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Do palm trees hold the key to immortality?
Date:12/19/2012

g-distance transport function without replacement throughout the life of the stem, which could be for centuries.

Despite several unique characteristics of palms, including the ability to sustain metabolically active cells in the absence of secondary tissues, seemingly indefinitely, unlike conventional trees, in which metabolically active cells are relatively short-lived, the authors do not conclude that the extended life span of palms is genetically determined.

"We are not saying that palms have the secret of eternal youth, and indeed claim no special chemical features which allows cells in certain organisms to retain fully differentiated cells with an indefinite lifespan," states Tomlinson. "Rather, we emphasize the distinctive developmental features of palm stems compared with those in conventional trees."

Tomlinson indicates that this reflects the neglect of the teaching of palm structure in modern biology courses. "This paper raises incompletely understood aspects of the structure and development of palms, emphasizing great diversity in these features," he concludes. "This approach needs elaborating in much greater detail, difficult though the subject is in terms of conventional approaches to plant anatomy."


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Contact: Richard Hund
rhund@botany.org
314-577-9557
American Journal of Botany
Source:Eurekalert  

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