Paper · 2010 · Brazilian Journal of Microbiology

Phosphate solubilization potential and phosphatase activity of rhizospheric Trichoderma spp.

Anil Kapri; Lakshmi Tewari

6
claims
16
verbatim quotes
156
citations
3
research areas
✓
Open access · cc-by-nc

Abstract

Trichoderma sp., a well known biological control agent against several phytopathogens, was tested for its phosphate (P) solubilizing potential. Fourteen strains of Trichoderma sp. were isolated from the forest tree rhizospheres of pinus, deodar, bamboo, guava and oak on Trichoderma selective medium. The isolates were tested for their in-vitro P-solubilizing potential using National Botanical Research Institute Phosphate (NBRIP) broth containing tricalcium phosphate (TCP) as the sole P source, and compared with a standard culture of T. harzianum. All the cultures were found to solubilize TCP but with varying potential. The isolate DRT-1 showed maximum amount of soluble phosphate (404.07 µg.ml-1), followed by the standard culture of T. harzianum (386.42 µg.ml-1) after 96 h of incubation at 30+1(0)C. Extra-cellular acid and alkaline phosphatases of the fungus were induced only in the presence of insoluble phosphorus source (TCP). High extra-cellular alkaline phosphatase activity was recorded for the isolate DRT-1 (14.50 U.ml-1) followed by the standard culture (13.41 U.ml-1) at 72h. The cultures showed much lesser acid phosphatase activities. Under glasshouse conditions, Trichoderma sp. inoculation increased chickpea (Cicer arietinum) growth parameters including shoot length, root length, fresh and dry weight of shoot as well as roots, in P-deficient soil containing only bound phosphate (TCP). Shoot weight was increased by 23% and 33% by inoculation with the isolate DRT-1 in the soil amended with 100 and 200 mg TCP kg-1 soil, respectively, after 60 d of sowing. The study explores high P-solubilizing potential of Trichoderma sp., which can be exploited for the solubilization of fixed phosphates present in the soil, thereby enhancing soil fertility and plant growth.

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Claims 6

Observationobservedoriginal resultmeasured

Claim · model-written summary

All tested Trichoderma cultures solubilized TCP with varying potential.

Taxon
chickpea (Cicer arietinum)Cicer arietinume1
Interactor
Trichoderma sp.Trichodermae2symbiont
Outcome
solubilize TCPe0

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 ↗
Trichoderma
Trichoderma · Interactor · picture of the genus (one of its species)US Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, [1] · Public domain · Wikimedia Commons ↗

Verbatim

e0

“All the cultures were found to solubilize TCP but with varying potential.”

✓ located verbatim in the source · abstract, characters 552–625 · show in text ↑
e1

“Trichoderma sp. inoculation increased chickpea (Cicer arietinum) growth parameters”

✓ located verbatim in the source · abstract, characters 1187–1269 · show in text ↑
e2

“Trichoderma sp., a well known biological control agent against several phytopathogens”

✓ located verbatim in the source · abstract, characters 0–85 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

DRT-1 yielded the maximum soluble phosphate after 96 hours.

Taxon
chickpea (Cicer arietinum)Cicer arietinume1
Material
DRT-1e0
Interactor
Trichoderma sp.Trichodermae2symbiont
Outcome
soluble phosphatee0
Direction
maximume0
Value
404.07 µg.ml-1e0

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 ↗
Trichoderma
Trichoderma · Interactor · picture of the genus (one of its species)US Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, [1] · Public domain · Wikimedia Commons ↗

Verbatim

e0

“The isolate DRT-1 showed maximum amount of soluble phosphate (404.07 µg.ml-1), followed by the standard culture of T. harzianum (386.42 µg.ml-1) after 96 h of incubation at 30+1(0)C.”

✓ located verbatim in the source · abstract, characters 626–808 · show in text ↑
e1

“Trichoderma sp. inoculation increased chickpea (Cicer arietinum) growth parameters”

✓ located verbatim in the source · abstract, characters 1187–1269 · show in text ↑
e2

“Trichoderma sp., a well known biological control agent against several phytopathogens”

✓ located verbatim in the source · abstract, characters 0–85 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Insoluble TCP induced fungal extracellular acid and alkaline phosphatases.

