Effects of heavy metal exposure on the morphological and microscopical characteristics of the paddy plant

A. M. Jamila Alfaraas, Khairiah Jusoh, Ismail Sahid, Noraini Talip

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The objective of the study was todetermine the effects of heavy metal exposure onthe morphology and anatomy of paddy plant (Oryza sativa L .). Paddy plants were treated with single and combined close of Cd and Pb (5, 10, 15, 20 and 25 ppm) at 35days after germination. The results showed leaf chlorosis, decrease in number of roots and shoot height under both single and combined treatment. Heavy metal content in paddy was in the order of root>stem>grain>leaf and was highest at reproductive stage. A positive correlation was obtained between Cd, Pb and Cd-Pb concentrations in paddy plant parts with the concentrations of these metals in the soil. Scanning Electron Microscopic studies showed changes in the microscopic features due to accumulation of heavy metal and these included cell degeneration and thickening of cell walls, as well as increase in the number of treacherous elements in vascular cylinder and as residue in cells. Light microscope studies showed that Cd exposure caused dark deposits in the endodermal cells and vascular cylinder, as well as rupturing of parenchyma tissue. Results of the study indicated that paddy plants seemed to have some degree of tolerance to heavy metals.

Original languageEnglish
Pages (from-to)955-963
Number of pages9
JournalJournal of Environmental Biology
Volume37
Issue number5
Publication statusPublished - 1 Sep 2016

Fingerprint

Heavy Metals
Heavy metals
Blood Vessels
Hypochromic Anemia
Germination
Cell Wall
Anatomy
Microscopes
Soil
Deposits
Metals
Cells
Electrons
Tissue
Scanning
Soils
Light

Keywords

  • Heavy metal
  • Metal accumulation
  • Morphology
  • Paddy plant

ASJC Scopus subject areas

  • Environmental Engineering
  • Toxicology
  • Health, Toxicology and Mutagenesis

Cite this

Effects of heavy metal exposure on the morphological and microscopical characteristics of the paddy plant. / Jamila Alfaraas, A. M.; Jusoh, Khairiah; Sahid, Ismail; Talip, Noraini.

In: Journal of Environmental Biology, Vol. 37, No. 5, 01.09.2016, p. 955-963.

Research output: Contribution to journalArticle

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