The bacterial diversity and community structures in rhizosphere soil of two halophytes, <i>Lycium ruthenicum</i> and <i>Kalidium capsicum</i>

Yan, 李岩 Li; Xiaodong, 杨晓东 Yang; Lu, 秦璐 Qin; Guanghui, 吕光辉 Lü; Xuemin, 何学敏 He; Xueni, 张雪妮 Zhang

doi:10.5846/stxb201703200474

Cited by 3 publications

(5 citation statements)

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“…The reason for this difference may be due to the salt metabolism mechanism of halophytes. Previous studies have found that salt metabolism mechanisms of halophytes affect soil bacterial community diversity (Li et al, 2018;Zhao, Li, Shao, et al, 2022). In this work, we selected halophytes with different metabolic mechanisms to better observe the effect of N input on the soil bacterial community in coastal saline wetlands.…”

Section: Effect Of N Addition On Rhizosphere Bacterial Community Dive...mentioning

confidence: 99%

Effects of short‐term nitrogen addition on rhizosphere and bulk soil bacterial community structure of three halophytes in the Yellow River Delta

Zhang

Shao

et al. 2023

Land Degrad Dev

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The total amount and rate of atmospheric nitrogen (N) deposition are constantly increasing, which substantially influences the soil microbial community structure and function. However, it is still unclear whether the responses of different plant rhizosphere soil bacterial community to short‐term N addition was consistent. Based on 16s rRNA sequencing, we investigated the responses of rhizosphere and bulk soil bacterial community of halophytes (salt‐absorbing, salt‐rejecting, and salt‐secreting plant) to short‐term N addition in the Yellow River Delta. The bacterial community α‐diversity of Suaeda salsa (salt‐absorbing plant) was significantly higher in rhizosphere soil than in bulk soil, while no significant difference between Phragmites communis (salt‐rejecting plant) rhizosphere and bulk soil bacterial community α‐diversity was found. The differences were mainly ascribed to the higher N uptake capacity of P. communis, which resulted in no difference in N content between rhizosphere and bulk soil. The short‐term N addition significantly increased the α‐diversity of bacterial community in the rhizosphere soil of Aeluropus sinensis (salt‐secreting plant), but there was no effect on the α‐diversity of bacterial community in the rhizosphere soil of P. communis. Nitrogen addition enhances the salt uptake capacity of A. sinensis and alleviates the salt stress of bacterial growth. The relative abundance of Bacteroidetes for S. salsa and A. sinensis was significantly higher in rhizosphere soil than in bulk soil, and the relative abundance of Actinobacteria for P. communis and S. salsa was higher and lower in rhizosphere soil than in bulk soil, respectively. Salt‐absorbing of S. salsa leads to elevated rhizosphere soil salinity. Higher salinity and abundant carbon promote the Bacteroidetes and inhibit the Actinobacteria. Short‐term N addition caused an increase in the relative abundance of Gemmatimonadetes in halophyte rhizosphere soil and a decrease in the relative abundance of Firmicutes in S. salsa and A. sinensis bulk soil, which may be due to the different response of C:N of root secretions to N addition in halophytes. The relative abundance of rhizosphere soil denitrifying bacteria was higher in S. salsa and A. sinensis than in P. communis, while the reverse was observed for N‐fixing bacteria. The relative abundance of denitrifying bacteria decreased in P. communis and increased in S. salsa and A. sinensis. The low N soil environment of P. communis promotes the activity of N‐fixing bacteria, and the abundant N content of S. salsa and A. sinensis soil promotes the denitrification process. The research clarified that the response of soil bacterial community to short‐term N addition Treatment differed due to the influence of plant species and that N additions had smaller effects on the bacterial community than plant species.

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Section: Effect Of N Addition On Rhizosphere Bacterial Community Dive...mentioning

confidence: 99%

Effects of short‐term nitrogen addition on rhizosphere and bulk soil bacterial community structure of three halophytes in the Yellow River Delta

Zhang

Shao

et al. 2023

Land Degrad Dev

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“…In the natural ecosystem, plant roots come into close contact with the soil, thus forming a highly variable soil microregion known as the 'rhizosphere'. It is the place where plant-soil-microbes interact with their environment (Li et al, 2018). The rhizosphere processes of plants, including the distribution of photosynthetic products and the amount of root exudates, as well as their effects on soil microbial communities, can make a significant change to the soil environment, for example, physical structure, chemical characteristics and biodiversity.…”

Section: Role Of Root-associated Microbes On the Growth Stimulation Of Plantsmentioning

confidence: 99%

“…Meanwhile, the microorganisms in soil and rhizosphere are treated as the potential resources to reduce plant abiotic stress such as salt stress and they play an important role in improving root water uptake and promoting plant growth (Feng, Li, Zhang, & Li, 2000;Yi, Ma, & Li, 2007). The diversity of rhizosphere microbial populations has a considerable impact on the physiological activities of plants in response to salinization, and the changes in microbial communities may passivate soil salinity (Li et al, 2018).…”

