The Role of Cyanobacterial External Layers in Mass Transfer: Evidence from Temperature Shock Experiments by Noninvasive Microtest Technology
文献类型：期刊论文
| 作者 | Xiao, Yan ; Liu, Lingxin; Li, Zhe; Cheng, Yuran
|
| 刊名 | MICROORGANISMS
 |
| 出版日期 | 2020-06-01 |
| 卷号 | 8期号:6页码:13 |
| 关键词 | cyanobacteria external layers mass transfer temperature shock noninvasive microtest technology (NMT) |
| DOI | 10.3390/microorganisms8060861 |
| 通讯作者 | Li, Zhe(lizhe@cigit.ac.cn) |
| 英文摘要 | Groundwork on cyanobacterial external layers is crucial for an improved understanding of the persistent dominance of cyanobacteria in freshwaters. In this study, the role of two morphotypes of external layers inMicrocystisandNostocin mass transfer and instantaneous temperature shock were explored by noninvasive microtest technology (NMT) after a series of pretreatments, to obtain the external layers retained or stripped samples. The results showed no statistical influence on photosynthetic activity between retained and stripped samples in bothMicrocystisandNostoc. External-layer-retaining strains had higher net O(2)effluxes than stripped strains. Moreover, the net NH(4)(+)influx was significantly higher for the sheath retainingNostocthan for the stripped sample, indicating that external layers might be an important feature driving mass transfer in cyanobacteria. However, the role of slime in NH(4)(+)absorption was limited compared with that of sheath. In addition, external-layer-retaining strains exhibited a longer response time to instantaneous temperature shock, greater net O(2)effluxes at a 4 degrees C shock and lower net O(2)influx at a 35 degrees C shock, which were interpreted as reflecting a tolerance to temperature fluctuation over short time scales via a buffer function of external layers to stabilize cell activity, ameliorating the efficiency of photosynthesis and respiration. These results advance current knowledge regarding the external layers, especially the dense sheath, involved in the mass transfer in cyanobacteria, and provide new clues concerning the adaptive strategies of cyanobacteria under global climate changes. |
| 资助项目 | National Natural Science Foundation of China[51779240] ; National Natural Science Foundation of China[51979262] ; National Natural Science Foundation of China[51861125204] ; Youth Innovation Promotion Association Program - Chinese Academy of Sciences |
| WOS研究方向 | Microbiology |
| 语种 | 英语 |
| WOS记录号 | WOS:000554616400001 |
| 出版者 | MDPI |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/11542]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Li, Zhe |
| 作者单位 | Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, CAS Key Lab Reservoir Water Environm, 266 Fangzheng Ave,Shuitu Hitech Ind Pk, Chongqing 400714, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiao, Yan,Liu, Lingxin,Li, Zhe,et al. The Role of Cyanobacterial External Layers in Mass Transfer: Evidence from Temperature Shock Experiments by Noninvasive Microtest Technology[J]. MICROORGANISMS,2020,8(6):13. |
| APA | Xiao, Yan,Liu, Lingxin,Li, Zhe,&Cheng, Yuran.(2020).The Role of Cyanobacterial External Layers in Mass Transfer: Evidence from Temperature Shock Experiments by Noninvasive Microtest Technology.MICROORGANISMS,8(6),13. |
| MLA | Xiao, Yan,et al."The Role of Cyanobacterial External Layers in Mass Transfer: Evidence from Temperature Shock Experiments by Noninvasive Microtest Technology".MICROORGANISMS 8.6(2020):13. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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