20.500.12556/RUL-109481 Vpliv salicilne kisline in njenih derivatov na sadne rastline The impact of salicylic acid and its derivatives on fruit plants 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. 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. salicilna kislina sadne rastline rastlinski hormon kakovost plodov salicylic acid fruit plants plant hormone fruit quality true false false [B. Dimec] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2019-09-04 07:45:25 2019-09-04 07:45:27 2022-08-21 03:42:26 0000-00-00 00:00:00 2019 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 634.1/.4:631.811.982:547.587.1(043.2) 167157 9280121 7585.pdf 7585.pdf 1 0244A4CD5070145D82648043FC879CC3 085ba0f81681c659d431a6860794e2a78d967e13c132b90614905517c7cd3a3c e0e3b4a0-a1b6-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=121058 Biotehniška fakulteta 0 0 0