Thermal sensitivity and niche plasticity of generalist and specialist leaf-endophytic bacteria in Mangrove Kandelia obovata DOI Creative Commons

Rajapakshalage Thashikala Nethmini,

Huaxian Zhao,

Lianghao Pan

et al.

Communications Biology, Journal Year: 2025, Volume and Issue: 8(1)

Published: Jan. 3, 2025

Leaf endospheres harbor diverse bacterial communities, comprising generalists and specialists, that profoundly affect ecosystem functions. However, the ecological dynamics of generalist specialist leaf-endophytic bacteria their responses to climate change remain poorly understood. We investigated diversity environmental within leaf endosphere mangroves across China. Our findings show a predominance specialists in mangrove endosphere. Temperature is key factor driving community dissimilarity both groups, yet it negatively influences alpha diversity. Soil nutritional factors, particularly phosphate for total organic carbon are critical shaping functional profiles. Interestingly, temperature has limited impact on Stochastic processes govern assembly altering β-nearest taxon indices as temperatures increase. indicate halophytic favors microbial niche specialization, due its unique microenvironment discrete niches, showing thermal sensitivity terms profile. This study provides insights into differentiation adaptation mechanisms endophytic microbes woody halophytes response perturbations. Thermal microbiome reveals distinct adaptations bacteria. Specialists dominate, while significantly drives diversity, impacting resilience.

Language: Английский

Biological nitrogen fixation and the role of soil diazotroph niche breadth in representative terrestrial ecosystems DOI
Wenbo Hu, Xiaomi Wang, Yongfeng Xu

et al.

Soil Biology and Biochemistry, Journal Year: 2023, Volume and Issue: 189, P. 109261 - 109261

Published: Nov. 30, 2023

Language: Английский

Citations

17
Distinct strategies of the habitat generalists and specialists in the Arctic sediments: Assembly processes, co-occurrence patterns, and environmental implications DOI

Jianxing Sun,

Hongbo Zhou,

Haina Cheng

et al.

Marine Pollution Bulletin, Journal Year: 2024, Volume and Issue: 205, P. 116603 - 116603

Published: June 16, 2024

Language: Английский

Citations

8
Bacterial abundant taxa exhibit stronger environmental adaption than rare taxa in the Arctic Ocean sediments DOI

Jianxing Sun,

Hongbo Zhou,

Haina Cheng

et al.

Marine Environmental Research, Journal Year: 2024, Volume and Issue: 199, P. 106624 - 106624

Published: June 26, 2024

Language: Английский

Citations

7
Vegetation as a key driver of the distribution of microbial generalists that in turn shapes the overall microbial community structure in the low Arctic tundra DOI Creative Commons
Shu-Kuan Wong,

Yingshun Cui,

Seong-Jun Chun

et al.

Environmental Microbiome, Journal Year: 2023, Volume and Issue: 18(1)

Published: May 10, 2023

Abstract Understanding the variability of microbial niches and their interaction with abiotic biotic factors in Arctic can provide valuable insights into adaptations to extreme environments. This study investigates structure diversity soil bacterial communities obtained from sites varying vegetation coverage biogeochemical properties low tundra explores how bacteria interact under different environmental parameters. Our findings reveal differences composition abundance among three niche breadths (specialists, common taxa, generalists). Co-occurrence network analysis revealed Rhizobiales Ktedonobacterales as keystone taxa that connect support other microbes habitat. Low-elevation indicators, such vascular plants moisture content, were correlated two out generalist modular hubs linked a large proportion generalists’ distribution (18%). Structural equation modeling distribution, which influenced remaining communities, was mainly regulated by well factors. These results suggest elevation-dependent directly influence community module formation through regulation distribution. Furthermore, generalists affected macroenvironment filtering, whereas specialists microenvironment filtering (species-engineered construction). In summary, our highlight strong top–down control exerted on turn shapes overall tundra.

Language: Английский

Citations

14
Driving mechanisms of soil bacterial α and β diversity under long-term nitrogen addition: Subtractive heterogenization based on the environment selection DOI Creative Commons

Zhu Yang,

Handan Dai,

Yongtao Huang

et al.

Geoderma, Journal Year: 2024, Volume and Issue: 445, P. 116886 - 116886

Published: April 15, 2024

Soil bacterial α and β diversity patterns under nitrogen (N) addition have been intensively examined, but γ remain largely unknown, especially, the mechanisms that concurrently control changes in α, elusive. Therefore, we formulated a conceptual framework simultaneously considers candidate drivers including ubiquitous species, rare community assembly processes to elucidate driving of N addition. The was tested by compiling sequence data seven studies published from January 1997 May 2022 following same analysis as our own two long-term multilevel experiments. We demonstrate subtractive heterogenization based on environment selection predicts That is, led decline species (subtractive processes) through low soil pH, promoted strength heterogeneous (heterogeneous via enhancing environmental heterogeneity, subsequently causing lower higher diversity. These results mean may lead significant loss around world. Together, these findings offer way predict responses ongoing atmospheric deposition.

Language: Английский

Citations

6
Specialist species of fungi and bacteria are more important than the intermediate and generalist species in near-urban agricultural soils DOI

Yulian Ren,

Wei Ge,

Chunbo Dong

et al.

