Enhancing iron bioavailability in lentil grains circumventing the phytate barrier

The study aimed at examining the effect of Iron (Fe) management strategies on the redistribution of Fe fractions in soil and on the Fe bioavailability and phytic acid (PA) content in lentil grains. A pot experiment was conducted in Completely Randomized Design with 8 treatments replicated thrice. Th...

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Bibliographic Details
Published in:Journal of plant nutrition 2024-08, Vol.47 (13), p.2095-2107
Main Authors: Raj, Rahul, Pradhan, Amit Kumar, Singh, Mahendra, Beura, Kasturikasen, Kumar, Sunil, Paul, Sankar Chandra, Behera, Subrat Keshori, Kumar, Gopal, Kumari, Saloni
Format: Article
Language:English
Subjects:
Bioavailability
Enterobacter cloacae
Fertilizers
Foliage
Foliar applications
Fractions
Iron
Legumes
lentil
Phosphorus pentoxide
Phytic acid
Statistical analysis
uptake
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Summary:The study aimed at examining the effect of Iron (Fe) management strategies on the redistribution of Fe fractions in soil and on the Fe bioavailability and phytic acid (PA) content in lentil grains. A pot experiment was conducted in Completely Randomized Design with 8 treatments replicated thrice. The treatments were Control (no fertilizer); Recommended dose of fertilizers (RDF) i.e. 20:40 (N: P 2 O 5 ); RDF + Fe (basal application @10 kg/ha); RDF + Fe (foliar@ 1% (w/v) solution); RDF + Fe (basal + foliar); RDF + FeSB (biopriming with Fe solubilizing bacteria (Enterobacter cloacae strain BAU3) @ 5 mL/kg seed (1 x10 9 cfu mL −1 )); RDF + Fe (seed nutripriming with 1% (w/v) solution); and RDF + (biopriming + nutripriming). Fe source for the treatments was Fe-EDDHA chelate. Higher Fe release from these fractions was observed under biopriming + nutripriming with water soluble Fe of 21.09 and 20.82 mg kg −1 , respectively for the biopriming + nutripriming and sole biopriming treatments; and organically bound Fe of 230.95 and 211.36 mg kg −1 for the same treatments. These fractions contributed toward higher Fe uptake which was highest under biopriming + nutripriming. Values were statistically significant for biopriming and nutripriming and basal + foliar treatment. Lowest PA values in lentil grains as well as PA/Fe ratio were estimated under basal + foliar and biopriming + nutripriming treatments. Combined basal and foliar application of Fe esp. in chelated form and use of seed priming strategies have immense potential in enhancing the Fe bioavailability in grains from soil, seed or foliage.
ISSN:0190-4167
1532-4087
DOI:10.1080/01904167.2024.2330537