Identification of a 23kDa protein (P23k) related to the sugar supply in germinating barley seeds

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概要

• 論文の詳細を見る

• We identified a 23 kDa protein expressed abundantly in young barley seedlings; this protein was named P23k. P23k was shown to have evolved in barley and its allied species such as wheat, oat and rye, suggesting that P23k might be closely related to a specific biological trait of winter cereals. To determine the function of P23k, we examined the expression and localization of P23k and its mRNA in barley seedlings. P23k mRNA was markedly expressed in the scutellum of imbibed barley seeds, and was synchronously down-regulated with consumption of the starchy endosperm. In addition, ABA and sugar treatment of the scutellum showed that expression of P23k is highly dependent on the supply of glucose or sucrose, both of which are starch catabolites. Furthermore, immunocytochemical analysis showed that P23k is primarily localized around the membranes, where sugar translocation is active. These results indicate that P23k plays a role in sugar translocation in young barley seedlings.

• 日本植物細胞分子生物学会の論文
• 2006-09-01

著者

• Yamashita Tetsuro

  Department Of Chemical Engineering Faculty Of Engineering Iwate University

• Yamashita Tetsuro

  Department Of Agro-bioscience Faculty Of Agriculture Iwate University

• Kato Kiyoaki

  Department Of Crop Science Obihiro University Of Agriculture And Veterinary Medicine

• Ejiri S

  Cryobiosystem Research Center Faculty Of Agriculture Iwate University

• Ejiri Shin-ichiro

  Cryobiosystem Research Center Faculty Of Agriculture Iwate University

• Ejiri Shin-ichiro

  Cryobiosystem Research Center (crc) Faculty Of Agriculture Iwate University

• OIKAWA Ai

  Cryobiosystem Research Center, Faculty of Agriculture, Iwate University

• KIDOU Shin-ichiro

  Graduate School of Natural Sciences, Nagoya City University

• KIDOU Shin-ichiro

  Cryobiosystem Research Center, Faculty of Agriculture, Iwate University

• SASAKI Naoko

  Cryobiosystem Research Center, Faculty of Agriculture, Iwate University

• YASUDA Hiroshi

  Cryobiosystem Research Center, Faculty of Agriculture, Iwate University

• KOIWA Hiroyuki

  Iwate Biotechnology Research Center

• Oikawa Ai

  Cryobiosystem Research Center Faculty Of Agriculture Iwate University

• Yamashita T

  Department Of Agro-bioscience Faculty Of Agriculture Iwate University

• Sasaki Naoko

  Cryobiosystem Research Center Faculty Of Agriculture Iwate University

• Kidou Shinichiro

  Graduate School Of Natural Sciences Nagoya City University

• Kidou Shin-ichiro

  Cryobiofrontier Research Center Iwate University

• Yasuda Hiroshi

  Cryobiosystem Research Center Faculty Of Agriculture Iwate University

• KATO Kiyoaki

  Department of Agro-Environmental Science, Obihiro University of Agriculture and Veterinary Medicine

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