Odgovor biljaka na stres uzrokovan hladnoćom

undergraduate thesis

• Title (english): Response of Plants to Cold Stress
• Author: Andrej Bujak
• Mentor: Željka Vidaković-Cifrek (mentor)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2023-07-20, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Niske temperature usporavaju rast i razvoj biljaka, a smrzavanje dovodi do mehaničkih oštećenja
što može uzrokovati i smrt stanica. Hladnoća nepovoljno djeluje na biokemijske i fiziološke
procese u biljnim stanicama, uključujući fotosintezu. Dovodi do brojnih promjena na razini
ekspresije gena, biosinteze proteina te metabolizma. Odgovor je biljnih stanica na hladnoću složen
jer obuhvaća različite mehanizme. Procesi aklimatizacije i deaklimatizacije osiguravaju
preživljavanje hladnih uvjeta te rast i razvoj biljaka. Jedan od čimbenika koji uvjetuje sposobnost
odgovora na hladnoću jest starost biljke. Ovaj rad obuhvaća opis staničnih promjena nastalih
izlaganjem biljaka hladnoći te staničnoga odgovora biljaka na hladnoću, uključujući procese
aklimatizacije i deaklimatizacije. Ukratko su opisani stratifikacija i vernalizacija, razvojni procesi
u biljkama koji su ovisni o utjecaju hladnoće.

Abstract (english)

Low temperatures affect plant growth and development, while freezing causes mechanical damage
and leads to cell death. Cold adversely affects biochemical and physiological processes in plant
cells, including photosynthesis. It causes various changes related to gene expression, protein
biosynthesis, and metabolism. Since the response of cold-stressed plant cells is quite complex, it
consists of many different mechanisms. Cold acclimation and deacclimation are adaptive
mechanisms responsible for the survival of the plant during the cold and for the continuation of
growth and development. Age is just one of the factors that influence the cold tolerance of plants.
This paper describes the cellular changes induced by the exposure to cold stress, and the response
of plant cells to cold stress, including the process of acclimation and deacclimation. The paper also
briefly reviews stratification and vernalization, plant developmental processes that are dependent
on cold stimuli.

• Keywords: aklimatizacija; deaklimatizacija; fotosinteza; stratifikacija; vernalizacija
• Keywords (english): chilling; acclimation; deacclimation; photosynthesis; stratification; vernalization
• Language: croatian
• URN:NBN: urn:nbn:hr:217:845774
• 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: 2023-07-21 09:39:20