Environmental niche models (ENMs) have gained enormous popularity as tools to investigate potential changes in species distributions resulting from climate change and species introductions. Despite recognition that species interactions can influence the dynamics of invasion spread, most implementations of ENMs focus on abiotic factors as the sole predictors of potential range limits. Implicit i...

The appearance of the cactus moth Cactoblastis cactorum in Florida has roused concern over its possible effects on the Opuntia -rich areas of Mexico and the southwestern United States. In this paper we discuss the economic importance of Opuntia in Mexico and propose a method to predict the invasion of the alien species C. cactorum . In Mexico, the products derived from Opuntia are mainly human ...

Validated protocols for DNA purification and PCR amplification are reported for detection of Phytophthora cactorum in diseased strawberry plants. To remove PCR inhibitors, necrotic strawberry tissues were soaked in 5% alconox solution for >12 h before DNA extraction, and the extracted genomic DNA was embedded in an agarose gel chamber and subjected to electrophoresis. The purified DNA was ampli...

Crown rot (Phytophthora cactorum) causes significant economic losses in strawberry production. The best control strategy would be to use resistant cultivars, but polygenically inherited resistance makes the breeding of the garden strawberry (Fragaria × ananassa) challenging. The diploid wild strawberry Fragaria vesca Hawaii 4 genotype was shown previously to have resistance against crown rot. T...

Two methods to induce a symptomless infection of crown rot (Phytophthora cactorum) in stolons of three strawberry (Fragaria×ananassa) cultivars were evaluated. Spraying a 10−4 ml zoospore suspension was the most effective method, producing a mean infection rate of 12%. Meristem cultures were subsequently established from all of the inoculated stolons and tested eight weeks later for the presenc...

OF HABILITATION THESIS University of Agriculture, Cracow, Poland MORPHOLOGY AND SOME PHYSIOLOGICAL CHARACTERISTICS OF PHYTOPHTHORA CACTORUM (LEBERT ET COHN) SCHRÖTER AND PHYTOPHTHORA CITRICOLA SAWADA OCCURRING IN FOREST NURSERIES IN SOUTHERN POLAND

Due to at least 3 years of cultivation, Panax ginseng (ginseng) is susceptible being attacked by pathogens which severely affect its quality and yield. Compared with other diseases ginseng, Phytophthora blight caused cactorum (P. cactorum) can spread rapidly destroy almost the entire plant such as leaves, stems, roots. However, little research was focused on this area, how P. affected metabolic...

The syrphid genus Meromacrus is widespread in the Neotropics, but its presence Chile has been confirmed just recently. Adults pollinate, and larvae are saprophagous of vegetal materials. In this note, we report cactorum Ricarte et al. for first time from Chile. New data on adult habitats flower visitation also provided Meromacrus. were observed flowers cacti Opuntia ficus-indica, Cumulopuntia s...

Phytophthora is a microbial genus that includes species causing many diseases (Erwin and Ribeiro, 1996). These species infect and kill nearly all species of deciduous fruit trees. Phytophthora crown and root rots, which are caused mainly by P. cactorum, P. megasperma, P. citrophthora, P. cinnamomi, P. cambivora, P. syringae and P. cryptogea (Sarejanni, 1935; Kouyeas, 1971; Kouyeas, 1977; Flores...