Paper · 2023 · Physiological and Molecular Plant Pathology

Thermotolerant and halotolerant Streptomyces sp. isolated from Ajuga parviflora having biocontrol activity against Pseudomonas syringae and Xanthomonas campestris acts as a sustainable bioadditive in growth promotion of Cicer arietinum

Rahul Thakur; Saurabh Yadav

11
claims
21
verbatim quotes
28
citations
4
research areas
✓
Open access · cc-by-nc-nd

Abstract

Beneficial rhizobacteria are important determinants of plant health and productivity. They influence nutrient uptake , stress tolerance , disease resistance , biodiversity etc. We have isolated bacterial isolate Streptomyces sp. (AB-11) from rhizospheric soil of an important medicinal plant Ajuga parviflora , displaying growth promoting attributes like production of siderophores , indole acetic acid , phosphate solubilization , calcite solubilization , nitrogen fixation etc. In-vitro plate assay of AB-11 displayed heat stress tolerance up to 45 °C and salt stress tolerance up to 0.9 M NaCl. The culture filtrate of bacterial isolate AB-11 showed antagonistic activity against two different plant pathogens Pseudomonas syringae pv. tomato and Xanthomonas campestris with inhibition zones 26 ± 1 mm and 21 ± 1 mm respectively. Due to increase in world's population by 2050, sustainable agricultural practices as envisaged in United Nations (UN) Sustainable Development Goals (SDGs) are being focused nowdays, thus the role of AB-11 supplementation both by primary inoculation (1°) using seed biopriming and subsequent secondary inoculation (2°) (supplementation in plants) in chickpea plants was investigated. Bioinoculation led to increase in root length (25.52%), fresh weight (37.10%), relative water content (10.94%) and total chlorophyll content (37.28%). Development of shoot and root system was also prominent due to multiple branching in shoots and roots and appearance of numerous root hairs was also observed. This is the first study related to Streptomyces sp. from A. parviflora which suggests that Streptomyces sp. (AB-11) can be considered as a sustainable bioadditive.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. 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 11

Observationobservedoriginal resultmeasured

Claim · model-written summary

The isolate produced siderophores and indole acetic acid and solubilized phosphate.

Taxon
Ajuga parvifloraAjuga parviflorae0
Interactor
Streptomyces sp. (AB-11)Streptomyces sp.e0symbiont
Outcome
production of siderophores , indole acetic acid , phosphate solubilizatione0

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

Streptomyces sp.
Streptomyces sp. · Interactor · picture of its genus (no picture of exactly this name)Public domain · Wikimedia Commons ↗

Verbatim

e0

“Streptomyces sp. (AB-11) from rhizospheric soil of an important medicinal plant Ajuga parviflora , displaying growth promoting attributes like production of siderophores , indole acetic acid , phosphate solubilization , calcite solubilization , nitrogen fixation”

✓ located verbatim in the source · abstract, characters 212–474 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

AB-11 tolerated heat to 45 °C.

Taxon
Ajuga parvifloraAjuga parviflorat0
Interactor
Streptomyces sp.Streptomyces sp.t0symbiont
Outcome
AB-11 displayed heat stress tolerancee0
Value
45 °Ce0

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

Streptomyces sp.
Streptomyces sp. · Interactor · picture of its genus (no picture of exactly this name)Public domain · Wikimedia Commons ↗

Verbatim

e0

“AB-11 displayed heat stress tolerance up to 45 °C and salt stress tolerance up to 0.9 M NaCl”

✓ located verbatim in the source · abstract, characters 504–596 · show in text ↑
t0

“Streptomyces sp. isolated from Ajuga parviflora”

✓ located verbatim in the source · title, characters 32–79 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

AB-11 tolerated salt to 0.9 M NaCl.

Taxon
Ajuga parvifloraAjuga parviflorat0
Interactor
Streptomyces sp.Streptomyces sp.t0symbiont
Outcome
salt stress tolerancee0
Value
0.9 M NaCle0

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

Streptomyces sp.
Streptomyces sp. · Interactor · picture of its genus (no picture of exactly this name)Public domain · Wikimedia Commons ↗

Verbatim

e0

“AB-11 displayed heat stress tolerance up to 45 °C and salt stress tolerance up to 0.9 M NaCl”

✓ located verbatim in the source · abstract, characters 504–596 · show in text ↑
t0

“Streptomyces sp. isolated from Ajuga parviflora”

✓ located verbatim in the source · title, characters 32–79 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The filtrate inhibited Pseudomonas syringae with a 26 ± 1 mm zone.

