Abstract
The patterns of in vivo protein synthesis in soybean cell suspensions were compared by polyacrylamide gel electrophoresis after the cells had been submitted to different stress conditions : treatment with Phytophthora megasperma (Pmg) cell wall elicitors, 2,4-D starvation and heat shock (HS) temperatures. Changes in protein synthesis patterns induced after elicitation of cell suspensions or after infection of soybean hypocotyls by Pmg were found to be similar to changes brought about by auxin starvation of the cells. Changes common to both stress situations involve a prominent 17 kDa peptide family and 27, 29, 35 and about 45 kDa peptides. Moreover, “defense” reactions, i.e. glyceollin accumulation and synthesis of chalcone synthase (CHS) were also strongly stimulated in auxin-starved cells. On the contrary, although characteristic sets of low molecular weight heat shock (HS) proteins were synthesized by cells grown at 37°C, no clear similarity was observed with peptides characteristic of auxin-starved cells.
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Abbreviations
- 2,4-D:
-
2,4-dichlorophenoxyacetic acid
- Pmg:
-
Phytophthora megasperma Drechs f.sp.glycinea
- HS:
-
heat shock
- PR:
-
pathogenesis-related
- SDS-PAGE:
-
sodium dodecylsulfate-polyacrylamide gel electrophoresis
- IEF:
-
isoelectrofocusing
- iP:
-
isoelectric point
- kDa:
-
kilodalton
- P17:
-
17 kDa peptide group of soybean cells cultured in vitro
- CHS:
-
chalcone synthase
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Communicated by A. M. Boudet
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Leguay, J.J., Piécoup, M., Puckett, J. et al. Common responses of cultured soybean cells to 2,4-D starvation and fungal elicitor treatment. Plant Cell Reports 7, 19–22 (1988). https://doi.org/10.1007/BF00272969
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DOI: https://doi.org/10.1007/BF00272969