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A novel pathovar of Xanthomonas axonopodis causes gumming of guggal (Commiphora wightii)

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Title A novel pathovar of Xanthomonas axonopodis causes gumming of guggal (Commiphora wightii)
Not Available
 
Creator J.N. Samanta
K. Mandal
S. Maiti
 
Subject Burseraceae
Desert plant
Multilocus sequence analysis
Phylogeny
Threatened species
 
Description Not Available
Guggal (Commiphora wightii (Arnott) Bhandari comb. nov.) is a small tree which is tapped for medicinally important oleo–gum–resin. Naturally infected plant oozes oleo–gum–resin from its trunk and primary branches. However, in either case, the plant dies slowly after oozing. A bacterium was established to be responsible for these phenomena. Four isolates of this bacterium were characterised by biochemical tests, Biolog GN2 microplate reaction, rDNA sequencing, which suggested that the pathogen belonged to the genus Xanthomonas. However, phylogenetic analysis based on chaperone protein (dnaK) gene, TonB–dependent receptor (fyuA) gene, DNA gyrase B (gyrB) gene and RNA polymerase sigma factor (rpoD) gene sequences placed it as a member of X. axonopodis 9.2 rep–PCR/DNA–DNA homology cluster close to X. perforans, X. alfalfae and X. euvesicatoria. Further elucidation of phylogenetic position of the test strains was achieved from a gyrB based tree considering sequences from 71 representative strains. Test strains were confirmed to be members of X. axonopodis. These had very narrow infectivity limited to Commiphora spp. Hence, we propose a novel pathovar, X. axonopodis pv. commiphoreae pv. nov. as the cause of gum oozing in guggal. Pathotype is DXA 01 = CFBP 7580 = LMG 26789.
Not Available
 
Date 2020-08-01T02:45:09Z
2020-08-01T02:45:09Z
2013-01-01
 
Type Research Paper
 
Identifier Samanta, J. N., Mandal, K. and Maiti, S. 2013. A novel pathovar of Xanthomonas axonopodis causes gumming of guggal (Commiphora wightii). European Journal of Plant Pathology 135: 115–125
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http://krishi.icar.gov.in/jspui/handle/123456789/38743
 
Language English
 
Relation Not Available;
 
Publisher European Foundation for Plant Pathology