AI Article Synopsis
- Acidovorax spp. are bacteria that cause significant diseases in various plants, particularly impacting crops like sugarcane, corn, and rice.
- In Argentina, Acidovorax avenae leads to red stripe disease in sugarcane, affecting about 30% of milling stems and causing economic losses.
- A study utilized multilocus sequence typing (MLST) to explore the genetic diversity of 15 local strains of A. avenae, revealing five sequence types within a clonal complex, indicating a shared origin and providing insights into its evolutionary relationships with other Acidovorax species.
Article Abstract
Acidovorax spp. cause a wide range of economically important diseases in monocotyledonous and dicotyledonous plants, including sugarcane, corn, rice, oat, millet, foxtail watermelon, and orchid. In Argentina, the red stripe disease of sugarcane caused by Acidovorax avenae affects 30% of the milling stems with important economic losses. To explore the genetic diversity of this bacterium associated with red stripe in Argentina, multilocus sequence typing (MLST) was applied. This study included 15 local strains isolated from four different sugarcane planting regions and selected after random amplified polymorphic DNA analysis and reference strains of A. citrulli, A. avenae, and A. oryzae to investigate their phylogenetic relationships. MLST analysis resulted in five sequence types among the sugarcane A. avenae strains which constitute a clonal complex, meaning a common and close origin. Sugarcane strains were related to A. avenae from other hosts and distant to A. citrulli. Signals of frequent recombination in several lineages of A. avenae was detected and we observed that A. oryzae is closely related to A. avenae strains. This study provides valuable data in the field of epidemiological and evolutionary investigations of novel clone of A. avenae strains causing sugarcane red stripe. The knowledge of the genetic diversity and strain-host specificity are important to select the genotypes with the best response to the red stripe disease.
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| http://dx.doi.org/10.1094/PHYTO-08-18-0303-R | DOI Listing |
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