Miksotrofija algi

undergraduate thesis

• Title (english): Mixotrophy in algae
• Author: Ana Janović
• Mentor: Marija Gligora Udovič (mentor)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2018, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Alge su genetski i fiziološki raznolika skupina s vrlo različitim prehrambenim strategijama. Povijesna podjela na autotrofe i heterotrofe ne može se primijeniti na veliki broj vrsta te je mogućnost miksotrofije kao načina ishrane dugo bila zanemarivana. Miksotrofija predstavlja kombinaciju autotrofnog (najčešće fotosintetskog) i heterotrofnog načina ishrane. Ovisno o načinu dobivanja ugljika, ali i ostalih bitnih minerala poput dušika, fosfora i željeza te vitamina, u živom je svijetu prisutan čitav spektar različitih načina ishrane koji uključuje i miksotrofiju. Tako je moguće razlikovati: 1) primarno fototrofne vrste sposobne za heterotrofan način ishrane, 2) primarno fagotrofne vrste, 3) obligatne miksotrofne vrste te mnoge slučajeve koji predstavljaju kombinaciju ta tri navedena. Miksotrofija je prisutna kod mnogobrojnih vrsta cijanobakterija, Chrysophyta, Haptophyta, Dinophyta i Chlorophyta. Neke od miksotrofnih vrsta važne su jer uzrokuju pojavu cvjetanja mora ili su zbog svoje brojnosti i/ili biomase bitan čimbenik u globalnom kruženju ugljika i ostalih elemenata. U radu su prezentirane skupine algi s različitim oblicima miksotrofije, kao i metode korištene u izučavanju ovog fenomena.

Abstract (english)

Algae are genetically and physiologically heterogenous group with different nutritional strategies. Historical division on autotrophic and heterotrophic organisms can not be applied to a huge number of species, while the contribution of mixotrophy often went unrecognised. Mixotrophy entails the ability to conduct both autotrophic (mostly photosynthetic) and heterotrophic lifestyle. A wide nutritional spectrum exists considering the accumulation of carbon, but also of other important minerals such as nitrogen, phosphorus, iron and vitamins. Specifically, organisms can be divided into: 1) primary phototrophs with additional heterotrophic ability, 2) primary phagotrophs. and 3) obligate mixotrophs demanding both light and prey, with many other cases in-between the three aforementioned. Mixotrophy exists among numerous species of cyanobacteria, Chrysophyta, Haptophyta, Dinophyta and Chlorophyta. Some of these species are important because of their role in forming toxic algal blooms, while others have a significant contribution in the global cycling of carbon and other elements. This review presents various groups of algae with different levels of mixotrophy, as well as methods used for studying this phenomenon.

• Keywords: miksotrofija; alge
• Keywords (english): mixotrophy; algae
• Language: croatian
• URN:NBN: urn:nbn:hr:217:148253
• Study programme: Title: Molecular Biology; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) molekularne biologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) molekularne biologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2018-10-02 07:12:19