The goal of this study was to identify the zoysiagrass rust pathogens and analyze differences in rust-resistant rust-susceptible Zoysia japonica germplasm upon inoculation. Based on assessment spore morphology 18S ribosomal DNA (rDNA) molecular identification, pathogen identified as Puccinia zoysiae Diet. development mycelium, rate spreading, timing production were more delayed (RR) genotype th...

M any destructive crop diseases are caused by filamentous microbes from the kingdoms Fungi (e.g., ascomycetes and basidomycetes) and Stramenopila (oomycetes). Many of these pathogens exploit plants by extracting nutrients from living plant cells (biotrophy) (1). In some cases, biotrophic pathogens have evolved to a state of absolute dependency on their hosts. These obligate biotrophs have lost ...

Motivated by an agriculture case study, we discuss how to learn functions able to predict whether the value of a continuous target variable will be greater than a given threshold. In the application studied, the aim was to alert on high incidences of coffee rust, the main coffee crop disease in the world. The objective is to use chemical prevention of the disease only when necessary in order to...

Background The genus Eucalyptus has many species that are well adapted to a wide range of environmental conditions in Brazil. However, in some areas diseases are a limiting factor, among which the Eucalyptus rust caused by Puccinia psidii Winter stands out as a destructive pathogen of the Myrtacea. The growth of plants with high levels of infection is severely compromised and these plants end u...

The poplar leaf rust fungus, Melampsora larici-populina has been established as a tree-microbe interaction model. Understanding the molecular mechanisms controlling infection by pathogens appears essential for durable management of tree plantations. In biotrophic plant-parasites, effectors are known to condition host cell colonization. Thus, investigation of candidate secreted effector proteins...

Many studies on remote sensing monitoring of plant diseases have been conducted. Remote sensing (RS) has played an important role in monitoring some kinds of plant diseases and making decisions for the management of the diseases. Progress on remote sensing monitoring of wheat stripe rust in China was summarized from four aspects including remote sensing monitoring stripe rust of single wheat le...

mained effective in North America longer than 5 yr after the resistance genes were released in pure-line Integrating selection for agronomic performance and quantitative cultivars (Holland, 1997). Monogenic resistances can be resistance to crown rust, caused by Puccinia coronata Corda var. avenae W.P. Fraser & Ledingham, in oat (Avena sativa L.) requires overcome rapidly by new races of the pat...