Applied Soil Ecology, Journal Year: 2023, Volume and Issue: 188, P. 104894 - 104894

Published: March 27, 2023

Language: Английский

Citations

12
Intervention of rhamnolipid improves the rhizosphere microenvironment of cotton in desert saline lands DOI Creative Commons
Qing Liu, Chunlei Chen, Youhua Chen

et al.

Environmental Technology & Innovation, Journal Year: 2023, Volume and Issue: 32, P. 103378 - 103378

Published: Sept. 27, 2023

Rhamnolipids have been extensively studied for the remediation of soils contaminated with petroleum hydrocarbons. However, literature on effects rhamnolipids soil microenvironment is scarce. In this study, we adopted a drip irrigation technique to apply rhamnolipid solution planted cotton in saline desert area. The results showed that addition increased organic matter by 5.0–31.6% and reduced electrical conductivity 0.3–42.4%. Additionally, it improved nutrient conditions, reshaped composition function microbial community rhizosphere soil, ultimately promoted growth 3.3 – 9.0%. Simultaneously, enriched diversity bacterial community. Although fungal communities, optimized structure fungi. It worth noting higher concentrations may toxic fungi, mechanism which unknown. These findings shed new light understanding microorganisms provide direction sustainable agricultural production.

Language: Английский

Citations

11
Microbial eukaryote community succession over hundreds of years in Chinese lakes DOI Creative Commons
Yi Li, Hanxiao Zhang, Shouliang Huo

et al.

Ecological Indicators, Journal Year: 2024, Volume and Issue: 158, P. 111512 - 111512

Published: Jan. 1, 2024

Microbial eukaryotes play critical roles in maintaining the health and stability of lake ecosystems. Consequently, investigating spatial temporal evolution microbial eukaryotic community structures associated environmental drivers can inform water ecology studies protection efforts. In this study, sediment core samples were collected from Lakes Chaohu, Erhai, Lugu Fuxian China to reconstruct succession using DNA profiling methods. Mantel tests used identify key factors influencing explore mechanisms underlying ecological network changes. Statistical analyses revealed that diversity Chaohu Erhai shifted 2000s 1980s, respectively, while communities did not exhibit significant changes during study period, which may be due oligotrophic state these two lakes. Ciliophora Chlorophyta primary taxa four lakes with overall relative abundances 27.2 % 22.3 %, respectively. The diversities significantly correlated nutrient enrichment meteorological factors. Lastly, niche gap gradually overlapped after shifts Lake biased interactions strengthened. Overall, reveals impacts long-term human activities climate change on ecosystems multiple perspectives structure, network, findings will contribute integrate indicators freshwater monitoring future.

Language: Английский

Citations

4
Seasonal succession of microbes in different size-fractions and their modular structures determined by both macro- and micro-environmental filtering in dynamic coastal waters DOI Creative Commons
Seong-Jun Chun,

Yingshun Cui,

Seung Ho Baek

et al.

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 784, P. 147046 - 147046

Published: April 21, 2021

Microbes interact with each other in response to various environmental changes coastal marine ecosystems. To explore how the macroenvironment (environmental filtering) and species-engineered microenvironment (niche construction) affect ecological network of microbiome highly dynamic waters Korea, we analyzed modular structures microbial community identified interconnections different size fractions for a year. Fluctuations macroenvironment, such as temperature nutrient concentrations driven by seasonal changes, are major factors determining successive modules. Compared particle-associated (PA) microbes, free-living (FL) microbes seemed be more affected macroenvironmental filtering. Modules related nutrients were further divided into modules according lifestyles. In addition, large transient discharge Changjiang (Yangtze River) summer also formed distinct module, which was high ammonia concentration arising from phytoplankton degradation. belonging SAR11, SAR86, SAR116 clades, Flavobacteriaceae, MG IIa-L showed repeated temperature-related modules, while SAR202 clade, Marinimicrobia, DEV007 Arctic97B-4 Sva0996 groups displayed connections nutrient-related These 'skeleton'-forming created microenvironments, fine-tuning structures. Furthermore, they serve keystone species module stability linking interdependent partners within their own through universally beneficial metabolic activities. Therefore, could reinforce resilience communities under abiotic biotic perturbations waters. conclusion, both macro- micro-environmental filtering important succession

Language: Английский

Citations

27
Assembly Processes and Co-occurrence Patterns of Abundant and Rare Bacterial Community in the Eastern Indian Ocean DOI Creative Commons
Liuyang Li, Laxman Pujari, Chao Wu

et al.

Frontiers in Microbiology, Journal Year: 2021, Volume and Issue: 12

Published: Aug. 11, 2021

Microbial communities are composed of many rare species and a few abundant species. Considering the disproportionate importance for ecosystem functioning, it is important to understand mechanisms structuring components diverse community in response environmental changes. Here, we used 16S ribosomal RNA gene sequencing approach investigate bacterial diversity Eastern Indian Ocean (EIO) during monsoon intermonsoon. We employed phylogenetic null model network analysis evaluate assembly processes co-occurrence pattern microbial community. found that higher was detected intermonsoon with high temperature low Chlorophyll

Language: Английский

Citations

24