Composition, function and driving factors of microbial communities in rhizosphere soil and root endophyte of Codonopsis pilosula in different years

Cui, Xingshuai; Meng, Tongtong; Zhu, Ning; Li, Ying; Leng, Feifan; Wang, Yonggang

doi:10.1016/j.rhisph.2023.100712

Cited by 7 publications

(2 citation statements)

References 70 publications

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“…Therefore, during early establishment, the J-C effect may be the main reason for the failure of seedling regeneration [11]. Studies showed that the root endophytic microorganisms in soil were connected with seedling regeneration [12][13][14][15]. Endophytic bacteria are ubiquitous in most plant species, can latently or actively colonize plant tissues, and develop a range of different relationships with their host plant [16].…”

Section: Introductionmentioning

confidence: 99%

Differences in Root Endophytic Bacterial Communities of Chinese Cork Oak (Quercus variabilis) Seedlings in Different Growth Years

Sha

Hong

Che

et al. 2023

Forests

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In forests, seedling renewal is influenced by many environmental factors, including climate change, seed size, wildfires, and ecological factors. It is unclear how different growth years of seedlings affect Chinese cork oak (Quercus variabilis) root endophyte communities. In this study, we took a holistic approach, using Illumina sequencing, to study the composition and function of bacterial communities associated with root microorganisms in four Q. variabilis seedlings after 1, 2, and 3 years of growth. The bacterial alpha diversity indexes were highest in the second year and lowest in the third year, and age was the decisive factor for the differences found in the root endophytic bacterial communities. Total phosphorus had the greatest effect on bacterial communities. The abundance of beneficial bacteria Streptomyces (8.69%) and Novosphingobium (4.22%) was highest in the second-year samples, and their abundance decreased by 7.96% and 3.61% in the third year, respectively. Higher levels of plant disease inhibition and metabolism (23.80%) were in the roots of second-year Q. variabilis seedlings. The metabolic abundance of carbohydrate was 3.66% lower in the first year and 3.95% lower in the third year compared to the second year. Our results suggest that the structure and function of bacterial communities changed with increasing growth years.

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Section: Introductionmentioning

confidence: 99%

Differences in Root Endophytic Bacterial Communities of Chinese Cork Oak (Quercus variabilis) Seedlings in Different Growth Years

Sha

Hong

Che

et al. 2023

Forests

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“…Recent research has shown that plant–microbe interactions can improve biomass and tanshinone production in Salvia miltiorrhiza ( Chen H. M. et al, 2018 ; Huang et al., 2018 ). To date, numerous studies have been conducted to investigate the relationship between microbiome communities and bioactive compounds found in medicinal plants ( Cui et al., 2019 ; Zhang et al., 2020 ; Zhang Y. H. et al, 2020 ; Li et al., 2021 ; Cui et al., 2023 ; Li et al., 2023 ; Zhang H. et al., 2023 ). However, the composition characteristics and diversity of rhizosphere and root microbiome communities, as well as their relationship with the major active compounds in P. amurense , remain largely unknown.…”

Section: Introductionmentioning

confidence: 99%

Integrated microbiome and metabolomics analysis reveal the relationship between plant-specialized metabolites and microbial community in Phellodendron amurense

Zhang,

Gao,

Tian

et al. 2024

Front. Plant Sci.

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Phellodendron amurense is the essential source of bisbenzylisoquinoline alkaloids (BIAs), making it a highly valued raw material in traditional Chinese medicine. The plant’s root secondary metabolism is intricately linked to the microbial communities that surround it. However, the root-associated microbiomes of P. amurense, as well as the potential correlation between its bioactive compounds and these microbiomes, remain poorly understood. Here, the metabolic profiles of root, rhizosphere, and bulk soils of P. amurense revealed the dramatic differences in the relative content of plant-specialized metabolites. A total of 31, 21, and 0 specialized metabolites in P. amurense were identified in the root, rhizosphere soil, and bulk soil, respectively, with higher content of the seven major BIAs observed in the rhizosphere compared with that in the bulk soils. The composition of the bulk and rhizosphere microbiomes was noticeably distinct from that of the endospheric microbiome. The phylum Cyanobacteria accounted for over 60% of the root endosphere communities, and the α-diversity in root was the lowest. Targeted seven BIAs, namely, berberine, palmatine, magnocurarine, phellodendrine, jatrorrhizine, tetrahydropalmatine, and magnoflorine, were significantly positively correlated with Nectriaceae and Sphingobacteriaceae. This study has illuminated the intricate interaction networks between P. amurense root-associated microorganisms and their key chemical compounds, providing the theoretical foundation for discovering biological fertilizers and laying the groundwork for cultivating high-quality medicinal plants.

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Cooperative effects of three preservatives on physiological quality, endophytic bacterial community and volatile organic compounds of postharvest Codonopsis pilosula var. modesta roots

Wang,

Wen,

Tao

et al. 2024

J Sci Food Agric

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BACKGROUNDCodonopsis pilosula var. modesta (CPVM) is a famous medicinal and edible plant of Campanulaceae. However, fresh CPVM roots (FCPVR) are prone to softening, browning and spoilage after concentrated harvesting in the main production area of Gansu Province, China in autumn, which poses great challenges to their large‐scale storage and modern processing. In this study, effects of chitosan (CS), natamycin (NA) and modified atmosphere agent (MA) on the postharvest quality of FCPVR were first investigated. The roots after different treatments were stored at 4 °C and relative humidity of 75 ± 5% for 100 days. Their overall quality changes were evaluated from three perspectives: physiological quality, endophytic bacterial community and volatile organic compounds.RESULTSThe clustering heatmap and principal component analysis results indicated that CS (2 g kg−1), NA (0.5 g kg−1) and MA (5 g) had a synergistic effect on physiological quality. The roots in the CS + NA + MA group maintained better physiological state, effective components and antioxidant capacity throughout the storage process. On this basis, compared with room temperature storage, the relative abundance of the main spoilage bacterium Pseudomonas in the CS + NA + MA group roots decreased by 44% on the 100th day of storage. Furthermore, after CS + NA + MA composite treatment, the roots produced richer esters with fruit aroma during low‐temperature storage.CONCLUSIONSThe CS + NA + MA composite treatment could maintain the physiological quality and flavor of FCPVR, inhibit spoilage by microbial contamination and maintain the optimal quality during low‐temperature storage for up to 100 days. © 2024 Society of Chemical Industry.

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Composition, function and driving factors of microbial communities in rhizosphere soil and root endophyte of Codonopsis pilosula in different years

Cited by 7 publications

References 70 publications

Differences in Root Endophytic Bacterial Communities of Chinese Cork Oak (Quercus variabilis) Seedlings in Different Growth Years

Differences in Root Endophytic Bacterial Communities of Chinese Cork Oak (Quercus variabilis) Seedlings in Different Growth Years

Integrated microbiome and metabolomics analysis reveal the relationship between plant-specialized metabolites and microbial community in Phellodendron amurense

Cooperative effects of three preservatives on physiological quality, endophytic bacterial community and volatile organic compounds of postharvest Codonopsis pilosula var. modesta roots

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