Exudation of an allelopathic substance lepidimoide from seeds during germination

Kosumi Yamada, Seiji Kosemura, Shosuke Yamamura, Koji Hasegawa

研究成果: Article査読

10 被引用数 (Scopus)


Lepidimoide promotes growth of the cockscomb hypocotyl. It is exuded from germinating seeds of various plant species into their culture environment. The mode of exudation of lepidimoide from seeds into the culture solution, using sunflower and buckwheat seeds, was studied in relation to seed germination. In the dry seeds, about 75% of the lepidimoide was found in the seed coat and about 25% in the kernel. Upon water imbibition it was released into the culture solution. However, the quantity of lepidimoide detected in the seed exudate was more than three times the total amount in dry and imbibed seeds, suggesting that lepidimoide was also produced de novo in the seeds and subsequently released. When seed coats or kernels were imbibed separately, the quantity of lepidimoide released from the seed coats into the culture solution was much the same as that in the dry seeds, but the amount of lepidimoide detected in the exudate of kernels was about 16 times that in the dry kernels. These results suggest that lepidimoide, already present in dry seeds, as well as that newly produced in the kernels following imbibition, was released into the environment.

ジャーナルPlant Growth Regulation
出版ステータスPublished - 1997

ASJC Scopus subject areas

  • 生理学
  • 農業および作物学
  • 植物科学


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