Comparison of a compatible and an incompatible pepper-tobamovirus interaction by biochemical and non-invasive techniques: Chlorophyll a fluorescence, isothermal calorimetry and FT-Raman spectroscopy

Magdalena Rys, Csilla Juhász, Ewa Surówka, Anna Janeczko, Diana Saja, István Tóbiás, Andrzej Skoczowski, B. Barna, G. Gullner

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Leaves of a pepper cultivar harboring the L3 resistance gene were inoculated with Obuda pepper virus (ObPV), which led to the appearance of hypersensitive necrotic lesions approx. 72 h post-inoculation (hpi) (incompatible interaction), or with Pepper mild mottle virus (PMMoV) that caused no visible symptoms on the inoculated leaves (compatible interaction). ObPV inoculation of leaves resulted in ion leakage already 18 hpi, up-regulation of a pepper carotenoid cleavage dioxygenase (CCD) gene from 24 hpi, heat emission and declining chlorophyll a content from 48 hpi, and partial desiccation from 72 hpi. After the appearance of necrotic lesions a strong inhibition of photochemical energy conversion was observed, which led to photochemically inactive leaf areas 96 hpi. However, leaf tissues adjacent to these inactive areas showed elevated ΦPSII and Fv/Fm values proving the advantage of chlorophyll a imaging technique. PMMoV inoculation also led to a significant rise of ion leakage and heat emission, to the up-regulation of the pepper CCD gene as well as to decreased PSII efficiency, but these responses were much weaker than in the case of ObPV inoculation. Chlorophyll b and total carotenoid contents as measured by spectrophotometric methods were not significantly influenced by any virus inoculations when these pigment contents were calculated on leaf surface basis. On the other hand, near-infrared FT-Raman spectroscopy showed an increase of carotenoid content in ObPV-inoculated leaves suggesting that the two techniques detect different sets of compounds.

Original languageEnglish
Pages (from-to)267-278
Number of pages12
JournalPlant Physiology and Biochemistry
Volume83
DOIs
Publication statusPublished - Oct 1 2014

Fingerprint

Tobamovirus
Obuda pepper virus
Raman spectroscopy
Calorimetry
Raman Spectrum Analysis
calorimetry
pepper
Fluorescence
fluorescence
Viruses
chlorophyll
Carotenoids
carotenoids
Pepper mild mottle virus
heat emissions
leaves
lesions (plant)
Dioxygenases
methodology
ions

Keywords

  • Capsicum annuum
  • Chlorophyll a fluorescence imaging
  • Obuda pepper virus
  • Pepper mild mottle virus
  • PSII efficiency
  • Raman spectroscopy
  • Specific thermal energy

ASJC Scopus subject areas

  • Plant Science
  • Genetics
  • Physiology
  • Medicine(all)

Cite this

Comparison of a compatible and an incompatible pepper-tobamovirus interaction by biochemical and non-invasive techniques : Chlorophyll a fluorescence, isothermal calorimetry and FT-Raman spectroscopy. / Rys, Magdalena; Juhász, Csilla; Surówka, Ewa; Janeczko, Anna; Saja, Diana; Tóbiás, István; Skoczowski, Andrzej; Barna, B.; Gullner, G.

In: Plant Physiology and Biochemistry, Vol. 83, 01.10.2014, p. 267-278.

Research output: Contribution to journalArticle

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AU - Tóbiás, István

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