Improved phosphorus nutrition by arbuscular mycorrhizal symbiosis as a key factor facilitating glycyrrhizin and liquiritin accumulation in Glycyrrhiza uralensis

Xie, Wei; Hao, Zhipeng; Meng, Yu; Wu, Zhaoxiang; Zhao, Aihua; Li, Jinglong; Zhang, Xin; Chen, Baodong

doi:10.1007/s11104-018-3861-9

Cited by 47 publications

(49 citation statements)

References 80 publications

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“…AM symbiosis can improve plant mineral nutrition, especially P, and regulate the biosynthesis of secondary metabolites to enhance plant resistance [47]. In the current study, AM inoculation markedly improved plant growth and facilitated the accumulations of glycyrrhizin and liquiritin compared with the non-AM plants in sterilized soil, which has been proven in our previous studies [28,30]. However, we observed no significant difference in plant growth, including plant height, plant dry weights, nutrient concentrations, photosynthesis traits, and accumulations of glycyrrhizin and liquiritin between the AM plants in sterilized soil and non-AM plants in unsterilized soil, suggesting that AM symbiosis could take over the role of indigenous soil microbial communities to a certain extent to support plant growth and biosynthesis of secondary metabolites.…”

Section: Discussionsupporting

confidence: 79%

“…The plants were harvested after 3 months of growth. Our previous studies revealed that the inoculated plants would have extensive mycorrhizal colonization by this time [28,30].…”

Section: Methodsmentioning

confidence: 93%

“…While the role of microbial communities in ecosystem functioning is unequal, there exist some specific microbial group, such as AM fungi, being key drivers of many ecosystem processes, including soil nutrient cycling, water uptake and plant growth [14,15]. Our previous studies have proven that AM fungi play important roles in promoting plant growth [28,30], however, the relative importance and effectiveness of indigenous soil microbial communities and the key beneficial microorganisms, such as AM fungi, are rarely considered [37]. In this study, we used liquorice as the host plant to test the hypotheses that soil indigenous microorganisms are indispensable for plant growth, and that AM fungi may compensate for the loss of indigenous microbial communities to support plant growth.…”

Section: Discussionmentioning

confidence: 99%

“…(1) Rhizophagus has a global distribution and could be successfully adapted to different environment conditions [31][32][33][34]. (2) Our previous studies verified that R. irregularis shows excellent promoting effects on liquorice growth and active ingredient accumulation in sterilized soil [28,30]. However, the importance of the roles of R. irregularis in promoting plant performance relative to that of soil indigenous microbes remains largely unclear.…”

Section: Introductionmentioning

confidence: 91%

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Arbuscular Mycorrhizal Fungi Can Compensate for the Loss of Indigenous Microbial Communities to Support the Growth of Liquorice (Glycyrrhiza uralensis Fisch.)

Meng

Xie

Zhang

et al. 2019

Plants

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Soil microorganisms play important roles in nutrient mobilization and uptake of mineral nutrition in plants. Agricultural management, such as soil sterilization, can have adverse effects on plant growth because of the elimination of indigenous microorganisms. Arbuscular mycorrhizal (AM) fungi are one of the most important beneficial soil microorganisms for plant growth. However, whether AM fungi can compensate for the loss of indigenous microbial communities to support plant growth and metabolism is largely unknown. In this study, a pot experiment was conducted to investigate the effects of AM fungi on plant growth and secondary metabolism in sterilized and unsterilized soil. We used liquorice (Glycyrrhiza uralensis Fisch.), an important medicinal plant as the host, which was inoculated with the AM fungus Rhizophagus irregularis or not and grown in unsterilized or sterilized soil. Plant photosynthesis traits, plant growth and nutrition level, concentrations of the secondary metabolites, and expression levels of biosynthesis genes were determined. The results showed that soil sterilization decreased plant growth, photosynthesis, and glycyrrhizin and liquiritin accumulation, and moreover, downregulated the expression of related biosynthesis genes. Inoculation with R. irregularis in sterilized soil offset the loss of indigenous microbial communities, resulting in plant growth and glycyrrhizin and liquiritin concentrations similar to those of plants grown in unsterilized soil. Thus, AM fungi could compensate for the loss of indigenous microbial communities by soil sterilization to support plant growth and secondary metabolism.

