Light limitation inducing overcompensatory growth of cyanobacteria and function of serine/threonine kinase (STK) genes involved

文献类型: 外文期刊

第一作者: Dai, Wei

作者: Dai, Wei;Bi, Xiangdong;Wang, Xueying;Dong, Shaojie;Lv, Dong;Zhang, Shulin;Zhang, Dajuan;Wang, Na;Chen, Gao;Zhong, Huairong;Chen, Gao;Zhong, Huairong

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关键词: compensatory growth; cyanobacteria; light limitation; serine; threonine kinase; spkD

期刊名称:WATER SCIENCE AND TECHNOLOGY ( 影响因子:1.638; 五年影响因子:1.632 )

ISSN: 0273-1223

年卷期: 2021 年 83 卷 6 期

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收录情况: SCI

摘要: The rapid overcompensatory growth that appears when cyanobacteria are supplied with adequate resources after a period of resource deprivation might contribute to the occurrence of cyanobacterial blooms. We investigated the changing characteristics of overcompensatory growth and serine/threonine kinase (STK) genes expression of cyanobacterium Microcystis aeruginosa in response to light limitation. The results showed M. aeruginosa exhibited overcompensatory growth for 2 days after light recovery, during which the increase in growth was inversely related to light intensity. Expression of STK genes, such as spkD, was upregulated significantly at 0.5-4 h after light recovery (P < 0.05). To investigate the function of STK genes in the overcompensatory growth, M. aeruginosa spkD was heterologously expressed in Synechocystis. Transgenic Synechocystis exhibited greater and longer overcompensatory growth than wild-type Synechocystis after light recovery. Relative expression levels of STK genes in transgenic Synechocystis were significantly higher than those in wild-type Synechocystis at 24 h of light recovery (P < 0.05). Heterologous expression of Microcystis spkD might stimulate overcompensatory growth of Synechocystis by affecting its STK gene expression.

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[1]Light limitation inducing overcompensatory growth of cyanobacteria and function of serine/threonine kinase (STK) genes involved. Dai, Wei,Bi, Xiangdong,Wang, Xueying,Dong, Shaojie,Lv, Dong,Zhang, Shulin,Zhang, Dajuan,Wang, Na,Chen, Gao,Zhong, Huairong,Chen, Gao,Zhong, Huairong. 2021

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