Paper · 2021 · Malaysian Journal of Microbiology

Effectiveness of indigenous fluorescent pseudomonads in suppressing Rhizoctonia solani root rot disease and promoting plant growth in chilli seedlings

Chuen, N. L.; Muda, R.-H.; Ahmad, K.

10
claims
14
verbatim quotes
2
citations
2
research areas
✓
Open access · cc-by-nc

Abstract

Aims: This study aimed to isolate and evaluate the indigenous fluorescent Pseudomonas spp. with bio-control potential against Rhizoctonia solani and promoting growth in chilli seedlings. Methodology: A total of 120 fluorescent bacterial were isolated from the healthy chilli rhizosphere soil from the seven major chilli cultivation localities in Terengganu, Malaysia. Only 115 Gram negative fluorescent isolates were further invitro screened for antagonistic activities against R. solani and plant growth-promoting properties. The 50 most effective fluorescent Pseudomonads antagonist against R. solani with minimum percentage inhibition of radial growth (PIRG) of 65% were selected. Hierarchical cluster analysis was further conducted with two dendrograms derived from SPSS Statistic 20 to facilitate the comparison between these 50 isolates for antagonistic and growth-promoting properties. A total of 40 fluorescent isolates within the most potential cluster were further selected and identified using 16S rRNA sequencing. Thirty four fluorescent isolates were identified as Pseudomonas spp. and six isolates as Burkholderia spp. The top 13 ranked fluorescent Pseudomonas spp. from the scoring index were evaluated for seed germination and vigor index in chilli seedlings. There was no significant difference in germination rate between fluorescent Pseudomonas inoculated with control. However, vigor index of chilli seeds pre-inoculated with fluorescent P. putida (B5C1), P. aeruginosa (B3C56) and P. putida (B5C7) were significantly increased with 4684.9, 4657.3 and 4401.0 over control (P 0.05). Conclusion, significance and impact of study: These selected fluorescent isolates: P. putida (B5C1), P. aeruginosa (B3C56) and P. putida (B5C7) have the potential to be developed as biofungicide against R. solani and as growthpromoter in chilli production system.

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Claims 10

Observationobservedoriginal resultmeasured

Claim · model-written summary

Fifty fluorescent pseudomonad isolates inhibited R. solani radial growth by at least 65% in vitro.

Taxon
chilli seedlingst0
Interactor
R. solaniRhizoctonia solanie0pathogen
Second interactor
fluorescent PseudomonadsPseudomonas fluorescens groupe0biocontrol_agent
Outcome
percentage inhibition of radial growth (PIRG)e0
Value
65%e0

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

Rhizoctonia solani
Rhizoctonia solani · Interactoranonimowy, niektóre prawa zastrzeżone (CC BY) · CC BY 4.0 · iNaturalist ↗

Verbatim

e0

“The 50 most effective fluorescent Pseudomonads antagonist against R. solani with minimum percentage inhibition of radial growth (PIRG) of 65% were selected.”

✓ located verbatim in the source · abstract, characters 527–683 · show in text ↑
t0

“chilli seedlings”

✓ located verbatim in the source · title, characters 134–150 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Thirty four selected isolates were identified as Pseudomonas spp..

Taxon
chilli seedlingst0
Interactor
Pseudomonas spp.Pseudomonase0biocontrol_agent
Outcome
fluorescent isolatese0
Value
Thirty foure0

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

Pseudomonas
Pseudomonas · Interactor · picture of the genus (one of its species)CDC · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Thirty four fluorescent isolates were identified as Pseudomonas spp. and six isolates as Burkholderia spp.”

✓ located verbatim in the source · abstract, characters 1026–1132 · show in text ↑
t0

“chilli seedlings”

✓ located verbatim in the source · title, characters 134–150 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

six selected isolates were identified as Burkholderia spp..

Taxon
chilli seedlingst0
Interactor
Burkholderia spp.Burkholderiae0biocontrol_agent
Outcome
fluorescent isolatese0
Value
sixe0

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

Burkholderia
Burkholderia · Interactor · picture from its Wikimedia Commons categoryMelww at English Wikipedia · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Thirty four fluorescent isolates were identified as Pseudomonas spp. and six isolates as Burkholderia spp.”

✓ located verbatim in the source · abstract, characters 1026–1132 · show in text ↑
t0

“chilli seedlings”

✓ located verbatim in the source · title, characters 134–150 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Pseudomonas inoculation did not significantly change chilli germination rate.

Taxon
chillit0
Treatment
fluorescent Pseudomonas inoculatede0
Interactor
fluorescent Pseudomonase0symbiont
Outcome
germination ratee0
Direction
no significant differencee0
Comparator
controle0

Verbatim

e0

“There was no significant difference in germination rate between fluorescent Pseudomonas inoculated with control.”

