Biokemijski odgovor lista na stres suše kod tradicijskih kultivara krumpira

undergraduate thesis

• Title (english): Biochemical response of leaf to drought stress in traditional cultivars of potato
• Author: Lorena Rovišan
• Mentor: Ivanka Habuš Jerčić (mentor)
• Committee member: Ivanka Habuš Jerčić (predsjednik povjerenstva)
• Committee member: Snježana Kereša (član povjerenstva)
• Committee member: Marina Brčić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Plant Breeding Genetics, Biometrics and Experimentation); Zagreb
• Defense date and country: 2024-09-06, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Suša negativno utječe na biljke mijenjajući morfološke, fiziološke i metaboličke procese. Biljke izložene suši smanjuju relativni sadržaj vode u lišću, što utječe na stabilnost membrane i fotosintetske aktivnosti, a posljedično se povećava sinteza reaktivnih kisikovih vrsta (ROS), peroksidacija lipida i oštećenje membrane. Kako bi smanjile utjecaj suše biljke nakupljaju topive šećere, prolin te povećavaju enzimsku antioksidativnu aktivnost. Cilj ovog istraživanja je utvrditi utjecaj suše na sadržaj vodikovog peroksida, fotosintetskih pigmenata, prolina, malondialdehida te aktivnost antioksidacijskih enzima u listu pet tradicijskih kultivara krumpira. Stres suše značajno je utjecao na povećanje aktivnosti antioksidacijskih enzima te povećanje sadržaja prolina, vodikovog peroksida, malondialdehida te fotosintetskih pigmenata u listovima analiziranih kultivara krumpira.

Abstract (english)

Drought negatively affects plants by changing morphological, physiological and metabolic processes. Plants exposed to drought reduce the relative water content in leaves, which affects membrane stability and photosynthetic activity, and consequently increases the synthesis of reactive oxygen species (ROS), lipid peroxidation and membrane damage. In order to reduce the impact of drought, plants accumulate soluble sugars, proline and increase enzymatic antioxidant activity. The aim of this research was to determine the effect of drought on the content of hydrogen peroxide, photosynthetic pigments, proline, malondialdehyde and the activity of antioxidant enzymes in the leaves of five traditional potato cultivars. Drought stress significantly increased the activity of antioxidant enzymes and increased the content of proline, hydrogen peroxide, malondialdehyde and photosynthetic pigments in potato leaves of tested cultivars.

• Keywords: suša; krumpir; antioksidacijski enzimi; biljni pigmenti
• Keywords (english): drought; stress; antioxidant enzymes; photosynthetic pigments
• Language: croatian
• URN:NBN: urn:nbn:hr:204:669466
• Study programme: Title: Plant Sciences; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka biljnih znanosti (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka biljnih znanosti)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-11-27 08:20:08