Diversity and antifungal activity of endophytic bacteria associated with Panax ginseng seedlings

Hong, Chi Eun; Jo, Sung Hee; Jo, Ick-Hyun; Park, Jeong Mee

doi:10.1007/s11816-018-0504-9

Cited by 17 publications

(14 citation statements)

References 46 publications

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“…Crop pests and diseases are among the most significant causes of economic losses in agriculture, and at least one study has demonstrated a correlation between the bioactive compounds produced by endophytic bacteria and host plant disease tolerance (Bibi et al, 2012). Likewise, certain endophytic bacteria from Panax ginseng, termed pathogen antagonists, demonstrate antimicrobial activity against Botrytis cinerea and Cylindrocarpon destructans, as well as hydrogen cyanide production in vitro (Hong et al, 2018). Some Pseudomonas spp.…”

Section: Increased Biotic Resistance Of Host Plantsmentioning

confidence: 99%

Beneficial Relationships Between Endophytic Bacteria and Medicinal Plants

et al. 2021

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Plants benefit extensively from endophytic bacteria, which live in host plant tissues exerting no harmful effects. Bacterial endophytes promote the growth of host plants and enhance their resistance toward various pathogens and environmental stresses. They can also regulate the synthesis of secondary metabolites with significant medicinal properties and produce various biological effects. This review summarizes recent studies on the relationships between bacterial endophytes and medicinal plants. Endophytic bacteria have numerous applications in agriculture, medicine, and other industries: improving plant growth, promoting resistance toward both biotic and abiotic stresses, and producing metabolites with medicinal potential. Their distribution and population structure are affected by their host plant’s genetic characteristics and health and by the ecology of the surrounding environment. Understanding bacterial endophytes can help us use them more effectively and apply them to medicinal plants to improve yield and quality.

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Section: Increased Biotic Resistance Of Host Plantsmentioning

confidence: 99%

Beneficial Relationships Between Endophytic Bacteria and Medicinal Plants

et al. 2021

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“…Tissue type is an important factor determining bacterial endophyte diversity and abundance. For 21 bacterial endophytes isolated from P. ginseng seedlings, bacteria in leaves and rhizomes were more diverse than those in other tissues [ 24 ]. Based on direct 16S rDNA sequencing, endophytes in P. ginseng roots, stems, flower stalk and leaves belonged to the Actinobacteria, Firmicutes and Proteobacteria, but members of the Actinobacteria were not detected in flower stalks [ 25 ].…”

Section: Ginseng Bacterial Endophyte Diversity and Abundancementioning

confidence: 99%

“…Plant age also affects ginseng bacterial endophyte diversity and abundance. In a study of 1886 bacterial endophytes isolated from P. ginseng seedlings, there were few differences before transplanting, but there were major changes correlated with transplantation, indicating an effect of the soil environment [ 24 ]. Endophytes in the Micrococcaceae, found only in leaves and rhizomes, were not detected prior to transplantation, and thus were presumed to have entered the tissues from the soil or air after transplantation.…”

Section: Ginseng Bacterial Endophyte Diversity and Abundancementioning

confidence: 99%

“…Isolation of 21 bacterial endophytes from different tissues of P. ginseng seedlings resulted in 10 isolates of Paenibacillus, Bacillus and Pseudomonas showing inhibition of both Cylindrocarpon destructans and Botrytis cinerea in culture with the clear inhibition zones, indicating antibiotic production [ 25 ]. Out of 116 isolates from various tissues of 2- to 6-year-old P. ginseng that belonged to 42 different species, B. amyloliquefaciens, B. megaterium, Pseudomonas frederiksbergensis and Staphylococcus saprophyticus inhibited C. destructans and B. cinerea in dual-cultures [ 24 ]. Isolation of 63 bacterial strains from 5-year-old P. ginseng roots resulted in P. polymyxa , a Bacillus species and Pseudomonas poae with inhibitory activity in culture against Rhizoctonia solani, Fusarium oxysporum, Pythium ultimum and Phytophthora capsici [ 36 ].…”

