Differential physiological and ultrastructural responses of cottonseeds under Pb toxicity

• Autorzy: Khan M. , Khan M. D. , Ali B. , Noor M. , Zhu S.-J.
• Języki publikacji: EN

Abstrakty

EN

Lead (Pb) is a toxic heavy metal that causes physiological and morphological changes in plants. Our current study was aimed at observing Pb-induced changes in seeds of two upland cotton varieties (TM-1 and Z- 747) that were exposed for 24 hours to various Pb concentrations (0, 50, 100, 300, and 500 μM). Seeds of TM-1 showed higher germination percentages, water uptake, and cell viability as compared to Z-747. Changes in nuclei shape, their partial disappearance, and increase in vacuole size were the initial signs of lead toxicity in Z-747, while TM-1 maintained its typical conformations. Cell wall thickening; increase in the number of mitochondria, protein, and lipid bodies; and vacuolation were more prominent in TM-1. In contrast, plasmolytic shrinkage and scattered cell organelles were the key characteristics of Z-747 at higher doses of Pb. Those observations demonstrated that seeds of TM-1 were more tolerant to Pb stress as compared to Z-747 and may be considered a preferred choice for culture on Pb-contaminated soils.

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2014
• Tom: 23
• Numer: 6
• Opis fizyczny: p.2063-2070,fig.,ref.

Twórcy

autor

Khan M.

• Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
• Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology, Pakistan

autor

Khan M. D.

• Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
• Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology, Pakistan

autor

Ali B.

• Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China

autor

Noor M.

• Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology, Pakistan

autor

Zhu S.-J.

• Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China

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