NDLI: Morphological, anatomical, and ultrastructural changes (visualized through scanning electron microscopy) inducedin Triticum aestivum by Pb2+ treatment

Content Provider	Springer Nature Link
Author	Kaur, Gurpreet Singh, Harminder Pal Batish, Daizy Rani Kohli, Ravinder Kumar
Copyright Year	2014
Abstract	Lead (Pb) causes severe damage to crops, ecosystems, and humans, and alters the physiology and biochemistry of various plant species. It is hypothesized that Pb-induced metabolic alterations could manifest as structural variations in the roots of plants. In light of this, the morphological, anatomical, and ultrastructural variations (through scanning electron microscopy, SEM) were studied in 4-day-old seedlings of Triticum aestivum grown under Pb stress (0, 8, 16, 40, and 80 mg Pb2+ l−1; mild to highly toxic). The toxic effect was more pronounced in radicle growth than on the plumule growth. The SEM of the root of T. aestivum depicted morphological alterations and surface ultrastructural changes. Compared to intact and uniform surface cells in the control roots, cells were irregular and desiccated in Pb2+-treated roots. In Pb2+-treated roots, the number of root hairs increased manifold, showing dense growth, and these were apparently longer. Apart from the deformity in surface morphology and anatomy of the roots in response to Pb2+ toxicity, considerable anatomical alterations were also observed. Pb2+-treated root exhibited signs of injury in the form of cell distortion, particularly in the cortical cells. The endodermis and pericycle region showed loss of uniformity post Pb2+ exposure (at 80 mg l−1 Pb2+). The cells appeared to be squeezed with greater depositions observed all over the tissue. The study concludes that Pb2+ treatment caused structural anomalies and induced anatomical and surface ultrastructural changes in T. aestivum.
Starting Page	1407
Ending Page	1416
Page Count	10
File Format	PDF
ISSN	0033183X
Journal	Protoplasma
Volume Number	251
Issue Number	6
e-ISSN	16156102
Language	English
Publisher	Springer Vienna
Publisher Date	2014-05-09
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Pb2+ toxicity Morphological changes Anatomical changes Scanning electron microscopy Cell Biology Plant Sciences Zoology
Content Type	Text
Resource Type	Article
Subject	Cell Biology Plant Science Medicine

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