Impact of salt and exogenous AM inoculation on indigenous microbial community structure in the rhizosphere of dioecious plant, Populus cathayana

Wu, Na; Li, Zhen; Tang, Ming

doi:10.1038/s41598-021-97674-w

Cited by 5 publications

(5 citation statements)

References 59 publications

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“…The addition of exogenous microorganisms ( B . subtilis A-5) may significantly affect the community structure of rhizosphere microorganisms because of their need to compete with indigenous microbes to colonize and survive in the rhizosphere (Wu et al, 2021 ). For example, Li, 2021 found that in Ningnan tobacco fields, B .…”

Section: Discussionmentioning

confidence: 99%

“…Frontiers in Microbiology frontiersin.org (Chao1) and diversity (Shannon and Simpson); PGA treatment affected the bacterial evenness more sensitively than A5 and FJY treatments did (P < 0.05). The addition of exogenous microorganisms (B. subtilis A-5) may significantly affect the community structure of rhizosphere microorganisms because of their need to compete with indigenous microbes to colonize and survive in the rhizosphere (Wu et al, 2021). For example, Li, 2021 found that in Ningnan tobacco fields, B. amyloliticus B1619 application decreased bacterial community α diversity during the flourishing period, while compound biological agents increased the α diversity of the rhizosphere bacterial community during the clumping and flourishing periods, indicating that specific microbial agents may differ in their effects on the bacterial community of rhizosphere soil.…”

Section: Figurementioning

confidence: 99%

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Effects of Bacillus subtilis A-5 and its fermented γ-polyglutamic acid on the rhizosphere bacterial community of Chinese cabbage

Bai

Zhang

et al. 2022

Front. Microbiol.

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Chemical fertilizer reduction combined with novel and green agricultural inputs has become an important practice to improve microecological health in agricultural production. Given the close linkages between rhizosphere processes and plant nutrition and productivity, understanding how fertilization impacts this critical zone is highly important for optimizing plant–soil interactions and crop fitness for agricultural sustainability. Here, by using a pot experimental system, we demonstrated that nitrogen fertilizer reduction and microbial agent application promoted plant fitness and altered the microbial community structure in the rhizosphere soil with the following treatments: no fertilization, CK; conventional chemical fertilizer, CF; 30% reduced nitrogen fertilizer, N; 30% reduced nitrogen fertilizer with pure γ-PGA, PGA; 30% reduced nitrogen fertilizer with Bacillus subtilis A-5, A5; 30% reduced nitrogen fertilizer with γ-PGA fermentation broth, FJY. The PGA, A5, and FJY treatments all significantly promoted crop growth, and the FJY treatment showed the strongest positive effect on Chinese cabbage yield (26,385.09 kg/hm2) (P < 0.05). Microbial agents affected the α diversity of the rhizosphere bacterial community; the addition of B. subtilis A-5 (A5 and FJY treatments) significantly affected rhizospheric bacterial community structure. Urease activity and soil pH were the key factors affecting bacterial community structure and composition. The FJY treatment seemed to influence the relative abundances of important bacterial taxa related to metabolite degradation, predation, and nitrogen cycling. This discovery provides insight into the mechanism underlying the effects of microbial agent inputs on rhizosphere microbial community assembly and highlights a promising direction for the manipulation of the rhizosphere microbiome to yield beneficial outcomes.

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Section: Discussionmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Effects of Bacillus subtilis A-5 and its fermented γ-polyglutamic acid on the rhizosphere bacterial community of Chinese cabbage

Bai

Zhang

et al. 2022

Front. Microbiol.

