scholarly journals Production of Salicylic Acid Precursors Is a Major Function of Phenylalanine Ammonia-Lyase in the Resistance of Arabidopsis to Peronospora parasitica

1996 ◽  
Vol 8 (2) ◽  
pp. 203 ◽  
Author(s):  
Brigitte Mauch-Mani ◽  
Alan J. Slusarenko
Keyword(s):  
Salicylic Acid ◽  
Phenylalanine Ammonia Lyase ◽  
Peronospora Parasitica ◽  
Major Function

scholarly journals Postharvest Quality of Cut Roses With the Application of Salicylic Acid

2018 ◽  
Vol 10 (8) ◽  
pp. 397
Author(s):  
Sérgio Miguel Mazaro ◽  
Edson Bertoldo ◽  
Nean Locatelli Dalacosta ◽  
Fabiana Chiamulera Borsatti ◽  
Mycheli Preuss da Cruz ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Defense Mechanisms ◽  
Phenylalanine Ammonia Lyase ◽  
Postharvest Quality ◽  
Fresh Matter ◽  
Leaf Chlorophyll ◽  
Biochemical Analyses ◽  
Stem Curvature ◽  
Lower Stem

The objective of this work was to evaluate the effect of the application of salicylic acid (SA) on the maintenance of quality and longevity of cut roses cv. Vega. Cut roses were kept in a vase solution of SA and water at concentrations of 0; 0.5; 1.0; 1.5 and 2.0 mM. All treatments were kept at 8±2 oC for 96 hours, simulating storage in flower shops; the flowers were then evaluated regarding loss of fresh matter and leaf chlorophyll content and were transferred to beakers containing distilled water at 25±2 ºC for more 144 hours, simulating shelf life. At 24, 48, 72 and 96 hours from the beginning of the experiment, biochemical analyses of total proteins and the activity of the phenylalanine ammonia-lyase (PAL) and peroxidases (PO) were performed. Visual analyses were performed (stem curvature, turgescence and petal darkening) every 48 hour intervals until the end of the experiment. The treatments with SA allowed the maintenance of post-harvest quality, reducing the loss of fresh matter mass, lower stem curvature, greater turgescence and less darkening of the petals. The results showed that the application of SA increased total protein contents and FAL, which characterizes the activation of plant defense mechanisms to the senescence process.

The effect of salicylic acid on phenylalanine ammonia-lyase and stilbene synthase gene expression in Vitis amurensis Cell Culture

2010 ◽  
Vol 57 (3) ◽  
pp. 415-421 ◽  
Author(s):  
K. V. Kiselev ◽  
A. S. Dubrovina ◽  
G. A. Isaeva ◽  
Y. N. Zhuravlev
Keyword(s):  
Gene Expression ◽  
Cell Culture ◽  
Salicylic Acid ◽  
Phenylalanine Ammonia Lyase ◽  
Stilbene Synthase ◽  
Vitis Amurensis ◽  
Stilbene Synthase Gene

scholarly journals Salicylic Acid and NIM1/NPR1-Independent Gene Induction by Incompatible Peronospora parasitica in Arabidopsis

2001 ◽  
Vol 14 (10) ◽  
pp. 1235-1246 ◽  
Author(s):  
Gregory J. Rairdan ◽  
Nicole M. Donofrio ◽  
Terrence P. Delaney
Keyword(s):  
Salicylic Acid ◽  
Calcium Binding ◽  
Systemic Acquired Resistance ◽  
Linear Models ◽  
Expression Patterns ◽  
Acquired Resistance ◽  
Peronospora Parasitica ◽  
Glutathione S Transferase ◽  
Regulatory Pathways ◽  
Response Profiles

