{"title":"微生物生命策略介导的碳代谢差异解释了倒花菜和无瓣海桑在碳固存方面的差异","authors":"Fuyuan Duan , Fengxiao Tan , Xuming Zhao , Hui Feng , Jiakai Wang , Hao Peng , Nannan Zhang , Yelin Huang","doi":"10.1016/j.fecs.2025.100341","DOIUrl":null,"url":null,"abstract":"<div><div>Soil organic carbon (SOC) plays a crucial role in mangrove blue carbon formation, yet the differences in microbe-mediated underlying SOC sequestration between introduced and native mangroves remain unclear. Here, we compared the SOC pool, including recalcitrant organic carbon (ROC) and labile carbon pools, as well as three residual carbon sources (amino sugars, lignin phenols, and lipids) in sediments between mangroves of introduced <em>Sonneratia apetala</em> and native <em>Kandelia obovata</em>, and further connected them with microbial life strategies and C metabolism capability. The results showed that SOC accumulation in <em>S. apetala</em> (SA) sediment was about 30%–50% of that in <em>K. obovata</em> (KO) sediment. ROC was the dominant form of SOC in long-term sequestration (76%–83%), while lignin phenols, amino sugars, and lipids were important sources of ROC. In <em>S. apetala</em> sediments, the ROC content was positively correlated with amino sugars, resulting from the more <em>r</em>-strategist microbes that can rapidly convert plant-derived carbon into microbial biomass, which is subsequently transformed into microbial necromass. In contrast, in <em>K. obovata</em> sediments, ROC content showed a stronger positive correlation with the concentrations of lignin phenols and lipids. More <em>K</em>-strategist fungi in the topsoil of <em>K. obovata</em> increased enzyme activities, while more <em>K</em>-strategist bacteria in the subsoil enhanced carbon utilization capacity, thereby increasing lignin phenols and lipids from plant residues in both soil layers. Meanwhile, higher Ca<sup>2+</sup> concentrations in <em>K. obovata</em> sediments protected three residual carbons from further microbe decomposition. This study provides valuable insights into the molecular mechanisms of SOC sequestration mediated by microbial life strategies in mangrove ecosystems.</div></div>","PeriodicalId":54270,"journal":{"name":"Forest Ecosystems","volume":"14 ","pages":"Article 100341"},"PeriodicalIF":3.8000,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Microbial life strategies-mediated differences in carbon metabolism explain the variation in SOC sequestration between Kandelia obovata and Sonneratia apetala\",\"authors\":\"Fuyuan Duan , Fengxiao Tan , Xuming Zhao , Hui Feng , Jiakai Wang , Hao Peng , Nannan Zhang , Yelin Huang\",\"doi\":\"10.1016/j.fecs.2025.100341\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Soil organic carbon (SOC) plays a crucial role in mangrove blue carbon formation, yet the differences in microbe-mediated underlying SOC sequestration between introduced and native mangroves remain unclear. Here, we compared the SOC pool, including recalcitrant organic carbon (ROC) and labile carbon pools, as well as three residual carbon sources (amino sugars, lignin phenols, and lipids) in sediments between mangroves of introduced <em>Sonneratia apetala</em> and native <em>Kandelia obovata</em>, and further connected them with microbial life strategies and C metabolism capability. The results showed that SOC accumulation in <em>S. apetala</em> (SA) sediment was about 30%–50% of that in <em>K. obovata</em> (KO) sediment. ROC was the dominant form of SOC in long-term sequestration (76%–83%), while lignin phenols, amino sugars, and lipids were important sources of ROC. In <em>S. apetala</em> sediments, the ROC content was positively correlated with amino sugars, resulting from the more <em>r</em>-strategist microbes that can rapidly convert plant-derived carbon into microbial biomass, which is subsequently transformed into microbial necromass. In contrast, in <em>K. obovata</em> sediments, ROC content showed a stronger positive correlation with the concentrations of lignin phenols and lipids. More <em>K</em>-strategist fungi in the topsoil of <em>K. obovata</em> increased enzyme activities, while more <em>K</em>-strategist bacteria in the subsoil enhanced carbon utilization capacity, thereby increasing lignin phenols and lipids from plant residues in both soil layers. Meanwhile, higher Ca<sup>2+</sup> concentrations in <em>K. obovata</em> sediments protected three residual carbons from further microbe decomposition. This study provides valuable insights into the molecular mechanisms of SOC sequestration mediated by microbial life strategies in mangrove ecosystems.</div></div>\",\"PeriodicalId\":54270,\"journal\":{\"name\":\"Forest Ecosystems\",\"volume\":\"14 \",\"pages\":\"Article 100341\"},\"PeriodicalIF\":3.8000,\"publicationDate\":\"2025-05-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Forest Ecosystems\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2197562025000508\",\"RegionNum\":1,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"FORESTRY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Forest Ecosystems","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2197562025000508","RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"FORESTRY","Score":null,"Total":0}
Microbial life strategies-mediated differences in carbon metabolism explain the variation in SOC sequestration between Kandelia obovata and Sonneratia apetala
Soil organic carbon (SOC) plays a crucial role in mangrove blue carbon formation, yet the differences in microbe-mediated underlying SOC sequestration between introduced and native mangroves remain unclear. Here, we compared the SOC pool, including recalcitrant organic carbon (ROC) and labile carbon pools, as well as three residual carbon sources (amino sugars, lignin phenols, and lipids) in sediments between mangroves of introduced Sonneratia apetala and native Kandelia obovata, and further connected them with microbial life strategies and C metabolism capability. The results showed that SOC accumulation in S. apetala (SA) sediment was about 30%–50% of that in K. obovata (KO) sediment. ROC was the dominant form of SOC in long-term sequestration (76%–83%), while lignin phenols, amino sugars, and lipids were important sources of ROC. In S. apetala sediments, the ROC content was positively correlated with amino sugars, resulting from the more r-strategist microbes that can rapidly convert plant-derived carbon into microbial biomass, which is subsequently transformed into microbial necromass. In contrast, in K. obovata sediments, ROC content showed a stronger positive correlation with the concentrations of lignin phenols and lipids. More K-strategist fungi in the topsoil of K. obovata increased enzyme activities, while more K-strategist bacteria in the subsoil enhanced carbon utilization capacity, thereby increasing lignin phenols and lipids from plant residues in both soil layers. Meanwhile, higher Ca2+ concentrations in K. obovata sediments protected three residual carbons from further microbe decomposition. This study provides valuable insights into the molecular mechanisms of SOC sequestration mediated by microbial life strategies in mangrove ecosystems.
Forest EcosystemsEnvironmental Science-Nature and Landscape Conservation
CiteScore
7.10
自引率
4.90%
发文量
1115
审稿时长
22 days
期刊介绍:
Forest Ecosystems is an open access, peer-reviewed journal publishing scientific communications from any discipline that can provide interesting contributions about the structure and dynamics of "natural" and "domesticated" forest ecosystems, and their services to people. The journal welcomes innovative science as well as application oriented work that will enhance understanding of woody plant communities. Very specific studies are welcome if they are part of a thematic series that provides some holistic perspective that is of general interest.