نتایج جستجو برای: phytophthora soja
تعداد نتایج: 12500 فیلتر نتایج به سال:
Phytophthora borealis and Phytophthora riparia, identified in recent Phytophthora surveys of forest streams in Oregon, California and Alaska, are described as new species in Phytophthora ITS Clade 6. They are similar in growth form and morphology to P. gonapodyides and are predominantly sterile. They present unique DNA sequences, however, and differ in temperature/growth relations and geographi...
Phytophthora nicotianae is one of the most destructive plant pathogens affecting a variety of plants, causing black shank of tobacco, among several other devastating diseases. Herein, we assembled the mitochondrial genome of P. nicotianae and analyzed its gene content and genome structure, performed comparative mitochondrial genomics analysis, and assessed phylogenetic relationships among oomyc...
گونه های phytophthora drechsleri، p. cryptogea و p. erythroseptica بیمارگرهای گیاهی اُاُمیستی خویشاوندند و از نظر ریخت شناختی به یک دیگر شباهت دارند. برای تمایز این آرایه ها از یک دیگر و از سایر گونه هایی که صفات ریخت شناختی همگرا دارند، شیوه ای بر اساس واکنش زنجیره ای پلیمراز ساده و تودرتو ابداع شد. بدین منظور مجموعه ای از جدایه ها مربوط به میزبان های مختلف، که نماینده ی تنوع موجود در ژن های هست...
Newly discovered Phytophthora species include invasive pathogens that threaten trees and shrubs. We present draft genome assemblies for three isolates of Phytophthora kernoviae and one isolate of the EU2 lineage of Phytophthora ramorum, collected from outbreak sites in Scotland.
Downy mildews and root and foliar rots caused by Phytophthora are among the most destructive plant pathogens and therefore have attracted considerable attention during the past two decades. Although it has been realized that a close phylogenetic relationship exists, so far sharp distinction has been made between the obligate biotrophic downy mildews and the hemibiotrophic Phytophthora. In the s...
Phylogenetic relationships among 50 Phytophthora species and between Phytophthora and other oomycetes were examined on the basis of the ITS sequences of genomic rDNA. Phytophthora grouped with Pythium, Peronospora, and Halophytophthora, distant from genera in the Saprolegniales. Albugo was intermediate between these two groups. Unlike Pythium, Phytophthora was essentially monophyletic, all but ...
Oomycetes form a deep lineage of eukaryotic organisms that includes a large number of plant pathogens which threaten natural and managed ecosystems. We undertook a survey to query the community for their ranking of plant-pathogenic oomycete species based on scientific and economic importance. In total, we received 263 votes from 62 scientists in 15 countries for a total of 33 species. The Top 1...
The soybean aphid, Aphis glycines Matsumura, is a new pest of soybean, Glycine max (L.) Merr., in North America. It has become widespread on soybean in North America since it was first identified in the Midwest in 2000. Species of Rhamnus L. (buckthorn) are the primary hosts of A. glycines, and soybean is known as a secondary host. There is limited information about the secondary host range of ...
A combination of nuclear and chloroplast simple sequence repeats (SSRs) have been used to investigate the levels and pattern of variability detected in Glycine max and G. soja genotypes. Based on the analysis of 700 soybean genotypes with 115 restriction fragment length polymorphism (RFLP) probes, 12 accessions were identified that represent 92% of the allelic variability detected in this genep...
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