prikaz prve stranice dokumenta Fotosinteza i respiracija male vodene leće (Lemna minor L.) u uvjetima povišenog saliniteta
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undergraduate thesis
Fotosinteza i respiracija male vodene leće (Lemna minor L.) u uvjetima povišenog saliniteta
2022. urn:nbn:hr:181:180595
Kuzman, Martina
Josip Juraj Strossmayer University of Osijek
Department of biology

Cite this document

Kuzman, M. (2022). Fotosinteza i respiracija male vodene leće (Lemna minor L.) u uvjetima povišenog saliniteta (Undergraduate thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of biology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:181:180595

Kuzman, Martina. "Fotosinteza i respiracija male vodene leće (Lemna minor L.) u uvjetima povišenog saliniteta." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of biology, 2022. https://urn.nsk.hr/urn:nbn:hr:181:180595

Kuzman, Martina. "Fotosinteza i respiracija male vodene leće (Lemna minor L.) u uvjetima povišenog saliniteta." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of biology, 2022. https://urn.nsk.hr/urn:nbn:hr:181:180595

Kuzman, M. (2022). 'Fotosinteza i respiracija male vodene leće (Lemna minor L.) u uvjetima povišenog saliniteta', Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of biology, accessed 12 November 2024, https://urn.nsk.hr/urn:nbn:hr:181:180595

Kuzman M. Fotosinteza i respiracija male vodene leće (Lemna minor L.) u uvjetima povišenog saliniteta [Undergraduate thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of biology; 2022 [cited 2024 November 12] Available at: https://urn.nsk.hr/urn:nbn:hr:181:180595

M. Kuzman, "Fotosinteza i respiracija male vodene leće (Lemna minor L.) u uvjetima povišenog saliniteta", Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of biology, Osijek, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:181:180595

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Metadata
TitleFotosinteza i respiracija male vodene leće (Lemna minor L.) u uvjetima povišenog saliniteta
Title (english)Photosynthesis and respiration of common duckweed (Lemna minor L.) in conditions of increased salinity
AuthorMartina Kuzman
MentorJasenka Antunović Dunić (mentor)
MentorVesna Peršić (komentor)
Committee memberJasenka Antunović Dunić (predsjednik povjerenstva)
GranterJosip Juraj Strossmayer University of Osijek
Department of biology
Osijek
Defense date and country2022-09-13, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Biology
Abstract
Fotosinteza i respiracija čine dva povezana međuovisna procesa koji su podložni promjenama uzrokovanim abiotičkim ili biotičkim čimbenicima. Modificirana Clarkova elektroda korištena je za mjerenje stope fotosinteze i respiracije male vodene leće, L. minor L., izložene povišenom salinitetu. Osim utjecaja povišenog saliniteta (50, 100 i 150 mM NaCl), ispitivan je i utjecaj egzogenog citokinina 6-benzilaminopurina (1 M) na promjene u brzini respiracije i fotosinteze. Povišenje saliniteta dovodi do značajnog smanjenja maksimalne stope fotosinteze, ali i do značajnog povećanja stope respiracije L. minor. Egzogeno dodan citokininski fitohormonom 6-benzilaminopurin uzrokovao je smanjenu stopu fotosinteze te asimilacijsku sposobnost male vodene leće, ali ne i njezinu kompetitivnu prednost, budući da je svjetlosna kompenzacijska točka ostala nepromijenjena. Kombinacija fitohormona i 150 mM NaCl-a uzrokovala je povećanje maksimalne stope fotosinteze, a time i asimilacijske sposobnosti biljaka tretiranih 6-benzilaminopurinom. S druge strane, egzogeno dodani 6-benzilaminopurin u kombinaciji s povišenim salinitetom doveo je do značajnog smanjenja stope respiracije, što ukazuje na njegovu ulogu u umanjenju učinka solnog stresa.
Abstract (english)
Photosynthesis and respiration are two interdependent processes susceptible to changes caused by abiotic or biotic factors. A modified Clark electrode was used to measure the rate of photosynthesis and respiration of the common duckweed, L. minor L., exposed to increased salinity. In addition to increased salinity (50, 100, and 150 mM NaCl), the effect of exogenous cytokinin 6-benzylaminopurine (1 μM) on changes in the rate of respiration and photosynthesis was also investigated. An increase in salinity has led to a significant decrease in the maximum rate of photosynthesis and a considerable increase in the respiration rate of L. minor. Phytohormone 6-benzylaminopurine has caused a reduced rate of photosynthesis and thus the assimilation ability of the common duckweed, but not its competitive advantage, since the light compensation point remained unchanged. Salt stress induced by 150 mM NaCl in combination with phytohormone caused an increase in the maximum rate of photosynthesis and thus the assimilation ability of plants treated with 6- benzylaminopurine. On the other hand, exogenously added 6-benzylaminopurine in combination with increased salinity led to a significant reduction in respiration rate, indicating its role in reducing the effect of salt stress.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:181:180595
Study programmeTitle: Undergraduate University Study Programme in Biology (Bachelor of Science)
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) biologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) biologije)
Type of resourceText
File originBorn digital
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Created on2022-11-02 11:58:04