Transactions of the National Academy of Science and Technology
Tolentino, Vivian S.
Bautista, Jill Mary J.
Mining sites in the Philippines may pose possible deleterious effects to society both in the economic and health sector due to water and soil contamination, thus decontamination of polluted soil and water is necessary. This study aims to evaluate the effectiveness of Talinum paniculatum, commonly called "Jewels of Opar", as a phytoremediator for Fe in lateritic soil from Brooks Point, Palawan. This study will also establish its leaf anatomy and its morpho-anatomical effects on the leaves using different histological techniques for tissue processing, and determine the uptake of Fe in leaf through plant tissue analysis. Data gathered was statistically tested using repeated Analysis of Variance (ANOVA). Five soil treatments (garden soil, 25%, 50%, 75% and 100% lateritic soil) with T. paniculatum cuttings were set up. For morphological responses, leaf color was approximately at 3 (medium green), with the use of the leaf color chart, which indicated neither deficiency nor over-dosage of Fe. The number of leaves and nodes, plant height, and leaf surface area were relatively high (13 leaves, 9 nodes, 107 mm in height and 279.7 mm leaf surface area) in 75% lateritic soil. .The leaf anatomy is of the "Kranz" type, and it exhibited the typical anatomy of the leaf, which implies normal metabolism and chlorophyll functioning due to Fe. Uptake of Fe in the leaves showed that amounts of Fe in garden soil are 2555 ppm, 2338 ppm for 25% lateritic soils, 1485 ppm for 50% lateritic soils, 3720 ppm for 75% lateritic soils and 4232 ppm for 100% lateritic soils. These signify higher amounts of Fe in the leaves grown in 75% and 100% lateritic soil. This study will add to the baseline information in anatomy and its potential use as phytoremediator and as guide to consumers since the leaves are edible in certain parts of the world. (Author's abstract)