✓ located verbatim in the source · abstract, characters 1276–1388 · show in text ↑
t0

“chilli seedlings”

✓ located verbatim in the source · title, characters 134–150 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

P. putida (B5C1) significantly increased chilli seed vigor index to 4684.9 versus control.

Taxon
chillie0
Treatment
pre-inoculated with fluorescent P. putida (B5C1)e0
Interactor
P. putida (B5C1)Pseudomonas putidae0symbiont
Outcome
vigor indexe0
Direction
increasede0
Value
4684.9e0
Comparator
controle0

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

Pseudomonas putida
Pseudomonas putida · InteractorMroghair · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“vigor index of chilli seeds pre-inoculated with fluorescent P. putida (B5C1), P. aeruginosa (B3C56) and P. putida (B5C7) were significantly increased with 4684.9, 4657.3 and 4401.0 over control (P 0.05).”

✓ located verbatim in the source · abstract, characters 1398–1601 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

P. aeruginosa (B3C56) significantly increased chilli seed vigor index to 4657.3 versus control.

Taxon
chillie0
Treatment
P. aeruginosa (B3C56)e0
Interactor
P. aeruginosa (B3C56)Pseudomonas aeruginosae0symbiont
Outcome
vigor indexe0
Direction
increasede0
Value
4657.3e0
Comparator
controle0

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

Pseudomonas aeruginosa
Pseudomonas aeruginosa · InteractorCDC · Public domain · Wikimedia Commons ↗

Verbatim

e0

“vigor index of chilli seeds pre-inoculated with fluorescent P. putida (B5C1), P. aeruginosa (B3C56) and P. putida (B5C7) were significantly increased with 4684.9, 4657.3 and 4401.0 over control (P 0.05).”

✓ located verbatim in the source · abstract, characters 1398–1601 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

P. putida (B5C7) significantly increased chilli seed vigor index to 4401.0 versus control.

Taxon
chillie0
Treatment
P. putida (B5C7)e0
Interactor
P. putida (B5C7)Pseudomonas putidae0symbiont
Outcome
vigor indexe0
Direction
increasede0
Value
4401.0e0
Comparator
controle0

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

Pseudomonas putida
Pseudomonas putida · InteractorMroghair · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“vigor index of chilli seeds pre-inoculated with fluorescent P. putida (B5C1), P. aeruginosa (B3C56) and P. putida (B5C7) were significantly increased with 4684.9, 4657.3 and 4401.0 over control (P 0.05).”

✓ located verbatim in the source · abstract, characters 1398–1601 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors propose P. putida (B5C1) for biofungicide and growth promotion in chilli.

Taxon
chillie0
Interactor
R. solaniRhizoctonia solanie0pathogen
Second interactor
P. putida (B5C1)Pseudomonas putidae0biocontrol_agent
Outcome
biofungicide against R. solani and as growthpromotere0

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

Rhizoctonia solani
Rhizoctonia solani · Interactoranonimowy, niektóre prawa zastrzeżone (CC BY) · CC BY 4.0 · iNaturalist ↗
Pseudomonas putida
Pseudomonas putida · Second interactorMroghair · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“These selected fluorescent isolates: P. putida (B5C1), P. aeruginosa (B3C56) and P. putida (B5C7) have the potential to be developed as biofungicide against R. solani and as growthpromoter in chilli production system.”

✓ located verbatim in the source · abstract, characters 1648–1865 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors propose P. aeruginosa (B3C56) for biofungicide and growth promotion in chilli.

Taxon
chillie0
Interactor
R. solaniRhizoctonia solanie0pathogen
Second interactor
P. aeruginosa (B3C56)Pseudomonas aeruginosae0biocontrol_agent
Outcome
biofungicide against R. solani and as growthpromotere0

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

Rhizoctonia solani
Rhizoctonia solani · Interactoranonimowy, niektóre prawa zastrzeżone (CC BY) · CC BY 4.0 · iNaturalist ↗
Pseudomonas aeruginosa
Pseudomonas aeruginosa · Second interactorCDC · Public domain · Wikimedia Commons ↗

Verbatim

e0

“These selected fluorescent isolates: P. putida (B5C1), P. aeruginosa (B3C56) and P. putida (B5C7) have the potential to be developed as biofungicide against R. solani and as growthpromoter in chilli production system.”

✓ located verbatim in the source · abstract, characters 1648–1865 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors propose P. putida (B5C7) for biofungicide and growth promotion in chilli.

Taxon
chillie0
Interactor
R. solaniRhizoctonia solanie0pathogen
Second interactor
P. putida (B5C7)Pseudomonas putidae0biocontrol_agent
Outcome
biofungicide against R. solani and as growthpromotere0

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

Rhizoctonia solani
Rhizoctonia solani · Interactoranonimowy, niektóre prawa zastrzeżone (CC BY) · CC BY 4.0 · iNaturalist ↗
Pseudomonas putida
Pseudomonas putida · Second interactorMroghair · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“These selected fluorescent isolates: P. putida (B5C1), P. aeruginosa (B3C56) and P. putida (B5C7) have the potential to be developed as biofungicide against R. solani and as growthpromoter in chilli production system.”

✓ located verbatim in the source · abstract, characters 1648–1865 · show in text ↑

Pseudomonas aeruginosa · growth · Capsicum (peppers)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 →

inoculation · growth · Capsicum (peppers)Positive and negative results

56 papers: 48 positive, 8 negative or no effect

7 papers in the same direction as this paper · 48 in the opposite direction

  1. positive
  2. positive
  3. positive

52 papers more in this group

See all 56 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.