Antifungal potential ofAvicennia schauerianaStapf & Leech. (Acanthaceae) againstCladosporiumandColletotrichumspecies

Abstract

This study shows that Avicennia schaueriana extracts have a high potential for the growth inhibition of Colletotrichum and Cladosporium ssp. and will provide a starting point for discovering new natural products with antifungal activity. Their development is of particular interest to organic production systems where synthetic fungicides cannot be used.

Polyphenol-rich Avicennia marina leaf extracts induce apoptosis in human breast and liver cancer cells and in a nude mouse xenograft model

“…In particular, mangroves produce a wide variety of structurally novel natural agents with biochemical profiles [13]. Avicennia marina is a mangrove species of the Acanthaceae family, and discoveries of its chemical compounds have received much attention [14]. A. marina has been used as a traditional medicine for the treatment of skin diseases, rheumatism, ulcers, and smallpox.…”

The genusAvicennia, a pioneer group of dominant mangrove plant species with potential medicinal values: a review

“…The various fruit and root solvent extracts of A. officinalis also showed strong antimicrobial activity against various pathogenic bacteria as listed in Table 6 against E. coli, E. aerogenes, K. pneumoniae, P. aeruginosa, B. subtilis, L. delbrueckii, S. aureus and S. pyogenes, B. cereus and E. Faecalis, E. cloacae, P. vulgaris and so on (Sharief & Umamaheswararao 2011;Sharief et al 2014bSharief et al , 2015. Fardin and Young (2015) evaluated a high growth inhibition of A. schaueriana leaf extracts against plant fungal Colletotrichum and Cladosporium sp.. Using thin layer chromatography bioautography, petroleum ether and chloroform fractions of ethanolic stem extract of this plant showed antifungal activity against C. sphaerospermum, C. cladosporioides and C. lagenarium with many active bands in the range of Rf = 0·72 to Rf = 0·55.…”

Antifungal Activity of Croton aromaticus L. in vitro, Against Post-Harvest Fungal Pathogens Isolated from Tropical Fruits

“…MIC value of leaf extract on spore germination of C. musae and A. alternata was observed at 10 mg ml -1 and 30 mg ml -1 respectively. In composition, Fardin and Young (2015) have reported that MIC of ethanolic extract of Avicennia schaueriana leaves on growth of C. gloeopsporioides is more than 5 mg ml -1 by agar dilution assay.…”

“…Small amounts (5 μl) of the mixture was spotted on a 20 cm x 10 cm precoated thin layer chromatographic (silica gel 60-F-254) plates (0.5 mm thickness, Merck, Germany). They were developed in the solvent system dichloro methane: methanol (99 : 1 v/v), for about 1 hour (Fardin and Young, 2015). Developed chromatogram was observed under ultra violet (UV) light and subsequently under visible light after spraying p-anisaldehyde reagent and heating to 105 0 C. The retention factor (Rf) values of all the spots were determined.…”

“…Further, essential oils of several Croton species (Fontenelle et al, 2007) and methanolic and aqueous extracts of Croton macrostachyus (Teugwa et al, 2013) have demonstrated antifungal activity against several human pathogenic fungi. Growth of C. gleosporioides has been greatly inhibited by numerous other plant extracts such as ethyl acetate extract of Lantana camara with inhibition zone of 35.3 mm (Adme et al, 2013), aqueous extract of papaya leaves with 12% of mycelial growth inhibition (Abirami et al, 2013) and ethanolic, petroleum ether and chloroform extracts of stems of Avicennia schaueriana by agar dilution assay (Fardin and Young, 2015). Significant inhibition (88%) of the growth of P. mangiferae has been reported by Rai, (1996) with Eucalyptus globulus and Catharanthus roseus.…”