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2016 ; 7
(ä): 741
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Trichoderma viride Laccase Plays a Crucial Role in Defense Mechanism against
Antagonistic Organisms
#MMPMID27242756
Divya L
; Sadasivan C
Front Microbiol
2016[]; 7
(ä): 741
PMID27242756
show ga
Fungal laccases are involved in a variety of physiological functions such as
delignification, morphogenesis, and parasitism. In addition to these functions,
we suggest that fungal laccases are involved in defense mechanisms. When the
laccase secreting Trichoderma viride was grown in the presence of a range of
microorganisms including bacteria and fungi, laccase secretion was enhanced in
response to antagonistic organisms alone. In addition, growth of antagonistic
microbes was restricted by the secreting fungi. Besides, our study for the first
time shows the inability of the secreting fungi (T. viride) to compete with
antagonistic organism when laccase activity is inhibited, further emphasizing its
involvement in rendering a survival advantage to the secreting organism. When
laccase inhibitor was added to the media, the zone of inhibition exerted by the
antagonist organism was more pronounced and consequently growth of T. viride was
significantly restricted. Based on these observations we accentuate that, laccase
plays an important role in defense mechanism and provides endurance to the
organism when encountered with an antagonistic organism in its surrounding.