Random- Mutagenesis in Photosynthetic Microorganisms Further Selected with Respect to Increased Lipid Content

Development of a Dunaliella tertiolecta Strain with Increased Zeaxanthin Content Using Random Mutagenesis

Zeaxanthin is a xanthophyll pigment that is regarded as one of the best carotenoids for the prevention and treatment of degenerative diseases. In the worldwide natural products market, consumers prefer pigments that have been produced from biological sources. In this study, a Dunaliella tertiolecta strain that has 10-15% higher cellular zeaxanthin content than the parent strain (zea1), was obta...

Increased lipid productivity and TAG content in Nannochloropsis by heavy-ion irradiation mutagenesis.

One mutant (HP-1) with higher growth rate was obtained from Nannochloropsis oceanica IMET1 by heavy-ion irradiation mutagenesis. Compared to the wild type, the biomass accumulation and maximum growth rate of HP-1 were individually increased by 19% and 6%, and its lipid productivity was increased by 28% from 211 to 271 mg L(-1) d(-1). Subsequently analysis indicated photosynthetic efficiency of ...

a comparison of teachers and supervisors, with respect to teacher efficacy and reflection

supervisors play an undeniable role in training teachers, before starting their professional experience by preparing them, at the initial years of their teaching by checking their work within the proper framework, and later on during their teaching by assessing their progress. but surprisingly, exploring their attributes, professional demands, and qualifications has remained a neglected theme i...

Photosynthetic Microorganisms and Valuable Products

Photoregulated carotenoid biosynthesis in non-photosynthetic microorganisms.

Photoregulated carotenoid biosynthesis consists of an initiating photoactivation which bestows carotenogenic competence upon photochromogenic microorganisms. Subsequent carotenoid biosynthesis is light independent but requires microbial growth. Experimental systems have been developed for several photochromogcnic microorganisms to separate the primary photoact from the following carotenogenic r...