Genetic diversity and population structure of <i>Clavibacter michiganensis</i> subsp. <i>nebraskensis</i>

Agarkova, Irina V.; Lambrecht, Patricia A.; Vidaver, Anne K.

doi:10.1139/w11-016

Cited by 26 publications

(18 citation statements)

References 21 publications

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“…nebraskensi s genotypes might also be a factor, but further work is needed to determine if this has occurred. 222 There was no mention in any of the recently published reports that the GR trait or glyphosate application is a contributing factor to the increase in Goss’s wilt. The report by Ruhl et al 225 noted that the first Indiana finds were on both field corn and popcorn.…”

Section: Effects Of Glyphosate On Plant Disease In Glyphosate-resistamentioning

confidence: 99%

Glyphosate Effects on Plant Mineral Nutrition, Crop Rhizosphere Microbiota, and Plant Disease in Glyphosate-Resistant Crops

Duke¹,

Lydon²,

Koskinen³

et al. 2012

J. Agric. Food Chem.

236

175

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Claims have been made recently that glyphosate-resistant (GR) crops sometimes have mineral deficiencies and increased plant disease. This review evaluates the literature that is germane to these claims. Our conclusions are: (1) although there is conflicting literature on the effects of glyphosate on mineral nutrition on GR crops, most of the literature indicates that mineral nutrition in GR crops is not affected by either the GR trait or by application of glyphosate; (2) most of the available data support the view that neither the GR transgenes nor glyphosate use in GR crops increases crop disease; and (3) yield data on GR crops do not support the hypotheses that there are substantive mineral nutrition or disease problems that are specific to GR crops.

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Section: Effects Of Glyphosate On Plant Disease In Glyphosate-resistamentioning

confidence: 99%

Glyphosate Effects on Plant Mineral Nutrition, Crop Rhizosphere Microbiota, and Plant Disease in Glyphosate-Resistant Crops

Duke¹,

Lydon²,

Koskinen³

et al. 2012

J. Agric. Food Chem.

236

175

View full text Add to dashboard Cite

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“…The cells are (i) rods of coryneform morphology, (ii) having B2γ-type cell wall peptidoglycan with the diaminobutyric acid MK-9 as the predominant menaquinone, (iii) phosphatidyglycerol and diphosphatidyglycerol as the basic polar lipids, and (iv) a high GC content of 72–74 mol% [1,2]. All of the subspecies are plant pathogens of important agricultural crops (attacking members of the Solanaceae , Poaceae , and Leguminosae ).…”

Section: Introductionmentioning

confidence: 99%

Comparative genomics of Clavibacter michiganensis subspecies, pathogens of important agricultural crops

Tambong

2017

PLoS ONE

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Subspecies of Clavibacter michiganensis are important phytobacterial pathogens causing devastating diseases in several agricultural crops. The genome organizations of these pathogens are poorly understood. Here, the complete genomes of 5 subspecies (C. michiganensis subsp. michiganensis, Cmi; C. michiganensis subsp. sepedonicus, Cms; C. michiganensis subsp. nebraskensis, Cmn; C. michiganensis subsp. insidiosus, Cmi and C. michiganensis subsp. capsici, Cmc) were analyzed. This study assessed the taxonomic position of the subspecies based on 16S rRNA and genome-based DNA homology and concludes that there is ample evidence to elevate some of the subspecies to species-level. Comparative genomics analysis indicated distinct genomic features evident on the DNA structural atlases and annotation features. Based on orthologous gene analysis, about 2300 CDSs are shared across all the subspecies; and Cms showed the highest number of subspecies-specific CDS, most of which are mobile elements suggesting that Cms could be more prone to translocation of foreign genes. Cms and Cmi had the highest number of pseudogenes, an indication of potential degenerating genomes. The stress response factors that may be involved in cold/heat shock, detoxification, oxidative stress, osmoregulation, and carbon utilization are outlined. For example, the wco-cluster encoding for extracellular polysaccharide II is highly conserved while the sucrose-6-phosphate hydrolase that catalyzes the hydrolysis of sucrose-6-phosphate yielding glucose-6-phosphate and fructose is highly divergent. A unique second form of the enzyme is only present in Cmn NCPPB 2581. Also, twenty-eight plasmid-borne CDSs in the other subspecies were found to have homologues in the chromosomal genome of Cmn which is known not to carry plasmids. These CDSs include pathogenesis-related factors such as Endocellulases E1 and Beta-glucosidase. The results presented here provide an insight of the functional organization of the genomes of five core C. michiganensis subspecies, enabling a better understanding of these phytobacteria.

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“…Documented differences in colony color, colony margin development, and bacteriocin production have been reported with Cmn (15,18). More recently, differences in the DNA makeup of Cmn have been reported (1). Research also shows differences in virulence among different isolates collected within the same state (8).…”

Section: Goss's Wilt and The Need For Weed Managementmentioning

confidence: 99%

Four Common Setaria Species are Alternative Hosts for Clavibacter michiganensis subsp. nebraskensis, Causal Agent of Goss's Bacterial Wilt and Blight of Corn

Langemeier¹,

Jackson-Ziems²,

Kruger

2014

Plant Health Progress

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Goss's bacterial wilt and blight, caused by Clavibacter michiganensis subsp. nebraskensis (Cmn), has reemerged as an important disease of Zea mays (corn) in the U.S. Midwest. Results from a 2011 multistate survey indicated that Setaria spp. (foxtail) were often present in corn fields with a history of Cmn. The objective of this research was to determine if Setaria spp. that are common in the Midwest are susceptible to infection by Cmn. In the greenhouse, seedlings of four Setaria spp., including S. viridis (green foxtail), S. faberi (giant foxtail), S. verticillata (bristly foxtail), and S. pumila (yellow foxtail), and Zea mays (Golden Cross Bantam sweet corn, GCB) were inoculated with a suspension of 1.0 × 107 bacteria cells. The trial was arranged in a randomized complete block design and repeated once. Percent of symptomatic leaf area was visually estimated eight days after inoculation. S. faberi exhibited the highest levels of disease among the four Setaria spp., with disease incidence similar to what was observed on Z. mays. S. viridis was the next most susceptible. Symptoms were also observed on S. viridis, S. verticillata, and were lowest for S. pumila. Bacterial streaming was confirmed microscopically and Cmn was reisolated from the four Setaria species. Results indicate that these four Setaria spp. are susceptible to Cmn, thus serving as potential sources of inoculum. Accepted for publication 1 February 2014. Published 28 April 2014.

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Genetic diversity and population structure of Clavibacter michiganensis subsp. nebraskensis

Cited by 26 publications

References 21 publications

Glyphosate Effects on Plant Mineral Nutrition, Crop Rhizosphere Microbiota, and Plant Disease in Glyphosate-Resistant Crops

Glyphosate Effects on Plant Mineral Nutrition, Crop Rhizosphere Microbiota, and Plant Disease in Glyphosate-Resistant Crops

Comparative genomics of Clavibacter michiganensis subspecies, pathogens of important agricultural crops

Four Common Setaria Species are Alternative Hosts for Clavibacter michiganensis subsp. nebraskensis, Causal Agent of Goss's Bacterial Wilt and Blight of Corn

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