Influences of light and darkness on l-phenylalanine ammonia-lyase activity of black locust (Robinia pseudoacacia) seedlings were studied. Light initiates both an increase in enzyme activity (or enzyme synthesis) and a subsequent decrease in activity. These dual influences of light create cyclic changes in l-phenylalanine ammonia lyase activity in continuous light. The cyclic changes in activity...

The photosynthetic procaryote Anacystis nidulans converts L-phenylalanine and L-tyrosine into benzoic acid and p-hydroxybenzoic acid, respectively. Results obtained with thylakoid fractions support the hypothesis that the reaction sequence is catalyzed by thylakoid-bound enzyme complexes consisting of phenylalanine ammonia-lyase and benzoate synthase of tyrosine ammonia-lyase and p-hydroxybenzo...

Abstract As a famous fruit worldwide, citrus is susceptible to green mold caused by Penicillium digitatum, which causes large economic losses every year. ε-Poly-l-lysine (ε-PL) novel preservative with strong inhibitory effects on fungi, and has the capacity induce disease resistance in fruit, but mechanism been reported rarely, especially citrus. In present study, 800 μg/mL ε-PL P. digitatum sp...

the interaction between root-colonizing pseudomonas fluorescens strain cha0mcherry and three wheat cultivars (bolani, roushan, forno) was studied as a phenomenon to be employed in the control of wheat leaf rust disease (puccinia triticina). cha0mcherry was inoculated using seed treatment method. the application of cha0mcherry reduced the number of pustules on leaves via inducing systemic resist...

Phenylalanine ammonia-lyase (PAL) is the first enzyme in phenylpropanoid pathway and plays a vital role adoption, growth, development plants but wheat its characterization still not very clear. Here, we report genome-wide identification of TaPAL genes analysis their transcriptional expression, duplication, phylogeny wheat. A total 37 that cluster into three subfamilies have been identified base...

As it was previously reported, black spot development in the skin of Hass avocado has been related to a decreased antioxidant defense system. The aim this study investigate effect different postharvest storage conditions on controlling targeting their system (non-enzymatic and enzymatic) skin. Four treatments (T1: regular air (RA) at 5 °C for 40 d; T2: controlled atmosphere (CA) 4 kPa O2 6 CO2 ...

Background: Flavonoids of Hypericum perforatum are important secondary metabolites which have been widely utilized in medicine for a range of purposes. The use of methyl jasmonate (MeJA) elicitation for the enhancement of flavonoid production in cell suspension culture of H. perforatum would be an efficient alternative method for the flavonoid production. Results: MeJA influenced the cells grow...