The study on the influencing factors of Chaetoceros curvisetus allelopathic effect on Skeletonema costatum and the primary research on the properties of Chaetoceros curvisetus allelochemical

Zhang Yiwen; Wang Jiangtao; Tan Liju

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Zhang Yiwen, Wang Jiangtao, Tan Liju. The study on the influencing factors of Chaetoceros curvisetus allelopathic effect on Skeletonema costatum and the primary research on the properties of Chaetoceros curvisetus allelochemical[J]. Haiyang Xuebao, 2014, 36(2): 123-129.

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Zhang Yiwen, Wang Jiangtao, Tan Liju. The study on the influencing factors of Chaetoceros curvisetus allelopathic effect on Skeletonema costatum and the primary research on the properties of Chaetoceros curvisetus allelochemical[J]. Haiyang Xuebao, 2014, 36(2): 123-129.

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The study on the influencing factors of Chaetoceros curvisetus allelopathic effect on Skeletonema costatum and the primary research on the properties of Chaetoceros curvisetus allelochemical

Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China

Received Date: 2012-09-06

Abstract

Abstract

On the basis of the fact that Chaetoceros curvisetus showed allelopathic effect on Skeletonema costatum, a series of experiments, including algal cultures and compounds extraction, were carried out to research the properties, influence factors, degradation characteristics and structure of C. curvisetus allelochemical. The results indicated that allelopathic effect of C. curvisetus was related to the growth phase, and the C. curvisetus filtrates in exponential phase caused the inhibition on the growth of S. costatum than that of declining phase filtrates. Chaetoceros curvisetus allelochemical remain stable under 50℃ temperature and degraded as time went on attributed on light and bacteria, and bacteria contributed more. Furthermore, the ethyl acetate extraction of C. curvisetus filtrate showed significant allelopathic effect and the wavelength of characteristic absorption for the growth inhibitor was 255-260 nm. Consequently, the effect ingredient was dissolved by ethyl acetate. In addition, the allelochemical of C. curvisetus was supported to be benzene derivatives whose decomposition temperature was more than 50℃ and could be degraded by light and bacteria.
- allelochemical,
- Chaetoceros curvisetus,
- Skeletonema costatum

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References(26)

References

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