Browsing by Author "Thangavelu Muthukumar"

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    ASSESSMENT OF METAL ACCUMULATION CAPACITY OF BRACHIARIA RAMOSA COLLECTED FROM CEMENT WASTE DUMPING AREA FOR THE REMEDIATION OF METAL CONTAMINATED SOIL
    (Elsevier-Ecological Engineering, 2013-07-06) Lakshmi P M; Sarah Jaison; Thangavelu Muthukumar; Muthukumar M
    Plant and soil samples were collected from areas surrounding a cement factory. As the vegetation around the cement factory was predominated by Brachiaria ramosa (B. ramosa) and due to its ecological importance, it was evaluated for its metal accumulation capacity. An assessment of the plant and soil samples for metals such as Zn, Pb, Cd and Hg indicated that B. ramosa accumulated significant amounts of Pb and Zn in its shoot and root tissues several folds higher than their available concentration in the soil, hence, designated as an accumulator of metals. In the shoot, Pb accumulation of B. ramosa, was found to be of great importance as it can be a promising plant for the remediation of Pb contaminated soil.
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    PATTERNS OF ENDORHIZAL FUNGAL ASSOCIATIONS IN FRUIT CROPS OF SOUTHERN INDIA
    (WILEY-J. Plant Nutr. Soil Sci, 2012-03-22) Sarah Jaison; Krishnasamy Rajeswari; Thangavelu Muthukumar
    A survey on the endorhizalstatus of 39 fruit crops of 25 families, indicatedthat 22 fruit crops had arbuscular mycorrhizal (AM)–, four had dark septate endophyte (DSE)–fungal association, and 13 had dual colonization of AM and DSE fungi. Fruit crops were capable of forming Arum-, Paris-, or intermediate-types of AM morphologies of which intermediate-type was common. To our knowledge, we report for the first time AM in 10 fruit crops and DSE-fungal association in 17 fruit crops. The extent of AM- and DSE-fungal colonization ranged from 41% to 98% and < 1% to 89.9%, respectively, in different fruit crops. Arbuscular mycorrhizal–fungal spore numbers in the rhizosphere ranged from 6 to 61 spores per 25 g of soil. Arbuscular mycorrhizal– fungal spores belonging to Acaulospora, Glomus, and Scutellospora were isolated from the rhizosphere soil.