New and unusual forms of calcium oxalate raphide crystals in the plant kingdom

Thumbnail Image
Date
2014-11-01
Authors
Raman, Vijayasankar
Khan, Ikhlas
Major Professor
Advisor
Committee Member
Journal Title
Journal ISSN
Volume Title
Publisher
Authors
Person
Horner, Harry
University Professor Emeritus
Research Projects
Organizational Units
Organizational Unit
Genetics, Development and Cell Biology

The Department of Genetics, Development, and Cell Biology seeks to teach subcellular and cellular processes, genome dynamics, cell structure and function, and molecular mechanisms of development, in so doing offering a Major in Biology and a Major in Genetics.

History
The Department of Genetics, Development, and Cell Biology was founded in 2005.

Related Units

Journal Issue
Is Version Of
Versions
Series
Abstract

Calcium oxalate crystals in higher plants occur in five major forms namely raphides, styloids, prisms, druses and crystal sand. The form, shape and occurrence of calcium oxalate crystals in plants are species- and tissue-specific, hence the presence or absence of a particular type of crystal can be used as a taxonomic character. So far, four different types of needle-like raphide crystals have been reported in plants. The present work describes two new and unusual forms of raphide crystals from the tubers of Dioscorea polystachya—six-sided needles with pointed ends (Type V) and four-sided needles with beveled ends (Type VI). Both of these new types of needles are distinct from the other four types by each having a surrounding membrane that envelopes a bundle of 10–20 closely packed thin crystalline sheets. The previously known four types of needles have solid or homogenous crystalline material, surrounded by a membrane or lamellate sheath called a crystal chamber. Only the Type VI crystals have beveled ends and the needles of the other five types have pointed ends.

Comments

This is a manuscript of an article published as Raman, Vijayasankar, Harry T. Horner, and Ikhlas A. Khan. "New and unusual forms of calcium oxalate raphide crystals in the plant kingdom." Journal of plant research 127, no. 6 (2014): 721-730. doi: 10.1007/s10265-014-0654-y. Posted with permission.

Description
Keywords
Citation
DOI
Copyright
Wed Jan 01 00:00:00 UTC 2014
Collections