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dc.contributor.authorHernández, José Antonioes_ES
dc.contributor.authorEscobar, Carolinaes_ES
dc.contributor.authorCreissen, Garyes_ES
dc.contributor.authorMullineaux, Phil M.es_ES
dc.identifier.citationBiologia Plantarum 50(3): 395-399 (2006)es_ES
dc.description.abstractExposure of pea plants to high irradiance (HI) for 60 min caused a reversible photoinhibition as shown by changes in variable to maximum fluorescence ratio (Fv/Fm). A significant decline in Fm was observed in leaves from both pea cultivars subjected to HI, the decrease being higher in JI281 than in JI399 plants. The values recovered during the post-stress period in both cultivars. In both cultivars, minimal fluorescence (F0) increased under HI, but in cultivar JI399 F0 recovered to initial value during the post-stress period. The expression of antioxidant enzyme genes was higher in JI399 than in JI281, both in control and stressed plants. In JI281, after 60 min of HI, an induction of the transcripts of CAT, chlMDHAR, cytAPX and cytCu,Zn-SOD was observed, whereas there was a slight increase in PHGPX, stAPX and chlCu,Zn-SOD mRNAs. After 24 h of the recovery period, the induction of some transcripts was not maintained (CAT, cytAPX and cytCu,Zn-SOD), whereas the induction of others was maintained (PHGPX and chlCu,ZnSOD) or even increased (cytGR, stAPX and chlMDHAR). In JI399, CAT and cytAPX were increased strongly after 60 min of HI, and slight increases were observed in cytGR, chlGR and chlMDHAR. In the post-stress period the expression of stAPX, cytGR and chlMDHAR was even slightly higher than after 60 min of HI, however, expression of CAT, cytAPX, cytCu,ZnSOD, chlCu,ZnSOD and chlGR decreased.es_ES
dc.subjectAscorbate peroxidasees_ES
dc.subjectGene expressiones_ES
dc.subjectPhotooxidative stresses_ES
dc.subjectPisum sativumes_ES
dc.subjectSuperoxide dismutasees_ES
dc.titleAntioxidant enzyme induction in pea plants under high irradiancees_ES
dc.description.peerreviewedPeer reviewedes_ES
oprm.item.hasRevisionno ko 0 false*
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