Section: Role Of Root-associated Microbes On the Growth Stimulation Of Plantsmentioning

confidence: 99%

“…At the same time, ACC-deaminaseproducing strains can increase the nitrogen fixation of microorganisms and nitrogen concentrations in the rhizosphere of S. europaea, thus promoting its growth and development under salt stress (Ali, Charles, & Glick, 2014); they can also improve the salt tolerance of tomato (Solanum lycopersicum L.) by adjusting the endogenous secondary metabolites and reducing the level of endogenous abscisic acid ABA (Kang et al, 2019). As for salt-tolerant plants, salt stress can enhance bacterial diversity and biomass in their rhizosphere soil, which is speculated to result from the increase of salt concentration that promotes the proliferation of salt-tolerant or halophilic bacteria (Li et al, 2018). Moreover, the colonization of endophytic bacteria can promote the nutrient acquisition of Arabidopsis thaliana though producing siderophores and solubilizing phosphate; improving K + /Na + ratios and adjusting osmotic potential by accumulating compatible solute such as proline, thereby increasing the salt tolerance of plants under salt stress (Eida et al, 2019).…”

Section: Similarly Vaccination Withmentioning

confidence: 99%

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The role of root‐associated microbes in growth stimulation of plants under saline conditions

Liu

et al. 2021

Land Degrad Dev

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Soil salinization has adverse effects on plant growth due to direct ion toxicity or secondary damage, such as mineral nutrition imbalance and the water stress caused by low osmotic potential. The rhizosphere processes of plants are likely to play an important role in the biological improvement of saline soil. However, the understanding of this remains limited. This review summarizes the progress made recently in exploring the

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“…In the same salinized habitat, Cl – in the rhizosphere soil is one of the main drivers affecting the variation in the soil bacterial communities in the rhizosphere of different halophytes ( Zhao Y. et al, 2016 ). Moreover, a previous study found that Proteobacteria and Firmicutes were the dominant bacteria in the rhizosphere soil of Chenopodiaceae plants such as Kalidium foliatum and that the bacterial diversity was positively correlated with the levels of soil organic carbon, organic matter and total nitrogen and negatively correlated with the soil pH and EC ( Li et al, 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Soil bacterial diversity and community structure of Suaeda glauca vegetation in the Hetao Irrigation District, Inner Mongolia, China

Dong,

Wang,

et al. 2024

Front. Microbiol.

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Exploring the bacterial community in the S. glauca rhizosphere was of great value for understanding how this species adapted to the saline-alkali environment and for the rational development and use of saline-alkali soils. In this study, high-throughput sequencing technology was used to investigate the diversity characteristics and distribution patterns of soil bacterial communities in the rhizosphere of S.glauca-dominated communities in the Hetao Irrigation Distract, Inner Mongolia, China. The relationships among bacterial characteristics, soil physicochemical properties and vegetation in four sampling sites were analyzed. The soil bacterial communities in the rhizosphere of S. glauca-dominated communities were mainly composed of 16 phyla (i.e., Proteobacteria, Actinobacteria, Bacteroidetes, Gemmatimonadetes, Chloroflexi, Acidobacteria, Firmicutes, Planctomycetes, Deinococcus-Thermus, Verrucomicrobia, Saccharibacteria, Cyanobacteria, Nitrospirae, JL-ETNP-Z39, Parcubacteria and Chlorobi), and these populations accounted for more than 99% of the total bacterial community. At the genus level, the main bacterial communities comprised Halomonas, Nitriliruptor, Euzebya and Pelagibius, which accounted for 15.70% of the total bacterial community. An alpha diversity analysis indicated that the richness and diversity of rhizosphere soil bacteria differed significantly among the sampling sites, and the bacterial richness and diversity indices of severe saline-alkali land were higher than those of light and moderate saline-alkali land. The principal component analysis (PCA) and linear discriminant analysis effect size (LEfSe) showed significant differences in the species composition of the rhizosphere soil bacterial community among different sampling sites. A correlation analysis showed that the number of bacterial species exhibited the highest correlation with the soil water content (SWC). The richness and evenness indices were significantly correlated with the SWC and SO42–, K+ and Mg2+ concentrations. The electrical conductivity (EC), soluble ions (Na+, CO32– + HCO3–, K+, Ca2+, Mg2+, and SO42+), SWC and vegetation coverage (VC) were the main drivers affecting the changes in its community structure. The bacterial community in the rhizosphere of S. glauca enhanced the adaptability of S. glauca to saline-alkali environment by participating in the cycling process of nutrient elements, the decomposition of organic matter and the production of plant growth regulating substances. These results provided a theoretical reference for further study on the relationship among rhizosphere soil microorganisms and salt tolerance in halophytes.

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The bacterial diversity and community structures in rhizosphere soil of two halophytes, Lycium ruthenicum and Kalidium capsicum

Cited by 3 publications

References 0 publications

Effects of short‐term nitrogen addition on rhizosphere and bulk soil bacterial community structure of three halophytes in the Yellow River Delta

Effects of short‐term nitrogen addition on rhizosphere and bulk soil bacterial community structure of three halophytes in the Yellow River Delta

The role of root‐associated microbes in growth stimulation of plants under saline conditions

Soil bacterial diversity and community structure of Suaeda glauca vegetation in the Hetao Irrigation District, Inner Mongolia, China

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