Existence of Antiviral Principles (AVPs) in Seed Extracts of Harpullia cupanioides (Roxb.) against Tomato Spotted Wilt Virus (TSWV), Rice Tungro Virus (RTV) and Cowpea Aphid Borne Mosaic Virus (CABMV)

Bharathimatha, C.; Doraiswamy, Sabitha; Rabindran, R.; Renukadevi, P.; Velazhahan, R.

doi:10.1556/aphyt.38.2003.1-2.13

Cited by 5 publications

(2 citation statements)

References 12 publications

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“…tritici and the control efficacy was between 65 and 87%. Bharathimatha et al (2003) demonstrated that preinoculation treatment with seed extracts of Harpulia cupanioides inhibited tomato spotted wilt virus (TSWV), rice tungro virus (RTV) and cowpea aphid borne mosaic virus (CABMV). Milsana, a commercial product of the leaf extract of the giant knotweed (Reynoutria sachalinensis), has been reported to have a protective effect against powdery mildew on cucumber (Fofana et al 2002).…”

Section: Discussionmentioning

confidence: 99%

Induction of systemic resistance to bacterial blight caused byXanthomonas campestrispv.malvacearumin cotton by leaf extract from a medicinal plant zimmu (Allium sativumL. × Allium cepaL.)

Satya

Gayathiri

Bhaskaran

et al. 2007

Archives Of Phytopathology And Plant Protection

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Induction of systemic resistance to bacterial blight caused by Xanthomonas campestris pv. malvacearum in cotton by leaf extract from a medicinal plant zimmu (Allium sativum L. 6 Allium cepa L.) Abstract Aqueous extract (10%) from leaves of zimmu (Allium sativum L. 6 Allium cepa L.) when applied as foliar spray to first and second leaves of cotton plants induced systemic resistance in third and fourth leaves to a challenge infection with Xanthomonas campestris pv. malvacearum and reduced the number of lesions by up to 73% compared with water-treated control plants. The treated leaves exhibited significantly high activity of enzymes phenylalanine ammonia-lyase, peroxidase and polyphenol oxidase along with rapid accumulation of phenolics. The activities of chitinase and b-1,3-glucanase were greatly elevated in treated plants as compared to water-treated controls. An 11-fold increase in chitinase activity was evident 4 d after treatment. Western blot analysis revealed that a chitinase with an apparent molecular weight of 58 kDa that cross-reacted with a barley chitinase antiserum was induced in cotton leaves 3 d after treatment and the maximum induction of this chitinase was detected 4 d after treatment. The present study provides evidence for the induction of biochemical defence mechanisms in cotton leaves after treatment with leaf extract from zimmu.

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Section: Discussionmentioning

confidence: 99%

Induction of systemic resistance to bacterial blight caused byXanthomonas campestrispv.malvacearumin cotton by leaf extract from a medicinal plant zimmu (Allium sativumL. × Allium cepaL.)

Satya

Gayathiri

Bhaskaran

et al. 2007

Archives Of Phytopathology And Plant Protection

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“…There are sev eral re ports that re sis tance in plants against var i ous fun gal (Doubrava et al 1988; Schnei der and Ullrich 1994) and vi ral (Verma et al 1979, Straub et al 1986, Bharathimatha et al 2003 dis eases can be in duced us ing plant ex tracts. Doubrava et al (1988) re ported that treat ing leaves of cu cum ber with an ex tract from spin ach or rhubarb leaves in creased re sis tance to dis ease caused by Colleto trichum lagenarium.…”