Taxon
Cicer arietinumCicer arietinumt0
Interactor
Pseudomonas syringae pv. tomatoPseudomonas syringae pv. tomatoe0pathogen
Second interactor
AB-11e0biocontrol_agent
Outcome
inhibition zonese0
Value
26 ± 1 mme0

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

Cicer arietinum
Cicer arietinum · TaxonSanjay Acharya · CC BY-SA 3.0 · Wikimedia Commons ↗
Pseudomonas syringae pv. tomato
Pseudomonas syringae pv. tomato · InteractorHoward F. Schwartz · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“The culture filtrate of bacterial isolate AB-11 showed antagonistic activity against two different plant pathogens Pseudomonas syringae pv. tomato and Xanthomonas campestris with inhibition zones 26 ± 1 mm and 21 ± 1 mm respectively”

✓ located verbatim in the source · abstract, characters 598–830 · show in text ↑
t0

“Cicer arietinum”

✓ located verbatim in the source · title, characters 220–235 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The filtrate inhibited Xanthomonas campestris with a 21 ± 1 mm zone.

Taxon
Cicer arietinumCicer arietinumt0
Interactor
Xanthomonas campestrisXanthomonas campestrise0pathogen
Second interactor
AB-11e0biocontrol_agent
Outcome
inhibition zonese0
Value
21 ± 1 mme0

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

Cicer arietinum
Cicer arietinum · TaxonSanjay Acharya · CC BY-SA 3.0 · Wikimedia Commons ↗
Xanthomonas campestris
Xanthomonas campestris · InteractorScot Nelson · CC0 · Wikimedia Commons ↗

Verbatim

e0

“The culture filtrate of bacterial isolate AB-11 showed antagonistic activity against two different plant pathogens Pseudomonas syringae pv. tomato and Xanthomonas campestris with inhibition zones 26 ± 1 mm and 21 ± 1 mm respectively”

✓ located verbatim in the source · abstract, characters 598–830 · show in text ↑
t0

“Cicer arietinum”

✓ located verbatim in the source · title, characters 220–235 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Bioinoculation increased chickpea root length by 25.52%.

Taxon
Cicer arietinumCicer arietinumt0
Treatment
Bioinoculatione0
Interactor
Streptomyces sp.Streptomyces sp.t0symbiont
Outcome
root lengthe0
Direction
increasee0
Value
25.52%e0

Not reportedComparator

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

Cicer arietinum
Cicer arietinum · TaxonSanjay Acharya · CC BY-SA 3.0 · Wikimedia Commons ↗
Streptomyces sp.
Streptomyces sp. · Interactor · picture of its genus (no picture of exactly this name)Public domain · Wikimedia Commons ↗

Verbatim

e0

“Bioinoculation led to increase in root length (25.52%), fresh weight (37.10%), relative water content (10.94%) and total chlorophyll content (37.28%)”

✓ located verbatim in the source · abstract, characters 1215–1364 · show in text ↑
t0

“Streptomyces sp. isolated from Ajuga parviflora having biocontrol activity against Pseudomonas syringae and Xanthomonas campestris acts as a sustainable bioadditive in growth promotion of Cicer arietinum”

✓ located verbatim in the source · title, characters 32–235 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Bioinoculation increased fresh weight by 37.10%.

Taxon
Cicer arietinumCicer arietinumt0
Treatment
Bioinoculatione0
Interactor
Streptomyces sp.Streptomyces sp.t0symbiont
Outcome
fresh weighte0
Direction
increasee0
Value
37.10%e0

Not reportedComparator

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

Cicer arietinum
Cicer arietinum · TaxonSanjay Acharya · CC BY-SA 3.0 · Wikimedia Commons ↗
Streptomyces sp.
Streptomyces sp. · Interactor · picture of its genus (no picture of exactly this name)Public domain · Wikimedia Commons ↗

Verbatim

e0

“Bioinoculation led to increase in root length (25.52%), fresh weight (37.10%), relative water content (10.94%) and total chlorophyll content (37.28%)”

✓ located verbatim in the source · abstract, characters 1215–1364 · show in text ↑
t0

“Streptomyces sp. isolated from Ajuga parviflora having biocontrol activity against Pseudomonas syringae and Xanthomonas campestris acts as a sustainable bioadditive in growth promotion of Cicer arietinum”

✓ located verbatim in the source · title, characters 32–235 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Bioinoculation increased relative water content by 10.94%.

