Host-hemiparasite transfer of the C-glucosyl xanthone mangiferin between Mangifera indica and Dendrophthoe falcata

Figures & data

Table I Total phenolics, total flavonoids and DPPH radical scavenging activity of methanolic extracts of Dendrophthoe falcata and corresponding host plants.

Plant sample	Total phenolic content (g/100g)	Total flavonoid content (g/100gm)	Anti-radical activity IC50 (µg/ml)
D. falcata parasitic on Mangifera indica	2.599±0.0412^a*	0.5336±0.046^b*	103.4±0.611^c*
D. falcata parasitic on Psidium guajava	1.205±0.0234^a*	0.5207±0.019^b*	101.6±0.532^c*
D. falcata parasitic on Melia azadirachta	4.496±0.0032^a*	0.5095±0.0007^b*	97.6±0.781^c*
Mangifera indica	4.489±0.0183	0.5360±0.045	108.2±0.116
Psidium guajava	4.527±0.0461	0.3627±0.007	199.1±0.181
Melia azadirachta	4.590±0.0032	0.2093±0.002	216.2±0.326
The values are expressed as mean±SD, n=4; *Comparison was made between samples of hemiparasite collected from different host plants; ^a p<0.001, ^b p<0.05, ^c p>0.05 (statistically insignificant).

Figure 1.  HPTLC chromatograms of flavonoid pattern of Dendrophthoe falcata parasitic on different host plants, recorded at 365 nm after treatment with NP reagent.H-I- Psidium guajava, (R_f 0.38, 0.89), H-I-P-I – D. falcata parasitic on P. guajava, (R_f 0.4, 0.8, 0.89), H-II- Mangifera indica, (R_f 0.25, 0.41, 0.81, 0.89), H-II-P-II- D. falcata parasitic on M. indica,( R_f 0.66, 0.8, 0.89) H-III – Melia azadirachta, (R_f 0.89) H-III-P-III- D. falcata parasitic on M. azadirachta, (R_f 0.69, 0.89).

Figure 2.  HPLC chromatograms of reference standard, mangiferin (A) and compound isolated from Dendrophthoe falcata L. parasitic on Mangifera indica (B). Scaling of Figure B has been expanded to better visualize the mangiferin peak.

Figure 3.  MS spectra of compound isolated from stems of Dendrophthoe falcata parasitic on Mangifera indica.