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Section: Discussionsupporting

confidence: 79%

“…The plants were harvested after 3 months of growth. Our previous studies revealed that the inoculated plants would have extensive mycorrhizal colonization by this time [28,30].…”

Section: Methodsmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 91%

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Arbuscular Mycorrhizal Fungi Can Compensate for the Loss of Indigenous Microbial Communities to Support the Growth of Liquorice (Glycyrrhiza uralensis Fisch.)

Meng

Xie

Zhang

et al. 2019

Plants

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“…Previous studies indicated that C, N, S, and P contents in plants were related to both primary growth and secondary metabolites [44,45]. Xie et al reported that the improved root P status to arbuscular mycorrhizal fungi could affect plant C balance and induce more C partitioning to secondary metabolism [46]. Plants accompanied by soil microorganisms could be assisted with nutrient acquisition, while N and P uptake could affect the allocation of C resources and cause changes in C:N:P stoichiometry [7].…”

Section: Pgpr Additions Improved the Bc Output Mainly By Increasing Tmentioning

confidence: 99%

Effects of Phosphate-Solubilizing Bacteria and N2-fixing Bacteria on Nutrient Uptake, Plant Growth, and Bioactive Compound Accumulation in Cyclocarya paliurus (Batal.) Iljinskaja

Wang

Chen

et al. 2019

Forests

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Research Highlights: We firstly interpreted nutritional mechanisms involved in growth regulation and phytochemical accumulation in Cyclocarya paliurus (Batal.) Iljinskaja under three inoculant types, and selected bacterial inoculations for multiple purposes of C. paliurus plantation. Co-inoculation with phosphate-solubilizing bacteria (PSB) and N2-fixing bacteria (NFB) performed better in growth promotion and nutrient uptake than single bacterial inoculation. Background and Objectives: C. paliurus is a well-known medicinal plant as it accumulates bioactive compounds (BC) such as flavonoids, triterpenoids, and polysaccharides, in its leaves. However, the effects of plant growth-promoting rhizobacteria (PGPR) on the growth and BC yields in C. paliurus are not known. To fill this gap, the effects of different inoculants should be examined. Materials and Methods: A pot experiment was conducted and two-year-old C. paliurus seedlings were inoculated with three inoculant types (PSB, NFB, PSB + NFB). After four rounds of inoculation, the growth characteristics and concentrations of flavonoids, triterpenoids, and polysaccharides, as well as the nutrients in soil and leaves, were measured. Results: The inoculations resulted in the elevation of soil available nutrients, with improvements in plant growth, BC yield, and N and P uptake in leaves. However, the changes in BC yields were mainly a result of elevated leaf biomass rather than BC concentrations, and leaf biomass was regulated by C:N:P stoichiometry. Co-inoculation with PSB and NFB was applicable for leaf production, while inocula related to NFB resulted in higher BC yields than PSB and control. Conclusions: Our results implied that bacterial inoculants improved plant growth and BC yield by altering the nutrients in soil and leaves, while three inoculant types showed a different pattern in which co-inoculation with four strains presented a greater performance than single bacterial addition.

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Untapped Bioactive Compounds from Endophytic Fungi with Potential Antioxidant Activity

Bhaskar,

Jain,

Srivastava

2024

Fungal Biology

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Improved phosphorus nutrition by arbuscular mycorrhizal symbiosis as a key factor facilitating glycyrrhizin and liquiritin accumulation in Glycyrrhiza uralensis

Cited by 47 publications

References 80 publications

Arbuscular Mycorrhizal Fungi Can Compensate for the Loss of Indigenous Microbial Communities to Support the Growth of Liquorice (Glycyrrhiza uralensis Fisch.)

Arbuscular Mycorrhizal Fungi Can Compensate for the Loss of Indigenous Microbial Communities to Support the Growth of Liquorice (Glycyrrhiza uralensis Fisch.)

Effects of Phosphate-Solubilizing Bacteria and N2-fixing Bacteria on Nutrient Uptake, Plant Growth, and Bioactive Compound Accumulation in Cyclocarya paliurus (Batal.) Iljinskaja

Untapped Bioactive Compounds from Endophytic Fungi with Potential Antioxidant Activity

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