Paper · 2015 · African Journal of Microbiology Research

Effects of plant growth promoting bacterial isolates from Kavango on the vegetative growth of Sorghum bicolor

Hosea Haiyambo Daniel; Reinhold Hurek Barbara; Maruwa Chimwamurombe Percy

4
claims
5
verbatim quotes
8
citations
2
research areas
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Open access · cc-by

Abstract

Sorghum is an important cereal that is processed into a variety of foods and leisure beverages across the African continent. Low sorghum yields experienced in agriculture is a result of major production constraints such as soil nutrient deficiency and plant disease. It is important that the methods for crop production are of a sustainable nature as the chemical fertilizers in current use are detrimental to the natural environment. The aim of this study was to determine the effects of plant growth promoting (PGP) bacteria on growth of Sorghum bicolor. PGP bacteria isolated from the rhizosphere of Pennisetum glaucum (Pseudomonas stutzeri ACM2-32, Kosakonia cloacae FCM2-50, Bacillus subtilis ASM1-59 and Bacillus amyloliquefaciens LSM1-61) and S. bicolor (Stenotrophomonas maltophilia LCS2-11) plants in Kavango (Namibia), were used as peat-based inoculants to evaluate their effects on the growth of S. bicolor. The combination treatment T9 (B. amyloliquefaciens LSM1-61: K. cloacae FCM2-50: P. stutzeri ACM2-32) significantly (p = 0.032) enhanced the biomass of S. bicolor as compared to the water control. Single inoculants consisting of S. maltophilia LCS2-11, K. cloacae FCM2-50 and B. amyloliquefaciens LSM1-61 and combination inoculants T7, T8 and T9, enhanced S. bicolor root biomass as much as a commercial fertilizer control. These results indicate that the plant growth promoting bacteria induced a beneficial effect on growth of sorghum seedlings. The future work involves testing these promising inoculants on growth of these sorghum plants to maturity stage to determine effects on seed yield over three seasons in multi-location trials. Key words: Rhizosphere bacteria, peat based inoculants, plant growth promoting bacteria, Sorghum bicolor.

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Claims 4

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Combination treatment T9 of B. amyloliquefaciens LSM1-61, K. cloacae FCM2-50 and P. stutzeri ACM2-32 significantly (p = 0.032) enhanced S. bicolor biomass compared with the water control.

Taxon
S. bicolorSorghum bicolore1
Treatment
combination treatment T9 (B. amyloliquefaciens LSM1-61: K. cloacae FCM2-50: P. stutzeri ACM2-32)e1
Interactor
B. amyloliquefaciens LSM1-61Bacillus amyloliquefaciense1symbiont
Second interactor
K. cloacae FCM2-50e1symbiont
Outcome
biomasse1
Direction
enhancede1
Qualifier
p = 0.032e1
Comparator
water controle1

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

Sorghum bicolor
Sorghum bicolor · TaxonNo machine-readable author provided. Pethan assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗
Bacillus amyloliquefaciens
Bacillus amyloliquefaciens · InteractorAgricultural Research Service (NRRL)Culture Collection · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Effects of plant growth promoting bacterial isolates from Kavango on the vegetative growth of Sorghum bicolor”

✓ located verbatim in the source · title, characters 0–109 · show in text ↑
e1

“The combination treatment T9 (B. amyloliquefaciens LSM1-61: K. cloacae FCM2-50: P. stutzeri ACM2-32) significantly (p = 0.032) enhanced the biomass of S. bicolor as compared to the water control.”

✓ located verbatim in the source · abstract, characters 919–1114 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combination inoculants T7, T8 and T9 enhanced S. bicolor root biomass as much as a commercial fertilizer control.

Taxon
S. bicolorSorghum bicolore1
Treatment
combination inoculants T7, T8 and T9e1
Outcome
root biomasse1
Direction
enhancede1
Qualifier
as much ase1
Comparator
commercial fertilizer controle1

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

Sorghum bicolor
Sorghum bicolor · TaxonNo machine-readable author provided. Pethan assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“Single inoculants consisting of S. maltophilia LCS2-11, K. cloacae FCM2-50 and B. amyloliquefaciens LSM1-61 and combination inoculants T7, T8 and T9, enhanced S. bicolor root biomass as much as a commercial fertilizer control.”

✓ located verbatim in the source · abstract, characters 1115–1341 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Single inoculants of S. maltophilia LCS2-11, K. cloacae FCM2-50 and B. amyloliquefaciens LSM1-61 enhanced S. bicolor root biomass as much as a commercial fertilizer control.

Taxon
S. bicolorSorghum bicolore1
Treatment
Single inoculants consisting of S. maltophilia LCS2-11, K. cloacae FCM2-50 and B. amyloliquefaciens LSM1-61e1
Interactor
S. maltophilia LCS2-11Stenotrophomonas maltophiliae1symbiont
Second interactor
K. cloacae FCM2-50e1symbiont
Outcome
root biomasse1
Direction
enhancede1
Qualifier
as much ase1
Comparator
commercial fertilizer controle1

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

Sorghum bicolor
Sorghum bicolor · TaxonNo machine-readable author provided. Pethan assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗
Stenotrophomonas maltophilia
Stenotrophomonas maltophilia · InteractorRiraq25 · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“Single inoculants consisting of S. maltophilia LCS2-11, K. cloacae FCM2-50 and B. amyloliquefaciens LSM1-61 and combination inoculants T7, T8 and T9, enhanced S. bicolor root biomass as much as a commercial fertilizer control.”

✓ located verbatim in the source · abstract, characters 1115–1341 · show in text ↑
Intervention effectauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

Plant growth promoting bacteria induced a beneficial effect on growth of sorghum seedlings.

Taxon
sorghumSorghume1
Organ / stage
seedlingse1
Treatment
plant growth promoting bacteriae1
Interactor
plant growth promoting bacteriae1symbiont
Outcome
growthe1
Direction
beneficial effecte1

Not reportedComparator

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

Sorghum
Sorghum · Taxon · picture of the genus (one of its species)Evelyn Simak · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e1

“These results indicate that the plant growth promoting bacteria induced a beneficial effect on growth of sorghum seedlings.”

✓ located verbatim in the source · abstract, characters 1342–1465 · show in text ↑

inoculation · growth · SorghumPositive and negative results

76 papers: 65 positive, 11 negative or no effect

64 papers in the same direction as this paper · 9 in the opposite direction · 2 reporting no difference from an alternative

  1. positive
  2. negative
  3. negative

72 papers more in this group

See all 76 papers →

inoculation · growth · Sorghum bicolor (sorghum)Results agree

25 papers: 25 positive, 0 negative or no effect

24 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

21 papers more in this group

See all 25 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.