TITLE

Morphological studies of developing Rubus prickles suggest that they are modified glandular trichomes

AUTHOR(S)
Kellogg, Allicia A.; Branaman, Tatum J.; Jones, Nathan M.; Little, Coleman Z.; Swanson, John-David
PUB. DATE
April 2011
SOURCE
Botany;Apr2011, Vol. 89 Issue 4, p217
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Prickles are defined as outgrowths of epidermal tissues and can provide a simple developmental system for the study of the control of cell proliferation and growth. Setting the stage for future studies on gene regulation in the genus (brambles), a detailed analysis and staging series of prickle development in (red raspberry) is presented and compared with (blackberry) and (rose). Morphological measurements from light and scanning electron micrographs were used to subdivide prickle development into four stages. Our studies indicate that raspberry and rose prickles are modified glandular trichomes continuing to grow and eventually hardening into their final prickle morphologies as outgrowths of epidermal tissue. Although glandular trichomes seem to be involved in blackberry prickle development, our studies indicate that these prickles do not follow the same developmental progression as raspberry, suggesting a potential evolutionary deviation from what is commonly seen in raspberry and rose.
ACCESSION #
65537143

 

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