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Effects of arbuscular mycorrhizal fungi on severity of root rot of bananas caused by Cylindrocladium spathiphylli

Declerck Stéphane, Risède Jean-Michel, Rufyikiri Gervais, Delvaux Bruno. 2002. Effects of arbuscular mycorrhizal fungi on severity of root rot of bananas caused by Cylindrocladium spathiphylli. Plant Pathology, 51 (1) : 109-115.

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Résumé : The interaction between four arbuscular mycorrhizal (AM) fungi, #Glomus sp.#, #G. proliferum#, #G. intraradices# and #G. versiforme#, and the root-rot fungus #Cylindrocladium spathiphylli#, and subsequent effects on growth and phosphorus nutrition of banana (#Musa acuminata#, AAA, cv. 'Grande Naine') were investigated under glasshouse conditions. Overall, root infection by #C. spathiphylli# reduced the growth of banana plants, but preinoculation with AM fungi significantly attenuated this detrimental effect. Lower disease severity, stimulation of growth and increase of shoot P content were observed for the plants inoculated with one of the four AM fungi. #Glomus sp.# and #G. proliferum# induced the largest increase in growth parameters and shoot P content as compared to #G. intraradices# and #G. versiforme#, in the presence as well as in the absence of #G. spathiphylli#. Root damage caused by #C. spathiphylli# was decreased in the presence of AM fungi, but the inoculation of mycorrhizal plants with #C. spathiphylli# also decreased the intensity of AM fungal root colonization, indicating a clear interaction between the two organisms.

Mots-clés Agrovoc : Musa, mycorhizé à vésicule et arbuscule, Glomus, Glomus intraradices, Glomus versiforme, Cylindrocladium, pourriture des racines, maladie fongique, phosphore, croissance, nutrition des plantes, Musa acuminata

Classification Agris : H20 - Maladies des plantes

Auteurs et affiliations

  • Declerck Stéphane, UCL (BEL)
  • Risède Jean-Michel, CIRAD-FLHOR-BPA (GLP)
  • Rufyikiri Gervais, UCL (BEL)
  • Delvaux Bruno, UCL (BEL)

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Source : Cirad - Agritrop (https://agritrop.cirad.fr/508733/)

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