To identify pathogen-induced genes distinct from those involved in systemic acquired resistance, we used cDNA-amplified fragment length polymorphism to examine RNA levels in Arabidopsis thaliana wild type, nim1-1, and salicylate hydroxylase-expressing plants after inoculation with an incompatible isolate of the downy mildew pathogen Peronospora parasitica. Fifteen genes are described, which define three response profiles on the basis of whether their induction requires salicylic acid (SA) accumulation and NIM1/NPR1 activity, SA alone, or neither. Sequence analysis shows that the genes include a calcium binding protein related to TCH3, a protein containing ankyrin repeats and potential transmembrane domains, three glutathione S-transferase gene family members, and a number of small, putatively secreted proteins. We further characterized this set of genes by assessing their expression patterns in each of the three plant lines after inoculation with a compatible P. parasitica isolate and after treatment with the SA analog 2,6-dichloroisonicotinic acid. Some of the genes within subclasses showed different requirements for SA accumulation and NIM1/NPR1 activity, depending upon which elicitor was used, indicating that those genes were not coordinately regulated and that the regulatory pathways are more complex than simple linear models would indicate.

scholarly journals Induction of chalcone synthase and phenylalanine ammonia-lyase by salicylic acid and Colletotrichum lindemuthianum in common bean

2003 ◽  
Vol 15 (3) ◽  
pp. 129-134 ◽  
Author(s):  
Ângela Diniz Campos ◽  
Alfredo Gui Ferreira ◽  
Magdolna Maria Vozári Hampe ◽  
Irajá Ferreira Antunes ◽  
Nely Brancão ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Salicylic Acid ◽  
Common Bean ◽  
Phenylalanine Ammonia Lyase ◽  
Chalcone Synthase ◽  
Colletotrichum Lindemuthianum ◽  
Water Control ◽  
Leaf Extracts ◽  
The Common ◽  
Two Stages

The activities of the enzymes chalcone synthase (CHS) and phenylalanine ammonia-lyase (PAL) were measured in leaf extracts obtained from four cultivars of the common bean (AB 136, Rio Tibagi, Carioca and Macanudo). Two stages of plant development were examined: plantlets (V2) and the onset of blooming (R6). Initially, the plants were either treated with salicylic acid or inoculated with the delta race of Colletotrichum lindemuthianum (inductive fungus) and after three days they were evaluated for enzyme activity. Afterwards, all plants were inoculated (challenged) with the virulent pathotype 33/95 of C. lindemuthianum except for the water control. Five days later, the activities of PAL and CHS were evaluated. There were significant changes in the activities of both enzymes three days after treatment with salicylic acid or inductive fungus when compared to the control. Five days after inoculation with with the virulent pathotype 33/95 of C. lindemuthianum CHS activity in the Macanudo was similar to control plants that were not treated with salicylic acid or the inductive fungus but inoculated with 33/95 C. lindemuthianum. The increase in enzyme activity after challenge with 33/95 C. lindemuthianum was greatest for the salicylic acid treatment in the cultivar AB 136, followed by Rio Tibagi and Carioca.

scholarly journals Cooperative functioning between phenylalanine ammonia lyase and isochorismate synthase activities contributes to salicylic acid biosynthesis in soybean

2016 ◽  
Vol 212 (3) ◽  
pp. 627-636 ◽  
Author(s):  
M. B. Shine ◽  
Jung-Wook Yang ◽  
Mohamed El-Habbak ◽  
Padmaja Nagyabhyru ◽  
Da-Qi Fu ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Phenylalanine Ammonia Lyase ◽  
Isochorismate Synthase ◽  
Acid Biosynthesis

Stress enhances the gene expression and enzyme activity of phenylalanine ammonia-lyase and the endogenous content of salicylic acid to induce flowering in pharbitis

2014 ◽  
Vol 171 (11) ◽  
pp. 895-902 ◽  
Author(s):  
Kaede C. Wada ◽  
Kaori Mizuuchi ◽  
Aya Koshio ◽  
Kentaro Kaneko ◽  
Toshiaki Mitsui ◽  
...  
Keyword(s):  
Gene Expression ◽  
Enzyme Activity ◽  
Salicylic Acid ◽  
Phenylalanine Ammonia Lyase

Salicylic acid induced the expression of phenylalanine ammonia-lyase gene in grape berry

Plant Science ◽  
2005 ◽  
Vol 169 (5) ◽  
pp. 928-934 ◽  
Author(s):  
Peng-Fei Wen ◽  
Jian-Ye Chen ◽  
Wei-Fu Kong ◽  
Qiu-Hong Pan ◽  
Si-Bao Wan ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Phenylalanine Ammonia Lyase ◽  
Grape Berry ◽  
Phenylalanine Ammonia Lyase Gene
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