Open AccessSequential changes in cell morphology of an obligately barophilic deep‐sea bacterium during its growth at high pressures
Author(s) -
Nakayama Akihiko,
Yano Yutaka,
Yoshida Katsuhiko
Publication year - 1996
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1996.tb08362.x
Subject(s) - deep sea , strain (injury) , phase (matter) , swell , morphology (biology) , bacteria , exponential growth , biology , oceanography , geology , chemistry , zoology , paleontology , physics , anatomy , organic chemistry , quantum mechanics
An obligately barophilic bacterium isolated from intestinal content of a deep‐sea fish ( Coryphaenoides yaquinae ), which was retrieved from a depth of 6100 m in the Northwest Pacific Ocean, swelled in the early‐exponential phase, elongated in the midexponential phase, thinned in the late‐exponential phase, and shortened in the stationary phase when incubated both at 82.7 MPa and at 41.4 MPa around the optimum growth pressure. The same changes were observed at any pressures where the strain could grow. We propose to call such morphological changes the SETS (swell‐elongate‐thin‐shorten) phenomenon. These results suggest the possibility that the SETS phenomenon might occur in the growth of the strain at high‐pressure deep‐sea environments.