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

Microbial generalist or specialist: Intraspecific variation and dormancy potential matter DOI
Qicheng Xu,

Gongwen Luo,

Junjie Guo

et al.

Molecular Ecology, Journal Year: 2021, Volume and Issue: 31(1), P. 161 - 173

Published: Oct. 9, 2021

Abstract Microbial generalists and specialists coexist in the soil environment while having distinctive impacts on microbial community dynamics. In ecology, underlying mechanisms as to why a species is generalist or specialist remain ambiguous. Herein, we collected soils across national scale identified bacterial according niche breadth at level (OTU level), single‐nucleotide differences each were measured investigate intraspecific variation (at zero‐radius OTU level). Compared with that of specialists, was much higher, which ensured their wider lower variability. The higher asynchrony different preferences conspecific individuals dormancy potential within further contributed stability varying environments. Besides, less controlled by environmental filtering, indicated stronger signature stochastic processes assembly, had diversification transition rates allowed them adapt changes greater extent than specialists. Overall, this study provides new comprehensive understanding rules assembly evolutionary roles It also highlights importance species.

Language: Английский

Citations

70
Distinct strategies of the habitat generalists and specialists in sediment of Tibetan lakes DOI
Yan Qi,

Yongqin Liu,

Anyi Hu

et al.

Environmental Microbiology, Journal Year: 2022, Volume and Issue: 24(9), P. 4153 - 4166

Published: May 20, 2022

Summary Microbial metacommunities normally comprise generalists and specialists. Uncovering the mechanisms underlying diversity patterns of these two sub‐communities is crucial for aquatic biodiversity maintenance. However, little known about ecological assembly processes co‐occurrence habitat specialists across large spatial scales in plateau lake sediments, particularly regarding their environmental adaptations. Here, we investigated sediment Tibetan lakes role stability metacommunity network. Our results showed that exhibited broader thresholds closer phylogenetic clustering than specialist counterparts. In contrast, stronger signals preferences compared with generalists. Stochastic dominated generalist (63.2%) (81.3%) community assembly. Sediment pH was major factor mediating balance between stochastic deterministic addition, as revealed by network analysis, played a greater maintaining The insights gained from this study can be helpful to understand maintenance microbial lakes.

Language: Английский

Citations

55
Enhanced remediation of oil-contaminated intertidal sediment by bacterial consortium of petroleum degraders and biosurfactant producers DOI
Hanghai Zhou, Qing Liu, Lijia Jiang

et al.

Chemosphere, Journal Year: 2023, Volume and Issue: 330, P. 138763 - 138763

Published: April 22, 2023

Language: Английский

Citations

24
The application of biochar and organic fertilizer substitution regulates the diversities of habitat specialist bacterial communities within soil aggregates in proso millet farmland DOI Creative Commons

Lixin Tian,

Yawei Wang,

De Cai Jin

et al.

Biochar, Journal Year: 2025, Volume and Issue: 7(1)

Published: Jan. 2, 2025

Abstract Biochar and organic fertilizer substitution have been utilized to improve crop yields promote sustainable agricultural development. However, few studies focused on how biochar regulate the diversities of bacterial meta-communities sub-communities (i.e., habitat specialists generalists) within soil aggregates Loess Plateau. A field experiment, containing six treatments, namely no (CK), plus 10 4 kg ha −1 (CK + B), traditional N (TF, 150 ), (TF replacing (OF), (OF was adopted explore influences size distribution, nutrient levels, extracellular enzymatic stoichiometry, meta-community sub-community diversities, structures, ecological networks, assembly processes bulk soil, large macro-aggregates (> 2 mm), small (0.25–2 micro-aggregates (< 0.25 mm) in proso millet farmland. Results showed that compared CK B treatment, OF treatment enhanced distribution while decreasing micro-aggregates. also markedly elevated contents total nitrogen (TN), carbon (SOC), nitrate (NO 3 − -N), ammonium (NH as well activities C-, N-, P-acquiring enzymes, limitation, reduced limitation macro-aggregates. Compared treatments significantly increased observed OTUs specialist communities macroaggregates, having effect generalist communities. The impacts additions, aggregates, community structure composition were greater than those generalists. RDA analysis NH -N content had a significant influence three aggregates. Ecological network indicated whole complexity stability treatment. Meanwhile, with amendment more complex tighter without biochar. Null-model regimes rarely affected mainly determined by stochastic process. These observations offer theoretical basis for understanding intrinsic relationships between microbial regulated fertilization semi-arid region.

