Complete Genome Sequence of the Plant-Growth-Promoting Bacterium Caulobacter segnis CBR1

Berrios, Louis

doi:10.1007/s00284-021-02548-z

Cited by 7 publications

(3 citation statements)

References 29 publications

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“…S. azotifigens (Table 2 and 4) is also expected to have the potential to promote plant growth as a nitrogen-fixing bacterium in roots (Xie and Yokota, 2006). Although the ecological role of Caulobacterales in the roots is largely unknown and plant growth-promoting effects have not been reported for C. henricii or A. biprosthecium, isolates belonging to the genera Caulobacter and Asticcacaulis were recently shown to exert these effects (Luo et al, 2019;Yang et al, 2019;Berrios, 2021;Okazaki et al, 2021).…”

Section: Seasonal Shifts In Lateral Root-associated Bacterial Communi...mentioning

confidence: 99%

Seasonal Shifts in Bacterial Community Structures in the Lateral Root of Sugar Beet Grown in an Andosol Field in Japan

et al. 2023

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To investigate functional plant growth-promoting rhizobacteria in sugar beet, seasonal shifts in bacterial community structures in the lateral roots of sugar beet were examined using amplicon sequencing analyses of the 16S rRNA gene. Shannon and Simpson indexes significantly increased between June and July, but did not significantly differ between July and subsequent months (August and September). A weighted UniFrac principal coordinate analysis grouped bacterial samples into four clusters along with PC1 (43.8%), corresponding to the four sampling months in the order of sampling dates. Taxonomic analyses revealed that bacterial diversity in the lateral roots was exclusively dominated by three phyla (Actinobacteria, Bacteroidetes, and Proteobacteria) in all samples examined. At the lower taxonomic levels, the dominant taxa were roughly classified into three groups. Therefore, the relative abundances of seven dominant genera (Janthinobacterium, Kribbella, Pedobacter, Rhodanobacter, Sphingobium, Sphingopyxis, and Streptomyces) were the highest in June and gradually decreased as sugar beet grew. The relative abundances of eight taxa (Bradyrhizobiaceae, Caulobacteraceae, Chitinophagaceae, Novosphingobium, Phyllobacteriaceae, Pseudomonas, Rhizobiaceae, and Sphingomonas) were mainly high in July and/or August. The relative abundances of six taxa (unclassified Comamonadaceae, Cytophagaceae, unclassified Gammaproteobacteria, Haliangiaceae, unclassified Myxococcales, and Sinobacteraceae) were the highest in September. Among the dominant taxa, 12 genera (Amycolatopsis, Bradyrhizobium, Caulobacter, Devosia, Flavobacterium, Janthinobacterium, Kribbella, Kutzneria, Pedobacter, Rhizobium, Rhodanobacter, and Steroidobacter) were considered to be candidate groups of plant growth-promoting bacteria based on their previously reported beneficial traits as biopesticides and/or biofertilizers.

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Section: Seasonal Shifts In Lateral Root-associated Bacterial Communi...mentioning

confidence: 99%

Seasonal Shifts in Bacterial Community Structures in the Lateral Root of Sugar Beet Grown in an Andosol Field in Japan

et al. 2023

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“…Based on literature review, enriched ASVs in different groups were categorized as PGPR at the genus level [ 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 , 85 , 86 , 87 , 88 , 89 , 90 , 91 , 92 , 93 , 94 , 95 , 96 , 97 , 98 , 99 , 100 , 101 , 102 , 103 , 104 , 105 , 106 , 107 , 108 , 109 ,…”

Section: Resultsmentioning

confidence: 99%

Exploring the Impact of Coconut Peat and Vermiculite on the Rhizosphere Microbiome of Pre-Basic Seed Potatoes under Soilless Cultivation Conditions

Yan,

Ma,

Bao

et al. 2024

Microorganisms

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Soilless cultivation of potatoes often utilizes organic coconut peat and inorganic vermiculite as growing substrates. The unique microbial communities and physicochemical characteristics inherent to each substrate significantly influence the microecological environment crucial for potato growth and breeding. This study analyzed environmental factors within each substrate and employed Illumina sequencing alongside bioinformatics tools to examine microbial community structures, their correlation with environmental factors, core microbial functions, and the dynamics of microbial networks across various samples. These included pure coconut peat (CP1) and pure vermiculite (V1), substrates mixed with organic fertilizer for three days (CP2 and V2), and three combinations cultivated with potatoes for 50 days (CP3, V3, and CV3—a 1:1 mix of coconut peat and vermiculite with organic fertilizer). Vermiculite naturally hosts a more diverse microbial community. After mixing with fertilizer and composting for 3 days, and 50 days of potato cultivation, fungal diversity decreased in both substrates. Coconut peat maintains higher bacterial diversity and richness compared to vermiculite, harboring more beneficial bacteria and fungi, resulting in a more complex microbial network. However, vermiculite shows lower bacterial diversity and richness, with an accumulation of pathogenic microorganisms. Among the 11 environmental factors tested, water-soluble nitrogen (WSN), total nitrogen (TN), available potassium (AK), total organic carbon (TOC) and air-filled porosity (AFP) were significantly associated with microbial succession in the substrate.The nutritional type composition and interaction patterns of indigenous microorganisms differ between vermiculite and coconut peat. Adding abundant nutrients significantly affects the stability and interaction of the entire microbial community, even post-potato cultivation. When using vermiculite for soilless cultivation, precise control and adjustment of nutrient addition quantity and frequency are essential.

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“…This may explain the high grain biomass observed in the 10 -1 when compared to the other treatments (Figure 3b). The genus Caulobacter and Variovorax, which are also known as plant growth-promoting rhizobacteria (PGPR) (BERRIOS, 2021;HAN et al, 2013), presented a higher relative abundance in 10 -1 and 10 The differences observed in the bacterial community structure between ISS and SS can be explained by the association between bacteria and nematodes. Foreign bacteria may have been introduced into the ISS soil together with the nematodes, and it may have positively influenced the survival and parasitism of the nematodes (TOPALOVIĆ; VESTERGÅRD, 2021).…”

Section: Discussionmentioning

confidence: 99%

Interaction between soil microbiome and nematode activity in soybean crop

Barros¹

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Complete Genome Sequence of the Plant-Growth-Promoting Bacterium Caulobacter segnis CBR1

Cited by 7 publications

References 29 publications

Seasonal Shifts in Bacterial Community Structures in the Lateral Root of Sugar Beet Grown in an Andosol Field in Japan

Seasonal Shifts in Bacterial Community Structures in the Lateral Root of Sugar Beet Grown in an Andosol Field in Japan

Exploring the Impact of Coconut Peat and Vermiculite on the Rhizosphere Microbiome of Pre-Basic Seed Potatoes under Soilless Cultivation Conditions

Interaction between soil microbiome and nematode activity in soybean crop

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