Document Type : Original Article
Authors
1
Botany Department, Faculty of Science, Kafr El-Sheikh University, Kafr El-Sheikh, Egypt Biology Department, Faculty of Science, Taif University, P.O. Box. 888, Taif, Saudi Arabia
2
Botany Department, Faculty of Science, Damanhour University, Damanhour, Egypt Botany and Microbiology Department, Faculty of Science, King Saud University, P.O. Box. 2455, Riyadh, Saudi Arabia
3
Botany Department, Faculty of Science, Benha University, Benha, Egypt
4
Botany Department, Faculty of Science, Tanta University, Tanta, Egypt
Abstract
The present study aims to assess the role of Phragmites australis in the accumulation of elements and
nutritive value to test its suitability to use as a potential forage plant for cattle, goats and sheep in lake
Burullus, Egypt. Different plant organs were collected from the sampling sites for estimating seven heavy
metals (Mn, Pb, Co, Cu, Cd, Zn, and Fe) and six nutrients (Na, K, Ca, Mg, P and N) as well as the
physical and chemical characteristics of water. In addition, seven organic constituents (total ash,
carbohydrates, total lipids, crude fibers, crude protein, digestible crude protein and total digestible
nutrients) were estimated, and three nutritive values (digestible energy, metabolized energy, net and gross
energy) were calculated. The results revealed that an increase in heavy metals accumulation in the
rhizome and decreased in the order of rhizome > stem > leaves. Moreover, positive linear relationships
were found between these heavy metal concentrations in plant organs and those in water. Thus P.
australis can serve as a good accumulator and bioindicator of heavy metals in the polluted water bodies.
On the other hand, the nutrients are decreased in the order of stems > leaves > rhizomes. The leaves had
the highest total ash, crude protein, digestible crude protein, digestible energy, metabolized energy and
net energy, while the stems had the highest total carbohydrates and crude fibers. Therefore, the results
revealed that the underground rhizomes had the ability to accumulate heavy metals and thereby used as a
phytoremediator; while its aboveground parts had the highest nutrient and nutritive values, which
consider the plant as good forage for animals.
Keywords
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