Studies on sink activity-controlling mechanisms in sweet potato production.

甘薯生产库活动控制机制研究.

• 批准号: 10460010
• 负责人: KUBOTA Fumitake
• 金额: $ 8.9万
• 依托单位: KTYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-10460010/
• 关键词: AGPase; Tuber production; Sweet potato; Glucose; Sink; Sucrose; Source; フルクトース; デンプン; サツマイモ; シンク・ソース; 人工ソース; デンプン合成; 塊根肥大; 個葉光合成; スクロース注入; 葉肉伝導度

It has been known that the genetic improvement of sink activity is essential to get a large enhancement of sweet potato yield. The endogenous injection of sucrose solution into plants was tried here to elucidate the effect on increasing the activity of enzymes such as AGPase included in starch synthesis process in roots and improving root productivity. The injections of glucose and fructose solutions were also effective. The distribution of injected sugar or carbon to plant organs was surveyed using a ^<13>C analyzer purchased by this grant-in-aid. This survey gave such an understanding in sink-source relationship that the increase of sugar concentration became a trigger to increase the activity of enzyme and sink organ, and this caused an increase in leaf photosynthesis with a final result of increase of starch production in roots. This finding may indicate a new viewpoint in the analysis of sink-source relationship and provide fundamental information in physiological and genetic control of enzyme activity in sweet potato and other many crops.

库活性的遗传改良是甘薯产量大幅度提高的关键。本试验旨在探讨内源注射蔗糖溶液对提高根系淀粉合成过程中相关酶活性，提高根系生产力的作用。注射葡萄糖和果糖溶液也有效。利用该补助金购买的碳分析仪，调查了注入的糖或碳在植物器官中的分布<13>。本研究从库源关系的角度认识到，糖浓度的增加是提高酶活性和库器官活性的触发器，从而引起叶片光合作用的增强，最终导致根系淀粉产量的增加。这一发现为分析甘薯库源关系提供了一个新的视角，也为甘薯等作物酶活性的生理和遗传调控提供了基础信息。

项目成果

坪根正雄・窪田文武ら: "スクロースの茎内注入がサツマイモ塊根の肥大に及ぼす影響" 日本作物学会紀事. 67(別2). 140-141 (1998)

Masao Tsubone，Fumitake Kubota 等人：“茎内注射蔗糖对甘薯块根膨大的影响”，日本作物科学学会杂志 67（第 2 部分）（1998 年）。

A.Ishida,F.Kubota et.al: "Source activity evaluation by grafted leaves in sweet potato (Ipomoea batatas Lam.) cutivars"J.Fac.Agr., Kyushu Univ.. 44(1・2). 73-80 (1999)

A.Ishida、F.Kubota 等人：“通过甘薯（Ipomoea batatas Lam.）品种的嫁接叶进行源活性评价”J.Fac.Agr.，九州大学 44（1・2）。 (1999)

A.Ishida,F.Kubota et.al: "Source activity evaluation by grafted leaves in sweet potato (Ipomea batatas Lam.) cultivars"J.Fac.Agr.,Kyushu Univ.. 44(1/2). 73-80 (1999)

A.Ishida，F.Kubota 等：“甘薯（Ipomea batatas Lam.）品种嫁接叶的源活性评价”J.Fac.Agr.，九州大学。44（1/2）。

Y.Yoshimura and F.Kubota: "Estimation of vein length in a leaf of sweet potato (Ipomoea batatas Lam.) by the lattice crossing method."J.Kyushu Univ.. 44. 73-80 (1999)

Y.Yoshimura 和 F.Kubota：“通过格子交叉法估算甘薯 (Ipomoea batatas Lam.) 叶子中的静脉长度。”J.Kyushu Univ.. 44. 73-80 (1999)

M.Tubone, F.Kubota et. al: "Enhancement of tuberous root production and adenosine 5'- diphosphate glucose pyrophosphorylase (AGPase) activity in sweet potato, Ipomoea batatas Lam., by exogenous injection of sucrose solution."J.Agronomy and Crop Sci.. (in

M.Tubone，F.Kubota 等。