Journal Article

A Connection between the Self-Incompatibility Mechanism and the Stress Response in Lily

Takafumi Tezuka, Akiko Tsuruhara, Hajime Suzuki and Susumu Y. Takahashi

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 38, issue 2, pages 107-112
Published in print January 1997 | ISSN: 0032-0781
Published online January 1997 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/oxfordjournals.pcp.a029139
A Connection between the Self-Incompatibility Mechanism and the Stress Response in Lily

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An attempt was made to examine the possible connection between self-incompatibility in Lilium longiflorum and the stress response using pistils after self-incompatible pollination. The growth of pollen tubes in the pistil after self-incompatible pollination was promoted by treatment with germanium compounds [(GeCH2CH2COOH)2O3 and GeO2], which are scavengers of active oxygen species, such as O2 and H2O2. The promotion by germanium compounds of the growth of pollen tubes after self-incompatible pollination was reflected by the detection of elevated levels of activity of superoxide-forming NADPH-dependent oxidase, xanthine oxidase, superoxide dismutase, catalase and ascorbate peroxidase, all of which are associated with stress responses, in pistils upon self-incompatible pollination as compared to the activities of these enzymes after cross-compatible pollination. A possible connection between self-incompatibility and stress in pistils upon self-incompatible pollination is discussed on the basis of these results.

Keywords: Germanium compounds; Lilium longiflorum; Pollen tube; Self-incompatibility; Stress

Journal Article.  0 words. 

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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