Charlotha I. Tupan, Rodiyati Azrianingsih
Thalassia hemprichii was used to study the accumulation and deposition of lead in tissues of roots, rhizomes and leaves, as well as their impact on changes in the anatomy of that tissue. This plant was exposed to lead from Pb(NO3)2 solution at the concentrations of 0, 5, 15 and 25 ppm for 4 weeks. Lead was absorbed and deposited in apoplast in the cell walls and in the spaces between cells in tissues of roots, rhizomes and leaves. Anatomical structure analysis shows that the cell wall of endodermis and exodermis root layer became thick along with the increase of lead concentration. Air spaces in the cortex of roots and rhizomes widened. Cell wall thickening occurs also in the epidermis and endodermis of rhizome also at cuticle and epidermis of leaves. In general, changes in the anatomy of the roots, rhizomes and leaves followed to the increasing of lead concentration. This is one strategy for minimizing the translocation of lead in other tissue of T. hemprichii. © 2016, BIOFLUX SRL. All rights reserved.
Department of Aquatic Resource Management, Faculty of Fishery and Marine Science, Pattimura University, Jalan Mr Chr. Soplanit, Kampus Poka, Ambon, 97233, Indonesia; Department of Biology, Faculty of Mathematics and Natural Science, Brawijaya University, Jalan Veteran, Malang, 65145, East Java, Indonesia
