Tetranychus evansi Baker & Pritchard, 1960 (Tetranychidae) is a phytophagous mite with wide distribution and high importance for agriculture. This study reports the occurrence of T. in Nicotiana alata Link Otto, forgetiana Sander ex W. Watson (Solanaceae) their putative hybrids greenhouse Rio Grande do Sul state, Brazil. Different stages development were found N. hybrids.

A cDNA clone of unknown function, DEA1, was isolated from arachidonic acid-treated tomato (Solanum lycopersicum) leaves by differential display PCR. The gene, DEA1, is expressed in response to the programmed cell death-inducing arachidonic acid within 8 h following treatment of a tomato leaflet, 16 h prior to the development of visible cell death. DEA1 transcript levels were also affected by th...

Cocoa (Theobroma cacao L.) is a commodity produced in the developing countries of the tropics. It is mainly consumed in the middle and high income countries of the world’s temperate zone. Currently, over 50 countries are engaged in cocoa production and heavily rely only on cocoa exportation for their economic development, as this commodity contributes significantly to foreign exchange earnings....

the influence of salinity on the different polyamine fractions (free, conjugated, and bound) was compared in a natrophilic halophyte (beta vulgaris l. cv. ic) and a salt sensitive glycophyte (nicotiana rustica l. cv. basmas). low-level salinity (25 mm nacl) and high salinity (150 and 50 mm nacl for sugar beet and tobacco, respectively) were supplied in hydroponics. under low salinity shoot dry ...