Induction of systemic resistance in tomato against broomrape (<i>Phelipanche aegyptiaca</i>)

Borzouei, Shahla; Sharifi, Rouhallah; Moarrefzadeh, Nahid

doi:10.1111/jph.12846

Cited by 2 publications

(1 citation statement)

References 33 publications

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“…Moreover, induced systemic resistance (ISR), potentiated by numerous strains of nonpathogenic microorganisms such as plant growth-promoting rhizobacteria (PGPR), is another route to boost the broad-spectrum immunity in plants [93,99,100]. Many studies have shown the efficacy of PGPR to induce ISR such as in tomato to defend Phelipanche aegyptiaca [101] and Pseudomonas syringae [102]; cotton against Macrophomina phaseolina (Tassi) [71]; tobacco to resist Tobacco mosaic virus [103]; mung bean to protect against Macrophomina phaseolina [104]; rice against Xanthomonas campestris [105]; and tomato to defend Ralstonia solanacearum [106]. erefore, research on the induction of disease resistance using biotic and abiotic inducers is desirable and can be regarded as one of the effective approaches to FBG management.…”

Section: Biotic and Abiotic Stresses Induced Host Defensementioning

confidence: 99%

Faba Bean Gall (Olpidium viciae K.) as a Priority Biosecurity Threat for Producing Faba Bean in Ethiopia: Current Status and Future Perspectives

Meresa

Gebremedhin

2020

International Journal of Agronomy

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The diploid cool-season legume species, faba bean (Vicia faba L.), is one of the vital pulses for the people in the world as it maintains the sustainability of agriculture and provides nutrient-rich grains. Biotic and abiotic stresses are, however, challenging the faba bean production in many countries. The foliar diseases of faba bean are among the major constraints for the production and productivity of faba bean. Recently, a new foliar disease “Faba bean gall” caused by plant debris and soil-borne pathogen (Olpidium viciae K.) is rapidly spreading and causing high yield losses in Ethiopia. This review paper presents the distribution, impact, epidemiology, and biology of faba bean gall pathogen and principally illustrates how the application and investigation of the various diseases’ management approaches such as avoiding crop residues, crop rotation, intercropping, use of elicitors to induce host resistance, use of resistant genotypes, bioagents, compost teas, plant extracts, and lastly use of chemical fungicides could be important to control the faba bean gall disease underlying in faba bean.

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Section: Biotic and Abiotic Stresses Induced Host Defensementioning

confidence: 99%

Faba Bean Gall (Olpidium viciae K.) as a Priority Biosecurity Threat for Producing Faba Bean in Ethiopia: Current Status and Future Perspectives

Meresa

Gebremedhin

2020

International Journal of Agronomy

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Comparative analysis of two neighboring conducive and suppressive soils towards plant parasitism caused by Phelipanche ramosa L. Pomel on Brassica napus L.

Martinez

Pouvreau

Jestin

et al. 2023

Preprint

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Background In western France, rapeseed farmers face significant yield losses due to root parasitism caused by Phelipanche ramosa, a holoparasite plant of the Orobanchaceae family. Recently, a reduction of parasitic plant development has been observed in fields with history of severe infestation. In a same given pedoclimatic environment, this so-called soil-suppression of parasitism might presumably result from microbial mechanisms targeting P. ramosa. We tested this hypothesis on two soils from neighboring rapeseed fields, with similar physicochemical properties but contrasted parasitism, characterized as suppressive and conducive. We assessed these soils in a hydroponic co-cultivation system of P. ramosa and B. napus, and simultaneously sampled rhizosphere exudates weekly, as well as rhizosphere and rapeseed roots at three time points along parasite development. Comparisons were thus drawn between conducive and suppressive soils, both in untreated or gamma-sterilized conditions, regarding the effects of soil derived signaling metabolites on broomrape key early parasitic stages (i.e. germination and pre-haustorium development), late parasite development as well as soil bacterial and fungal structures. Results We demonstrate that the suppressive soil mitigates broomrape parasitism by reducing both parasite attachments and development, while causing tubercle necrosis. Activity assays on initial soils as well as co-cultivation rhizosphere exudates reveal that pre-attachment stages of broomrape are not affected by suppression. Root exudates, either they were collected from plants cultivated on suppressive or conducive soils, exerted similar contribution on the induction of broomrape seed germination and on haustoria formation. Thus, attachment and post-attachment stages are more likely to be suppressed by soil microbiota. Given the observed dissimilarities in microbial composition between the soils, we suggest that rather than bacteria, fungi play a greater part in parasitism suppression. Because suppression is not correlated with fungal diversity during co-cultivation, we suspect that in addition to general microbial interactions, specific groups of fungi participate in parasitism reduction. Further correlation network analyses (WGCNA) propose that three clusters of ASVs are indeed correlated with suppressive parasitic traits by their abundance. In these clusters, 7 ASVs are inversely correlated with parasitic attachment and one is positively correlated with the occurrence of necrotic tubercles, while being more abundant in the suppressive soil (DEseq2). These 7 ASVs are from Nectriaceae, Niessliaceae, Bartaliniaceae, Holtermanniaceae families as well as from Helotiales and Pleosporales orders, while the last ASV is identified as a Berkeleyomyces sp., a necrotrophic fungal genus known as a causal agent of black root rot. Conclusion This study explains the observed contrasted parasite development on two physiochemically similar soils by linking parasitic infestation to fungal dynamics in the rhizosphere. This finding extends our knowledge of disease suppressive soils to plant parasitism and proposes biological leads for potential biocontrol of broomrape.

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Induction of systemic resistance in tomato against broomrape (Phelipanche aegyptiaca)

Cited by 2 publications

References 33 publications

Faba Bean Gall (Olpidium viciae K.) as a Priority Biosecurity Threat for Producing Faba Bean in Ethiopia: Current Status and Future Perspectives

Faba Bean Gall (Olpidium viciae K.) as a Priority Biosecurity Threat for Producing Faba Bean in Ethiopia: Current Status and Future Perspectives

Comparative analysis of two neighboring conducive and suppressive soils towards plant parasitism caused by Phelipanche ramosa L. Pomel on Brassica napus L.

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