Section: Ginseng Interactions With Bacterial Endophytesmentioning

confidence: 99%

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The Endosphere Microbiome of Ginseng

Goodwin

2022

Plants

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The endosphere of ginseng contains a variety of fungal, bacterial, archaeal and viral endophytes. Bacterial endophytes are primarily members of the Proteobacteria, Actinobacteria, Firmicutes and Bacteroidetes, and fungal endophytes are primarily members of the Ascomycota, Zygomycota and Basidiomycota. Although archaea and viruses have been detected in symptomless ginseng plants, little is known about them. Many but not all studies have shown roots having the highest abundance and diversity of bacterial and fungal endophytes, with some endophytes showing specificity to above or belowground tissues. Abundance often increases with root age, although diversity can decrease, possibly related to increases in potential latent fungal pathogen infections. The descriptions of many endophytes that can metabolize ginsenosides indicate an adaptation of the microbes to the unique combination of secondary metabolites found in ginseng tissues. Most research on the benefits provided by bacterial and fungal endophytes has concentrated on improved plant nutrition, growth promotion and increased disease resistance, but little on their ability to increase abiotic stress resistance. Some other areas where more research is needed is field trials with endophyte-treated plants grown in various environments, genomic/metagenomic analysis of endophytes, and the effects of endophytes on induced disease resistance and abiotic stress tolerance.

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“…Therefore, understanding the diversity and distribution of endophytic bacteria will help to reveal the relationship between these bacteria and plant growth and development, stress resistance and metabolic compounds. Studies have shown endophytic bacterial colonization in medicinal plants, such as Salvia miltiorrhiza [8], Pinellia tenore [9], Panax ginseng [10], Atractylodes lancea [11], Artemisia annua [12] and Dodonaea viscosa [13]. However, there are few studies on the relationship between the diversity and structure of endophytic bacteria and bioactive compounds in medicinal plants.…”

Section: Introductionmentioning

confidence: 99%

Influence of tissue and geographic locality on culturable endophytic bacteria of Atractylodes macrocephala

Wei

Wang

et al. 2021

Microbiology

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The endophytic bacterial community and their diversity are closely related to the host’s growth and development. This paper explores the culturable endophytic bacteria in the stems, leaves, roots and rhizomes of Atractylodes macrocephala (AM) of four localities (Yuqian, Wenxian, Pan’an and Pingjiang) and the potential correlation between the bacteria and plant bioactive compounds. A total of 118 endophytic bacteria belonging to 3 phyla, 5 classes, 11 orders, 26 families and 48 genera were isolated and identified from the four AM tissues. Among them, Bacillus was the dominant genus. In AM, the tissue type and locality influenced the endophytic bacterial community. Approximately 29.7 and 28.8% of the endophytic bacteria exhibited tissue specificity and geographic specificity, respectively. Furthermore, high-performance liquid chromatography revealed that the sesquiterpenoid (atractylenolide I, atractylenolide Ⅱ and atractylon) content was more in the rhizomes of Wenxian than in those of Pingjiang, Yuqian and Pan’an. The multiple linear regression was used to screen the bacterial strains related to the bioactive compounds of AM. The relative frequency of Microbacterium positively correlated with atractylenolide I and atractylon content in AM but negatively correlated with atractylenolide Ⅱ content. The study also provides a theoretical framework for future research on endophytic bacteria as alternative sources of secondary plant metabolites.

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Diversity and antifungal activity of endophytic bacteria associated with Panax ginseng seedlings

Cited by 17 publications

References 46 publications

Beneficial Relationships Between Endophytic Bacteria and Medicinal Plants

Beneficial Relationships Between Endophytic Bacteria and Medicinal Plants

The Endosphere Microbiome of Ginseng

Influence of tissue and geographic locality on culturable endophytic bacteria of Atractylodes macrocephala

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