Biochemical basis of apple leaf resistance to Erwinia amylovora infection

Summary: Erwinia amylovora is the most frequently found necrogenic bacterium on apple (Malus domestica Borkh.) trees, which causes progressive necrosis and blight of host plants. Rapid spread of bacteria through the host tissue can lead to the loss of entire trees in one growing season. In this work...

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Permalink: http://skupni.nsk.hr/Record/nsk.NSK01000736129/Details
Matična publikacija: Food technology and biotechnology
47 (2009), 3 ; str. 281-287
Glavni autor: Viljevac Vuletić, Marija (-)
Ostali autori: Dugalić, Krunoslav (-), Štolfa Čamagajevac, Ivna, Đermić, Edyta, Cvjetković, Bogdan, Sudar, Rezica, Kovačević, Josip, agronom, 1910-1980, Cesar, Vera, Lepeduš, Hrvoje, Jurković, Zorica
Vrsta građe: Članak
Jezik: eng
Predmet:
Online pristup: Food Technology and Biotechnology
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100 1 |a Viljevac Vuletić, Marija 
245 1 0 |a Biochemical basis of apple leaf resistance to Erwinia amylovora infection /  |c Marija Viljevac, Krunoslav Dugalić, Ivna Štolfa, Edyta Đermić, Bogdan Cvjetković, Rezica Sudar, Josip Kovačević, Vera Cesar, Hrvoje Lepeduš, Zorica Jurković. 
300 |b Ilustr. 
500 |a Congress of Croatian society of biochemistry and molecular biology, Osijek, Croatia, 17-20 September 2008 
504 |a Bibliografija: 36 jed 
520 8 |a Summary: Erwinia amylovora is the most frequently found necrogenic bacterium on apple (Malus domestica Borkh.) trees, which causes progressive necrosis and blight of host plants. Rapid spread of bacteria through the host tissue can lead to the loss of entire trees in one growing season. In this work, the aim is to investigate long-lasting biochemical responses in leaves of two apple cultivars (Enterprise and Golden delicious). Several histochemical (polyphenols, suberin and callose) and biochemical parameters (total polyphenols, superoxide dismutase – SOD, ascorbate peroxidase – APX and guaiacol peroxidase – GPOD) were screened 60 days after Erwinia inoculation in order to find their potential correlation with plant resistance mechanisms to the pathogen attack. Differential susceptibility to the pathogen attack observed between the investigated cultivars was in accordance with previous studies that characterized Enterprise as less susceptible and Golden delicious as more susceptible cultivar. Infected leaves of Golden delicious expressed symptoms seen as large brown areas at the abaxial side mostly placed at the leaf margin and necrosis also found peripherally, while damage in Enterprise leaves was observed as small brown spots and sporadic leaf edge necrosis. Increased SOD and GPOD activities combined with decreased polyphenol content as well as wide cuticle suberization in cultivar Enterprise should be considered as reliable biochemical parameters characterizing its ability to develop certain resistance to the pathogen infection. Furthermore, the absence of callose deposition in leaves of Enterprise confirmed our findings that thick suberized cuticle is likely the main defense mechanism that enables long-term efficient protection of apple leaves against biotic stress caused by Erwinia attack 
653 0 |a Erwinia amylovora  |a Bakterija  |a Palež lista  |a Jabuka 
700 1 |a Dugalić, Krunoslav 
700 1 |a Štolfa Čamagajevac, Ivna 
700 1 |a Đermić, Edyta 
700 1 |a Cvjetković, Bogdan 
700 1 |a Sudar, Rezica 
700 1 |a Kovačević, Josip,  |c agronom,  |d 1910-1980 
700 1 |a Cesar, Vera 
700 1 |a Lepeduš, Hrvoje 
700 1 |a Jurković, Zorica 
773 0 |t Food technology and biotechnology  |x 1330-9862  |g 47 (2009), 3 ; str. 281-287  |w nsk.(HR-ZaNSK)000174173 
981 |b B03/09 
998 |a Luko100510  |c vol2o121012 
856 4 2 |u http://hrcak.srce.hr/ftb  |y Food Technology and Biotechnology