Foliar Metal Content and Changes in Epidermal Traits of LAGERSTROEMIA PARVIFLORA (L.) Roxb. |
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| Authors: | Anjum Farooqui S A Farooqui Kamla Kulshreshtha S N Singh M Yunus K J Ahmad |
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| Institution: | (1) National Botanical Research Institute, Rana Pratap Marg, Lucknow, India;(2) Birbal Sahni Institute of Palaeobotany, 53, University Road, Lucknow, India;(3) U. P. Directorate of Geology and Mining, 2-way Road, Lucknow, India |
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| Abstract: | A comparative study of the physico-chemical properties of soil, leafmetal content and foliar surface traits in Lagerstroemia parviflora(L.) Roxb. plants, growing in an iron-rich mineralized and anon-mineralized area was carried out. Metal accumulation wasmaximum in summer; in the peak growing season, it declined duringthe rainy season but picked up again in winter. In leaves sampled froma mineralized region, epidermal cells were much smaller in size buthigher in number per unit area. Changes in the number and size of glandular papillae were also observed. Characteristic non-glandular,elongate trichomes with acute tip were also recorded in mineralizedpopulations. Scanning electron microscopic examination of the foliarsurface configuration revealed distortions in epicuticular wax structuresand wider cuticular striations with typically parallel arrangement inthese populations.The present study shows that high Fe-accumulation in leaves of L.parviflora during the exponential growth phase as well as changes inthe epicuticular structures may be indicators of metal stress in the populations of the mineralized area. |
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| Keywords: | cuticle iron rich soil Lagerstroemia metal content mineralized region wax |
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