%刘a，麦东曦%麦志茂%孙翠词%周丽茜%廖燕%廖妍%黄慧%王友韶%程友韶%程友韶%郝%D 2022 %J海洋科学前沿%C %F %G English %K红树林，红树林分带，胞外聚合物质，有机碳，微生物群落%Q %R 10.3389/fmar .2022.967767 %W %L %M %P %7 %8 2022- 11月17 %9原创研究%+王友韶，南海海洋研究所热带海洋国家重点实验室，中国科学院，yswang@scsio.ac.cn +王友绍，中国科学院南海海洋研究所热带海洋生物资源与生态重点实验室，yswang@scsio.ac.cn +王友绍，南方海洋科学与工程广东实验室(广州)，中国，yswang@scsio.ac.cn +王友绍，大亚湾海洋生物研究站，中国科学院，yswang@scsio.ac.cn %+郝诚，中国科学院南海海洋研究所热带海洋国家重点实验室，中国科学院南海海洋研究所热带海洋生物资源与生态重点实验室，中国科学院南海海洋研究所，yswang@scsio.ac.cn %+郝诚，南方海洋科学与工程广东实验室(广州)，yswang@scsio.ac.cn %# %!红树林中微生物胞外聚合物质%* %< %T细胞外聚合物质和土壤有机碳在红树林沿连续潮汐梯度分带中的动态变化%U //www.gosselinpr.com/articles/10.3389/fmars.2022.967767 %V 9% X红树林在蓝碳储存方面的重要性已被广泛报道。然而，在红树林生态系统中，微生物胞外聚合物质(EPS)对碳库的潜在贡献仍然知之甚少。因此，本研究选择高桥红树林自然保护区为研究对象，研究微生物EPS与沉积物有机碳的关系。采用树脂提取法、傅立叶红外光谱法(FTIR)和16S高通量测序法测定了不同红树林群落中EPS和细菌类群的变化。EPS和EPS- c均随红树林向海向陆的分区而显著增加，与EPS亚组分(胶体EPS和结合EPS)和组分(细胞外蛋白和多糖)无关。EPS和EPS- c均与土壤有机碳呈显著正相关。本文进一步表明，表层沉积物中EPS-C占TOC的1.84~10.69%。 Multiple functional groups (e.g., O-H, N-H, and C=O), which may provide ligands for particle adsorption and complexation, were identified by FTIR. Consistent with the ascend of EPS with mangrove zonation from seaward to landward, the highest transmittance intensity for all functional groups was consistently exhibited in EPS isolated from landward Rhizophoraceae forest. In addition, the present data also indicated an interesting positive linkage between EPS and the abundance of some specific bacterial taxa, such as Rhizobiales, Corynebacteriales, and Gaiellales. In summary, this study claims the importance of EPS in the carbon pool in mangrove ecosystems. The present study may provide a better understanding of the functions of mangroves in carbon stocks.