In previous studies about different kinds of stress (wounding and cold storage) below bud potato tuber (Solanum tuberosum L. cv. Kennebec), a relationship between lipoperoxides (LOOH) and indole-3-acetic acid (IAA) has been shown (Fabbri et al., 2000; J. Exp. Bot. 51: 1267-75; Reverberi et al., Free Rad. Res. 2001, 35: 833-841). Endogenous LOOH, originated from lipoxygenase (LOX) action and exogenously added, increased the formation of IAA at different times after wounding (20 min) and after cold storage (from 90 to 180 days). Furthermore LOX inhibitors (salicylhydroxamic acid, SHAM, 1mM and nordihydroguaiaretic acid NDGA, 1 mM) inhibited this effect confirming the correlation between LOOH and IAA in potato tubers. It is known that also the biosynthesis of jasmonic acid (JA) and its derivative methyljasmonate (MeJA) is related with the formation of LOOH. In this work a possible correlation between MeJA and IAA in potato tubers sliced below bud has been studied. MeJA (10 mM) added on potato tuber slices enhanced, after 24 h the production of IAA and IAA, added at the same concentration, increased the formation of JA and MeJA 20-30 min after wounding. These results, obtained by GC/MS analyses, showed a possible direct or indirect correlation between MeJA and IAA.

Abiotic stress in Potato Tuber: Analysis of some factors related to Oxidative Stress / Reverberi, Massimo; Fabbri, Anna Adele; Zjalic, Slaven; S., Briganti; Fanelli, Corrado. - In: JOURNAL OF PLANT PATHOLOGY. - ISSN 1125-4653. - ELETTRONICO. - 84:3(2002), pp. 192-192. (Intervento presentato al convegno SIPaV 9th ANNUAL MEETING tenutosi a Roma, Italy nel 1-2 ottobre 2002) [10.4454/jpp.v84i3.1100].

Abiotic stress in Potato Tuber: Analysis of some factors related to Oxidative Stress

REVERBERI, Massimo;FABBRI, Anna Adele;ZJALIC, Slaven;FANELLI, Corrado
2002

Abstract

In previous studies about different kinds of stress (wounding and cold storage) below bud potato tuber (Solanum tuberosum L. cv. Kennebec), a relationship between lipoperoxides (LOOH) and indole-3-acetic acid (IAA) has been shown (Fabbri et al., 2000; J. Exp. Bot. 51: 1267-75; Reverberi et al., Free Rad. Res. 2001, 35: 833-841). Endogenous LOOH, originated from lipoxygenase (LOX) action and exogenously added, increased the formation of IAA at different times after wounding (20 min) and after cold storage (from 90 to 180 days). Furthermore LOX inhibitors (salicylhydroxamic acid, SHAM, 1mM and nordihydroguaiaretic acid NDGA, 1 mM) inhibited this effect confirming the correlation between LOOH and IAA in potato tubers. It is known that also the biosynthesis of jasmonic acid (JA) and its derivative methyljasmonate (MeJA) is related with the formation of LOOH. In this work a possible correlation between MeJA and IAA in potato tubers sliced below bud has been studied. MeJA (10 mM) added on potato tuber slices enhanced, after 24 h the production of IAA and IAA, added at the same concentration, increased the formation of JA and MeJA 20-30 min after wounding. These results, obtained by GC/MS analyses, showed a possible direct or indirect correlation between MeJA and IAA.
2002
SIPaV 9th ANNUAL MEETING
04 Pubblicazione in atti di convegno::04c Atto di convegno in rivista
Abiotic stress in Potato Tuber: Analysis of some factors related to Oxidative Stress / Reverberi, Massimo; Fabbri, Anna Adele; Zjalic, Slaven; S., Briganti; Fanelli, Corrado. - In: JOURNAL OF PLANT PATHOLOGY. - ISSN 1125-4653. - ELETTRONICO. - 84:3(2002), pp. 192-192. (Intervento presentato al convegno SIPaV 9th ANNUAL MEETING tenutosi a Roma, Italy nel 1-2 ottobre 2002) [10.4454/jpp.v84i3.1100].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/455626
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