Cross-talk interactions of exogenous nitric oxide and sucrose modulates phenylpropanoid metabolism in yellow lupine embryo axes infected with Fusarium oxysporum
PBN-AR
Instytucja
Wydział Biologii (Uniwersytet im. Adama Mickiewicza w Poznaniu)
Informacje podstawowe
Główny język publikacji
en
Czasopismo
PLANT SCIENCE
ISSN
0168-9452
EISSN
Wydawca
ELSEVIER IRELAND LTD
DOI
URL
Rok publikacji
2013
Numer zeszytu
Strony od-do
102-121
Numer tomu
211
Identyfikator DOI
Liczba arkuszy
Słowa kluczowe
en
Isoflavonoids; Fusarium oxysporum; Lupinus luteus; Nitric oxide; Sucrose; Semiquinone radicals
Streszczenia
Język
en
Treść
The aim of the study was to examine cross-talk of exogenous nitric oxide (NO) and sucrose in the mechanisms of synthesis and accumulation of isoflavonoids in embryo axes of Lupinus luteus L. cv. Juno. It was verified whether the interaction of these molecules can modulate the defense response of axes to infection and development of the pathogenic fungus Fusarium oxysporum f. sp. lupini. Sucrose alone strongly stimulated a high level of genistein glucoside in axes pretreated with exogenous nitric oxide (SNP or GSNO) and non-pretreated axes. As a result of amplification of the signal coming from sucrose and GSNO, high isoflavonoids accumulation was observed (+Sn+GSNO). It needs to be stressed that infection in tissues pretreated with SNP/GSNO and cultured on the medium with sucrose (+Si+SNP/+Si+GSNO) very strongly enhances the accumulation of free isoflavone aglycones. In +Si+SNP axes phenylalanine ammonia-lyase activity was high up to 72 h. As early as at 12 h in +Si+SNP axes an increase was recorded in gene expression level of the specific isoflavonoid synthesis pathway. At 24 h in +Si+SNP axes a very high total antioxidant capacity dependent on the pool of fast antioxidants was noted. Post-infection generation of semiquinone radicals was lower in axes with a high level of sucrose than with a deficit.
Cechy publikacji
ORIGINAL_ARTICLE
Inne
System-identifier
556141
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