Cercospora kikuchii (Matsumato & Tomoyasu) M.W. Gardner Proceedings of the Indiana Academy of Science (). Cercospora kikuchii (T. Matsumoto & Tomoy.) M.W. Gardner, Proc. Indiana Acad. Sci.: 12 () [MB#]. Caused by a fungal pathogen, Cercospora kikuchii. Infection is favored by humid conditions and temperatures of 75 to 80 F or higher. Can be found throughout.

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Measures of molecular diversity number of haplotypes, H; haplotype diversity, H d ; nucleotide diversity, cerocspora average number of nucleotide diversity, k; and number of variable sites, S were estimated in DNAsp v5 [ 38 ]. We assumed the mutation rates for the exonic and intronic regions of the tub gene to be 1. Cercospora kikuchii is a fungal pathogen of soybeans which produces a photosensitizing phytotoxic polyketide metabolite, cercosporin.

Median—joining networks for kiiuchii intraspecific phylogenies. It is replaced each time there is a query done. Your preferences were successfully changed. Infection is favored by humid conditions and temperatures of 75 to 80 F or higher. In each lineage, such a scenario is likely if their members evolved on hosts that occupied distinct ecological or geographic ranges for an extended period and later were able to infect soybeans as modern agricultural practices introduced the exotic, susceptible host to their territories.

Lineage 1 was the most frequent in our collection Surprisingly, these clades had C. The estimated dates of divergence among the four lineages about 1 Mya suggest that lineage differentiation did not arise due to agriculturally-related events.


purple seed stain (Cercospora kikuchii)

Despite the difference, a previous phylogenetic study placed both C. Variability in susceptibility to leaf infection was detected in a greenhouse inoculation study Walters, b ; Walters, Lineage 1, which contained the ex-type strain of C.

Experimental infection of Nicotiana spp. Infected plants and seeds provide inoculum for the next soybean crop.

Cercospora Leaf Blight and Purple Seed Stain of Soybeans

Hereafter, a subset of sequences is referred to as a genealogical lineage see Bayesian Phylogeny section below. Benomyl sprays at 25 and 55 days after planting are also suggested Agarwal et al. I understand charges may apply for text messages. A Yule speciation process model was selected for tree prior.

Cercospora kikuchii

The fastest evolving gene cfp mutated about 20 times faster than the slowest evolving gene ITS. The pattern of multi-species arrangements associated with homoplasic symptoms is unlikely to be unique to CLB and PSS or to plant diseases only; therefore, as new models—including animal diseases—are probed within phylogenetic and phylogeographic frameworks, it will become more evident the extent to which this pattern repeats itself.

After all of the sequences were aligned, the ends of the alignments were trimmed to eliminate fragments that could not be obtained for all sequences. A second phylogenetic kikuchli investigated the relationships of Cercospora and 18 closely-related, congeneric species.


Inheritance of soybean resistance to purple seed stainSoybean Genet Newsl. To a certain extent, haplotype sharing took place between lineages 1 and 2 haplotypes A and B and lineages 1 and 3 haplotype M. Location Preference Edit Cancel Country: All products are trademarks of their manufacturers. As to lineage 4, it contains 23 isolates from our collection together with Cercospora cf.

For practical reasons we have kikuhcii not to translate all pages in several languages anymore because it was too heavy to maintain but some of the labels of the basic and advanced query pages are still available.

The cultures were obtained from either infected soybean leaves or purple stained seeds; isolation techniques followed protocols that were described elsewhere [ 61822 ].

In the United States delays in harvest did not affect the disease Wilcox et al. Seed germination may not be greatly reduced but infected seeds develop into weak seedlings sometimes there is a slow death and less productive plants. Most of the polymorphisms among the four lineages were concentrated within introns, which included indels, making sequence alignments difficult to achieve data not cercoepora.

Trees were sampled once every 20, generations. Srisombun S, Supapornhemin P.