scholarly journals Phaeodactylum Tricornutum as a Potential Phytoremediator of Sea and Fresh Waters

2018 ◽  
Author(s):  
Stanisław Listwan ◽  
Wiktor Tokarek ◽  
Krzysztof Kleszcz ◽  
Magdalena Chowaniec ◽  
Zofia Porębska ◽  
...  
Keyword(s):  
Phaeodactylum Tricornutum ◽  
Fresh Waters

scholarly journals SPX-related genes regulate phosphorus homeostasis in the marine phytoplankton, Phaeodactylum tricornutum

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Kaidian Zhang ◽  
Zhi Zhou ◽  
Jiashun Li ◽  
Jingtian Wang ◽  
Liying Yu ◽  
...  
Keyword(s):  
Stress Responses ◽  
Phaeodactylum Tricornutum ◽  
Response Regulator ◽  
P Uptake ◽  
Negative Regulator ◽  
Marine Phytoplankton ◽  
Alkaline Phosphatases ◽  
Phosphate Starvation Response ◽  
Essential Nutrient ◽  
Global Oceans

AbstractPhosphorus (P) is an essential nutrient for marine phytoplankton. Maintaining intracellular P homeostasis against environmental P variability is critical for phytoplankton, but how they achieve this is poorly understood. Here we identify a SPX gene and investigate its role in Phaeodactylum tricornutum. SPX knockout led to significant increases in the expression of phosphate transporters, alkaline phosphatases (the P acquisition machinery) and phospholipid hydrolases (a mechanism to reduce P demand). These demonstrate that SPX is a negative regulator of both P uptake and P-stress responses. Furthermore, we show that SPX regulation of P uptake and metabolism involves a phosphate starvation response regulator (PHR) as an intermediate. Additionally, we find the SPX related genes exist and operate across the phytoplankton phylogenetic spectrum and in the global oceans, indicating its universal importance in marine phytoplankton. This study lays a foundation for better understanding phytoplankton adaptation to P variability in the future changing oceans.

scholarly journals Plastidial ACP Δ9‐desaturase modulates EPA biosynthesis and TAG accumulation in Phaeodactylum tricornutum

2021 ◽  
Author(s):  
Richard Smith ◽  
Juliette Jouhet ◽  
Chiara Gandini ◽  
Vladimir Nekrasov ◽  
Eric Marechal ◽  
...  
Keyword(s):  
Phaeodactylum Tricornutum ◽  
Δ9 Desaturase ◽  
Tag Accumulation

Characterisation of novel regulatory sequences compatible with modular assembly in the diatom Phaeodactylum tricornutum

2021 ◽  
Vol 53 ◽  
pp. 102159
Author(s):  
Matthias Windhagauer ◽  
Raffaela M. Abbriano ◽  
Justin Ashworth ◽  
Lorenzo Barolo ◽  
Ana Cristina Jaramillo-Madrid ◽  
...  
Keyword(s):  
Phaeodactylum Tricornutum ◽  
Regulatory Sequences ◽  
Modular Assembly
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