Physiological and molecular responses to urea environment in Cladocopium goreaui (Symbiodiniaceae).

Nitrogen is an essential nutrient for photosynthetic productivity, and its enrichment in coral reef ecosystems due to anthropogenic activities has raised concerns about ecological impacts. Urea is a readily available nitrogen source that can influence nitrogen dynamics in coral reef ecosystems, but the underlying mechanisms of its assimilation and utilization by coral symbionts remain unclear. This study investigates the physiological and molecular responses of Cladocopium goreaui to urea and nitrate, highlighting key differences in nitrogen assimilation.

Transcriptome analysis reveals the molecular mechanism of differences in growth between photoautotrophy and heterotrophy in .

Background: The green alga can grow photoautotrophically utilizing light and CO, and heterotrophically utilizing acetate. The physiological and biochemical responses of autotrophy and heterotrophy are different in . However, there is no complete understanding of the molecular physiology between autotrophy and heterotrophy.

Diversity and ecological function of urease-producing bacteria in the cultivation environment of Gracilariopsis lemaneiformis.

Urease-producing bacteria (UPB) provide inorganic nitrogen for primary producers by hydrolyzing urea, and play an important role in marine nitrogen cycle. However, there is still an incomplete understanding of UPB and their ecological functions in the cultivation environment of the red macroalgae Gracilariopsis lemaneiformis. This study comprehensively analyzed the diversity of culturable UPB and explored their effects on urea uptake by G.

Unraveling the Diverse Profile of N-Acyl Homoserine Lactone Signals and Their Role in the Regulation of Biofilm Formation in -Associated .

N-acyl homoserine lactones (AHLs) are small, diffusible chemical signal molecules that serve as social interaction tools for bacteria, enabling them to synchronize their collective actions in a density-dependent manner through quorum sensing (QS). The QS activity from epiphytic bacteria of the red macroalgae , along with its involvement in biofilm formation and regulation, remains unexplored in prior scientific inquiries. Therefore, this study explores the AHL signal molecules produced by epiphytic bacteria.

Enhanced Carotenoid Production in by Overexpression of Endogenousand Exogenous Beta-Carotene Ketolase () Genes.

is a unicellular green alga that can grow heterotrophically by using acetate as a carbon source. Carotenoids are natural pigments with biological activity and color, which have functions such as antioxidant, anti-inflammatory, vision protection, etc., and have high commercial value and prospects.

Industry chain and challenges of microalgal food industry-a review.

Currently, the whole world is facing hunger due to the increase in the global population and the rising level of food consumption. Unfortunately, the impact of environmental, climate, and political issues on agriculture has resulted in limited global food resources. Thus, it is important to develop new food sources that are environmentally friendly and not subject to climate or space limitations.

Environmental factors shape the epiphytic bacterial communities of Gracilariopsis lemaneiformis.

Macroalgae host various symbionts on their surface, which play a critical role in their growth and development processes. However, there is still incomplete understanding of this epiphytic bacteria-host algae interactions. This study comprehensively analysed variation of the epiphytic bacterial communities (EBC) composition of red macroalga Gracilariopsis lemaneiformis at different geographic locations and environmental factors (i.

Proteome responses of Gracilaria lemaneiformis exposed to lead stress.

Proteome response of plants is an important process that enables them to cope with environmental stress including metal stress. In this study, the proteome of Gracilaria lemaneiformis exposed to lead was investigated. Two-dimensional gel electrophoresis analysis revealed 123 protein spots, among which 14 proteins were significantly differentially expressed and identified using MALDI-TOF MS.