Taxon
chickpea (Cicer arietinum)Cicer arietinume1
Treatment
insoluble phosphorus source (TCP)e0
Interactor
Trichoderma sp.Trichodermae2symbiont
Outcome
Extra-cellular acid and alkaline phosphatasese0

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 ↗
Trichoderma
Trichoderma · Interactor · picture of the genus (one of its species)US Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, [1] · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Extra-cellular acid and alkaline phosphatases of the fungus were induced only in the presence of insoluble phosphorus source (TCP).”

✓ located verbatim in the source · abstract, characters 809–940 · show in text ↑
e1

“Trichoderma sp. inoculation increased chickpea (Cicer arietinum) growth parameters”

✓ located verbatim in the source · abstract, characters 1187–1269 · show in text ↑
e2

“Trichoderma sp., a well known biological control agent against several phytopathogens”

✓ located verbatim in the source · abstract, characters 0–85 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

DRT-1 showed high extracellular alkaline phosphatase activity.

Taxon
chickpea (Cicer arietinum)Cicer arietinume1
Material
DRT-1e0
Interactor
Trichoderma sp.Trichodermae2symbiont
Outcome
extra-cellular alkaline phosphatase activitye0
Direction
Highe0
Value
14.50 U.ml-1e0

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 ↗
Trichoderma
Trichoderma · Interactor · picture of the genus (one of its species)US Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, [1] · Public domain · Wikimedia Commons ↗

Verbatim

e0

“High extra-cellular alkaline phosphatase activity was recorded for the isolate DRT-1 (14.50 U.ml-1) followed by the standard culture (13.41 U.ml-1) at 72h.”

✓ located verbatim in the source · abstract, characters 941–1096 · show in text ↑
e1

“Trichoderma sp. inoculation increased chickpea (Cicer arietinum) growth parameters”

✓ located verbatim in the source · abstract, characters 1187–1269 · show in text ↑
e2

“Trichoderma sp., a well known biological control agent against several phytopathogens”

✓ located verbatim in the source · abstract, characters 0–85 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Trichoderma inoculation increased chickpea shoot and root growth and biomass.

Taxon
chickpea (Cicer arietinum)Cicer arietinume0
Treatment
Trichoderma sp. inoculatione0
Interactor
Trichoderma sp.Trichodermae0symbiont
Outcome
shoot length, root length, fresh and dry weight of shoot as well as rootse0
Direction
increasede0
Setting
glasshouse conditionse0

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 ↗
Trichoderma
Trichoderma · Interactor · picture of the genus (one of its species)US Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, [1] · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Under glasshouse conditions, Trichoderma sp. inoculation increased chickpea (Cicer arietinum) growth parameters including shoot length, root length, fresh and dry weight of shoot as well as roots, in P-deficient soil containing only bound phosphate (TCP).”

✓ located verbatim in the source · abstract, characters 1158–1413 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

DRT-1 inoculation increased shoot weight by 23% with 100 mg TCP.

Taxon
chickpea (Cicer arietinum)Cicer arietinume1
Treatment
inoculation with the isolate DRT-1e0
Interactor
Trichoderma sp.Trichodermae2symbiont
Outcome
Shoot weighte0
Direction
increasede0
Value
23%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 ↗
Trichoderma
Trichoderma · Interactor · picture of the genus (one of its species)US Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, [1] · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Shoot weight was increased by 23% and 33% by inoculation with the isolate DRT-1 in the soil amended with 100 and 200 mg TCP kg-1 soil, respectively, after 60 d of sowing.”

✓ located verbatim in the source · abstract, characters 1414–1584 · show in text ↑
e1

“Trichoderma sp. inoculation increased chickpea (Cicer arietinum) growth parameters”

✓ located verbatim in the source · abstract, characters 1187–1269 · show in text ↑
e2

“Trichoderma sp., a well known biological control agent against several phytopathogens”

✓ located verbatim in the source · abstract, characters 0–85 · show in text ↑

Trichoderma · growth · Cicer arietinum (chickpea)Positive and negative results

14 papers: 13 positive, 1 negative or no effect

12 papers in the same direction as this paper · 1 in the opposite direction

  1. negative
  2. positive
  3. positive

10 papers more in this group

See all 14 papers →

inoculation · growth · Cicer arietinum (chickpea)Positive and negative results

152 papers: 135 positive, 17 negative or no effect

134 papers in the same direction as this paper · 16 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. negative
  3. no effect

148 papers more in this group

See all 152 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.