DEVELOPMENTAL STAGES IN A NONHETEROCYSTOUS FILAMENTOUS CYANOPHYTE

Circadian Rhythm of Nitrogenase Gene Expression in the Diazotrophic Filamentous Nonheterocystous Cyanobacterium Trichodesmium sp. Strain IMS

Arrangement of nitrogenase structural genes in an aerobic filamentous nonheterocystous cyanobacterium.

Members of the marine filamentous, nonheterocystous cyanobacterial genus Trichodesmium not only are capable of fixing nitrogen aerobically in the light but when grown under a light-dark cycle will fix nitrogen only during the light phase. In this study, we constructed a restriction map of the structural nitrogen fixation genes (nifHDK) in Trichodesmium sp. strain NIBB 1067. We found that the or...

A Critical Review of Kohlberg’s Theory of Moral Judgment and a Guideline on its Developmental Stages

A Critical Review of Kohlberg’s Theory of Moral Judgment and a Guideline on its Developmental Stages   A.R. Assaareh, Ph.D. * A. Mahdizaadeh Tehraani** A.R. Amini Zarrin*** S. Azimi****   Developmental theories describe and explain stages in which different aspects of human psyche develop. Among such theories is Kohlberg’s theory of moral judgment wherein a complex ...

Circadian rhythm of nitrogenase gene expression in the diazotrophic filamentous nonheterocystous cyanobacterium Trichodesmium sp. strain IMS 101.

Recent studies suggested that the daily cycle of nitrogen fixation activity in the marine filamentous nonheterocystous cyanobacterium Trichodesmium sp. is controlled by a circadian rhythm. In this study, we evaluated the rhythm of nitrogen fixation in Trichodesmium sp. strain IMS 101 by using the three criteria for an endogenous rhythm. Nitrogenase transcript abundance oscillated with a period ...

ADHD Through Different Developmental Stages