Changes in Phenylalanine Ammonia-Lyase, Peroxidase and Polyphenoloxidase during the Development of Local Necrotic Lesions in Pinto Bean Leaves infected with Alfalfa Mosaic Virus.

Vegetti, G.; Conti, Giovanni Maria; Pesci, P.

doi:10.1111/j.1439-0434.1975.tb03557.x

Cited by 23 publications

(7 citation statements)

References 35 publications

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“…1975). IsoPOs have multivarious functions in cells (LOEBENSTEIN 1972, VEGETTI et al 1975) and the suspected novel ones found in this study could be concerned with a general alteration of the plants metabolism from a reductive to an oxidative state (BRENNAN andFRENKEL 1977, MUKHERJEE andCHOUDHURI 1981) which might result in accelerated senescence.…”

mentioning

confidence: 80%

Peroxidase, Polyphenoloxidase and Ribonuclease in Tobacco Necrosis Virus Infected or Mannitol Osmotically-stressed Cowpea and Cucumber Tissue.

Wagih

Coutts

1982

J Phytopathol

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mentioning

confidence: 80%

Peroxidase, Polyphenoloxidase and Ribonuclease in Tobacco Necrosis Virus Infected or Mannitol Osmotically-stressed Cowpea and Cucumber Tissue.

Wagih

Coutts

1982

J Phytopathol

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“…Frotn a phytopathological point of view, peroxidase has been itnplicated iti many host pathogen interactions, particularly in the defetice of plants against parasites (Fric, 1976;Hamtnerschmidt et al, 1982) though some investigations seetn to indicate that peroxidase etihaticement in infected tissues is only a phetiotnetioti associated with resistance but not responsible for it (Seevers and Daly, 1970;Nadolny and Sequeira, 1980;Montalbini, 1992). In virus-infected platits enhanced peroxidase activity has been found associated with hypersensitive response and systetnic-induced resistance in tobacco leaves infected by tobacco mosaic virus (TMV) (Simons and Ross, 1970;Van Loon, 1976;Montalbini and Buonaurio, 1986;Ye et al, 1990) and during local lesion developtnent in bean leaves infected by alfalfa mosaic virus (Veggetti et al, 1975). P.…”

Section: Introductionmentioning

confidence: 99%

Peroxidase Activity and Isoperoxidase Pattern in Tobacco Leaves Infected with Tobacco Necrosis Virus and Other Viruses Inducing Necrotic and Non‐Necrotic Alterations

