Relation of Plants with Other Kingdoms: the Unique Role of Fructans

Morvan‐Bertrand, Annette; Ende, Wim Van den; Prud'Homme, Marie-Pascale

doi:10.1016/b978-0-323-85410-8.00010-7

Cited by 2 publications

(4 citation statements)

References 146 publications

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“…The same effect may not be generated by levan since the endo‐levanase from B. paralicheniformis LB1‐1A may be ineffective in degrading the high‐DP branched levan produced by the levansucrase of Pseudomonas syringae (15% branching) that was used in this study. Alternatively, adding exogenous levan to diverse types of Bacillaceae may exert differential stabilizing effects, under circumstances where they may not be able to produce their own levan, since sucrose levels in the apoplast may be below the threshold level required to initiate the transferase activity of GH68 enzymes (Alamäe et al, 2023; Morvan‐Bertrand et al, 2023). Therefore, it would be interesting to consider the effect of adding sucrose to these mixtures as well.…”

Section: Discussionmentioning

confidence: 99%

“…and potentially also on other (beneficial) microbes in the plant rhizosphere and phyllosphere. Health‐promoting fructan‐mediated prebiotic effects are well‐known in the gut context (Kolida and Gibson, 2007; Adamberg et al, 2018; Nayla et al, 2020), but the prebiotic concept needs to be broadened to plant host health (Vassileva et al, 2020; Morvan‐Bertrand et al, 2023; Wen et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

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Exploring Synergistic Effects of Levan and Levan‐MetabolizingBacillaceae in Promoting Growth and Enhancing Immunity of Tomato and Wheat

Jiao,

Tran‐Minh,

Nasir

et al. 2024

Physiologia Plantarum

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Boosting plant immunity by priming agents can lower agrochemical dependency in plant production. Levan and levan‐derived oligosaccharides (LOS) act as priming agents against biotic stress in several crops. Additionally, beneficial microbes can promote plant growth and protect against fungal diseases. This study assessed possible synergistic effects caused by levan, LOS and five levan‐ and LOS‐metabolizing Bacillaceae (Bacillus and Priestia) strains in tomato and wheat. Leaf and seed defense priming assays were conducted in non‐soil (semi‐sterile substrate) and soil‐based systems, focusing on tomato‐Botrytis cinerea and wheat‐Magnaporthe oryzae Triticum (MoT) pathosystems. In the non‐soil system, seed defense priming with levan, the strains (especially Bacillus velezensis GA1), or their combination significantly promoted tomato growth and protection against B. cinerea. While no growth stimulatory effects were observed for wheat, disease protective effects were also observed in the wheat‐MoT pathosystem. When grown in soil and subjected to leaf defense priming, tomato plants co‐applied with levan and the bacterial strains showed increased resistance to B. cinerea compared with plants treated with levan or single strains, and these effects were synergistic in some cases. For seed defense priming in soil, more synergistic effects on disease tolerance were observed in a non‐fertilized soil as compared to a fertilized soil, suggesting that potential prebiotic effects of levan are more prominent in poor soils. The potential of using combinations of Bacilliaceae and levan in sustainable agriculture is discussed.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Exploring Synergistic Effects of Levan and Levan‐MetabolizingBacillaceae in Promoting Growth and Enhancing Immunity of Tomato and Wheat

Jiao,

Tran‐Minh,

Nasir

et al. 2024

Physiologia Plantarum

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“…They suggested that the difference in clubroot development between the two genotypes might be due to differences in the attraction mechanisms of rhizospheric beneficial bacteria. Knowing the role of fructans and particularly that of levans in plant-microbial interactions (Morvan-Bertrand et al, 2023;Tian et al, 2021), the difference in FEH expression between "Tenor" and "Yudal" (i.e., high and low FEH induction by SA, respectively) might induce differences in attraction between levan accumulating and nonlevan accumulating beneficial bacteria.…”

Section: Up-regulation Of 6and1fehs By Sa Is In Favor Of Their Putati...mentioning

confidence: 99%

“…Indeed, FEHs may help P. parasitica establishment through the suppression of kestotrioses, which have been shown to act as elicitors of plant defense response (Janse van Versluys, Toksoy Öner, et al, 2022;. Recent analysis of transcriptomic data from 22 pathosystems involving wild-type Arabidopsis Col-0 highlighted that At6&1-FEH and AtPR1, but not At6-FEH, were not only induced in response to biotrophic fungi (Blumeria graminis, Golovinomyces orontii, and G. cichoracearum) but also to the necrotrophic fungus Plectosphaerella cucumerina (Morvan-Bertrand et al, 2023), showing that the induction of FEH and PR1 does not discriminate biotrophic and necrotrophic fungi. Moreover, FEHs could also be involved in the interaction of Brassicaceae with nonpathogenic bacteria such as the levan-producing root-associated bacterium Pseudomonas brassicacearum (Achouak et al, 2000), which have beneficial plant growth-promoting properties (Gislason & de Kievit, 2020).…”

Section: Up-regulation Of 6and1fehs By Sa Is In Favor Of Their Putati...mentioning

confidence: 99%

Fructan exohydrolases (FEHs) are upregulated by salicylic acid together with defense‐related genes in non‐fructan accumulating plants

Nguyen,

Leclerc,

Manzanares‐Dauleux

et al. 2023

Physiologia Plantarum

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The identification of several fructan exohydrolases (FEHs, EC 3.2.1.80) in non‐fructan accumulating plants raised the question of their roles. FEHs may be defense‐related proteins involved in the interactions with fructan‐accumulating microorganisms. Since known defense‐related proteins are upregulated by defense‐related phytohormones, we tested the hypothesis that FEHs of non‐fructan accumulating plants are upregulated by salicylic acid (SA), jasmonic acid (JA) and ethylene (ET) using the model plant Arabidopsis thaliana and the agronomically relevant and genetically related species Brassica napus. By sequence homologies with the two known FEH genes of A. thaliana, At6‐FEH, and At6&1‐FEH, the genes coding for the putative B. napus FEHs, Bn6‐FEH and Bn6&1‐FEH, were identified. Plants were treated at root level with SA, methyl jasmonate (MeJA) or 1‐aminocyclopropane‐1‐carboxylic acid (ACC). The transcript levels of defense‐related and FEH genes were measured after treatments. MeJA and ACC did not upregulate FEHs, while HEL (HEVEIN‐LIKE PREPROTEIN) expression was enhanced by both phytohormones. In both species, the expression of AOS, encoding a JA biosynthesis enzyme, was enhanced by MeJA and that of the defensine PDF1.2 and the ET signaling transcription factor ERF1/2 by ACC. In contrast, SA not only increased the expression of genes encoding antimicrobial proteins (PR1 and HEL) and the defense‐related transcription factor WRKY70 but also that of FEH genes, in particular 6&1‐FEH genes. This result supports the putative role of FEHs as defense‐related proteins. Genotypic variability of SA‐mediated FEH regulation (transcript level and activities) was observed among five varieties of B. napus, suggesting different susceptibilities toward fructan‐accumulating pathogens.

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Relation of Plants with Other Kingdoms: the Unique Role of Fructans

Cited by 2 publications

References 146 publications

Exploring Synergistic Effects of Levan and Levan‐MetabolizingBacillaceae in Promoting Growth and Enhancing Immunity of Tomato and Wheat

Exploring Synergistic Effects of Levan and Levan‐MetabolizingBacillaceae in Promoting Growth and Enhancing Immunity of Tomato and Wheat

Fructan exohydrolases (FEHs) are upregulated by salicylic acid together with defense‐related genes in non‐fructan accumulating plants

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