by Phomopsis vexans in brinjal

M S Manthur; K Adesh; K Sunil; et al.

7
claims
16
verbatim quotes
0
citations
3
research areas
✓
Open access · cc-by

Abstract

The present study focuses on induced systemic resistance (ISR), where secondary metabolites and pathogenesis-related (PR) proteins are activated after the application of resistance inducers following the salicylic acid pathway. Biochar was used as an inducer to activate phenolic compounds and pathogenesis-related (PR) proteins, helping to combat Phomopsis vexans, which causes Phomopsis blight in brinjal. Physical and biochemical analysis showed biochar has significantly improved the yield of traits of the plant and reduced the amount of infection by increasing levels of total proteins, total phenols and sugar content. Increased levels of proteins and phenolic compounds with decreased levels of disease severity as shown by regression analysis, indicating a negative correlation (r) between soil pH, soil electrical conductivity (EC), plant height, number of branches, fruit yield, peroxidase activity, total protein content, total phenols and disease severity. The treatment T13 with 3 % biochar, Trichoderma harzianum and Pseudomonas fluorescens was found to be the best treatment that exhibited positive effects on yield attributing traits and managed disease severity (22.2 %), followed by biochar concentrations of 3.5 % (T6) and 3 % (T5) alone with disease severities of 24.42 % and 26.6 %, respectively. Mixed application of biochar, T. harzianum and P. fluorescens has shown a synergistic effect on yield attributing traits and contributed to improving final yield and reducing disease severity. The data indicated a negative correlation between disease severity and yield attributing parameters, underscoring the effectiveness of this integrated approach in promoting plant resilience and productivity.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Biochar at 3% combined with Trichoderma harzianum and Pseudomonas fluorescens was the best treatment and managed Phomopsis blight severity at 22.2%.

Treatment
3 % biochar, Trichoderma harzianum and Pseudomonas fluorescense1
Interactor
Phomopsis vexansDiaporthe vexanse0pathogen
Second interactor
Trichoderma harzianumTrichoderma harzianume1biocontrol_agent
Outcome
disease severitye1
Direction
managede1
Value
22.2 %e1
Comparator
biochar concentrations of 3.5 % (T6) and 3 % (T5) alonee2

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

Solanum melongena
Solanum melongena · TaxonBeraDigle · CC BY-SA 4.0 · Wikimedia Commons ↗
Trichoderma harzianum
Trichoderma harzianum · Second interactorUS Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, [1] · Public domain · Wikimedia Commons ↗

Verbatim

e0

“helping to combat Phomopsis vexans, which causes Phomopsis blight in brinjal”

✓ located verbatim in the source · abstract, characters 330–406 · show in text ↑
e1

“The treatment T13 with 3 % biochar, Trichoderma harzianum and Pseudomonas fluorescens was found to be the best treatment that exhibited positive effects on yield attributing traits and managed disease severity (22.2 %)”

✓ located verbatim in the source · abstract, characters 970–1188 · show in text ↑
e2

“biochar concentrations of 3.5 % (T6) and 3 % (T5) alone with disease severities of 24.42 % and 26.6 %”

✓ located verbatim in the source · abstract, characters 1202–1303 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Biochar at 3.5% (T6) alone gave Phomopsis blight disease severity of 24.42%.

Treatment
biochar concentrations of 3.5 % (T6)e2
Interactor
Phomopsis vexansDiaporthe vexanse0pathogen
Outcome
disease severitiese2
Direction
decreaseinferrede2
Value
24.42 %e2

Not reportedComparator

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

Solanum melongena
Solanum melongena · TaxonBeraDigle · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“helping to combat Phomopsis vexans, which causes Phomopsis blight in brinjal”

✓ located verbatim in the source · abstract, characters 330–406 · show in text ↑
e2

“biochar concentrations of 3.5 % (T6) and 3 % (T5) alone with disease severities of 24.42 % and 26.6 %”

✓ located verbatim in the source · abstract, characters 1202–1303 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Biochar at 3% (T5) alone gave Phomopsis blight disease severity of 26.6%.

