Stress-Related Proteins Are Specifically Expressed under Non-Stress Conditions in the Overwinter Buds of the Gentian Plant Gentiana triflora
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概要
- 論文の詳細を見る
The overwinter bud of the gentian plant, Gentiana triflora, is an organ that develops from the basal tuber in late spring and becomes dormant and freezing-tolerant for overwintering. Here, proteins specifically enriched in the overwinter buds were identified using two-dimensional polyacrylamide gel electrophoresis followed by amino acid sequencing. Enriched proteins included those so far identified as stress- and cold-inducible in other plants, i. e., two isoforms of ethylene-induced esterase, a dehydration-induced protein, glyoxalase I, thioredoxin peroxidase, two isoforms of ascorbate peroxidase and a membrane pore protein. Interestingly, the stress-related proteins had already accumulated in the overwinter buds under non-stress conditions in early summer. Accumulation of these proteins was also examined in a mutant gentian, which developed overwinter buds but lacked cold tolerance and died under conditions below 3℃. In this mutant, several proteins including one of the putative esterase, enolase and ascorbate peroxidase were absent or greatly decreased. Thus, it appears that these stress-related proteins are expressed under non-stress conditions to aquire cold tolerance before overwintering.
- 日本育種学会の論文
著者
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Yamashita Tetsuro
Department Of Chemical Engineering Faculty Of Engineering Iwate University
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Saitoh Yasushi
United Graduate School Of Agricultural Sciences Iwate Univ.
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Hikage Takashi
Cryobiosystem Research Center Iwate University
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SAITOH Yasushi
Cryobiosystem Research Center, Iwate University
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TSUTSUMI Ken-ichi
Cryobiosystem Research Center, Iwate University
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Takahashi Miho
Cryobiosystem Research Center, Faculty of Agriculture, Iwate University
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Endou Motonobu
Department of Agro-biosciences, Faculty of Agriculture, Iwate University
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Yamashita Tetsuro
Department Of Agro-bioscience Faculty Of Agriculture Iwate University
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Tsutsumi Ken-ichi
United Graduate School Of Agricultural Sciences Iwate Univ.
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Tsutsumi Ken-ichi
Cryobiosystem Research Center Iwate University
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Saitoh Yasushi
Cryobiosystem Research Center Iwate University
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Endou Motonobu
Department Of Agro-biosciences Faculty Of Agriculture Iwate University
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Takahashi Miho
Cryobiosystem Research Center Faculty Of Agriculture Iwate University
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