Abstract
BACKGROUND: Early blight (EB), caused by Alternaria solani, is one of the alarming diseases that restrict tomato production globally. Existing cultural practices and fungicide applications are not enough to control early blight diseases. Therefore, the study aimed to isolate, identify, and characterize an endophytic Streptomyces exhibiting the potential to control early blight in tomato and also promote plant growth. RESULTS: From a Citrus jambhiri leaf, an endophytic Streptomyces sp. with antagonistic activity against Alternaria solani, Colletotrichum acutatum, Cladosporium herbarum, Alternaria brassicicola, Alternaria sp., Fusarium oxysporum and Fusarium sp. was isolated. It was identified as a Streptomyces sp. through 16S ribosomal DNA sequence analysis and designated as SP5. It also produced indole acetic acid which was confirmed by Salkowski reagent assay, TLC and HPLC analysis. Treatment of pathogen infected plants with Streptomyces sp. SP5 antagonists (culture cells/culture supernatant/solvent extract/ acetone precipitates) decreased the early blight disease incidence and significantly increased the various agronomic traits. CONCLUSION: The present study concluded that Streptomyces sp. SP5 possessed antifungal activity against different fungal phytopathogens and had significant potential to control early blight disease and promote plant growth.
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 4
Claim · model-written summary
An endophytic Streptomyces isolate from Citrus jambhiri inhibited Alternaria solani.
- Taxon
- Citrus jambhiri
.jpg?width=60)
Citrus jambhirie0 - Interactor
- Streptomyces sp.
Streptomyces sp.e0biocontrol_agent - Second interactor
- Alternaria solani
Alternaria solanie0pathogen - Outcome
- antagonistic activity against Alternaria solanie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“From a Citrus jambhiri leaf, an endophytic Streptomyces sp. with antagonistic activity against Alternaria solani”
Claim · model-written summary
Streptomyces SP5 produced indole acetic acid.
- Taxon
- Solanum lycopersicum
Solanum lycopersicumt0 - Interactor
- Streptomyces SP. SP5t0biocontrol_agent
- Outcome
- produced indole acetic acide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It also produced indole acetic acid which was confirmed by Salkowski reagent assay, TLC and HPLC analysis”
t0“Streptomyces SP. SP5 against early blight in Solanum lycopersicum seedlings”
Claim · model-written summary
Streptomyces SP5 treatment reduced tomato early blight incidence.
- Taxon
- Solanum lycopersicumSolanum lycopersicumt0
- Treatment
- Treatment of pathogen infected plants with Streptomyces sp. SP5 antagonists (culture cells/culture supernatant/solvent extract/ acetone precipitates)e0
- Interactor
- Alternaria solaniAlternaria solanie1pathogent0
- Second interactor
- Streptomyces sp. SP5e0biocontrol_agent
- Outcome
- early blight disease incidencee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment of pathogen infected plants with Streptomyces sp. SP5 antagonists (culture cells/culture supernatant/solvent extract/ acetone precipitates) decreased the early blight disease incidence”
t0“Streptomyces SP. SP5 against early blight in Solanum lycopersicum seedlings”
e1“caused by Alternaria solani”
Claim · model-written summary
Streptomyces SP5 treatment significantly improved agronomic traits of infected tomato plants.
- Taxon
- Solanum lycopersicumSolanum lycopersicumt0
- Treatment
- Treatment of pathogen infected plants with Streptomyces sp. SP5 antagonists (culture cells/culture supernatant/solvent extract/ acetone precipitates)e0
- Interactor
- Alternaria solaniAlternaria solanie1pathogent0
- Second interactor
- Streptomyces sp. SP5e0biocontrol_agent
- Outcome
- various agronomic traitse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment of pathogen infected plants with Streptomyces sp. SP5 antagonists (culture cells/culture supernatant/solvent extract/ acetone precipitates) decreased the early blight disease incidence and significantly increased the various agronomic traits”
t0“Streptomyces SP. SP5 against early blight in Solanum lycopersicum seedlings”
e1“caused by Alternaria solani”
The same questions in other papers
Streptomyces · Alternaria solani · Solanum lycopersicum (tomato)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
infection · Alternaria solani · Solanum lycopersicum (tomato)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
botanical · Alternaria solani · Solanum lycopersicum (tomato)Positive and negative results
26 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
24 papers more in this group
See all 28 papers →biocontrol · Alternaria solani · Solanum lycopersicum (tomato)Results agree
7 papers in the same direction as this paper
- positive
- positive
- positive
4 papers more in this group
See all 8 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.