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undergraduate thesis
Mehanizmi interakcije biljaka i gljiva u endotrofnoj mikorizi
Zagreb: University of Zagreb, Faculty of Science, 2009. urn:nbn:hr:217:727544
Martinčić, Jelena
University of Zagreb
Faculty of Science
Department of Biology

Institutional repository: Repository of the Faculty of Science

Cite this document

Martinčić, J. (2009). Mehanizmi interakcije biljaka i gljiva u endotrofnoj mikorizi (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:727544

Martinčić, Jelena. "Mehanizmi interakcije biljaka i gljiva u endotrofnoj mikorizi." Undergraduate thesis, University of Zagreb, Faculty of Science, 2009. https://urn.nsk.hr/urn:nbn:hr:217:727544

Martinčić, Jelena. "Mehanizmi interakcije biljaka i gljiva u endotrofnoj mikorizi." Undergraduate thesis, University of Zagreb, Faculty of Science, 2009. https://urn.nsk.hr/urn:nbn:hr:217:727544

Martinčić, J. (2009). 'Mehanizmi interakcije biljaka i gljiva u endotrofnoj mikorizi', Undergraduate thesis, University of Zagreb, Faculty of Science, accessed 22 November 2024, https://urn.nsk.hr/urn:nbn:hr:217:727544

Martinčić J. Mehanizmi interakcije biljaka i gljiva u endotrofnoj mikorizi [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Science; 2009 [cited 2024 November 22] Available at: https://urn.nsk.hr/urn:nbn:hr:217:727544

J. Martinčić, "Mehanizmi interakcije biljaka i gljiva u endotrofnoj mikorizi", Undergraduate thesis, University of Zagreb, Faculty of Science, Zagreb, 2009. Available at: https://urn.nsk.hr/urn:nbn:hr:217:727544

Metadata
TitleMehanizmi interakcije biljaka i gljiva u endotrofnoj mikorizi
Title (english)Plant and fungi interaction mechanisms in endotrophic mycorrhiza
AuthorJelena Martinčić
MentorMirta Tkalec (mentor)
GranterUniversity of Zagreb
Faculty of Science
(Department of Biology)
Zagreb
Defense date and country2009, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Biology
Abstract
Endotrofna mikoriza je simbioza između gljive i biljke, a pri čemu gljiva raste djelomično i unutar samog korijena biljke. U arbuskularnoj mikorizi (AM) gljive iz reda Glomeromycota tvore arbuskule unutar korijena biljke. To su razgranate hife nalik na drvo čija je zadaća prijenos hranjivih tvari između biljke i gljive. Prvenstveno je poboljšan prijenos fosfata i dušika u biljku, a ugljik nastao fotosintezom odlazi u gljivu. Tijekom evolucije, „genetički program“ AM poslužio je kao temelj i za druge simbioze koje uključuju korijen biljke pa tako dušik fiksirajuće bakterije koriste isti signalni put kao i AM. Međutim, molekularni mehanizmi koji vode do AM manje su poznati od onih koji dovode do simbioze biljke i dušik fiksirajuće bakterije pa se u zadnjih nekoliko godina endotrofna mikoriza intenzivno istražuje. Zahvaljujući tome otkriveni su strigolaktoni- signalne molekule koje otpušta biljka i koje potiču hife gljive na grananje u smjeru biljke. Otkriveni su i signali (Myc faktori) koje otpušta gljiva prije nego što kolonizira biljku, iako još nije poznat točan sastav kao ni biljni receptori za koje se vežu. Ustanovljeno je da u uspješnoj kolonizaciji korijena aktivno sudjeluje i sama biljka pripremajući intracelularni okoliš za hife gljiva stvarajući prepenetracijski aparat (PPA). Također su identificirani i bitni geni koji sudjeluju u signalnom putu (SYM): SYMRK- kinaza, CASTOR i POLLUX kationski kanali, CCaMK i CYCLOPS. Otkriveno je i da oscilacija koncentracije kalcija imaju bitnu ulogu u uspostavljanju ovog simbiotskog odnosa.
Abstract (english)
Endotrophic mycorrhiza is symbiosis between fungi and plant in which fungi grow partly in the plant root. In arbuscular mycorrhiza, fungi from the genus Glomeromycota form arbuscules inside the plant root. These are treelike hyphae which role is nutrients exchange between fungi and plant. Primarily, phosphorus and nitrogen transfer to the plant is improved and photosynthetic driven carbon is transferred to the fungi. During evolution, AM „genetic program“ was the basis for other symbioses including plant root and that's the reason why nitrogen fixing bacteria utilize the same signalling pathway. However, molecular mechanisms that lead to AM are less known than those that lead to symbiosis with nitrogen fixing bacteria, so in past few years endotrophic mycorrhiza is being intensively investigated. Due to this fact, strigolactones, plant driven signal molecules inducing hyphal branching, have been discovered. Hypha driven preinfection signals (Myc factors) are discovered too, although their identity and plant receptors are not yet being defined. The plant participates actively in successful root colonization by creating prepenetration apparatus (PPA). Also, important SYM genes involved in signalling pathway have been identified: SYMRK kinase, CASTOR and POLLUX cation channels, CCaMK and CYCLOPS. It has been discovered that oscillations in calcium concentration plays an important role in establishment of this symbiotic relationship.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:727544
Study programmeTitle: 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 resourceText
File originBorn digital
Access conditionsOpen access
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Created on2018-03-13 12:54:25