Effects of Chromium Species on Root Morphometry of Typha domingensis in Floating Treatment Wetlands.
Molina MB, de Las Mercedes Mufarrege M, Di Luca GA, Campagnoli MA, Hadad HR
Phytoremediation
Floating plant rafts planted with cattails are being used to clean up chromium-contaminated water bodies — meaning a plant you've seen growing wild at the edge of ponds and ditches may be quietly detoxifying industrial runoff in wetlands near you.
Researchers tested how cattails — the tall brown-topped plants common at pond edges — handle two different forms of chromium, a heavy metal that can end up in water from industrial sources. They found that cattails can survive both forms, but the more toxic form visibly damages the roots inside, shrinking the channels that move water and nutrients. This is important because it shows cattails are tough enough to work as living filters in floating garden-like systems placed on polluted water.
Key Findings
Cr(VI) caused greater internal root damage than Cr(III) at equivalent concentrations of 5 and 10 mg/L, reducing the area of water-conducting tissue (xylem).
Typha domingensis tolerated both chromium species without dying, confirming its viability as a phytoremediation species in floating treatment wetland systems.
Root morphometric parameters — including cortex thickness and vascular bundle dimensions — changed measurably in response to chromium exposure, providing a structural indicator of toxicity level.
chevron_right Technical Summary
Cattails (Typha domingensis) growing in floating treatment wetlands can tolerate chromium pollution in water, but the toxic form (Cr VI) causes more damage to root structure than the less toxic form (Cr III), even at the same concentration.
Abstract Preview
The aims were to evaluate the tolerance of Typha domingensis and the changes in the internal morphometric parameters of roots exposed to different Cr(III) and Cr(VI) concentrations in Floating Trea...
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Typha domingensis, known commonly as southern cattail or cumbungi, is a perennial herbaceous plant of the genus Typha.