Gibberellin antagonizes jasmonate‐induced defense against <i>Meloidogyne graminicola</i> in rice

Yimer, Henok Zemene; Nahar, Kamrun; Kyndt, Tina; Haeck, Ashley; Meulebroek, Lieven Van; Vanhaecke, Lynn; Demeestere, Kristof; Höfte, Monica; Gheysen, Godelieve

doi:10.1111/nph.15046

Cited by 55 publications

(43 citation statements)

References 84 publications

(211 reference statements)

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“…Among the genes related to plant hormones, the expression of the two genes OsCPS4 (Os04g0178300) and OsKS4 (Os04g0179700) related to gibberellin synthesis was mostly induced by H. mucronata in the infected roots of Bawangbian (log 2 FC = 10.61) and Jiabali (log 2 FC = 9.73), respectively. In contrast with the observations from M. graminicola and rice interactions, gibberellin plays a dominant role over JA in determining the susceptibility to M. graminicola in rice [23]. It could be that gibberellin has important roles in the interaction between rice and H. mucronata.…”

Section: Resistance and Susceptible Host Response To H Mucronata Infcontrasting

confidence: 63%

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Transcriptome analysis of roots from resistant and susceptible rice varieties infected with Hirschmanniella mucronata

et al. 2019

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Hirschmanniella mucronata is a plant‐parasitic nematode that is widespread in rice production areas and causes 10–25% yield losses a year on average. Here, we investigated the mechanism of resistance to this nematode by comparing the transcriptomes of roots from resistant (Jiabali) and susceptible (Bawangbian) varieties of rice. Of 39 233 unigenes, 2243. exhibited altered total expression levels between control and infected resistant and susceptible varieties. Significant differences were observed in the expression levels of genes related to stress, peptidase regulation or inhibition, oxidoreductase activity, peroxidase activity and antioxidant activity. The up‐regulated genes related to plant secondary metabolites, such as phenylpropanoid, lignin, cellulose or hemicellulose, may result in an increase in the degree of resistance of Jiabali to the H. mucronata infection compared with that of Bawangbian by affecting cell wall organization or biogenesis. Of the genes that responded similarly to H. mucronata infection, ~252 (~76.59%) showed greater changes (whether induced or suppressed) in RN155 (susceptible varieties infected by rice root nematode) than in RN51 (resistance varieties infected by rice root nematode). Nineteen pathogenesis‐related genes belonging to nine pathogenesis‐related gene families were significantly induced by H. mucronata in the infected roots of Jiabali and Bawangbian, and 13 differentially expressed genes showed changes in their abundance only in the susceptible Bawangbian variety. This study may help enhance our understanding of the mechanisms underlying plant resistance to nematodes.

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Section: Resistance and Susceptible Host Response To H Mucronata Infcontrasting

confidence: 63%

“…and Table S4). Gibberellin plays important roles in the susceptibility of rice to M. graminicola infection . M. graminicola infection in rice induces strong transcriptional changes in the gibberellin (GA) biosynthesis ( GA20ox1 and GA20ox2 ) and signaling ( GID1L2 ) genes in galls (3 and 7 DAI) and giant cells (7 and 14 DAI) .…”

Section: Resultsmentioning

confidence: 99%

Transcriptome analysis of roots from resistant and susceptible rice varieties infected with Hirschmanniella mucronata

et al. 2019

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“…Additionally, a phytochrome‐interacting factor ( PIF ) (c69497_c0) gene showed a higher expressed level in the susceptible genotype at all stages, contrast to two other PIF genes (c59912_c1 and c76228_c1). Previous studies indicated that GA antagonized JA‐induced defence against pathogen attack in rice (Siciliano, Carneiro, Spadaro, Garibaldi, & Gullino, ; Yimer et al, ). The functional divergence of those genes involved in GA signalling pathway may result in different response to RSD of the two genotypes.…”

Section: Resultsmentioning

confidence: 94%

Comparative analysis reveals changes in transcriptomes of sugarcane upon infection by Leifsoniaxyli subsp. xyli

