diplomsko delo
Blaž Dimec (Author), Robert Veberič (Mentor)

Abstract

Rastline in njihovi plodovi, so med svojo življenjsko dobo podvrženi različnim okoljskim stresnim dejavnikom. Salicilna kislina (SA) je rastlinski hormon, ki deluje kot signalna molekula pri odzivu rastline na okoljski stres ali pri okužbi s patogenom. Njen signal lahko izzove sistemično pridobljeno odpornost (SAR), ki preko različnih mehanizmov inducira izražanje genov za obrambo rastlin pred stresom in patogeni. Endogeno sintezo SA lahko sprožijo različni abiotični in biotični dejavniki iz okolja, njene odzive pa aktivira tudi njen eksogeni nanos. SA ima pomembno vlogo pri ohranjanju kakovosti plodov, s tem da zavira sintezo etilena, zmanjšuje dihanje in aktivnost encimov, ki so odgovorni za razgradnjo celične stene. Poveča tudi učinek uporabe antagonističnih kvasovk pri preprečevanju gnitja, ki ga povzročajo glivični rastlinski patogeni. Učinek SA je odvisen od načina aplikacije, njene endogene vsebnosti v rastlini in razvojne faze rastline.

Keywords

salicilna kislina;sadne rastline;rastlinski hormon;kakovost plodov;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL BF - Biotechnical Faculty
Publisher: [B. Dimec]
UDC: 634.1/.4:631.811.982:547.587.1(043.2)
COBISS: 9280121 Link will open in a new window
Views: 763
Downloads: 157
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Other data

Secondary language: English
Secondary title: ǂThe ǂimpact of salicylic acid and itd derivates on fruit plants
Secondary abstract: Plants and their fruit are subjected to various environmental stresses during their lifetime. Salicylic acid (SA) is a plant hormone that acts as a signal molecule in the response of the plant to environmental stress or pathogen attack. Its signal provokes systemic acquired resistance (SAR), which, through various mechanisms, is able to induce the expression of genes, for the defense of plants against stress and pathogens. The endogenous content of SA can be triggered by various abiotic or biotic factors from the environment, and its responses are also activated by exogenous application. SA plays an important role in preserving the fruit quality by inhibiting the synthesis of ethylene, reducing the degree of respiration and the activity of enzymes responsible for cell wall degradation. It also increases the effect of antagonistic yeasts in the control of rotting, caused by fungal plant pathogens. The effect of SA depends on the way of application, its endogenous content in the plant and the stage of plant development.
Secondary keywords: salicyclic acid;fruit plants;plant hormone;fruit quality;
Type (COBISS): Bachelor thesis/paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Biotehniška fak., Oddelek za agronomijo
Pages: VI, 18 str.
ID: 11215332