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2015 | 37 | 08 |

Tytuł artykułu

Interactions of S -methylmethionine and UV-B can modify the defence mechanisms induced in maize

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
We examined the interactions of an exogenously added non-proteinogenic amino acid, S-methylmethionine (SMM) and UV-B radiation in young maize plants. We observed that exposure to UV-B light caused a substantial increase in both the phenolics and anthocyanin contents. Pretreatment with SMM also induced a slight, but statistically significant increase in the total phenol content, and was also able to accelerate the rise in the UV-B-induced anthocyanin level. Gene expression patterns indicated that the general phenylpropanoid pathway was most strongly induced by the combined effect of SMM and UV, while the anthocyanin synthesis by the sole UV-B treatment. SMM treatment and UV-B light led to a substantial increase in the activities of the antioxidant enzymes catalase (CAT), ascorbate peroxidase (APX) and glutathione Stransferase and SMM pretreatment always enhanced the effect of UV-B. While the activity of CAT showed a significant increase in UV-B- and/or SMM-treated plants, APX was stimulated only by SMM. The present results suggest that the protective mechanisms induced by UV-B radiation could be enhanced by SMM treatment and reinforce the earlier observations of priming effects of SMM so that it can contribute to our knowledge about the SMMinduced protection against various types of stressors.

Słowa kluczowe

Wydawca

-

Rocznik

Tom

37

Numer

08

Opis fizyczny

fig.,ref.

Twórcy

autor
  • Department of Plant Physiology and Molecular Plant Biology, Institute of Biology, Eotvos Lorand University (ELTE), Pazmany Peter setany 1/C, 1117, Budapest, Hungary
autor
  • Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Brunszvik u. 2, 2462, Martonvasar, Hungary
autor
  • Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Brunszvik u. 2, 2462, Martonvasar, Hungary
autor
  • Department of Plant Physiology and Molecular Plant Biology, Institute of Biology, Eotvos Lorand University (ELTE), Pazmany Peter setany 1/C, 1117, Budapest, Hungary
autor
  • Department of Plant Physiology and Molecular Plant Biology, Institute of Biology, Eotvos Lorand University (ELTE), Pazmany Peter setany 1/C, 1117, Budapest, Hungary
autor
  • Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Brunszvik u. 2, 2462, Martonvasar, Hungary

Bibliografia

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Typ dokumentu

Bibliografia

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Identyfikator YADDA

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