نتایج جستجو برای: Septoria

تعداد نتایج: 561  

2013
G.J.M. Verkley W. Quaedvlieg H.-D. Shin P.W. Crous

UNLABELLED Septoria is a large genus of asexual morphs of Ascomycota causing leaf spot diseases of many cultivated and wild plants. Host specificity has long been a decisive criterium in species delimitation in Septoria, mainly because of the paucity of useful morphological characters and the high level of variation therein. This study aimed at improving the species delimitation of Septoria by ...

2011
W. Quaedvlieg G.H.J. Kema J.Z. Groenewald G.J.M. Verkley S. Seifbarghi M. Razavi A. Mirzadi Gohari R. Mehrabi P.W. Crous

The Mycosphaerella complex is both poly- and paraphyletic, containing several different families and genera. The genus Mycosphaerella is restricted to species with Ramularia anamorphs, while Septoria is restricted to taxa that cluster with the type species of Septoria, S. cytisi, being closely related to Cercospora in the Mycosphaerellaceae. Species that occur on graminicolous hosts represent a...

2016
Linda Millyard Jack Lee Cunjin Zhang Gary Yates Ari Sadanandom

Mycosphaerella graminicola (Zymoseptoria tritici commonly known as Septoria), the causal agent of Septoria Leaf Blotch (STB), is considered one of the major threats to European wheat production. Previous studies have shown the importance of ubiquitination in plant defence against a multitude of pathogens. However the ubiquitination machinery in wheat is under studied, particularly E2 enzymes th...

2011
Ji-Hyun Park Mi-Jeong Park Silvia Wolcan Hyeon-Dong Shin

Septoria centellae associated with leaf spot of Centella asiatica is reported for the first time in Korea. The fungus is described and illustrated in detail. It is also compared with related species of Septoria present on Centella and Hydrocotyle spp. with taxonomic comments. Two monoconidial isolates from Jeju and Wando were successfully cultured and have been deposited in the Korean Agricultu...

2013
W. Quaedvlieg G.J.M. Verkley H.-D. Shin R.W. Barreto A.C. Alfenas W.J. Swart J.Z. Groenewald P.W. Crous

UNLABELLED Septoria represents a genus of plant pathogenic fungi with a wide geographic distribution, commonly associated with leaf spots and stem cankers of a broad range of plant hosts. A major aim of this study was to resolve the phylogenetic generic limits of Septoria, Stagonospora, and other related genera such as Sphaerulina, Phaeosphaeria and Phaeoseptoria using sequences of the the part...

2013
Pedro W. Crous William Quaedvlieg Kamil Sarpkaya Canan Can Ali Erkılıç

Several species of Septoria are associated with leaf and fruit spot of pistachio (Pistacia vera), though their identity has always been confused, making identification problematic. The present study elucidates the taxonomy of the Septoria spp. associated with pistachio, and distinguishes four species associated with this host genus. Partial nucleotide sequence data for five gene loci, ITS, LSU,...

2017
Lia S Arraiano James K M Brown

An association genetics analysis was conducted to investigate the genetics of resistance to Septoria tritici blotch, caused by the fungus Zymoseptoria tritici (alternatively Mycosphaerella graminicola), in cultivars and breeding lines of wheat (Triticum aestivum) used in the UK between 1860 and 2000. The population was tested with Diversity Array Technology (DArT) and simple-sequence repeat (SS...

Journal: رستنیها 2018

The genus Septoria includes important plant pathogens with worldwide distribution, commonly associated with leaf spots and stem cankers of a broad range of plant hosts. In this study, eight isolates of Septoria were recovered from leaves with leaf spot on four herbaceous and woody plants from Gilan, Ardebil, East and West Azerbaijan provinces in north and northwest of Iran. The isolates were st...

2002
James Brown Lia Arraiano Penny Brading Clare Ellerbrook Elaine Foster Tony Worland

Septoria tritici blotch is currently the major foliar disease of wheat in most of Europe, North Africa, South America, and several other parts of the world. Until recently, little was known about the genetics of resistance to this disease in comparison to, for example, the better-studied rust diseases and mildew. New sources of resistance and improved knowledge about the genetics of resistance ...

2007

Diseases can greatly lower wheat yield and grain quality. Leaf rust, Stagnospora (Septoria) glume blotch, Septoria leaf blotch, and powdery mildew have historically been the most damaging diseases on wheat in Alabama. Stripe rust has recently emerged in the Deep South as a very destructive disease of wheat. Field cropping history, cultivar selection, and weather patterns all have a tremendous i...

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