Section: Discussionmentioning

confidence: 99%

Induction of early blight resistance in tomato by Quercus infectoria gall extract in association with accumulation of phenolics and defense-related enzymes

et al. 2004

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1 De part ment of Plant Pa thol ogy, Ag ri cul tural Col lege and Re search In sti tute, Tamil Nadu Ag ri cul tural Uni ver sity, Madurai-625 104, Tamil Nadu, In dia 2 De part ment of Phys i cal Sci ences, Ag ri cul tural Col lege and Re search In sti tute, Tamil Nadu Ag ri cul tural Uni ver sity, Madurai-625 104, Tamil Nadu, In dia * Au thor for cor re spon dence Ab stractTreat ment of to mato leaves with aque ous ex tract (0.5%) of the galls of Quercus infectoria sig nif i cantly re duced in fec tion from sub se quent in oc u la tion with Alternaria solani, the tomato early blight patho gen. When the leaves were chal lenge-in oc u lated with A. solani 3 d af ter ap pli ca tion of Q. infectoria gall ex tract (QIGE), the per cent de fo li a tion de creased from 33.6 to 7.3. Two to three day pre-treat ment with QIGE reduced the per cent de fo li a tion by 77 per cent. The bio chem i cal re sponses of to mato plants to QIGE were also stud ied. In tomato plants treated with QIGE, phe no lic con tent in creased rap idly, reached the max i mum at 2 d af ter treat ment. Phenylalanine am mo nia-lyase (PAL) ac tiv ity in creased sig nif i cantly from 1 d af ter treat ment and the max i mum en zyme ac tiv ity was re corded 2 d af ter treat ment at which pe riod a 3-fold in crease in PAL ac tiv ity was ob served when com pared to the con trol. Peroxidase (PO) ac tiv ity was also sig nif i cantly in creased 1 d af ter treat ment and the max i mum ac tiv ity was reached 2 d af ter treat ment. Peroxidase isozyme anal y sis in di cated that PO-1 was in creased dra mat i cally in to mato leaves 1 d af ter treat ment and main tained at the same level through out the ex per i men tal pe riod of 6 d. When to mato leaves were treated with QIGE, a two-fold in crease in chitinase and β-1,3-glucanase ac tiv i ties was re corded 2 and 3 d re spec tively, af ter treat ment. The enhanced ac tiv i ties of de fense-re lated en zymes and el e vated levels of phenolics in QIGE-treated to mato plants be tween 1 and 3 d af ter treat ment sug gest that these in duced bio chem i cal defenses may be in volved in the sup pres sion of early blight by QIGE.List of ab bre vi a tions: GlcNAc-N-acetyl glu cosamine; QIGE-Quercus infectoria gall ex tract; PAL -phenylalanine am mo nia-lyase; PO -perox idase; PR pro teins-pathogenesis-related pro teins In tro duc tionPlants have evolved a wide ar ray of bio chem i cal de fenses to com bat the in vad ing patho gens. Some of the bio chem i cal de fense mech a nisms are con stitu tive and ex ist ing in nor mally de vel oped healthy plants. These in clude phenolics, phe no lic glycosides, un sat u rated lac tones, sapo nins, cyanogenic

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Phytoproteins and Induced Antiviral Defence in Susceptible Plants: The Indian Context

Prasad

Srivastava

2017

A Century of Plant Virology in India

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Existence of Antiviral Principles (AVPs) in Seed Extracts of Harpullia cupanioides (Roxb.) against Tomato Spotted Wilt Virus (TSWV), Rice Tungro Virus (RTV) and Cowpea Aphid Borne Mosaic Virus (CABMV)

Cited by 5 publications

References 12 publications

Induction of systemic resistance to bacterial blight caused byXanthomonas campestrispv.malvacearumin cotton by leaf extract from a medicinal plant zimmu (Allium sativumL. × Allium cepaL.)

Induction of systemic resistance to bacterial blight caused byXanthomonas campestrispv.malvacearumin cotton by leaf extract from a medicinal plant zimmu (Allium sativumL. × Allium cepaL.)

Induction of early blight resistance in tomato by Quercus infectoria gall extract in association with accumulation of phenolics and defense-related enzymes

Phytoproteins and Induced Antiviral Defence in Susceptible Plants: The Indian Context

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