The importance of Rhizobium, Agrobacterium, Bradyrhizobium, Herbaspirillum, Sinorhizobium in sustainable agricultural production

Shahrajabian, Mohamad Hesam; Sun, Wenli; Cheng, Qi

doi:10.15835/nbha49312183

Cited by 15 publications

(6 citation statements)

References 331 publications

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“…Both maize and rice intercropping could not substantially alter the soil microbial a diversity; however, it strongly influenced the microbial community structure. In the two intercropping systems, the potential functions of 28 potential beneficial genera included the following: the generation of IAA (Bal et al, 2013), nitrogen fixation (Hayat et al, 2010;Shahrajabian et al, 2021), soil mercury content reduction (Ustiatik et al, 2022), the degradation of polycyclic aromatic hydrocarbons (Zhao et al, 2021), antibacterial functions (Mosquera et al, 2020), antimycotic functions (De Brito et al, 2022), aluminum tolerance (Silambarasan et al, 2022), salt and alkali resistance , phosphate solubilization (Chhetri et al, 2021;Saadouli et al, 2021), siderophores (Jamalzadeh et al, 2021;Nie et al, 2022), nitrification (Peng et al, 2021), etc. In the control group, the potential functions of the 15 potentially beneficial genera were as follows: the nitrogen cycle (Zhang et al, 2022), antibiotic functions (Nakkeeran et al, 2021), heavy metal resistance (Zhai et al, 2020;Sharma et al, 2022), phosphate solubilization (Huang et al, 2021;Duan et al, 2022), improved photosynthesis (Katsenios et al, 2021), nitrification (Li et al, 2022), etc.…”

Section: Discussionmentioning

confidence: 99%

Strip intercropping with local crops increased Aconitum carmichaeli yield and soil quality

et al. 2023

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Aconitum carmichaeli Debx. is a traditional Chinese medicine that is cultivated in China and Japan. However, the monoculturing of this herb substantially decreases soil quality. Therefore, scientific planting management is crucial for resolving the current problems in the cultivation of A. carmichaeli. In this study, we conducted a comparative study on the soil environmental characteristics, herb growth and quality of A. carmichaeli intercropping with five local crops in two different areas. Herb growth and quality, including biomass and secondary metabolites, and rhizosphere soil environmental characteristics were measured. The results showed that the intercropping with the five local crops substantially improved the A. carmichaeli biomass and polysaccharide content, decreased the disease index, and altered three monoester diterpenoid alkaloids and three diester diterpenoid alkaloids accumulations. The intercrops also increased the soil pH, nitrogen-cycling-gene abundances, and potentially beneficial microorganism abundances, and it also changed the soil nutrient levels. Moreover, these intercropping patterns could alleviate the continuous cropping obstacles of A. carmichaeli. According to a comprehensive evaluation of the A. carmichaeli growth and quality, as well as the soil quality, the best intercropping systems were the A. carmichaeli intercropping with rice, maize, and peanut. In summary, the strip-intercropping systems could improve the A. carmichaeli growth and soil quality, and be beneficial to the sustainable ecological planting of A. carmichaeli.

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Section: Discussionmentioning

confidence: 99%

Strip intercropping with local crops increased Aconitum carmichaeli yield and soil quality

et al. 2023

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“…Bradyrhizobium and Streptomyces are known to promote plant growth [44,45]. Bacillus and Pseudomonas control plant disease through their antimicrobial activities [46].…”

Section: Structure Of the Rhizosphere Bacterial Community Of P Squamatamentioning

confidence: 99%

Comparison of Rhizosphere Bacterial Communities of Pinus squamata, a Plant Species with Extremely Small Populations (PSESP) in Different Conservation Sites

