Arctostaphylos pungens "Manzanita" is an important shrub in the southwestern USA, and northern and central Mexico. Manzanita bears apple-like fruit that is utilised for a range of edible products. Over the past two years, several foliar disease problems were noted on this host in the San José de Gracia region of Mexico. The aim of the present study was to elucidate their identity through the an...

In North America, spring black stem and leaf spot, caused by Phoma medicaginis, is one of the most important diseases of alfalfa (Medicago sativa). Symptoms appear initially as small, dark brown to black spots that eventually enlarge and on leaves the spots are associated with chlorosis and defoliation. The infection process of P. medicaginis was previously investigated on susceptible alfalfa g...

Carissa spinarum is one of the secondary advantage plants grown in dry-hot valleys in China, which can survive under stress conditions of high temperature and extreme low humidity. Here, we studied the physiological and proteomic changes of C. spinarum in response to 42 degrees C heat stress treatment in combination with drought stress. Dynamic changes in the leaf proteome were analyzed at four...

Alternariaster was erected in 2007 to accommodate Alternaria helianthi, a fungal species known to cause leaf spots on Helianthus annuus (sunflower). It was segregated from Alternaria based on conidial morphology. Recently an unknown alternaria-like dematiaceous fungus was found associated with leaf spots on Bidens sulphurea (yellow cosmos) in Brazil. Based on a multi-gene phylogeny of parts of ...

Propiconazole is one of the major triazole fungicide, use to treat the standing crops from the disease like leaf spot, powdery mildew and leaf and stem rust. The present work evaluates the impact of propiconazole on the DNA, RNA and protein contents of propiconazole resistant Pseudomonas aeruginosa PS-4 strain in different concentrations (10, 20 and 30 μg/l) and durations. Additionally, the exp...

BACKGROUND Leaf width is an important agricultural trait in maize. Leaf development is dependent on cell proliferation and expansion, and these processes exhibit polarity with respect to the longitudinal and transverse axes of the leaf. However, the molecular mechanism of the genetic control of seed vigor remains unknown in maize, and a better understanding of this mechanism is required. METH...

In studies on the induction of gene mutations by high energy radiation from the Bikini atom bomb, X-ray and other sources, a large number of seedling cultures have been grown for observation. Since January, 1949, maize seedling cultures have been observed by the use of filtered ultraviolet light. Normal seedlings viewed by ultraviolet light have a dull reddish-purple appearance due to the red f...

septoriosis is one of the most important disease in pistachio tree worldwide and is incited by several species of septoria among which s. pistacina islimited to mediterranea regions and recently reported on pistacia vera in golestan province of iran (aghajani et al. 2009. austr. plant dis. notes 4: 29-31). leaf samples of p. vera  from ghazvin (fig. 1) collected in october 2013, and samples fro...