Comparison of Isomers of Fluorophenylalanine as Inhibitors of Ion Transport Across Barley Roots

1975 ◽  
Vol 2 (4) ◽  
pp. 659 ◽  
Author(s):  
RA Wildes ◽  
MG Pitman ◽  
N Schaefer
Keyword(s):  
Phenolic Compounds ◽  
Ion Transport ◽  
Phenylalanine Ammonia Lyase ◽  
Cl Transport ◽  
Lyase Activity ◽  
Phenylalanine Ammonia Lyase Activity

Earlier reports of inhibition of Cl- transport across the root to the xylem by p-fluorophenylalanine (p-FPA) were used to support the need for continual production of a protein used as a carrier. It is now shown that o-FPA and m-FPA are also effective as inhibitors of transport, ruling out the possibility that p-FPA was acting by inhibition of phenylalanine ammonia-lyase activity and so changing endogenous concentration of phenolic compounds.

scholarly journals Changes in the phenylalanine ammonia lyase activity, total phenolic compounds, and flavonoids in Prosopis glandulosa treated with cadmium and copper

2018 ◽  
Vol 90 (2) ◽  
pp. 1465-1472 ◽  
Author(s):  
DANIEL GONZÁLEZ-MENDOZA ◽  
ROSALBA TRONCOSO-ROJAS ◽  
TANIA GONZALEZ-SOTO ◽  
ONECIMO GRIMALDO-JUAREZ ◽  
CARLOS CECEÑA-DURAN ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Phenylalanine Ammonia Lyase ◽  
Prosopis Glandulosa ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Lyase Activity ◽  
Phenylalanine Ammonia Lyase Activity

scholarly journals Effects of Temperature on Ethylene-induced Phenylalanine Ammonia Lyase Activity and Russet Spotting in Harvested Iceberg Lettuce

1995 ◽  
Vol 120 (1) ◽  
pp. 84-87 ◽  
Author(s):  
M.A. Ritenour ◽  
M.J. Ahrens ◽  
M.E. Saltveit
Keyword(s):  
Phenolic Compounds ◽  
Phenylalanine Ammonia Lyase ◽  
Rapid Decrease ◽  
Effect Of Temperature ◽  
Pal Activity ◽  
Iceberg Lettuce ◽  
Lyase Activity ◽  
Lag Period ◽  
Effects Of Temperature ◽  
Phenylalanine Ammonia Lyase Activity

Experiments were conducted to study the effect of temperature on the ethylene inducibility of phenylalanine ammonia lyase (PAL, EC 4.3.1.5) activity and the development of russet spotting (RS) in Iceberg lettuce (Lactucu sutiva L.). Tissue exposed to ethylene and held at 15 or 20C showed earlier hut lower peaks in PAL activity than tissue held at 5C. Accumulation of total soluble phenolic compounds, and the development of RS paralleled increases in PAL activity after a short lag period. Lettuce tissue transferred from 5 to 15C after 1 to 3 days showed later hut higher peaks in PAL activity than tissue continuously held at 15C. Transferring ethylene-exposed tissue to 0C before RS symptoms developed greatly limited further rise in PAL activity and RS development. Discontinuing ethylene exposure after 4 days resulted in a rapid decrease in PAL activity. Lettuce tissue exposed to ethylene for 4 days and then transferred from 5 to 0C after the development of moderate RS symptoms showed no difference in RS after 8 days compared to tissue stored continuously at 5C.

Sign in / Sign up

Export Citation Format

Share Document