Li,

Lu,

Sun

2024

Microorganisms

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Pinus squamata is one of the most threatened conifer species in the world. It is endemic to northeastern Yunnan Province, China, and has been prioritized as a Plant Species with Extremely Small Populations (PSESP). The integrated study of soil properties and rhizosphere bacteria can assist conservation to understand the required conditions for the protection and survival of rare and endangered species. However, differences between the rhizospheric bacterial communities found in the soil surrounding P. squamata at different conservation sites remain unclear. In this study, Samples were collected from wild, ex situ, and reintroduced sites. Bacterial communities in different conservation sites of P. squamata rhizosphere soils were compared using Illumina sequencing. The soil physicochemical properties were determined, the relationships between the bacterial communities and soil physicochemical factors were analyzed, and the potential bacterial ecological functions were predicted. The reintroduced site Qiaojia (RQ) had the highest richness and diversity of bacterial community. Actinobacteria, Proteobacteria, and Acidobacteriota were the dominant phyla, and Bradyrhizobium, Mycobacterium, Acidothermus were the most abundant genera. Samples were scattered (R = 0.93, p = 0.001), indicating significant difference between the different conservation sites. The abundance of Mycobacterium differed between sites (0.01 < p ≤ 0.05), and the relative abundances of Bradyrhizobium and Acidothermus differed significantly among different sites (0.001 < p ≤ 0.01). Soil total potassium (TK) and available nitrogen (AN) were the main factors driving bacterial community at the phylum level (0.01 < p ≤ 0.05). This study generated the first insights into the diversity, compositions, and potential functions of bacterial communities associated with the rhizosphere soils of P. squamata in different conservation sites and provides a foundation to assess the effect of conservation based on bacterial diversity and plant growth-promoting rhizobacteria (PGPR) to guide future research into the conservation of P. squamata.

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“…The production of protective molecules is obtained via the shikimate pathway which may consist of the enzyme phenylalanine ammonia lyase (PAL) for the production of phenylpropanoids after microbial eliciting [170], which may have significant effects to adjust the pressure from external factors, called induced systemic resistance (ISR) [171]. The main mechanisms targeted by microorganisms according to various biostimulants can target shoot targets such as stomatal regulation and xylem hydraulic conductance, and root targets such as root zone water availability, root ethylene and auxin levels via ROS scavenging, membrane stability, and osmoprotection [172]. Biostimulants can influence plant phenotype, cellular level, and molecular level.…”

Section: Case Studies and Practical Application Of Microbial Biostimu...mentioning

confidence: 99%

The Application of Arbuscular Mycorrhizal Fungi as Microbial Biostimulant, Sustainable Approaches in Modern Agriculture

Sun,

Shahrajabian

2023

Plants

Self Cite

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Biostimulant application can be considered an effective, practical, and sustainable nutritional crop supplementation and may lessen the environmental problems related to excessive fertilization. Biostimulants provide beneficial properties to plants by increasing plant metabolism, which promotes crop yield and improves the quality of crops; protecting plants against environmental stresses such as water shortage, soil salinization, and exposure to sub-optimal growth temperatures; and promoting plant growth via higher nutrient uptake. Other important benefits include promoting soil enzymatic and microbial activities, changing the architecture of roots, increasing the solubility and mobility of micronutrients, and enhancing the fertility of the soil, predominantly by nurturing the development of complementary soil microbes. Biostimulants are classified as microbial, such as arbuscular mycorrhizae fungi (AMF), plant-growth-promoting rhizobacteria (PGPR), non-pathogenic fungi, protozoa, and nematodes, or non-microbial, such as seaweed extract, phosphite, humic acid, other inorganic salts, chitin and chitosan derivatives, protein hydrolysates and free amino acids, and complex organic materials. Arbuscular mycorrhizal fungi are among the most prominent microbial biostimulants and have an important role in cultivating better, healthier, and more functional foods in sustainable agriculture. AMF assist plant nutrient and water acquisition; enhance plant stress tolerance against salinity, drought, and heavy metals; and reduce soil erosion. AMF are proven to be a sustainable and environmentally friendly source of crop supplements. The current manuscript gives many examples of the potential of biostimulants for the production of different crops. However, further studies are needed to better understand the effectiveness of different biostimulants in sustainable agriculture. The review focuses on how AMF application can overcome nutrient limitations typical of organic systems by improving nutrient availability, uptake, and assimilation, consequently reducing the gap between organic and conventional yields. The aim of this literature review is to survey the impacts of AMF by presenting case studies and successful paradigms in different crops as well as introducing the main mechanisms of action of the different biostimulant products.

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The importance of Rhizobium, Agrobacterium, Bradyrhizobium, Herbaspirillum, Sinorhizobium in sustainable agricultural production

Cited by 15 publications

References 331 publications

Strip intercropping with local crops increased Aconitum carmichaeli yield and soil quality

Strip intercropping with local crops increased Aconitum carmichaeli yield and soil quality

Comparison of Rhizosphere Bacterial Communities of Pinus squamata, a Plant Species with Extremely Small Populations (PSESP) in Different Conservation Sites

The Application of Arbuscular Mycorrhizal Fungi as Microbial Biostimulant, Sustainable Approaches in Modern Agriculture

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