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ARS Home » Southeast Area » Canal Point, Florida » Sugarcane Field Station » Research » Publications at this Location » Publication #393536

Research Project: Identification of Resistant Germplasm and Markers Associated with Resistance to Major Diseases of Sugarcane

Location: Sugarcane Field Station

Title: Towards a microbiota-based understanding of sugarcane health

item SANGUIN, HERVE - Cirad, France
item Sood, Sushma
item TOURNIER, ESTELLE - Cirad, France
item BLONDIN, LAURENCE - Cirad, France
item JULIAN, CHARLOTTE - Cirad, France
item FERNANDEZ, EMMANUEL - Cirad, France
item MAHE, FREDERIC - Cirad, France
item FILLOUX, DENIS - Cirad, France
item DAUGROIS, JEAN - Cirad, France
item ROUMAGNAC, PHILIPPE - Cirad, France
item ROTT, PHILIPPE - Cirad, France

Submitted to: American Society of Sugar Cane Technologists
Publication Type: Abstract Only
Publication Acceptance Date: 3/31/2022
Publication Date: 7/16/2022
Citation: Sanguin, H., Sood, S.G., Tournier, E., Blondin, L., Julian, C., Fernandez, E., Mahe, F., Filloux, D., Daugrois, J., Roumagnac, P., Rott, P. 2022. Towards a microbiota-based understanding of sugarcane health. American Society of Sugar Cane Technologists. 32.

Interpretive Summary: N/A

Technical Abstract: The structure, diversity, and dynamic of plant microbiota play a central role in plant productivity and plant health. Increasing numbers of data become available regarding the modulation of plant defense and immunity by microbiota, but also on the impact of plant innate immunity on microbiota. Thus, cooperative plant-microbe interactions can promote the recruitment of beneficial microorganisms and limit the development of pathogens. Our investigations are aimed at developing an innovative approach based on sugarcane microbiota characterization during disease epidemic phases occurring in varietal selection processes. Our initial objective is to decipher the microbiota and virobiota diversity of a sugarcane variety infected by two pathogens: Xanthomonas albilineans (Xa) and sugarcane mosaic virus (SCMV) causing leaf scald and mosaic, respectively. Plants of cultivar CP16-1488 susceptible to the two diseases were inoculated with Xa, SCMV, or both pathogens in a replicated trial at Canal Point, FL in 2021. Several months after inoculation, leaf, root, and stalk samples were collected from symptomless control plants and from plants exhibiting disease symptoms. Virobiota and microbiota diversity are currently analysed and preliminary data will be presented. Future investigations will include a larger number of sugarcane varieties and different collection sites to identify microbiota features of sugarcane pathobiomes. This project is expected to provide major insights into the role played by microbiota and virobiota in sugarcane plant health. It should lead to innovative precision farming and improvement of selection for stress-resistant sugarcane.