Both the bene®cial and the adverse effects of nickel supplement on the N assimilation and growth of tomato plants were evaluated while either urea or nitrate was applied as the sole N source in the nutrient solution. The nickel concentration in the plant was related to that in the solution. Urea toxicity to the plants was reduced by the nickel supplement at 0.01 mg lÿ1, and no symptom of urea t...

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...

Recognition of microbe-associated molecular patterns (MAMPs), conserved structures typical of a microbial class, triggers immune responses in eukaryotes. This is accompanied by a diverse set of physiological responses that are thought to enhance defense activity in plants. However, the extent and mechanisms by which MAMP-induced events contribute to host immunity are poorly understood. Here we ...

in order to evaluate the effect of piriformospora indica fungi inoculation on antioxidant systems and photosynthetic pigments of stevia under salt stress, an experiment was conducted in a factorial based completely randomized design with four replications under in vitro culture conditions. factors include salinity at six levels (0, 50, 100, 150, 200 and 250 mm of nacl) and inoculation of mycorr...

Recent studies have introduced seed priming with H2O2 as an effective technique to alleviate abiotic stresses in plants. In the current study, accomplished at Faculty of Sciences, Shahrekord University, seeds of medicinal plant Artemisia aucheri were primed with H2O2 (0, 10, 50, 90 and 140 µM) and grown under salt stress (0 and 150 mM NaCl) for one month. Results showed a decrease in H2O2 and m...

Translocation of (14)C-photosynthates to mycorrhizal (+ +), half mycorrhizal (0+), and nonmycorrhizal (00) split-root systems was compared to P accumulation in leaves of the host plant. Carrizo citrange seedlings (Poncirus trifoliata [L.] Raf. x Citrus sinensis [L.] Osbeck) were inoculated with the vesicular-arbuscular mycorrhizal fungus Glomus intraradices Schenck and Smith. Plants were expose...