In the secdlings of six species: Aegilops sqttarrosa L., Triticum aestivum L. cr,. Orso, Triticum monococcoccum L., Triticum persicum (Percival ) Varvilor, Calotopis procera L. , and Zea mais L . cv . Dekalb XL 72A, r bulose-1, -5-bi sphosphzci taer box l ' lase( EC 4.1. 1.39)p hosphocnol - pyruvate carboxylase (EC 4.I.1.31) activities and protein contents progressivel. v eclined rvith increasing \vater deficit rvhilst peroxidase (EC 1.11.1'7) and catalase (EC 1.11.1.6)a c t i r , i t ies u'ere, in almos t z r l l the spec ies , i ncreasecl or maintained undcr the same conditions. Superoxide dismutase (EC. 1.15.1.1.a)c t i r , i t vw as inc reasedo r maintained in some spec iesr t 'hi l s t was clecreased in others. In most cases, the content of malondialdehvde, a peroxidative lipid breakdorvn product, was found to decline ars \\'ater potential in the tissue decreased. The reported results suggest that the iestecl sca\,enging activities could be increased in plant tissucs as a dcfcnsive response to \\'ater-stress dependent formation of hvdrogen peroxide and, in some species, of suPeroxide.
Catalase, peroxidase and superoxide dismutase in plant seedlings submitted to water deficit / M., Badiani; DE BIASI, MARGHERITA-GABRIELLA; F., Artemi; M., Colognola. - In: AGROCHIMICA. - ISSN 0002-1857. - STAMPA. - 34:1-2(1990), pp. 90-102.
Catalase, peroxidase and superoxide dismutase in plant seedlings submitted to water deficit.
DE BIASI, MARGHERITA-GABRIELLA
;
1990
Abstract
In the secdlings of six species: Aegilops sqttarrosa L., Triticum aestivum L. cr,. Orso, Triticum monococcoccum L., Triticum persicum (Percival ) Varvilor, Calotopis procera L. , and Zea mais L . cv . Dekalb XL 72A, r bulose-1, -5-bi sphosphzci taer box l ' lase( EC 4.1. 1.39)p hosphocnol - pyruvate carboxylase (EC 4.I.1.31) activities and protein contents progressivel. v eclined rvith increasing \vater deficit rvhilst peroxidase (EC 1.11.1'7) and catalase (EC 1.11.1.6)a c t i r , i t ies u'ere, in almos t z r l l the spec ies , i ncreasecl or maintained undcr the same conditions. Superoxide dismutase (EC. 1.15.1.1.a)c t i r , i t vw as inc reasedo r maintained in some spec iesr t 'hi l s t was clecreased in others. In most cases, the content of malondialdehvde, a peroxidative lipid breakdorvn product, was found to decline ars \\'ater potential in the tissue decreased. The reported results suggest that the iestecl sca\,enging activities could be increased in plant tissucs as a dcfcnsive response to \\'ater-stress dependent formation of hvdrogen peroxide and, in some species, of suPeroxide.File | Dimensione | Formato | |
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Catalase, peroxidase and superoxide dismutase activities in seedlings submitted to increasing water deficit Agrochimica 1990.pdf
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