Structural Changes in Radish Seedlings Exposed to Cadmium
作者： AP Vitória , APM Rodriguez , M Cunha , PJ Lea , Ricardo Antunes de Azevedo
DOI: 10.1023/B:BIOP.0000041062.00539.7A
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摘要: Radish (Raphanus sativus L. cv. Redondo Vermelho) seedlings were analysed by light and scanning electron microscopy to characterize the structural changes caused exposure 0.5 or 1.0 mM cadmium chloride for 24, 48 72 h. The analyses showed in anatomical morphological characteristics of roots, stems leaves two-week-old seedlings. In all tissues, pressure potential was decreased. Premature death with disintegration epidermis an increase number root hairs observed roots exposed Cd. stem Cd exhibited more cells layers cambial region. main effects response stomatal closure, lack cell wall thickening alterations shape chloroplasts. It is suggested that treated mainly a Cd-induced decrease water uptake.
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