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“…Soil salinization also reduces the permeability of the soil, affecting the water absorption activities of plant and crop roots and causing physiological dehydration and other problems [12,13]. Soil salinization also has a negative impact on soil microbial communities, which worsens soil biological characteristics and hinders the growth and development of plants and crops [14][15][16]. The action of biochar on plants can accelerate their growth, thus increasing the yield of crops.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Effect of Modified Biochar on Saline–Alkali Soil Remediation and Crop Growth

Wang

et al. 2023

Sustainability

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To solve the problem of soil degradation in coastal saline–alkali land, three different types of biochar (rice straw biochar, magnetic biochar, and humic acid–magnetic biochar) were prepared to remedy the saline–alkali soil under different mixing ratios. The effects of biochar on the growth of crops in saline–alkali soil were explored through a pot experiment on Chinese cabbage. The experimental results showed that the soil leaching treatment combined with humic acid–magnetic biochar could effectively repair the coastal saline–alkali soil. After adding 5% humic acid–magnetic biochar, the content of soil organic matter was 33.95 g/kg, the water content was 13.85%, and the contents of available phosphorus and available potassium were 9.43 mg/kg and 29.51 mg/kg. After adding 5% humic acid–magnetic biochar, the plant height of Chinese cabbage was 9.16 ± 0.19 cm, and the plant germination rate reached 83.33 ± 5.54%. The incorporation of biochar could effectively increase the chlorophyll content and soluble protein content of pakchoi and reduce the soluble sugar content of pakchoi. The study analyzed the effect of different modified biochar on saline–alkali land restoration and crop growth and explored the action rule of hydrochloric acid magnetic biochar on saline–alkali land restoration, which has important practical value for improving coastal saline–alkali land.

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“…A noteworthy aspect of this symbiotic relationship is its association with the diversity of other soil bacteria. Bacterial communities in the rhizosphere and mycorrhizosphere can influence AMF-plant symbiosis and consequently affect iron uptake and homeostasis [15]. Certain bacteria, known as plant growth-promoting rhizobacteria, can enhance the efficiency of AMF symbiosis, potentially leading to improved iron acquisition and homeostasis.…”

Section: Introductionmentioning

confidence: 99%

Exploring the Roles of Arbuscular Mycorrhizal Fungi in Plant–Iron Homeostasis

Rajapitamahuni,

Kang,

Lee

2023

Agriculture

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Arbuscular mycorrhizal fungi (AMF) form a vital symbiotic relationship with plants. Through their extensive hyphal networks, AMF extend the absorptive capacity of plant roots, thereby allowing plants to reach otherwise inaccessible micronutrient sources. Iron, a critical micronutrient involved in photosynthesis and other metabolic processes, often becomes inaccessible owing to its tendency to form insoluble complexes in soil. AMF symbiosis significantly ameliorates this challenge by enhancing iron uptake and homeostasis in plants, altering root architecture, and producing root exudates that improve iron solubility. Moreover, the interaction with diverse soil bacteria, particularly plant growth-promoting rhizobacteria, can potentiate the benefits of AMF symbiosis. Siderophores are low-molecular-weight chelators with iron-binding capacities produced by various microorganisms and plant roots. They play pivotal roles in regulating intracellular iron and have been identified in different mycorrhizal associations, including AMF. While molecular mechanisms behind AMF-mediated iron uptake have been partially explored, the intricate networks involving AMF, plants, siderophores, and other soil microbiota are largely unknown. This review focuses on the multifaceted roles of AMF in plant–iron homeostasis, interactions with soil bacteria, and the potential of siderophores in these processes, emphasizing the possibilities for harnessing these relationships for sustainable agriculture and enhancing plant productivity.

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Impact of salt and exogenous AM inoculation on indigenous microbial community structure in the rhizosphere of dioecious plant, Populus cathayana

Cited by 5 publications

References 59 publications

Effects of Bacillus subtilis A-5 and its fermented γ-polyglutamic acid on the rhizosphere bacterial community of Chinese cabbage

Effects of Bacillus subtilis A-5 and its fermented γ-polyglutamic acid on the rhizosphere bacterial community of Chinese cabbage

Analysis of the Effect of Modified Biochar on Saline–Alkali Soil Remediation and Crop Growth

Exploring the Roles of Arbuscular Mycorrhizal Fungi in Plant–Iron Homeostasis

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