The cyanobacterium Synechococcus sp. Pasteur culture collection 7002 was genetically engineered to synthesize biofuel-compatible medium-chain fatty acids (FAs) during photoautotrophic growth. Expression of a heterologous lauroyl-acyl carrier protein (C12:0-ACP) thioesterase with concurrent deletion of the endogenous putative acyl-ACP synthetase led to secretion of transesterifiable C12:0 FA in ...

The cell cycle of the chlorophyll b-possessing marine cyanobacterium Prochlorococcus is highly synchronized under natural conditions. To understand the underlying molecular mechanisms we cloned and sequenced dnaA and ftsZ, two key cell cycle-associated genes, and studied their expression. An axenic culture of Prochlorococcus sp. strain PCC 9511 was grown in a turbidostat with a 12 h-12 h light-...

To investigate the involvement of tubuiin gene expression in controlling cell division events in Chlamydomonas reinhardtii we have measured tubuiin mRNA levels during the cell cycle under different environmental conditions. In C. reinhardtii cells grown under the synchronizing conditions of 14 h of light followed by 10 h of darkness, mRNAs for tubuiin and associated flagellar proteins were foun...

Abstract Algae offer tremendous potential for the production of various high‐value products (HVPs). Besides light quantity and quality, factors such as temperature, medium composition, pH, aeration are important algae‐specific process parameters that influence growth behavior their chemical composition. Screenings algae HVPs ongoing, but available data cultivability suitability organisms limite...

To understand growth limitations of photosynthetic microorganisms, and to investigate whether batch or certain photosynthesis-related parameters predict a turbidostat (continuous at constant biomass concentration) rate, five green algal species were grown in photobioreactor conditions their susceptibilities photoinhibition photosystem II as well several measured. Growth rates during modes varie...

Many turbidostat models are affected by environmental noise due to various complicated and uncertain factors, Ornstein-Uhlenbeck process is a more effective precise way. We formulate stochastic system incorporating in this paper develop dynamical behavior for the model, which includes existence uniqueness of globally positive equilibrium, sufficient conditions extinction, unique stationary dist...

In the ecosystem, species need time to transform resources into energy for growth. addition, degradation period after species' mortality will lead reuse of resources. The two phenomena above contribute delay effects during evolution. We here develop a turbidostat model incorporating investigate impact resource consumption and reusing on population first analyze existence stability positive equi...