INTRASPECIFIC INTERACTIONS BETWEEN ALGAE WITH DIFFERENT NUTRITIONAL HISTORIES

0493874 - MBÚ 2019 RIV US eng J - Journal Article
Venuleo, M. - Giordano, Mario
INTRASPECIFIC INTERACTIONS BETWEEN ALGAE WITH DIFFERENT NUTRITIONAL HISTORIES.
Journal of Phycology. Roč. 54, č. 3 (2018), s. 423-427. ISSN 0022-3646. E-ISSN 1529-8817
R&D Projects: GA ČR(CZ) GA17-18917S
Institutional support: RVO:61388971
Keywords : acclimation * chemical communication * intraspecific competition
OECD category: Marine biology, freshwater biology, limnology
Impact factor: 2.831, year: 2018

The diatom Phaeodactylum tricornutum was cultured in five different growth regimes to obtain cells with different composition. Pairs of populations subjected to different treatments were then mixed in a communal culture regime that differed from those of origin. After 6h, the ratio between the two populations was verified by flow cytometry. Alterations in this ratio were found when cells previously grown at 1mM NH4+ were mixed with GeO2- and 0.5mM NH4+-grown cells. The nutritional background may thus make cells differently suited to new environmental conditions and afford advantages in terms of reproductive potential. Competitive interactions between populations may result from the differences in the expressed proteome and/or in the availability of tools for regulatory responses. This may have relevance to the persistence of phenotypically neutral variants present in the population best suited to the new condition, after the interaction of the conspecifics with different nutritional histories.
Permanent Link: http://hdl.handle.net/11104/0287160