miR1444s are functionally significant miRNAs targeting polyphenol oxidase (PPO) genes for cleavage. MIR1444 genes were reported only in Populus trichocarpa. Through the computational analysis of 215 RNA-seq data, four whole genome sequences of Salicaceae species and deep sequencing of six P. trichocarpa small RNA libraries, we investigated the origin and evolution history of MIR1444s. A total o...

Pyrenophoratritici-repentis is the causal agent of tan spot. According to their ability to produce necrosis and/or chlorosis on a set of four differential bread wheats, the isolates of this fungus are currently grouped into eight races. When durum wheat genotypes were added to the differential set, a new virulence type was identified in Algeria. The isolates showing this virulence pattern are u...

Abstract Leaf blotch diseases (LBD), such as Septoria nodorum bloch ( Parastagnospora ), tritici Zymoseptoria ) and Tan spot Pyrenophora tritici-repentis can cause severe yield losses (up to 50%) in Norwegian spring wheat Triticum aestivum are mainly controlled by fungicide applications. A forecasting model predict disease risk be an important tool optimize control. The association between spec...

Abstract Reduced tillage is considered as one of the main tools to save biological diversity; however, it increases pressure diseases, including wheat leaf blotches. The aim present study was clarify impact reduced soil on development winter blotches in different schemes crop rotation. growing technologies severity disease evaluated a two-factorial experiment: A – system, and B combinations pre...

Tan spot, one of the most important diseases of wheat, is caused by Pyrenophora tritici-repentis, a necrotrophic fungus which survives in wheat straw. Methods of disease control include fungicide application, crop rotation, and the use of resistant cultivars; however, in Brazil there are no cultivars in the market with a good level of resistance. In North America, a system of race identificatio...

1 Introduction 2 Advantages of using M. truncatula to study resistance to fungal necrotrophs 3 Fungal pathogens of M. truncatula 4 New pathogens and isolate validation 5 References 1 Introduction Fungal diseases in plants are almost exclusively members of the phylum Ascomycota and subphylum Pezizomycotina. All common crop plants are susceptible to fungal disease of one kind or another. Spore pr...