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Antifungal activity of 2-hydroxy-4-methoxybenzaldehyde isolated from Decalepis hamiltonii [Wight and Arn.] on seed-borne fungi causing biodeterioration of paddy

100%

Mohana D. C., Satish S., Raveesha K. A.

Journal of Plant Protection Research

2009

tom 49

nr 3

250-256

In vitro antifungal activity assay of different concentrations of 2-hydroxy-4-methoxybenzaldehyde isolated from Decalepis hamiltonii against six important seed-borne fungal pathogens viz., Alternaria alternata, Drechslera tetramera, Fusarium oxysporum, F. proliferatum, Pyricularia oryzae and Trichoconis padwickii isolated from paddy seeds revealed that, the compound 2-hydroxy-4-methoxybenzaldehyde showed significant antifungal activity. Among the fungi tested, F. proliferatum showed highest inhibitory activity, whereas P. oryzae showed least inhibitory activity. The minimal inhibitory concentration (MIC) varied between 350 μg/ml and 650 μg/ml depending on the fungal species. Comparative evaluation of the active compound with the synthetic fungicide thiram at recommended dosage revealed that, the antifungal activity of the active compound obtained from the plant was almost equivalent. Evaluation for nutritional parameters and dry matter losses (DML) revealed that, total carbohydrates, water soluble proteins, lipids and dry matter losses were significantly confined in 2-hydroxy-4-methoxybenzaldehyde treated paddy seeds compared with control seeds. This plant being an edible one can be exploited in the management of seed-borne pathogenic fungi and in the prevention of biodeterioration of grains and mycotoxin production during storage in an eco-friendly way.

In vitro propagation and the acclimatization effect on the synthesis of 2-hydroxy-4-methoxy benzaldehyde in Decalepis hamiltonii Wight and Arn.

80%

Sharma S., Shahzad A., Ahmad A., Anjum L.

Acta Physiologiae Plantarum

2014

tom 36

nr 09

The present study reports a high frequency in vitro propagation protocol through apical bud sprouting and basal organogenic nodule formation in shoot tip explants of Decalepis hamiltonii, an endemic and endangered medicinal liana. Among different combinations of plant growth regulators (PGRs) and growth additives, maximum of 8.20 shoots per explant with mean shoot length of 6.54 cm were induced on Murashige and Skoog’s medium (MS) supplemented with 5.0 µM 6-benzyladenine (BA) + 0.5 µM indole-3-acetic acid (IAA) + 30.0 µM adenine sulphate (ADS) through apical bud sprouting. On single cytokinin treatment explants did not exhibit good multiplication but showed nodulation (N₁) from the basal cut end similar to cytokinin–auxin combination (N₂). Between two types of nodular tissues, N₂ was proved to be better for maximum shoot regeneration (15.40 shoots per explant) and shoot length (4.56 cm) when cultured on MS medium supplemented with 5.0 µM BA, 0.5 µM IAA, 30.0 µM ADS and 1.0 µM gibberellic acid (GA₃). Microshoots were efficiently rooted on half-strength MS medium supplemented with 2.5 µM α-naphthalene acetic acid (NAA). After successful acclimatization in Soilrite, 95.10 % plantlets were survived in field conditions. Histological investigation proved useful in ascertaining the callogenic nature of the regenerating nodular tissue formed at the basal cut end of shoot tip explant. Acclimatized plantlets were studied for the estimation of chlorophyll and carotenoid content as well as the net photosynthetic rate (PN) during subsequent days of transfer to ex vitro condition. Moreover, acclimatization had a significant effect on biomass production and the synthesis of 2-hydroxy-4-methoxy benzaldehyde (2HMB). Maximum fresh weight (3.78 gm/plant), dry weight (0.39 gm/plant) of roots and 2HMB content (15.94 µg/ml of extract) were noticed after 8 weeks of acclimatization.

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HPLC and ESI-MS analysis of vanillin analogue 2-hydroxy-4-methoxy benzaldehydein swallow root - the influence of habitat heterogeneity on antioxidant potential

80%

Pradeep M., Shetty N. P., Giridhar P.

Acta Scientiarum Polonorum. Hortorum Cultus

2019

tom 18

nr 2

Decalepis hamiltonii Wight & Arn., is a plant species that is endemic to southern parts of India. The aim of this study is to explore the influence of habitat heterogeneity on total phenolics, flavonoids, flavor compound 2-hydroxy-4-methoxy benzaldehyde (2H4MB) and antioxidant potential of tubers. The flavor metabolite 2H4MB was quantified by HPLC using isocratic solvent system (methanol : acetonitrile : water : acetic acid 47 : 10 : 42 : 1) that indicates obvious difference in 2H4MB content of tubers with a maximum of 96.4 ±2.6 and 92.6 ±1.2 mg 100 g–1 dry weight basis (DW) in samples from B.R. Hills and Mysore area of Karnataka, followed by samples from Tirumalai Hills and Kurnool from Andhra Pradesh (89.02 ±0.9 mg 100 g–1 DW), Tamil Nadu (81.6 ±2.4 mg 100 g–1 DW) and Kerala (80.18 ±1.1 mg 100 g–1 DW) of tubers. There was variation in total phenolics, total flavonoids and 2H4MB content of root samples collected from different habitats. Also significant variation in free radical scavenging potential of methanol root extracts was noticed, which is directly proportional to the phenolics, and flavonoids content. Overall, there was 10–16% difference in content of 2H4MB in D. hamiltonii tubers that were collected from different natural habitats, and this habitat heterogeneity has to be considered vital, while using such tubers for edible purposes and food formulations.

Ograniczanie wyników

1 Acta Physiologiae Plantarum

1 Acta Scientiarum Polonorum. Hortorum Cultus

1 Journal of Plant Protection Research

1 Ahmad A.

1 Anjum L.

1 Giridhar P.

1 Mohana D. C.

1 Pradeep M.

1 Raveesha K. A.

1 Satish S.

1 Shahzad A.

1 Sharma S.

1 Shetty N. P.

1 2019

1 2014

1 2009

Wyniki wyszukiwania

Antifungal activity of 2-hydroxy-4-methoxybenzaldehyde isolated from Decalepis hamiltonii [Wight and Arn.] on seed-borne fungi causing biodeterioration of paddy

In vitro propagation and the acclimatization effect on the synthesis of 2-hydroxy-4-methoxy benzaldehyde in Decalepis hamiltonii Wight and Arn.

HPLC and ESI-MS analysis of vanillin analogue 2-hydroxy-4-methoxy benzaldehydein swallow root - the influence of habitat heterogeneity on antioxidant potential