Plastoquinone: possible involvement in plant disease resistance. | Zendy

Urszula Maciejewska | Zendy; Lidia PolkowskaKowalczyk | Zendy; Ewa Świeżewska | Zendy; Anna Szkopińska | Zendy

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Plastoquinone: possible involvement in plant disease resistance.

Author(s) -

Urszula Maciejewska,

Lidia PolkowskaKowalczyk,

Ewa Świeżewska,

Anna Szkopińska

Publication year - 2002

Publication title -

acta biochimica polonica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.452

H-Index - 78

eISSN - 1734-154X

pISSN - 0001-527X

DOI - 10.18388/abp.2002_3785

Subject(s) - phytophthora infestans , elicitor , reactive oxygen species , oxidative stress , plastoquinone , lipid peroxidation , antioxidant , chemistry , biology , botany , biochemistry , enzyme , chloroplast , blight , thylakoid , gene

The plant Solanum nigrum treated with the pathogen Phytophthora infestans-derived elicitor responded by elevated reactive oxygen species (ROS) production, lipid peroxidation and lipoxygenase (EC 1.13.11.12) activity in comparison with control plants indicating that oxidative stress took place. We demonstrate that these events are accompanied by a significant increase in plastoquinone (PQ) level. It is postulated that PQ may be associated with mechanisms maintaining a tightly controlled balance between the accumulation of ROS and antioxidant activity that determines the full expression of effective defence.

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