Analysis of Stopping Mechanism of Dry Matter Accumulation in Seeds of Rape Plants.

油菜种子干物质积累的停止机制分析。

• 批准号: 01480042
• 负责人: INANAGA Shinobu
• 金额: $ 4.42万
• 依托单位: Tottori University (1991)The University of Tokyo (1989-1990)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-01480042/
• 关键词: Rape plants; Seed; Dry matter accumulation; Inorganic matter; Sugar; Amino acid; Abscissic acid; ナタネ種子; 物質転流; カリウム; カルシウム; 物質転流経路; 光合成産物; エチレン; ニュ-トロン・ラジオグラフィ-; 物質蓄積停止; 油脂; 穂培養; ジベレリン

A seed of rape plants stops to increase its dry weight at maturing stage. We showed that a stop of photosynthesis of pod wall was not the cause of the stop of seed growth before. In this research, we investigated mainly whether a stop of assimilate unloading of seed coats was the cause of the stop of seed growth or not. When abscissic acid (ABA) concentration in pod wall went up temporarily, the decline of water content of pod wall and seeds was stared. And then ABA concentrations of seed coats and embryo went up temporarily, and calcium accumulation in embryo was stopped. After that, calcium in embryo and other parts were translocated to and accumulated in seed coats. Embryo stopped to increase its dry weight at the same time. Just before it, the concentrations of sugars and amino acids in embryo sac liquid were rapidly decreased. From the above-mentioned results, it seems more probable that the stop of dry matter accumulation in seeds should occur by the stop of assimilate unloading of seed coats. This may be regulated by ABA and so on.

油菜种子在成熟期停止生长以增加干重。结果表明，荚壁光合作用的停止并不是导致种子生长停止的原因。在本研究中，我们主要研究了种皮中同化物卸载的停止是否是导致种子生长停止的原因。当荚壁中脱落酸（ABA）浓度暂时升高时，荚壁和种子含水量开始下降。然后种皮和胚中ABA浓度暂时升高，胚中钙的积累停止。之后，胚及其他部位的钙转运到种皮中积累。同时，胚停止生长以增加干重。在此之前，胚囊液中糖和氨基酸的浓度迅速下降。从上述结果来看，种子中干物质积累的停止更可能是由于种皮同化物卸载的停止。这可能受到ABA等的调控。

项目成果

Nakanishi,T.,S.Inanaga and H.Kobayashi: "Non-destructive analysisi of rape plant pod by neutron radiography." Radiosotopes. 40. 126-128 (1991)

Nakanishi，T.，S.Inanaga 和 H.Kobayashi：“通过中子射线照相对油菜荚进行非破坏性分析。”

Nakanishi, T., S, Inanaga and H. kobayashi: "Non-destructive analysis of rape plant pod by neutron radiography." Radioisotopes. 40. 126-128 (1991)

Nakanishi, T., S, Inanaga 和 H. kobayashi：“通过中子射线照相技术对油菜荚果进行无损分析。”

稲永 忍他: "ナタネ種子における無機成分,油脂およびアブシジン酸の含有量の発育に伴う変化" 日本作物学会紀事.

Shinobu Inaga 等人：“油菜种子发育过程中无机成分、油和脱落酸含量的变化”日本作物学会杂志。

Inanaga, S. et al.: "Changes in inorganic matter contents, oil content and abscissic acid content of the seeds of rape plants." Japan. Jour. Crop Sci.

Inanaga, S. 等人：“油菜种子的无机物含量、油含量和脱落酸含量的变化。”

稲永忍: "ナタネ種子における物質蓄積過程" 日本作物学会紀事. 59. (1990)

Shinobu Inanaga：“油菜籽中的物质积累过程”，日本作物学会杂志，59。（1990）