Paralysis of nematodes: shifts in the transcriptome of the nematode-trapping fungus Monacrosporium haptotylum during infection of Caenorhabditis elegans

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Paralysis of nematodes: shifts in the transcriptome of the nematode-trapping fungus Monacrosporium haptotylum during infection of Caenorhabditis elegans. / Fekete, Csaba; Tholander, Margareta; Rajashekar, Balaji; Ahrén, Dag; Friman, Eva; Johansson, Tomas; Tunlid, Anders.

In: Environmental Microbiology, Vol. 10, No. 2, 2008, p. 364-375.

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T1 - Paralysis of nematodes: shifts in the transcriptome of the nematode-trapping fungus Monacrosporium haptotylum during infection of Caenorhabditis elegans

AU - Fekete, Csaba

AU - Tholander, Margareta

AU - Rajashekar, Balaji

AU - Ahrén, Dag

AU - Friman, Eva

AU - Johansson, Tomas

AU - Tunlid, Anders

PY - 2008

Y1 - 2008

N2 - The transcriptional response in the parasitic fungus Monacrosporium haptotylum and its nematode host Caenorhabditis elegans were analyzed during infection using cDNA microarrays. The array contained 2,684 fungal and 372 worm gene reporters. Dramatic shifts occurred in the transcriptome of M. haptotylum during the different stages of the infection. An initial transcriptional response was recorded after 1h of infection when the traps adhered to the cuticle, but before immobilization of the captured nematodes. Among the differentially expressed genes were two serine proteases (spr1 and spr2), and several homologues to genes known to be regulated in other pathogenic fungi. After 4 hours, when approximately 40 % of the nematodes were paralyzed, we identified an up-regulated cluster of 372 fungal genes which were not regulated during the other phases of the infection. This cohort contained a large proportion (79%) of genes that appear to be specific for M. haptotylum and closely related species. These genes were of two different classes; those translating into presumably functional peptides and those with no apparent protein coding potential (noncoding RNAs). Among the infection-induced C. elegans genes were those encoding antimicrobial peptides, protease inhibitors and lectins.

AB - The transcriptional response in the parasitic fungus Monacrosporium haptotylum and its nematode host Caenorhabditis elegans were analyzed during infection using cDNA microarrays. The array contained 2,684 fungal and 372 worm gene reporters. Dramatic shifts occurred in the transcriptome of M. haptotylum during the different stages of the infection. An initial transcriptional response was recorded after 1h of infection when the traps adhered to the cuticle, but before immobilization of the captured nematodes. Among the differentially expressed genes were two serine proteases (spr1 and spr2), and several homologues to genes known to be regulated in other pathogenic fungi. After 4 hours, when approximately 40 % of the nematodes were paralyzed, we identified an up-regulated cluster of 372 fungal genes which were not regulated during the other phases of the infection. This cohort contained a large proportion (79%) of genes that appear to be specific for M. haptotylum and closely related species. These genes were of two different classes; those translating into presumably functional peptides and those with no apparent protein coding potential (noncoding RNAs). Among the infection-induced C. elegans genes were those encoding antimicrobial peptides, protease inhibitors and lectins.

U2 - 10.1111/j.1462-2920.2007.01457.x

DO - 10.1111/j.1462-2920.2007.01457.x

M3 - Article

VL - 10

SP - 364

EP - 375

JO - Environmental Microbiology

T2 - Environmental Microbiology

JF - Environmental Microbiology

SN - 1462-2920

IS - 2

ER -