Abstract
The nuclear apparatus of Hyphomicrobium sp. strain B-522 is examined by various microscopy and radiolabeling techniques to determine its behavior during the reproductive cycle of these bacteria. The young, swarmer cell contains a single nucleoid comprised of a deoxyribonucleic acid (DNA) molecule with a molecular weight of 3.1 x 10(9). After development of the swarmer into a mature mother cell with a hypha and bud, the nucleoid replicates and separates into two daughter nucleoids during the initial stages of bud formation. After further development of the bud, one of the daughter nucleoids in the mother cell is rapidly transferred through the hypha to the bud. Half of the old DNA strands pass to each consecutive generation of daughter cells, but only 43% of the stable ribonucleic acid is transferred. The role which the hypha plays in the developmental cycle of these bacteria is discussed, and a mechanism for nuclear transfer is proposed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
