G-quadruplexes have long been perceived as rare and physiologically unimportant nucleic acid structures. However, several studies have revealed their importance in molecular processes, suggesting their possible role in replication and gene expression regulation. Pathways involving G-quadruplexes are intensively studied, especially in the context of human diseases, while their involvement in gene expression regulation in plants remains largely unexplored. Here, we conducted a bioinformatic study and performed a complex circular dichroism measurement to identify a stable G-quadruplex in the gene RPB1, coding for the RNA polymerase II large subunit. We found that this G-quadruplex-forming locus is highly evolutionarily conserved amongst plants sensu lato (Archaeplastida) that share a common ancestor more than one billion years old. Finally, we discussed a new hypothesis regarding G-quadruplexes interacting with UV light in plants to potentially form an additional layer of the regulatory network.

• Klíčová slova
• UV light, circular dichroism, evolution, nucleic acids, plant science,
• MeSH
• Arabidopsis chemie   genetika   účinky záření   MeSH
• cirkulární dichroismus MeSH
• fylogeneze MeSH
• G-kvadruplexy * účinky záření   MeSH
• Glaucophyta chemie   genetika   účinky záření   MeSH
• molekulární evoluce MeSH
• regulace genové exprese u rostlin genetika   MeSH
• Rhodophyta chemie   genetika   účinky záření   MeSH
• RNA-polymerasa II chemie   genetika   MeSH
• rostlinné proteiny chemie   genetika   účinky záření   MeSH
• rostliny chemie   genetika   účinky záření   MeSH
• sekvence aminokyselin MeSH
• sekvenční seřazení MeSH
• ultrafialové záření MeSH
• výpočetní biologie MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• RNA-polymerasa II MeSH
• rostlinné proteiny MeSH

Algae frequently get a bad press. Pond slime is a problem in garden pools, algal blooms can produce toxins that incapacitate or kill animals and humans and even the term seaweed is pejorative - a weed being a plant growing in what humans consider to be the wrong place. Positive aspects of algae are generally less newsworthy - they are the basis of marine food webs, supporting fisheries and charismatic marine megafauna from albatrosses to whales, as well as consuming carbon dioxide and producing oxygen. Here we consider what algae are, their diversity in terms of evolutionary origin, size, shape and life cycles, and their role in the natural environment and in human affairs.

• MeSH
• Apicomplexa genetika   fyziologie   MeSH
• biodiverzita * MeSH
• Chlorophyta klasifikace   genetika   fyziologie   MeSH
• Cryptophyta genetika   fyziologie   MeSH
• Dinoflagellata genetika   fyziologie   MeSH
• Eukaryota klasifikace   genetika   fyziologie   MeSH
• Glaucophyta klasifikace   genetika   fyziologie   MeSH
• Haptophyta genetika   fyziologie   MeSH
• Heterokontophyta genetika   fyziologie   MeSH
• parožnatky genetika   fyziologie   MeSH
• Rhizaria genetika   fyziologie   MeSH
• Rhodophyta klasifikace   genetika   fyziologie   MeSH
• rozmnožování fyziologie   MeSH
• sinice klasifikace   genetika   fyziologie   MeSH
• symbióza fyziologie   MeSH
• Publikační typ
• časopisecké články MeSH