Diurnal metabolic regulation of isoflavones and soyasaponins in soybean roots

Matsuda, Hinako; Nakayasu, Masaru; Aoki, Yosuke; Yamazaki, Shinichi; Nagano, Atsushi J.; Yazaki, Kazufumi; Sugiyama, Akifumi

doi:10.1101/2020.04.22.056598

Cited by 6 publications

(14 citation statements)

References 64 publications

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“…While studies have examined the circadian clock in A. thaliana (Voß et al, 2015) and soybean ( Glycine max [L.] Merr.) roots (Matsuda et al, 2020), as well as other above‐ground heterotrophic organs including maize ( Zea mays L.) immature ears (Hayes et al, 2010) and grape ( Vits vinifera L.) berries (Rienth et al, 2014), no study has investigated the circadian clock in other below‐ground heterotrophic tissues such as storage roots or tubers.…”

Section: Introductionmentioning

confidence: 99%

Keeping time in the dark: Potato diel and circadian rhythmic gene expression reveals tissue‐specific circadian clocks

et al. 2022

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The circadian clock is an internal molecular oscillator and coordinates numerous physiological processes through regulation of molecular pathways. Tissue-specific clocks connected by mobile signals have previously been found to run at different speeds in Arabidopsis thaliana tissues. However, tissue variation in circadian clocks in crop species is unknown. In this study, leaf and tuber global gene expression in cultivated potato under cycling and constant environmental conditions was profiled. In addition, we used a circadian-regulated luciferase reporter construct to study tuber gene expression rhythms. Diel and circadian expression patterns were present among 17.9% and 5.6% of the expressed genes in the tuber. Over 500 genes displayed differential tissue specific diel phases. Intriguingly, few core

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Section: Introductionmentioning

confidence: 99%

Keeping time in the dark: Potato diel and circadian rhythmic gene expression reveals tissue‐specific circadian clocks

et al. 2022

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“…35 soyasaponin accumulation and secretion into the rhizosphere are still largely unknown. 32 Findings by one study illustrate coexpression patterns by key enzymes involved in soyasaponin biosynthesis and ABC transporter genes in soybean roots, suggesting they may be correlated with soyasaponin secretion. 32 However, to date, no soyasaponin-specific membrane transporters have been identified and functionally confirmed.…”

Section: Threatsmentioning

confidence: 97%

“…32 Findings by one study illustrate coexpression patterns by key enzymes involved in soyasaponin biosynthesis and ABC transporter genes in soybean roots, suggesting they may be correlated with soyasaponin secretion. 32 However, to date, no soyasaponin-specific membrane transporters have been identified and functionally confirmed. 8 Under field conditions, rhizosphere composition primarily consists of group B soyasaponins (mainly soyasaponin I) followed by group A, E, and DDMP soyasaponins.…”

Section: Threatsmentioning

confidence: 97%

“…8 However, soybean root exudates characterized by another study report that group A soyasaponin (Ab) content was moderately higher than that of group B soyasaponin (Bb) content. 32 General trends observed in root exudates contrast to soyasaponin composition found in soybean leaf and root tissues where DDMP soyasaponins are the primary components. Furthermore, differences in soyasaponin content in plant tissues and root exudates can be observed across plant developmental stages, as broadly depicted in Figure 1B.…”

Section: Threatsmentioning

confidence: 98%

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Bridging the Gaps between Plant and Human Health: A Systematic Review of Soyasaponins

Yates

Roberson

Ramsue

et al. 2021

J. Agric. Food Chem.

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Saponins, prominent secondary plant metabolites, are recognized for their roles in plant defense and medicinal benefits. Soyasaponins, commonly derived from legumes, are a class of triterpenoid saponins that demonstrate significant potential for plant and human health applications. Previous research and reviews largely emphasize human health effects of soyasaponins. However, the biological effects of soyasaponins and their implications for plants in the context of human health have not been welldiscussed. This review provides comprehensive discussions on the biological roles of soyasaponins in plant defense and rhizosphere microbial interactions; biosynthetic regulation and compound production; immunological effects and potential for therapeutics; and soyasaponin acquisition attributed to processing effects, bioavailability, and biotransformation processes based on recent soyasaponin research. Given the multifaceted biological effects elicited by soyasaponins, further research warrants an integrated approach to understand molecular mechanisms of regulations in their production as well as their applications in plant and human health.

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“…The amount of daidzein and genistein in root exudates is stable during the day. However, genes for transcription factors and biosynthesis of isoflavone metabolism show diurnal regulation with increased expression during the daytime (Matsuda et al 2020). GmMYB176, a transcription factor of isoflavone biosynthesis highly expressed in roots, induces isoflavone biosynthetic genes from dawn to noon, followed by the induction of isoflavone biosynthetic genes at noon, and a slight increase of daidzein aglycone in roots in the afternoon (Matsuda et al 2020).…”

Section: Secretion Into the Rhizospherementioning

confidence: 99%

Flavonoids and saponins in plant rhizospheres: roles, dynamics, and the potential for agriculture

Sugiyama

2021

Bioscience, Biotechnology, and Biochemistry

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Plants are in constant interaction with a myriad of soil microorganisms in the rhizosphere, an area of soil in close contact with plant roots. Recent research has highlighted the importance of plant specialized metabolites (PSMs) in shaping and modulating the rhizosphere microbiota; however, the molecular mechanisms underlying the establishment and function of the microbiota mostly remain unaddressed. Flavonoids and saponins are a group of PSMs whose biosynthetic pathways have largely been revealed. Although these PSMs are abundantly secreted into the rhizosphere and exert various functions, the secretion mechanisms have not been clarified. This review summarizes the roles of flavonoids and saponins in the rhizosphere with a special focus on interactions between plants and the rhizosphere microbiota. Furthermore, this review introduces recent advancements in the dynamics of these metabolites in the rhizosphere and indicates potential applications of PSMs for crop production and discusses perspectives in this emerging research field.

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Diurnal metabolic regulation of isoflavones and soyasaponins in soybean roots

Abstract: 4Isoflavones and soyasaponins are major specialized metabolites accumulated in soybean 2 5 roots and secreted into the rhizosphere. Unlike the biosynthetic pathway, the 2 6 transporters involved in metabolite secretion remain unknown. The developmental 2 7

Cited by 6 publications

References 64 publications

Keeping time in the dark: Potato diel and circadian rhythmic gene expression reveals tissue‐specific circadian clocks

Keeping time in the dark: Potato diel and circadian rhythmic gene expression reveals tissue‐specific circadian clocks

Bridging the Gaps between Plant and Human Health: A Systematic Review of Soyasaponins

Flavonoids and saponins in plant rhizospheres: roles, dynamics, and the potential for agriculture

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