Rodger S et al. (2004) Microb Ecol "The impact of bacterial diet on the migration and navigation of Caenorhabditis elegans."

Griffiths BS, Rodger S, Young IM, McNicol JW, Wheatley RW

[Microb Ecol, 2004]

Can diet have a significant impact on the ability of organisms to sense and locate food? Focusing on the bacterial feeder Caenorhabditis elegans, we investigated what effect preconditioning on a range of bacterial substrates had on the subsequent chemotaxis process involved in the nematode locating other bacterial populations. Remarkably, we found that C. elegans, initially fed on a diet of Escherichia coli OP50, was significantly impaired in finding E. coli OP50 populations, compared to other available bacterial populations (P < 0.001). We found similar results for another bacterial feeding nematode species, suggesting that a general "substrate legacy" may operate across a wide range of organisms. We discuss this important finding with respect to the variation in response exhibited within a given nematode population, and the impact nematode migration has on bacterial dispersal in the environment.

sulfiredoxin activity

Catalysis of the reaction: peroxiredoxin-(S-hydroxy-S-oxocysteine) + ATP + 2 R-SH = peroxiredoxin-(S-hydroxycysteine) + ADP + phosphate + R-S-S-R.

eriodictyol 3'-O-methyltransferase activity

Catalysis of the reaction: (S)-eriodictyol + S-adenosyl-L-methionine = (S)-homoeriodictyol + H+ + S-adenosyl-L-homocysteine.

(S)-coclaurine-N-methyltransferase activity

Catalysis of the reaction: S-adenosyl-L-methionine + (S)-coclaurine = S-adenosyl-L-homocysteine + (S)-N-methylcoclaurine.

obsolete glutathione oxidoreductase activity

OBSOLETE. Catalysis of the reaction: protein-S-S-glutathione + glutathione-SH = protein-SH + glutathione-S-S-glutathione.

(S)-scoulerine 9-O-methyltransferase activity

Catalysis of the reaction: (S)-scoulerine + S-adenosyl-L-methionine(1+) = (S)-tetrahydrocolumbamine + S-adenosyl-L-homocysteine + H+.

3'-hydroxy-N-methyl-(S)-coclaurine 4'-O-methyltransferase activity

Catalysis of the reaction: S-adenosyl-L-methionine + 3'-hydroxy-N-methyl-(S)-coclaurine = S-adenosyl-L-homocysteine + (S)-reticuline.

(S)-tetrahydroprotoberberine N-methyltransferase activity

Catalysis of the reaction: S-adenosyl-L-methionine + (S)-7,8,13,14-tetrahydroprotoberberine = S-adenosyl-L-homocysteine + cis-N-methyl-(S)-7,8,13,14-tetrahydroprotoberberine.

(R,S)-reticuline 7-O-methyltransferase activity

Catalysis of the reaction: (S)- or (R)-reticuline + S-adenosyl-L-methionine = (S)- or (R)-laudanine + H+ + S-adenosyl-L-homocysteine.

S-adenosyl-L-methionine:(S)-corytuberine-N-methyltransferase activity

Catalysis of the reaction: (S)-corytuberine + S-adenosyl-L-methionine = magnoflorine + S-adenosyl-L-homocysteine.