RAPID, SYSTEMIC REPRESSION OF THE SYNTHESIS OF RIBULOSE 1,5-BISPHOSPHATE CARBOXYLASE SMALL-SUBUNIT MESSENGER-RNA IN FUNGUS-INFECTED OR ELICITOR-TREATED POTATO LEAVES

被引:32
作者
KOMBRINK, E
HAHLBROCK, K
机构
[1] Abteilung Biochemie, Max-Planck-Institut für Züchtungsforschung, Köln 30
关键词
Gene transcription; Pathogen (defense response); Ribulose 1,5-bisphosphate carboxylase (small subunit); Solanum (defense response); Transcription; (activation; inactivation);
D O I
10.1007/BF02411541
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The levels of ribulose 1,5-bisphosphate carboxylase small-subunit (SSU) mRNA and protein decreased considerably in potato (Solanum tuberosum L.) leaves upon infection with the pathogenic fungus, Phytophthora infestans, or upon treatment with an elicitor preparation from the fungal culture fluid. This effect occurred systemically throughout the affected leaf, regardless of whether the interaction with P. infestans was compatible or incompatible. Using the comparatively drastic and synchronous response to fungal elicitor, we demonstrated that the repression of SSU synthesis was caused by rapid gene inactivation. The timing of repression was similar to that observed previously for the transcriptional activation of various pathogen defense reactions. This supports the hypothesis that induction of the extensive, multi-component defense response requires repression of other cellular functions to ensure metabolic balance. © 1990 Springer-Verlag.
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页码:216 / 219
页数:4
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