Study on Brassinosteroid-Enhanced Sugar Accumulation in Cucumber Epicotyls

Japanese Journal of Crop Science

Naoko NAKAJIMA¹  Susumu TOYAMA¹ 

关键词: Brassinosteroid;    エピブラシノライド;    Cucumber;    キュウリ;    Elongation;    上胚軸;    Epibrassinolide;    伸長;    Epicotyl;    糖蓄積;    Sugar accumulation;    ブラシノステロイド;   

DOI  :  10.1626/jcs.64.616

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Exogenous epibrassinolide (EBR) treatment promoted elongation of cucumber epicotyls and at the same time, enhanced sugar accumulation in the epicotyls. This accumulation was concomitant with the elongation. Accordingly, it was suggested that the sugar accumulation is closely related to the promotion of elongation. Furthermore, the components of the soluble sugar were researched. By EBR treatment, the amount of glucose was remarkably increased, although sucrose was not affected. The amount and transport of 14C-assimilates in EBR-treated cucumber were analyzed. EBR treatment had no effect on the amount of 14CO2 assimilation but they promoted the transport of 14C-photosynthates to epicotyls. In addition, the amount of 14C-labeled glucose transported to epicotyl was remarkably increased. In conclusion, these changes enhanced by EBR seem to be a cause of glucose accumulatilon in cucumber epicotyls.

【 授权许可】

Unknown