Differential induction of phenylalanine ammonia-lyase activity in date palm roots in response to inoculation with Fusarium oxysporum f. sp. albedinis and to elicitation with fungal wall elicitor

Modafar, Cherkaoui El; Tantaoui, A.; Boustani, E. El

doi:10.1078/0176-1617-00258

Cited by 31 publications

(15 citation statements)

References 44 publications

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“…All of these activities could efficiently increase plant nutritional intake, thus favoring the plant's growth and yield and the synthesis of secondary metabolites (Hamilton et al 2001;Barretti et al 2008). However, compared with the direct infection with fungus, active ingredients of an endophytic fungal elicitor sometimes consist of polysaccharides and/or fungal cell wall components (Fang et al 2009b) which may be absorbed and/or recognized by the plant and its elicitor receptors on plasma membranes (Modafar et al 2001). Through a series of signal transduction pathways, the plant gradually responds to the elicitor's stimulus (Zhao et al 2005).…”

Section: Discussionmentioning

confidence: 99%

Comparison of the effects of fungal endophyte Gilmaniella sp. and its elicitor on Atractylodes lancea plantlets

Dai

Cao

et al. 2011

World J Microbiol Biotechnol

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The effects of the endophytic fungus Gilmaniella sp. and its elicitor on the defense and metabolic responses of host plants Atractylodes lancea were investigated, in order to understand how to utilize endophytic fungi and their elicitor resources better. The results showed that the promotion effect of the fungus on the growth of host plantlets was much better than that of its elicitor. Both fungus and elicitor enhanced defense-related enzyme activities. In fungus-inoculated groups, phenylalanine ammonia lyase and polyphenol oxidase activities increased slowly, and reached a maximum level during the later stages, whereas peroxidase activity peaked in the first few days. Additionally, the activities of chitinase and β-1,3-glucanase were significantly higher than those of the control plants. In elicitor-treated groups, however, most of the enzymes were activated during the early stage, and their highest levels were generally lower than those of the fungus-inoculated groups. Compared with the elicitor, fungal infection improved the photosynthetic rate of the host, and increased carbohydrate levels as well as chlorophyll content in host leaves. The total content of the four main components of volatile oil was also increased in elicitor-treated groups, but there was no particular pattern in this increase. Meanwhile, in the fungus-inoculated groups, the content of atractylone significantly increased with time, while the content of β-eudesmol decreased. These results indicated that fungal elicitor could substantially improve the total content of volatile oil, while the fungus could more effectively enhance the quality of herbal medicines.

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Section: Discussionmentioning

confidence: 99%

Comparison of the effects of fungal endophyte Gilmaniella sp. and its elicitor on Atractylodes lancea plantlets

Dai

Cao

et al. 2011

World J Microbiol Biotechnol

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“…A similar effect was also observed in date palm roots, carrot cell suspension cultures, Rubus fruticosus cell suspension cultures, and Taxus chinensis on treatments with elicitor preparation from Fusarium spp. (Marinelli et al 1990;Modafar et al 2001;Yu et al 2001;Yuan et al 2001Yuan et al , 2002bNita-Lazar et al 2004 Although the addition of culture filtrate, both autoclaved and filter sterilized, resulted in growth-promoting effect on hairy roots in suspension cultures, the increase in hairy root dry cell weight was more significant in case of filter-sterilized culture filtrate. The maximum increase of 1.4-fold (21.8 g/L) in plant cell growth was achieved upon addition of filter-sterilized culture filtrate from decline phase of P. indica at a concentration of 2 % (v/v) for an exposure time of 96 h (Table 7.3).…”

Section: Effect Of Culture Filtrate Cell Extract and Live Cells Of mentioning

confidence: 95%

Effect of Piriformospora indica on Enhanced Biosynthesis of Anticancer Drug, Podophyllotoxin, in Plant Cell Cultures of Linum album

2013

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“…Among these barriers, one of the methods of protection depends on an increase in the activity of enzymes of the phenolic syntheses pathways, particularly peroxidase, polyphenol oxidase and phenyl alanine ammonia lyase. These enzymes are known to play a role in conferring resistance to plant pathogens in numerous diseases (Modafar et al 2001;Raj et al 2006;Koc & Uston 2011;Xu et al 2011;Ngazde et al 2012). The increase in these enzymes is elicited during the process of infection/pathogenesis (Modafar et al 2001;Nankeu et al 2004;Koc & Uston 2011;Ashry and Mohammad 2012) or during introduction of foreign material to the plant host system (Li et al 2000;Conrath et al 2002;Gerasimova et al 2005).…”

Section: Introductionmentioning

confidence: 95%

“…These enzymes are known to play a role in conferring resistance to plant pathogens in numerous diseases (Modafar et al 2001;Raj et al 2006;Koc & Uston 2011;Xu et al 2011;Ngazde et al 2012). The increase in these enzymes is elicited during the process of infection/pathogenesis (Modafar et al 2001;Nankeu et al 2004;Koc & Uston 2011;Ashry and Mohammad 2012) or during introduction of foreign material to the plant host system (Li et al 2000;Conrath et al 2002;Gerasimova et al 2005). Heil and Bostock (2002) reported systemic induced resistance in plants against pathogens as a widespread phenomenon elicited by a local infection, where plants respond with a salicylic-dependent signaling cascade that leads to the systemic expression of a broad spectrum and long-lasting disease resistance that was efficient against fungi, bacteria and viruses.…”

Section: Introductionmentioning

confidence: 95%

Activity of the phenolic pathway’s enzymes influenced by resistance-inducing chemicals in tomato plant

Raut

Borkar

2015

Israel J Plant Sci

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Chemical elicitors, namely salicylic acid (SA), β-amino butyric acid (BABA), chitosan (CHT) and 2,6-dicholoroisonicotinic acid (INA), are known to play a role in the induction of plant resistance to pathogens by increasing the activity of enzymes of phenolic synthesis pathways such as peroxidase, polyphenol oxidase and phenyl alanine ammonia lyase. These chemical elicitors applied to tomato as an 8 h seed treatment, 2 h seedling treatment and seed plus seedling treatment increased the activity of peroxidase, polyphenol oxidase and phenyl alanine ammonia lyase. The highest increase in peroxidase and phenyl alanine ammonia lyase activity was induced by the seed plus seedling treatment with 15 mM β-amino butyric acid. The increase in these enzyme activities was 70.5% and 39.3% higher, respectively, over control, whereas the highest increase in polyphenol oxidase activity was induced by the seed plus seedling treatment with 1.5 mM salicylic acid. Polyphenol oxidase activity increased 137.9% compared to the non-treated control. Similarly, seed treatment as well as seedling treatment with the elicitors particularly salicylic acid, β-amino butyric acid and chitosan elicited increased activity of peroxidase, polyphenol oxidase and phenyl alanine ammonia lyase of the phenolic syntheses pathways, which are known to be the basic components of the resistance induction mechanism.

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Differential induction of phenylalanine ammonia-lyase activity in date palm roots in response to inoculation with Fusarium oxysporum f. sp. albedinis and to elicitation with fungal wall elicitor

Cited by 31 publications

References 44 publications

Comparison of the effects of fungal endophyte Gilmaniella sp. and its elicitor on Atractylodes lancea plantlets

Comparison of the effects of fungal endophyte Gilmaniella sp. and its elicitor on Atractylodes lancea plantlets

Effect of Piriformospora indica on Enhanced Biosynthesis of Anticancer Drug, Podophyllotoxin, in Plant Cell Cultures of Linum album

Activity of the phenolic pathway’s enzymes influenced by resistance-inducing chemicals in tomato plant

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