Taxon
Cicer arietinumCicer arietinumt0
Treatment
Bioinoculatione0
Interactor
Streptomyces sp.Streptomyces sp.t0symbiont
Outcome
relative water contente0
Direction
increasee0
Value
10.94%e0

Not reportedComparator

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

Cicer arietinum
Cicer arietinum · TaxonSanjay Acharya · CC BY-SA 3.0 · Wikimedia Commons ↗
Streptomyces sp.
Streptomyces sp. · Interactor · picture of its genus (no picture of exactly this name)Public domain · Wikimedia Commons ↗

Verbatim

e0

“Bioinoculation led to increase in root length (25.52%), fresh weight (37.10%), relative water content (10.94%) and total chlorophyll content (37.28%)”

✓ located verbatim in the source · abstract, characters 1215–1364 · show in text ↑
t0

“Streptomyces sp. isolated from Ajuga parviflora having biocontrol activity against Pseudomonas syringae and Xanthomonas campestris acts as a sustainable bioadditive in growth promotion of Cicer arietinum”

✓ located verbatim in the source · title, characters 32–235 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Bioinoculation increased chlorophyll content by 37.28%.

Taxon
Cicer arietinumCicer arietinumt0
Treatment
Bioinoculatione0
Interactor
Streptomyces sp.Streptomyces sp.t0symbiont
Outcome
total chlorophyll contente0
Direction
increasee0
Value
37.28%e0

Not reportedComparator

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

Cicer arietinum
Cicer arietinum · TaxonSanjay Acharya · CC BY-SA 3.0 · Wikimedia Commons ↗
Streptomyces sp.
Streptomyces sp. · Interactor · picture of its genus (no picture of exactly this name)Public domain · Wikimedia Commons ↗

Verbatim

e0

“Bioinoculation led to increase in root length (25.52%), fresh weight (37.10%), relative water content (10.94%) and total chlorophyll content (37.28%)”

✓ located verbatim in the source · abstract, characters 1215–1364 · show in text ↑
t0

“Streptomyces sp. isolated from Ajuga parviflora having biocontrol activity against Pseudomonas syringae and Xanthomonas campestris acts as a sustainable bioadditive in growth promotion of Cicer arietinum”

✓ located verbatim in the source · title, characters 32–235 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Inoculated chickpea developed more shoot and root branching and numerous root hairs.

Taxon
Cicer arietinumCicer arietinumt0
Treatment
Streptomyces sp.t0
Interactor
Streptomyces sp.Streptomyces sp.t0symbiont
Outcome
multiple branching in shoots and roots and appearance of numerous root hairse0

Not reportedComparatorDirection

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

Cicer arietinum
Cicer arietinum · TaxonSanjay Acharya · CC BY-SA 3.0 · Wikimedia Commons ↗
Streptomyces sp.
Streptomyces sp. · Interactor · picture of its genus (no picture of exactly this name)Public domain · Wikimedia Commons ↗

Verbatim

e0

“Development of shoot and root system was also prominent due to multiple branching in shoots and roots and appearance of numerous root hairs was also observed”

✓ located verbatim in the source · abstract, characters 1366–1523 · show in text ↑
t0

“Streptomyces sp. isolated from Ajuga parviflora having biocontrol activity against Pseudomonas syringae and Xanthomonas campestris acts as a sustainable bioadditive in growth promotion of Cicer arietinum”

✓ located verbatim in the source · title, characters 32–235 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors suggest AB-11 as a sustainable bioadditive.

Taxon
Cicer arietinumCicer arietinumt0
Interactor
Streptomyces sp. (AB-11)Streptomyces sp.e0symbiont
Outcome
sustainable bioadditivee0

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

Cicer arietinum
Cicer arietinum · TaxonSanjay Acharya · CC BY-SA 3.0 · Wikimedia Commons ↗
Streptomyces sp.
Streptomyces sp. · Interactor · picture of its genus (no picture of exactly this name)Public domain · Wikimedia Commons ↗

Verbatim

e0

“Streptomyces sp. (AB-11) can be considered as a sustainable bioadditive”

✓ located verbatim in the source · abstract, characters 1616–1687 · show in text ↑
t0

“Cicer arietinum”

✓ located verbatim in the source · title, characters 220–235 · show in text ↑

Streptomyces · growth · Cicer arietinum (chickpea)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 →

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.