Reactive oxygen and nitrogen species and hormone signalling in systemic infection of pea by Pea enation mosaic virus

Helena Kyseláková, Michaela Sedlářová, Martin Kubala, Vladimíra Nožková, Jana Piterková, Lenka Luhová, Ondřej Novák and Petr Ilík
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Helena Kyseláková: Centre of the Region HanĂĄ for Biotechnological and Agricultural Research
Michaela Sedlářová: Department of Botany, Faculty of Science, Palacky University in Olomouc, Olomouc, Czech Republic
Martin Kubala: Department of Biophysics, Faculty of Science, Palacky University in Olomouc, Olomouc, Czech Republic
Vladimíra Nožková: Centre of the Region HanĂĄ for Biotechnological and Agricultural Research
Jana Piterková: Department of Biochemistry, Faculty of Science, Palacky University in Olomouc, Olomouc, Czech Republic
Lenka Luhová: Department of Biochemistry, Faculty of Science, Palacky University in Olomouc, Olomouc, Czech Republic
Ondřej Novák: Laboratory of Growth Regulators, Palacky University and Institute of Experimental Botany AS CR, Olomouc, Czech Republic
Petr Ilík: Centre of the Region HanĂĄ for Biotechnological and Agricultural Research

Plant Protection Science, 2013, vol. 49, issue 3, 105-119

Abstract: The physiological responses of pea plants during 40 days of compatible interaction with Pea enation mosaic virus (PEMV) were evaluated. PEMV induces systemic changes in the concentration of phytohormones. At 5 days post inoculation (dpi), a simultaneous increase in abscisic acid (ABA) level and a decrease in salicylic acid (SA) level was observed, which is known to be involved in the suppression of hypersensitive reaction. In our pathosystem it preceded the virus presence in the systemic leaves. PEMV induces the accumulation of ABA, SA and Hsp70 and enhances peroxidase (POX) activity at 15 dpi, when it is already transmitted throughout the plant. The formation of enations was preceded by a local accumulation of nitric oxide, which was followed by the appearance of reactive oxygen species, mostly in the vicinity of leaf veins. Such heterogeneity suggests involvement of these molecules in the control of hyperplasia and tissue differentiation.

Keywords: PEMV; Pisum sativum; heat shock proteins; hydrogen peroxide; nitric oxide; phytohormones (search for similar items in EconPapers)
Date: 2013
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpps:v:49:y:2013:i:3:id:51-2012-pps

DOI: 10.17221/51/2012-PPS

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