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Page 53
Microbiol Biotechnol Rep | Volume 1, Issue 2
November 16-17, 2017 Atlanta, Georgia, USA
Annual Congress on
Mycology and Fungal Infections
Glomus fasciculatum fungi as a bio-convertor and bio-activator of inorganic and organic
P in dual symbiosis
Rafia Azmat
University of Karachi, Pakistan
T
his article describes mechanism of Phosphorus supply from the soil into plants under VAM fungal inoculation.
It was already established that VAM fungi symbiosis helps in uptake of nutrients especially P which is not
easily accessible under ordinary condition of soil. For this investigation,
Conocarpus erectus L
species and
Glomus fasciculatum was identified and selected in four experimental set up including i) control (E
1
), ii) VAM
inoculated (E
2
), iii) VAM and excess of CO
2
(E
3
) and iv) VAM and drought (E
4
). All Plants except E
3
) were
cultivated under natural condition and watered alternative day whereas E4 was watered after regular interval
of 4 days. Analysis of soil and plant’s P were carried out after 12 months. Phosphorus in plants were analysed
in roots, stem, and leaves separately and correlated with soil remaining phosphorus. Results showed that soil P
was less in four experimental set up when compared with P of standard soil. It was found that P accumulation in
plants was varied in all four experimental conditions based on VAM symbiosis. It was found that the roots of E
2
and E
3
plants showed highest P accumulation as compared to E1 and E4 which were linked with absence of VAM
and drought conditions. P translocation into E4 plants showed that movement of P based on availability of water
condition due to which it was less in leaves too over E
1
, E
2
and E
3
plants. Experimental facts and nonstop growth
of plants recommended that VAM fungi act as a bio-converter and bio-activator of soil nutrients especially of
Phosphorus, and their hypal interaction absorb soil nutrients and convert inorganic P to organic one for plant
development. Continuous growth of one year old conocarpus plant support the proposed idea that phosphorus
cycle exists during VAM inoculations which strengthen the plant and activate photobiological activity that helps
in increasing photosynthetic rate and stimulate all biological processes of plant including H+ co-transporter
couple with inorganic phosphorus and its ultimate supply to plants.
rafiasaeed200@yahoo.com