A full-length cDNA copy of the genome of Potato leafroll virus (PLRV) was introduced into the genome of tobacco and potato plants by Agrobacterium tumefaciens-mediated transformation. Transgenic lines were obtained in which the transgene was readily detected by PCR with DNA extracted from T(1) tobacco seedlings and clonally multiplied potato plants. PLRV-specific genomic and sub- genomic RNAs, ...

Photoacclimatory responses of the seagrass Zostera marina in the intertidal and subtidal zones were investigated by measuring chlorophyll a fluorescence parameters, photosynthetic pigments, leaf δ13C values, and shoot morphology in two bay systems. Intertidal plants had higher carotenoid concentrations than subtidal plants to avoid photodamage under excess light conditions during the day. The m...

Plants use many strategies to defend themselves against animals that eat plants, also called herbivores. One clever way some myrmecophytes, do this is by teaming up with ants. Myrmecophytes are plants have evolved close relationships In return for protection from herbivores, myrmecophytes provide ants food and/or shelter. Sounds like a great deal, right? Yes, but sometimes working can be tricky...

The stress resistance of plants can be enhanced by regulating the expression of multiple downstream genes associated with stress resistance. We used the Agrobacterium method to transfer the tomato jasmonic ethylene responsive factors (JERFs) gene that encodes the ethylene response factor (ERF) like transcription factor to the genome of a hybrid poplar (Populus alba x Populus berolinensis). Eigh...

Determination of the most important problems on medicinal plants in Iran in relation to Education, Management, Research and Development and Domestication of endemic and exotic medicinal plants. This study was a measuremental study in 2002 based on 36 filled questionnaire distributed among researchers and professionals in Iran. - 89 percent of researchers and professionals believed in a lack of ...

mixed infection of plants with more than one virus results in different types of interactions. interaction between two recently identified lettuce infecting viruses in iran, lettuce x potexvirus (levx) and rubus chlorotic mottle sobemovirus (rucmv), was studied on co-infected chenopodium murale and chenopodium quinoa plants. plants were mechanically inoculated with either levx, rucmv or both. c...