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Biological activity of a red-tide alga - A-tamarense under co-cultured condition with bacteria
Su, JQ; Yu, ZM; Tian, Y; Song, XX; Hong, HS; Zheng, TL
2005
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
ISSN1001-0742
Volume17Issue:6Pages:1047-1050
SubtypeArticle
AbstractThe relationship between Alexandrium tamarense (Lebour) Balech, one of red-tide alga, and two strains of marine bacteria, Bacillius megaterium(S-7) and B. halmapulus(S-10) isolated from Xiamen Western Sea, was investigated by evaluating the growth state of A. tamarense and the variation of P-glucosidase activity in co-culture system. The results showed the growth and multiplication of the alga were related with the concentration, genus speciality of the bacteria, and growth stage of the alga itself. The growth of A. tamarense was obviously inhibited by S7 and S, at high concentration. Either inhibition or promotion contributed much more clearly in earlier than in later stage of the growth of the alga. Furthermore, there was a roughly similar variation trend of the activity of extra-cellular enzyme, beta-glucosidase, in the water of the separately co-cultured bacteria S-7 and S-10 with the alga. The beta-glucosidase activity (beta-GlcA) rapidly increased during the later algal growth accompanying the increase of the lysis of the alga cells. The obvious inhibition of A. tamarense by marine bacteria at high concentration and evident increase of beta-GlcA in co-colture system would help us in better understanding the relationship between red-tide alga and bacteria, and also enlightened us the possible use of bacteria in the bio-control of red-tide.; The relationship between Alexandrium tamarense (Lebour) Balech, one of red-tide alga, and two strains of marine bacteria, Bacillius megaterium(S-7) and B. halmapulus(S-10) isolated from Xiamen Western Sea, was investigated by evaluating the growth state of A. tamarense and the variation of P-glucosidase activity in co-culture system. The results showed the growth and multiplication of the alga were related with the concentration, genus speciality of the bacteria, and growth stage of the alga itself. The growth of A. tamarense was obviously inhibited by S7 and S, at high concentration. Either inhibition or promotion contributed much more clearly in earlier than in later stage of the growth of the alga. Furthermore, there was a roughly similar variation trend of the activity of extra-cellular enzyme, beta-glucosidase, in the water of the separately co-cultured bacteria S-7 and S-10 with the alga. The beta-glucosidase activity (beta-GlcA) rapidly increased during the later algal growth accompanying the increase of the lysis of the alga cells. The obvious inhibition of A. tamarense by marine bacteria at high concentration and evident increase of beta-GlcA in co-colture system would help us in better understanding the relationship between red-tide alga and bacteria, and also enlightened us the possible use of bacteria in the bio-control of red-tide.
KeywordAlexandrium Tamarense Beta-glucosidase Bacteria
Subject AreaEnvironmental Sciences
Indexed BySCI
Language英语
WOS IDWOS:000233402200036
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/2694
Collection海洋生态与环境科学重点实验室
Affiliation1.Xiamen Univ, Sch Life Sci, Xiamen 361005, Peoples R China
2.Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen 361005, Peoples R China
3.Chinese Acad Sci, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
Recommended Citation
GB/T 7714
Su, JQ,Yu, ZM,Tian, Y,et al. Biological activity of a red-tide alga - A-tamarense under co-cultured condition with bacteria[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2005,17(6):1047-1050.
APA Su, JQ,Yu, ZM,Tian, Y,Song, XX,Hong, HS,&Zheng, TL.(2005).Biological activity of a red-tide alga - A-tamarense under co-cultured condition with bacteria.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,17(6),1047-1050.
MLA Su, JQ,et al."Biological activity of a red-tide alga - A-tamarense under co-cultured condition with bacteria".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 17.6(2005):1047-1050.
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