Role of cell wall synthesis in cell elongation.

细胞壁合成在细胞伸长中的作用。

• 批准号: 61229012
• 负责人: YAMAMOTO Ryoichi
• 金额: $ 1.28万
• 依托单位: Tezukayama College
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Special Project Research
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-61229012/
• 关键词: Auxin; Cell wall synthesis; Galactose; Growth; UDPグルコース合成

We reported that galactose is a specific inhibitor of cell wall synthesis. and that growth of monocotyledons is inhibited by galactose and that of dicotyledons is not. Galactose was found to inhibit formation of UDP-glucose, which is a substrate of cell wa synthesis. The activity of UDP-glucose synthetase, that is, UTP:glucose-1-phosphate uridylyltransferase (EC 2.7.7.9) is inhib by galactose-1-phosphate in oat, maize and wheat but not in azuki bean, mung bean and cucumber. From these results, it can be concl that galactose is first converted to galactose-1-phosphate, then inhibits UDP-glucose formation and thus cell wall synthesis.

我们报道了半乳糖是细胞壁合成的一种特异性抑制物。单子叶植物的生长受半乳糖的抑制，而双子叶植物的生长不受抑制。半乳糖被发现抑制UDP-葡萄糖的形成，UDP-葡萄糖是细胞Wa合成的底物。燕麦、玉米和小麦的UDP-葡萄糖合成酶，即UTP：葡萄糖-1-磷酸糖醛酸基转移酶(EC 2.7.7.9)的活性被半乳糖-1-磷酸抑制，而在赤豆、绿豆和黄瓜中则不受抑制。从这些结果可以看出，半乳糖首先转化为半乳糖-1-磷酸，然后抑制UDP-葡萄糖的形成，从而抑制细胞壁的合成。

项目成果

M. Inouhe, R. Yamamoto and Y. Masuda: "UDP-Glucose level as a limiting factoe for IAA-induced cell elongation in Avena coleoptile segments." Physiologia Plantarum. 69. 49-54 (1987)

M. Inouhe、R. Yamamoto 和 Y. Masuda：“UDP-葡萄糖水平是 IAA 诱导的燕麦胚芽鞘节段细胞伸长的限制因素。”

R. Yamamoto: "Effect of galactose on auxin-induced cell elongation in oat coleoptile segments in mannitol solutions." Botanical Magazine, Tokyo. 100. 43-49 (1987)

R. Yamamoto：“半乳糖对甘露醇溶液中生长素诱导的燕麦胚芽鞘节段细胞伸长的影响。”

M. Inouhe, R. Yamamoto and Y. Masuda: "Effects of IAA and galactose on the UTP level and UDP-glucose formation in Avena coleoptile and Vigna epicotyl segments." Physiologia Plantarum.

M. Inouhe、R. Yamamoto 和 Y. Masuda：“IAA 和半乳糖对燕麦胚芽鞘和苋菜上胚轴节段中 UTP 水平和 UDP-葡萄糖形成的影响。”

井上雅裕,山本良一,増田芳雄: Physiologia Plantarum. 69. 49-54 (1987)

Masahiro Inoue、Ryoichi Yamamoto、Yoshio Masuda：植物生理学 69. 49-54 (1987)。

井上雅裕,山本良一,増田芳雄: Physmoloia Plantarum.

Masahiro Inoue、Ryoichi Yamamoto、Yoshio Masuda：Physmoloia Plantarum。