Language: Английский

Citations

1
Cryptophyte diversity and assembly mechanisms reveal ecological discontinuities in a river-estuary-coast continuum DOI
Changyun Wang, Yao Liu, Zhuyin Tong

et al.

Ecological Indicators, Journal Year: 2025, Volume and Issue: 171, P. 113114 - 113114

Published: Jan. 25, 2025

Language: Английский

Citations

1
Assembly, network and functional compensation of specialists and generalists in poplar rhizosphere under salt stress DOI Creative Commons

Yao Du,

Lei Zhang, Yan Yang

et al.

npj Biofilms and Microbiomes, Journal Year: 2025, Volume and Issue: 11(1)

Published: Feb. 13, 2025

Language: Английский

Citations

1
Temporal dynamics and potential driving mechanisms of bacterioplankton communities in lake ecosystems: Insights from water diversion events DOI
Yunfeng Wang, Mingjian Liu, Qingyun Yan

et al.

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 133335 - 133335

Published: April 1, 2025

Language: Английский

Citations

1
Distinct Functions and Assembly Mechanisms of Soil Abundant and Rare Bacterial Taxa Under Increasing Pyrene Stresses DOI Creative Commons
Yuzhu Dong, Shanghua Wu,

Ye Deng

et al.

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

Published: July 2, 2021

Elucidating the relative importance of species interactions and assembly mechanisms in regulating bacterial community structure functions, especially abundant rare subcommunities, is crucial for understanding influence environmental disturbance shaping ecological functions. However, little known about how polycyclic aromatic hydrocarbon (PAH) stress alters stability functions taxa. Here, we performed soil microcosms with gradient pyrene stresses as a model ecosystem to explore roles determining structures subcommunities. The dose–effect significantly altered compositions With increasing stresses, diversity increased while it decreased rare. Importantly, taxa exhibited much broader niche width adaptivity than rare, contributing more biodegradation, whereas played key role improving subcommunity resistance stress, potentially promoting persistence stability. Furthermore, co-occurrence network analysis revealed that inclined occupy core central position adaptation stresses. Stochastic processes rather subcommunity. Overall, these findings extend our response pollution laying leading theoretical basis are targets biostimulation remediation.

Language: Английский

Citations

47
Irreversible community difference between bacterioplankton generalists and specialists in response to lake dredging DOI
Yuyi Yang, Weihong Zhang, Wenzhi Liu

et al.

Water Research, Journal Year: 2023, Volume and Issue: 243, P. 120344 - 120344

Published: July 13, 2023

Language: Английский

Citations

20
Patterns of bacterial generalists and specialists in lakes and reservoirs along a latitudinal gradient DOI Open Access
Jun Zuo, Lemian Liu, Peng Xiao

et al.

Global Ecology and Biogeography, Journal Year: 2023, Volume and Issue: 32(11), P. 2017 - 2032

Published: Sept. 6, 2023

Abstract Aim The geographical distribution of bacteria is an important, but poorly understood, topic in microbial ecology. A major question how broadly distributed generalist taxa, and limitedly specialist vary across a latitudinal gradient freshwater ecosystems. We predict that: (a) generalists specialists exhibit diversity with different patterns; (b) their community assemblies are mainly driven by stochastic processes; (c) coexist through niche differences, while fitness differences. Location Sixty lakes reservoirs China, ranging from 18° N to 50° N. Time Period July–August 2012 2018. Taxa Studied Bacterioplankton. Methods clustered zero‐radius operational taxonomic unit (zOTU) (subspecies‐like level) into (OTU) (species‐like calculated the intra‐specific variation spatial asynchrony OTU. examined relative effects environment versus space (latitude) on bacterial quantified assembly processes specialists, respectively. binary‐state speciation extinction (BiSSE) model has been used estimate evolutionary characteristics. abundances top zOTUs within each OTU were identified reveal preferences (distribution patterns at sites). Results found that had higher variation, greater wider width than specialists. With increasing latitude, decreased abundance variations occurrence Diversification was main driving factor both groups, though deterministic showed local communities. Bacterial coexisted whereas average Main Conclusions demonstrated distinct These results highlight differences biogeography taxa mediated emphasize distinctly vital roles differing mechanisms

Language: Английский

Citations

19