Ultraviolet light and ozone stimulate accumulation of salicylic acid, pathogenesis-related proteins and virus resistance in tobacco

Yalpani, Nasser; Enyedi, Alexander J.; León, José; Raskin, Ilya

doi:10.1007/bf00201815

Cited by 380 publications

(232 citation statements)

References 27 publications

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“…This can be an important difference at antioxidative response to cold stress since cold tolerance of the varieties is different. Although the endogenous SA contents were decreased by the cold treatment in the present study, endogenous SA levels were increased by UV light, ozone (Yalpani et al 1994), salt (Hernandez et al 2000) and drought stress Figure 6. The effects of cold treatment on endogenous SA content in the leaves of two barley cultivars differing at cold tolerance.…”

Section: Effects Of Cold On Endogenous Sa Contentmentioning

confidence: 50%

Exogenous salicylic acid alleviates cold damage by regulating antioxidative system in two barley (Hordeum vulgareL.) cultivars

Mutlu

Atıcı

Nalbantoğlu

et al. 2016

Frontiers in Life Science

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In this work, the time-dependent effect of exogenous salicylic acid (SA) applied before cold stress was investigated on the regulation of antioxidative respond mechanisms in two barley (Hordeum vulgare L.) cultivars (Akhisar and Tokak) differed in cold tolerance. SA (0.1 mM) was applied to 7-days old barley seedlings growing under control conditions (20/18°C). After this application, the seedlings were transferred to cold conditions (7/5°C) at different times (7, 14, 21 and 28 days) for 3 days. Then, the contents of malondialdehyde (MDA), hydrogen peroxide (H 2 O 2 ) and the activities of antioxidant enzymes such as superoxide dismutase (SOD), catalase (CAT) and peroxidase (POX) were determined in the leaves (control, cold and SA + cold) from the seedlings harvested at 10, 17, 24 and 31 days. Moreover, the effect of cold stress was evaluated on the endogenous SA level at the both cultivars by comparing to control plants. The MDA content increased in the cold treatment while it decreased in the SA treatment at all the days studied at the both cultivars. The SA + cold treatment could have a variable effect on H 2 O 2 content at the tolerant barley (Tokak) while decreased its content at the sensitive cultivar (Akhisar). The SA + cold treatment could increase the activities of POX and SOD at both cultivars, but it increased the CAT activity at the tolerant cultivar while decreased at the sensitive cultivar. In addition, the content of endogenous SA was decreased by cold stress at all the days studied at the barley cultivars as compared to control plants. The results show that the SA treatment could be effective on the regulation of the parameters studied at cold conditions until 31 days after SA application, and the importance of exogenous SA treatment before cold stress. It was concluded that exogenous and endogenous SA could play an ameliorating role on cold tolerance by regulating reactive oxygen species and the activities of antioxidative enzymes in both cold-sensitive and cold-tolerant cultivars of barley. ARTICLE HISTORY

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Section: Effects Of Cold On Endogenous Sa Contentmentioning

confidence: 50%

Exogenous salicylic acid alleviates cold damage by regulating antioxidative system in two barley (Hordeum vulgareL.) cultivars

Mutlu

Atıcı

Nalbantoğlu

et al. 2016

Frontiers in Life Science

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“…By using the IF and not C.fulvum infections as the challenge, we could ascertain the dose dependency of each activated biochemical response. Markers for oxidative stress wc're particularly interesting, since a large body of evidence indicates that the formation of ROIs is one of the earliest measurable consequences of pathogen attack and may be involved in subsequent defense signaling (Levine et al, 1994;Mehdy, 1994;Yalpani et al, 1994;Baker and Orlandi, 1995). The onset of each response was both Cf-Avr gene dependent and IF dose dependent, whereas high humidity reduced the magnitude of the responses.…”

Section: Effects Of If On the Activities Of Antioxidant Enzymes And Lmentioning

confidence: 99%

Involvement of Reactive Oxygen Species, Glutathione Metabolism, and Lipid Peroxidation in the Cf-Gene-Dependent Defense Response of Tomato Cotyledons Induced by Race-Specific Elicitors of Cladosporium fulvum