Wei

Pan

et al. 2019

Journal of Phytopathology

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Ratoon stunting disease (RSD) caused by bacterium Leifsoniaxyli subsp. xyli (Lxx) is a devastating disease of sugarcane over a large part of the world. Genetic improvement for RSD‐resistant varieties is considered the most effective method to control the disease. However, genetic improvement of sugarcane is hindered by the limited information about the molecular mechanisms underlying Lxx pathogenicity and defence responses in sugarcane. In this study, genome‐wide gene expression profiling was used to compare RSD‐resistant (CP72‐2086) and RSD‐susceptible (GT11) genotypes at different infection time points in order to identify the candidate regulators for RSD resistance. A total of 14,494 differentially expressed genes (DEGs) were identified, indicating that dramatic changes had occurred in gene expression upon Lxx infection, especially in the susceptible genotype. Enrichment analysis showed that a large number of genes related to plant hormone signal transduction, phenylalanine metabolism, phenylpropanoid biosynthesis and starch and sucrose metabolism was responsible for sugarcane response to Lxx infection. Plant hormone signalling pathway genes were significantly differentially expressed at the early infection stage between the two genotypes. The resistant genotype chose the jasmonic acid‐ and ethylene‐dependent host‐defence pathways to resist Lxx infection, whereas the susceptible genotype preferred the salicylic acid‐dependent host‐defence pathways. These findings help unravel the molecular mechanisms of sugarcane plant–Lxx interactions and may pave the way for sugarcane breeding for disease resistance.

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“…simultaneously influence plant cell differentiation and modulate the defense responses to establish a successful infection via feeding cell formation (Gheysen & Mitchum, 2011;Ji et al, 2013). The plant hormones JA, ethylene, SA, ABA, brassinosteroids (BR), gibberellic acid (GA), and auxin are known to be involved in the interactions between plant and root-knot nematodes (Karczmarek et al, 2004;Nahar et al, 2011Nahar et al, , 2013Kyndt et al, 2017;Yimer et al, 2018;Gheysen & Mitchum, 2019). For instance, the JA-based defense pathway plays a vital role in rice defense against M. graminicola infection, whereas SA is also involved in defense but to a lesser extent than JA (Nahar et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the JA-precursor cis-(+)-12-oxo-phytodienoic acid (cis-OPDA) acts as a signaling molecule in regulating Arabidopsis defense against M. hapla (Gleason et al, 2016). On the other hand, ABA, BR, and GA promote rice susceptibility to M. graminicola infection by interacting antagonistically with the JA pathway Kyndt et al, 2017;Yimer et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Strigolactones enhance root‐knot nematode (Meloidogyne graminicola) infection in rice by antagonizing the jasmonate pathway

et al. 2019

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Summary Strigolactones (SLs) are carotenoid‐derived plant hormones that also act in the rhizosphere to stimulate germination of root‐parasitic plants and enhance plant symbiosis with beneficial microbes. Here, the role of SLs was investigated in the interaction of rice (Oryza sativa) roots with the root‐knot nematode Meloidogyne graminicola. Genetic approaches and chemical sprays were used to manipulate SL signaling in rice before infection with M. graminicola. Then, nematode performance was evaluated and plant defense hormones were quantified. Meloidogyne graminicola infection induced SL biosynthesis and signaling and suppressed jasmonic acid (JA)‐based defense in rice roots, suggesting a potential role of SLs during nematode infection. Whereas the application of a low dose of the SL analogue GR24 increased nematode infection and decreased jasmonate accumulation, the SL biosynthesis and signaling d mutants were less susceptible to M. graminicola, and constitutively accumulated JA and JA‐isoleucine compared with wild‐type plants. Spraying with 0.1 μM GR24 restored nematode susceptibility in SL‐biosynthesis mutants but not in the signaling mutant. Furthermore, foliar application of the SL biosynthesis inhibitor TIS108 impeded nematode infection and increased jasmonate levels in rice roots. In conclusion, SL signaling in rice suppresses jasmonate accumulation and promotes root‐knot nematode infection.

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Gibberellin antagonizes jasmonate‐induced defense against Meloidogyne graminicola in rice

Cited by 55 publications

References 84 publications

Transcriptome analysis of roots from resistant and susceptible rice varieties infected with Hirschmanniella mucronata

Transcriptome analysis of roots from resistant and susceptible rice varieties infected with Hirschmanniella mucronata

Comparative analysis reveals changes in transcriptomes of sugarcane upon infection by Leifsoniaxyli subsp. xyli

Strigolactones enhance root‐knot nematode (Meloidogyne graminicola) infection in rice by antagonizing the jasmonate pathway

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