Mechanism of growth amelioration of triclosan-stressed tobacco (Nicotiana tabacum) by endogenous salicylic acid

2021 ◽  
pp. 117032
Author(s):  
Danliu Peng ◽  
Anran Liu ◽  
Wenjing Wang ◽  
Yue Zhang ◽  
Zichen Han ◽  
...  
2006 ◽  
Vol 26 (3) ◽  
pp. 291-301 ◽  
Author(s):  
Jiqiang Yao ◽  
Bethany Huot ◽  
Catherine Foune ◽  
Harshavardhan Doddapaneni ◽  
Alexander Enyedi

Planta ◽  
2011 ◽  
Vol 233 (5) ◽  
pp. 895-910 ◽  
Author(s):  
Srijani Ghanta ◽  
Dipto Bhattacharyya ◽  
Ragini Sinha ◽  
Anindita Banerjee ◽  
Sharmila Chattopadhyay

2017 ◽  
Vol 1 (1) ◽  
pp. 16-19 ◽  
Author(s):  
Nurul Izzah Abdul Halim ◽  
Ing Chia Phang

1998 ◽  
Vol 88 (7) ◽  
pp. 692-697 ◽  
Author(s):  
Hyung-il Lee ◽  
Ilya Raskin

Salicylic acid (SA) is a key regulatory component of disease resistance in plants. In tobacco mosaic virus (TMV)-inoculated tobacco (Nicotiana tabacum cv. Xanthi-nc NN genotype), newly synthesized SA is converted primarily to SA 2-O-β-D-glucoside (SAG) and glucosyl salicylate (GS), a relatively minor metabolite. Similar patterns in the formation of GS and SAG were observed in tobacco inoculated with Pseudomonas syringae pv. phaseolicola, suggesting the accumulation of two glucosylated metabolites is a general phenomenon in tobacco plants. After SA infiltration, GS was synthesized rapidly, reached a maximal level at 6 h, declined, and remained relatively constant for at least 24 h. In contrast, SAG content increased gradually after SA treatment. Our in vitro and in vivo data suggest that a high concentration of free SA triggers transient formation of GS and continuous accumulation of SAG, which is a more stable metabolite of SA. The two distinct SA glucosyltransferases catalyzed the formation of GS and SAG, respectively. The activities of these enzymes were enhanced by TMV or P. syringae pv. phaseolicola inoculation or SA treatment and were found in different fractions of gel filtration chromatography.


2009 ◽  
Vol 64 (11-12) ◽  
pp. 869-874 ◽  
Author(s):  
Rawia Zayed ◽  
Michael Wink

Hairy root cultures of Nicotiana tabacum were set up by excised root tips with Agrobacterium rhizogenes. The successful transformation was confirmed by analyzing rolC and virC genes using polymerase chain reaction (PCR). Hairy root cultures were employed to study the formation of pyridine alkaloids, mainly nicotine. The transformed cultures were incubated with potential elicitors, such as methyljasmonate, quercetin and salicylic acid, in order to stimulate the biosynthesis of pyridine alkaloids. Profile and amounts of pyridine alkaloids were analyzed using capillary GLC-MS. Treatment of the cultures with methyljasmonate (50 μM) increased the alkaloid accumulation ca. 7-fold up to a level of 0.58 mg/g fresh weight as compared to untreated controls. Quercetin (200 μM) enhanced the alkaloid production ca. 4-fold (0.34 mg/g fresh weight) within 24 h. In contrast salicylic acid in all tested concentrations decreased the alkaloid level to 1 μg/g fresh weight. Also the inhibitory effect of salicylic acid on the elicitation effect of methyljasmonate and quercetin was investigated.


PLoS ONE ◽  
2010 ◽  
Vol 5 (1) ◽  
pp. e8977 ◽  
Author(s):  
Arantza Rico ◽  
Mark H. Bennett ◽  
Silvia Forcat ◽  
Wei E. Huang ◽  
Gail M. Preston

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