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Which one of the following proved effective for biological control of nematodal disease in plants?
A
Gliocladium virens
B
Paecilomyces lilacinus
C
Pisolithus tinctorius
D
Pseudomonas cepacia
Detailed Solution
Biological control is the use of living organisms to control pests and pathogens.
Paecilomyces lilacinus is a soil fungus that parasitises the eggs, egg masses and females of plant-parasitic nematodes such as the root-knot nematode (Meloidogyne).
Its hyphae penetrate the nematode eggs and destroy them, so it has proved effective for the biological control of nematodal diseases in plants.
Gliocladium virens is used as a biocontrol agent against soil-borne fungal pathogens.
Pisolithus tinctorius is an ectomycorrhizal fungus that helps trees in the absorption of nutrients.
Pseudomonas cepacia is a bacterium used against some soil-borne fungal diseases.
So the organism effective against nematodal disease is Paecilomyces lilacinus.
Paecilomyces lilacinus is a soil fungus that parasitises the eggs, egg masses and females of plant-parasitic nematodes such as the root-knot nematode (Meloidogyne).
Its hyphae penetrate the nematode eggs and destroy them, so it has proved effective for the biological control of nematodal diseases in plants.
Gliocladium virens is used as a biocontrol agent against soil-borne fungal pathogens.
Pisolithus tinctorius is an ectomycorrhizal fungus that helps trees in the absorption of nutrients.
Pseudomonas cepacia is a bacterium used against some soil-borne fungal diseases.
So the organism effective against nematodal disease is Paecilomyces lilacinus.