TAILIEUCHUNG - Studies on organogenesis during regeneration in the earthworm, Eudrilus eugeniae, in support of symbiotic association with Bacillus endophyticus
Organogenesis and animal adaptation upon loss of body parts are crucial events in regeneration of all traits, and both are uncovered areas in biology. The organogenesis of the mouth and anus during regeneration was studied in Eudrilus eugeniae. It was found that the earthworm regenerates a functional mouth and anus in six days. | Turkish Journal of Biology Research Article Turk J Biol (2017) 41: 113-126 © TÜBİTAK doi: Studies on organogenesis during regeneration in the earthworm, Eudrilus eugeniae, in support of symbiotic association with Bacillus endophyticus 1, 1, 1 Elaiya Raja SUBRAMANIAN *, Dinesh Kumar SUDALAIMANI *, Johnson Retnaraj Samuel SELVAN CHRISTYRAJ , 1 1 1 Kalidas RAMAMOORTHY , Nino GOPI DAISY , Jackson Durairaj SELVAN CHRISTYRAJ , 2 2 1, Kasimani RENGANATHAN , Sundar KRISHNAN , Sudhakar SIVASUBRAMANIAM ** 1 Department of Biotechnology, Manonmaniam Sundaranar University, Tirunelveli, Tamil Nadu, India 2 Department of Biotechnology, Kalasalingam University, Krishnankoil, Tamil Nadu, India Received: Accepted/Published Online: Final Version: Abstract: Organogenesis and animal adaptation upon loss of body parts are crucial events in regeneration of all traits, and both are uncovered areas in biology. The organogenesis of the mouth and anus during regeneration was studied in Eudrilus eugeniae. It was found that the earthworm regenerates a functional mouth and anus in six days. During the course of organogenesis, the earthworm adopts unique starvation behavior for 5 days, and the starvation triggers the gut microflora of E. eugeniae to produce riboflavin. One of the efficient riboflavin-producing bacteria, Bacillus endophyticus, confirmed through 16S rRNA sequencing, has been isolated from its gut. The symbiotic association provides shelter and nutrition to the bacterium and the earthworm in return gets riboflavin to maintain homeostasis during the starvation period of early regeneration. Key words: Organogenesis, Eudrilus eugeniae, riboflavin, starvation, Bacillus endophyticus 1. Introduction Regeneration is an astonishing phenomenon entailing regrowth of a detached body part. It is a genetic characteristic that is more prevalent in certain animal groups, particularly the .
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