1996

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The chronological order of responses to Cladosporium fulvum (Cooke) (Cf) race-specific elicitors was assessed in cotyledons of three near-isogenic tomato (Lycopersicon esculentum Mill.) lines carrying either Cf-9 or Cf-2 or no Cf gene. The responses observed were dependent on the presence of a Cf gene, Avr-gene product dose injected, and the relative humidity (RH) of the growth chamber. At ambient RH, superoxide formation and lipid peroxidation occurred after 2 h (Cf9) and 4 h (Cf2). At elevated RH (98%) and at lower avirulence elicitor dose, Cf-Avr-dependent lipid peroxidation was considerably attenuated. Significant electrolyte leakage occurred by 18 h but only at the lower RH. Total glutathione levels began to increase 2 to 4 h and 4 to 8 h after challenge of Cf9 and Cf2 cells, respectively, and by 48 h reached 665 and 570% of initial levels. A large proportion of this accumulation (87%) was as oxidized glutathione. When the RH was increased to 98%, increases in glutathione levels were strongly attenuated. lncreased lipoxygenase enzyme activity was detected 8 h postchallenge in either incompatible interaction. These results indicate that the activation of the Cf-Avr-mediated defense response results in severe oxidative stress.Early events during the interaction between a specialized pathogen and its host ultimately determine whether the attempted infection succeeds or fails. Plant-pathogen interactions often exhibit race-cultivar specificity. To explain this, the "gene-for-gene" hypothesis has been proposed (Flor, 1946), wherein incompatibility requires the presence of both a dominant plant resistance ( X ) gene and a complementary dominant pathogen avirulence (Aur) gene (Gabriel and Rolfe, 1990;Keen, 1990).The interaction between the fungal pathogen Cladosporium fuluum (syn. Fulua fulua [Cooke] Cif.) and tomato (Lycopersicon esculentum Mill.) provides an excellent experThis work was supported by a Glasstone research fellowship to M.J.M. and the Gatsby Charitable Foundation to K

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“…Similar proteins, endo-P-1,3-glucanases, endochitinases, and TLPs, are known to be related to the mechanism for plant disease resistance (Carr and Klessig, 1989;Bol et al, 1990;Collinge et al, 1993;Stintzi et al, 1993) and are therefore classified as PR proteins. Proteins similar to PR proteins are also induced by other conditions unrelated to pathogen induction, such as ethylene (Boller et al, 1983), UV light (Yalpani et al, 1994), ozone (Ernst et al, 1992;Karenlampi et al, 1994;Yalpani et al, 1994), high salt (Esaka et al, 1994), heat (Margis-Pinheiro et al, 1994), phytotoxic metals (Jacobsen et al, 1992), and wounding (Zhang and Punja, 1994). Cold-induced accumulation of chitinase has been observed in barley (Tronsmo et al, 1993) and bermudagrass (Gatschet et al, 1996).…”

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confidence: 99%

Immunolocalization of Antifreeze Proteins in Winter Rye Leaves, Crowns, and Roots by Tissue Printing

et al. 1996

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During cold acclimation, antifreeze proteins (AFPs) that are similar to pathogenesis-related proteins accumulate in the apoplast of winter rye (Secale cereale L. cv Musketeer) leaves. AFPs have the ability to modify the growth of ice. To elucidate the role of AFPs in the freezing process, they were assayed and immunolocalized in winter rye leaves, crowns, and roots. Each of the total soluble protein extracts from cold-acclimated rye leaves, crowns, and roots exhibited antifreeze activity, whereas no antifreeze activity was observed in extracts from nonacclimated rye plants. Antibodies raised against three apoplastic rye AFPs, corresponding to a glucanase-like protein (CLP, 32 kD), a chitinase-like protein (CLP, 35 kD), and a thaumatin-like protein (TLP, 25 kD), were used in tissue printing to show that the AFPs are localized in the epidermis and in cells surrounding intercellular spaces in cold-acclimated plants. Although GLPs, CLPs, and TLPs were present in nonacclimated plants, they were found in different locations and did not exhibit antifreeze activity, which suggests that different isoforms of pathogenesis-related proteins are' produced at low temperature. The location of rye AFPs may prevent secondary nucleation of cells by epiphytic ice or by ice propagating through the xylem. l h e distributions of pathogenesis-induced and cold-accumulated CLPs, CLPs, and TLPs are similar and may reflect the common pathways by which both pathogens and ice enter and propagate through plant tissues.

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Ultraviolet light and ozone stimulate accumulation of salicylic acid, pathogenesis-related proteins and virus resistance in tobacco

Cited by 380 publications

References 27 publications

Exogenous salicylic acid alleviates cold damage by regulating antioxidative system in two barley (Hordeum vulgareL.) cultivars

Exogenous salicylic acid alleviates cold damage by regulating antioxidative system in two barley (Hordeum vulgareL.) cultivars

Involvement of Reactive Oxygen Species, Glutathione Metabolism, and Lipid Peroxidation in the Cf-Gene-Dependent Defense Response of Tomato Cotyledons Induced by Race-Specific Elicitors of Cladosporium fulvum

Immunolocalization of Antifreeze Proteins in Winter Rye Leaves, Crowns, and Roots by Tissue Printing

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