Montalbini

Buonaurio

Kumar

1995

Journal of Phytopathology

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The level of peroxidase activity was greatly enhanced in tobacco leaves infected by tobacco necrosis virus (TNV) and other viruses which induce neerotie symptoms (TMV, ToM V and PVY^). The intensity was related to the age of the leaves infected: absent or negligible in mature leaves and very pronounced in young growing infected leaves. On the eontrary, changes in peroxidase activity were negligible when the infection was provoked by viruses which do not produce necrotic reactions (TMV and PVY°). Analysis of the peroxidase isoenzynie pattern in tobacco leaves infected by TNV and other necrosis-inducing viruses revealed in all cases, a slight increase in anionic (pi 3.5-3.7) and a considerable increase in moderately anionic isoenzymes, particularly the pi 4.6 isoenzyme which in TNV and PVY'^-infected leaves reached levels up to 21 and 72 times the healthy control values. A considerable increase in the cationic (pi 9.3-8.8) isoenzymes and the appearance of one moderately cationic isoenzyme (pi 8.2) was also detected. In leaf extracts from virus-infected tobacco leaves with nonnecrotic response, no, or negligible alterations on the isoenzyme pattern were detected. However, infection by a fungal parasite (Erisyphc eiehoracearwn), which established a fully compatible, non-neerotic, interaction with tobacco leaves, like the necrosis-inducing viruses, changed the isoperoxidase pattern. The data suggest the necrotic alterations and associated changes in the peroxidase activity and isoperoxidase pattern in virus-infected leaves are not clearly reUited. ZusammenfassungPeroxitlaseaktivitat und Isoperoxidasemustcr in Tabakbliitten infiziert mit dem Tabaknekrosisvirus bzw. anderen Viren, die nekrotische und nicht nekrotische Veranderungen hervorrufen Die Hohe der Peroxidaseaktivitat in Tabakblattern wurde durch eine Infektion mit dem Tabaknekrosisvirus (TNV) sowei anderen Vircn, die nekrotische Symptome hervorrufen (TMV, ToMV and PVY^), deutlich gesteigert. Die Intensitat war mit dem Alter der Blatter gekoppelt: nicht vorhanden oder geringliigig in reifen Blattern bzw. sehr stark ausgepragt in jungen, wachsenden infizierten Blattern. Denigegenliber waren Anderungen in der Peroxidaseaktivitat nur geringfugig, wenn die Infektion mit Viren, die keine nekrotische Reaktionen (TMV und PVY") hervorrufen, erfolgte. Die Analyse der Peroxidaseisoenzymmuster von Tabakblattern, die mit TNV oder anderen nekrosisinduzierenden Viren infiziert waren, zeigte in alien Fallen, daB bei den anionischen (pi 3.5-3.7) eine kleine bzw. bei den miiBig anionischen Isoenzymen eine deutliche Erhohung zu ermitteln war. Bei den maBig anionischen Isoenzymen war das pi 4.6 Isoenzym beeinfluBt, das in TNV-und PVY'^'-infizierten Blattern Konzentralionen erreichte, die bis zu 21-bzw. 72-lach des Wertes in gesunden Kontrollen betrugen. Eine deutliche Erhohung der kationischen Isoenzymen (pi 9.3-8.8) sowie das Vorkommen eines miiBig kationischen Isoenzym (pi 8.2) wurde beobachet. In Blattextrakten von virusinfizierten Tabakblatten, die keine nekrotische Reaktion z...

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“…The results in Figures 1 and 2 indicated that an increase in three anionic isozymes of PO reacting with substrates other than guaiacol was associated with the resistant interaction of this host-pathogen system and the two anionic isozymes with the susceptible interaction. No evidence was obtained to support that the infection was accompanied by the change in PPO and IAAO as had been demonstrated for the resistance of several plant diseases (BATRA and KuHN 1975, RAUTELA and PAYNI-1970, VEGETTI et al 1975, VIDHYASEKARAN 1975. The increase in PO isozymes, however, was inconsistent with a change in the level of total PO activity, unlike a study of wheat stem rust by SEEVERS and DALY (1971).…”

Section: Discussionmentioning

confidence: 77%

Peroxidase and Polyphenoloxidase in Relation to the Crown Rust Resistance of Oat Leaves

Yamamoto

Hokin

Tani

1978

Journal of Phytopathology

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Changes in Phenylalanine Ammonia-Lyase, Peroxidase and Polyphenoloxidase during the Development of Local Necrotic Lesions in Pinto Bean Leaves infected with Alfalfa Mosaic Virus.

Cited by 23 publications

References 35 publications

Peroxidase, Polyphenoloxidase and Ribonuclease in Tobacco Necrosis Virus Infected or Mannitol Osmotically-stressed Cowpea and Cucumber Tissue.

Peroxidase, Polyphenoloxidase and Ribonuclease in Tobacco Necrosis Virus Infected or Mannitol Osmotically-stressed Cowpea and Cucumber Tissue.

Peroxidase Activity and Isoperoxidase Pattern in Tobacco Leaves Infected with Tobacco Necrosis Virus and Other Viruses Inducing Necrotic and Non‐Necrotic Alterations

Peroxidase and Polyphenoloxidase in Relation to the Crown Rust Resistance of Oat Leaves

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