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Responses of elongation growth rate, turgor pressure and cell wall extensibility of stem cells ofImpatiens balsaminato lead, cadmium and zinc

✍ Scribed by Sharifah Barlian Aidid; Hishashi Okamoto


Book ID
104655984
Publisher
Springer Netherlands
Year
1993
Tongue
English
Weight
323 KB
Volume
6
Category
Article
ISSN
1572-8773

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✦ Synopsis


Elongation growth rate of stem cells of Impatiens balsamina was inhibited by the heavy metals Pb 2+ , Cd 2+ and Zn 2+ due to their suppression on cell wall extensibility. Effective turgor was also inhibited by Pb 2 § and Cd 2+ but it played a secondary role in reducing the stem cell elongation growth rate. The major rate-limiting factor for cell elongation growth was the cell wall extensibility. Furthermore, Cd 2 § was found to be more toxic than Pb 2+ , while Pb 2+ was more toxic than Zn 2+ .