Vegetation History and Archaeobotany

, Volume 22, Issue 3, pp 165–170 | Cite as

Experimental investigation of pathogenic stress on phytolith formation in Cucurbita pepo var. texana (wild gourd)

  • Logan Kistler
  • Jennifer M. Haney
  • Lee A. Newsom
Original Article

Abstract

Silica phytoliths that form in plant tissues are useful to archaeologists because of their diagnostic value and longevity in ancient deposits. Palaeoecology, site formation processes, plant domestication, and other topics are routinely addressed using phytolith assemblages, especially when macrobotanical remains are not well preserved. However, little research has been conducted to document the effects of ecological variables on phytolith formation. Here, we investigate the effects of mosaic virus and bacterial wilt disease on diagnostic scalloped phytoliths in the rind of a wild-type Cucurbita pepo var texana (gourd). We observe a minimal change in phytolith size distribution between control plants and individuals with mosaic virus. However, we observe a notable difference between plants with bacterial wilt disease and control plants, with diseased individuals carrying a greater proportion of large-diameter scalloped phytoliths. This and similar phenomena could potentially confound archaeological interpretations of phytolith assemblages, and we suggest that the effects of this and other ecological variables should be studied in a diverse range of taxa.

Keywords

Phytoliths Silica Cucurbita pepo Bacterial wilt disease Mosaic virus 

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Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Logan Kistler
    • 1
  • Jennifer M. Haney
    • 1
  • Lee A. Newsom
    • 1
  1. 1.Department of AnthropologyThe Pennsylvania State UniversityState CollegeUSA

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