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Suppression of growth of Fusarium verticillioides Niren. using strains of Trichoderma harzianum from maize [Zea mays] plant parts and its rhizosphere

100%

Sobowale A. A., Odebode A. C., Cardwell K. F., Bandyopadhyay R.

Journal of Plant Protection Research

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2009

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tom 49

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nr 4

452-459

Three strains of Trichoderma harzianum (strain 1: IMI 380934; strain 2: IMI 380935; strain 3: IMI 380938) were compared for their ability to suppress radial growth of Fusarium verticillioides in vitro. Each Trichoderma strain was paired with the pathogen F. verticillioides on 9 cm Petri plates of acidified potato dextrose agar using three pairing methods. Varying growth suppression of pathogen by Trichoderma strains was rated and ratings were analysed using GLM Procedure of SAS. Growth inhibition of F. verticillioides by each of the T. harzianum strains was significantly different from control irrespective of pairing method (p = 0.01, R2 = 0.96). Higher inhibition of F. verticillioides was obtained by inoculating antagonist before pathogen even at p = 0.01. Mode of suppression includes mycoparasitism and competition for space and nutrients. Growth inhibition of pathogen differed significantly among (p > 0.0001) and within (p > 0.026) pairing methods. T. harzianum strain 1 had better suppression of pathogen than the other two strains when it was inoculated before the pathogen while T. harzianum strain 3 was better when pathogen and antagonist were inoculated simultaneously (p = 0.05). Different strains of T. harzianum could thus be employed as promising antagonists of F. verticillioides.

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Adrenal steroids act as inhibitory modulators of thyrofollicular cell morphology and proliferation in neonatal chicks [Gallus domesticus]

100%

Ganguli S., Bandyopadhyay R., Chakraborty S.

Folia Biologica

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2001

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tom 49

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nr 3-4

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Growth inhibition of Fusarium verticillioides [Sacc.] Nirenberg by isolates of Trichoderma pseudokoningii strains from maize plant parts and its rhizosphere

88%

Sobowale A. A., Cardwell K. F., Odebode A. C., Bandyopadhyay R., Jonathan S. G.

Journal of Plant Protection Research

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2005

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tom 45

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nr 4

249-265

Ability of five strains of Trichoderma pseudokoningii (antagonists) to suppress radial growth of Fusarium verticillioides (Sacc.) Nirenberg (=Fusarium moniliforme Sheldon) was examined i n vi tro. These were T. pseudokoningii strain1 (IMI 380933), strain2 (IMI 380937), strain3 (IMI 3809 39), strain4 (IMI 380940) and strain5 (IMI 380941). Each strain was paired with pathogen by inoculating at opposite ends of 9 cm petri plates using three pairing methods. Gradings were assigned to varied growth inhibition of pathogen by antagonists and analysed using GLM procedure (SAS). Growth suppressionof F. verticillioides by all strains of T. pseudokoningii was significantly different (R2 =0.98, p=0.05) from control in all pairing methods. It differed significantly (p>0.0003) among the strains in all pairing methods. Growth suppression also differed significantly among (p>0.0001) and within (p>0.018) pairing methods. Growth suppression was best when antagonists were inoculated before pathogen. Suppression mechanisms include mycoparasitism and competition for space and nutrients. T. pseudokoningii strains 3 and 4 had the best (p=0.05) growth suppressionof F. verticillioides and could be used as biocontrol agents for endophytic F. verticillioides in maize plant. This experiment was conducted in the search for resident microorganisms that might be capable of checking F. verticillioides withinmaize plant by competitive exclusion in subsequent experiments.

Ograniczanie wyników

2 Journal of Plant Protection Research

1 Folia Biologica

3 Bandyopadhyay R.

2 Cardwell K. F.

2 Odebode A. C.

2 Sobowale A. A.

1 Chakraborty S.

1 Ganguli S.

1 Jonathan S. G.

1 2009

1 2005

1 2001

Suppression of growth of Fusarium verticillioides Niren. using strains of Trichoderma harzianum from maize [Zea mays] plant parts and its rhizosphere

Adrenal steroids act as inhibitory modulators of thyrofollicular cell morphology and proliferation in neonatal chicks [Gallus domesticus]

Growth inhibition of Fusarium verticillioides [Sacc.] Nirenberg by isolates of Trichoderma pseudokoningii strains from maize plant parts and its rhizosphere