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首页> 外文期刊>Harmful Algae >Allelopathic interactions between the macroalga Hizikia fusiformis (Harvey) and the harmful blooms-forming dinoflagellate Karenia mikimotoi
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Allelopathic interactions between the macroalga Hizikia fusiformis (Harvey) and the harmful blooms-forming dinoflagellate Karenia mikimotoi

机译：大型藻类Hizikia fusiformis（Harvey）与有害水华形成的鞭毛鞭毛类植物Karenia mikimotoi之间的化感相互作用

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摘要

The effects of algal blooms on seaweeds have been rarely studied, although harmful algal blooms (HABs) are now normally regarded as worldwide incidents. In the present study, the effects of dense Karenia mikimotoi cells on the growth and photosynthesis of Hizikia fusiformis, a common and commercially cultivated macroalga in coastal waters of the East China Sea (ECS), were studied to understand the possible consequences when the mariculture encountered a dense harmful algal bloom. Furthermore, the counteraction of the latter on the growth and photosynthetic activities of K. mikimotoi was determined to evaluate the contribution of H. fusiformis commercial cultivation to environmental improvements. The results showed that the chlorophyll a (Chl a) contents, maximal photochemical efficiency (F-v/F-m) and relative electron transfer rate (rETR) of gas vesicles (specialized leaves), adult and young receptacles of H. fusiformis were all significantly (P < 0.05) inhibited compared with the mono cultured ones. When compared with mono-cultured H. fusiformis (without K mikimotoi), the Chl a contents in gas vesicles, adult and young receptacles decreased by 20.6%, 17.6% and 33.2% within 2 weeks. Correspondingly, the F-v/F-m decreased by 7.9%, 37.4% and 43.7%; the apparent photosynthetic efficiency (a) decreased by 9.4%, 47.1% and 48.3%; and rETR decreased by 19.5%, 52.6% and 68.2%, respectively. The Chl a concentration of the mono-cultured K mikimotoi (without H. fusiformis) increased to 2247.97 mu gl(-1) from 958.11 mu gl(-1) within 14 d. Those of the co-cultivated ones (with H. fusiformis), however, increased to 1591.31 mu gl(-1) on the 8th day and then decreased rapidly to 254.99 (+/- 37.73) mu gl(-1) after the next 6 days. Furthermore, compared with the mono-cultured K mikimotoi cells, the F-v/F-m alpha and rETR(max) of co-cultivated ones decreased by 9.4%, 36.3% and 30.6%, respectively. The results indicated that the mature sporophytes of H. fusiformis were resistant to dense K. mikimotoi blooms and this resistance was organ dependent as: gas vesicle> adult receptacles > young receptacles. On the other hand, commercial mariculture of H. fusiformis demonstrated the potential of preventing the occurrence of algal blooms. (C) 2017 Elsevier B.V. All rights reserved.
机译：尽管现在通常将有害藻华（HAB）视为世界范围的事件，但很少研究藻华对海藻的影响。在本研究中，研究了密集的三叶卡伦氏菌细胞对东海常见的商业化养殖大型藻类Hizikia fusiformis的生长和光合作用的影响，以了解遇到海水养殖时可能产生的后果浓密的有害藻华。此外，确定了后者对kiki mikimotoi的生长和光合活性的反作用，以评价fusiformis商业化种植对改善环境的贡献。结果表明，气荚膜囊泡（特种叶片），梭形芽孢杆菌的成年和幼年容器中的叶绿素a（Chl a）含量，最大光化学效率（Fv / Fm）和相对电子传递率（rETR）均显着（P <0.05）与单培养相比受到抑制。与单培养的H. fusiformis（无K. mikimotoi）相比，气囊，成年和年轻容器中的Chl a含量在两周内下降了20.6％，17.6％和33.2％。相应地，F-v / F-m分别降低了7.9％，37.4％和43.7％；表观光合效率（a）分别降低了9.4％，47.1％和48.3％； rETR分别下降了19.5％，52.6％和68.2％。 14 d内单培养的K mikimotoi（没有fusiformis）的Chl a浓度从958.11 mu gl（-1）增加到2247.97 mu gl（-1）。然而，共培养的（与梭状芽孢杆菌）在第8天增加到1591.31μgl（-1），然后在第二天后迅速下降到254.99（+/- 37.73）μgl（-1）。 6天此外，与单培养的K mikimotoi细胞相比，共培养的F-v / F-m alpha和rETR（max）分别降低了9.4％，36.3％和30.6％。结果表明，梭形芽孢杆菌的成熟孢子体对浓密的K. mikimotoi绽放有抗性，并且这种抗性取决于器官：气体囊泡>成年贮器>年轻贮器。另一方面，商业化的梭状芽孢杆菌养殖证明了防止藻华发生的潜力。 （C）2017 Elsevier B.V.保留所有权利。

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  • 来源
    《Harmful Algae》 |2017年第5期|19-26|共8页
  • 作者

    Ma Zengling; Wu Mingjiang; Lin Lidong; Thring Ronald W.; Yu Hengguo; Zhang Xu; Zhao Min;

  • 作者单位

    Wenzhou Univ, Zhejiang Prov Key Lab Subtrop Water Environm & Ma, Wenzhou 325035, Peoples R China;

    Wenzhou Univ, Zhejiang Prov Key Lab Subtrop Water Environm & Ma, Wenzhou 325035, Peoples R China;

    Dongtou Fisheries Sci & Technol Res Inst, Dongtou 325700, Wenzhou, Peoples R China;

    Univ Northern British Columbia, Environm Sci & Engn, Prince George, BC V2N 4Z9, Canada;

    Wenzhou Univ, Zhejiang Prov Key Lab Subtrop Water Environm & Ma, Wenzhou 325035, Peoples R China;

    Wenzhou Univ, Zhejiang Prov Key Lab Subtrop Water Environm & Ma, Wenzhou 325035, Peoples R China;

    Wenzhou Univ, Zhejiang Prov Key Lab Subtrop Water Environm & Ma, Wenzhou 325035, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Gas vesicle; Growth; Hizikia fusiformis; Interaction; Karenia mikimotoi; Photosynthesis; Receptacle;

    机译：气泡;生长;羊茅（Hizikia fusiformis）;相互作用;三本草（Karenia mikimotoi）;光合作用;容器;

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