Treatment
3 % (T5) alonee2
Interactor
Phomopsis vexansDiaporthe vexanse0pathogen
Outcome
disease severitiese2
Direction
decreaseinferrede2
Value
26.6 %e2

Not reportedComparator

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

Solanum melongena
Solanum melongena · TaxonBeraDigle · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“helping to combat Phomopsis vexans, which causes Phomopsis blight in brinjal”

✓ located verbatim in the source · abstract, characters 330–406 · show in text ↑
e2

“biochar concentrations of 3.5 % (T6) and 3 % (T5) alone with disease severities of 24.42 % and 26.6 %”

✓ located verbatim in the source · abstract, characters 1202–1303 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mixed application of biochar, Trichoderma harzianum and Pseudomonas fluorescens had a synergistic effect that increased yield-attributing traits in brinjal.

Treatment
Mixed application of biochar, T. harzianum and P. fluorescense3
Outcome
yield attributing traitse3
Direction
improvinge3

Not reportedComparator

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

Solanum melongena
Solanum melongena · TaxonBeraDigle · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“helping to combat Phomopsis vexans, which causes Phomopsis blight in brinjal”

✓ located verbatim in the source · abstract, characters 330–406 · show in text ↑
e3

“Mixed application of biochar, T. harzianum and P. fluorescens has shown a synergistic effect on yield attributing traits and contributed to improving final yield and reducing disease severity”

✓ located verbatim in the source · abstract, characters 1319–1510 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Disease severity and yield-attributing parameters of brinjal show a negative correlation.

Interactor
Phomopsis vexansDiaporthe vexanse0pathogen
Outcome
disease severity and yield attributing parameterse4
Direction
negative correlatione4

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

Solanum melongena
Solanum melongena · TaxonBeraDigle · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“helping to combat Phomopsis vexans, which causes Phomopsis blight in brinjal”

✓ located verbatim in the source · abstract, characters 330–406 · show in text ↑
e4

“The data indicated a negative correlation between disease severity and yield attributing parameters”

✓ located verbatim in the source · abstract, characters 1512–1611 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Biochar significantly improved yield traits of brinjal.

Treatment
biochare5
Outcome
yield of traits of the plante5
Direction
improvede5

Not reportedComparator

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

Solanum melongena
Solanum melongena · TaxonBeraDigle · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“helping to combat Phomopsis vexans, which causes Phomopsis blight in brinjal”

✓ located verbatim in the source · abstract, characters 330–406 · show in text ↑
e5

“Physical and biochemical analysis showed biochar has significantly improved the yield of traits of the plant”

✓ located verbatim in the source · abstract, characters 408–516 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Biochar increased total protein, total phenol and sugar content in brinjal.

Treatment
biochare5
Outcome
total proteins, total phenols and sugar contente6
Direction
increasinge6

Not reportedComparator

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

Solanum melongena
Solanum melongena · TaxonBeraDigle · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“helping to combat Phomopsis vexans, which causes Phomopsis blight in brinjal”

✓ located verbatim in the source · abstract, characters 330–406 · show in text ↑
e5

“Physical and biochemical analysis showed biochar has significantly improved the yield of traits of the plant”

✓ located verbatim in the source · abstract, characters 408–516 · show in text ↑
e6

“reduced the amount of infection by increasing levels of total proteins, total phenols and sugar content”

✓ located verbatim in the source · abstract, characters 521–624 · show in text ↑

Pseudomonas fluorescens · Diaporthe vexans · Solanum melongena (eggplant)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

Pseudomonas fluorescens · yield · Solanum melongena (eggplant)Results agree

7 papers: 7 positive, 0 negative or no effect

6 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

3 papers more in this group

See all 7 papers →

Trichoderma harzianum · yield · Solanum melongena (eggplant)Results agree

12 papers: 12 positive, 0 negative or no effect

11 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

8 papers more in this group

See all 12 papers →

biochar · Diaporthe vexans · Solanum melongena (eggplant)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

biochar · yield · Solanum melongena (eggplant)Results agree

9 papers: 9 positive, 0 negative or no effect

8 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

5 papers more in this group

See all 9 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.