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Lipid changes during pre-germination and germination ofstriga asiatica seeds

  • M. L. Menetrez
  • R. C. Fites
  • R. F. Wilson
Technical

Abstract

Witchweed (Striga asiatica L. Kuntze) seeds were incubated at 28 C in a moist environment for a 14-day period, after which seeds germinated only when exposed to specific natural or synthetic germination stimulants. Changes in lipid composition were determined during germination of witchweed seeds and during early seedling growth. Witchweed seeds contained 37.5% (w/w) oil. Increased levels of monogalactosyl-diacylglycerol and phosphatidylglycerol suggested the enlargement or multiplication of plastids after witchweed seeds had germinated. In contrast to the usual course of events in seeds with high oil reserves, witchweed seeds did not hydrolyze triacylglycerol rapidly during or after germination. These findings indicated that triacylglycerol in germinating witchweed seeds was conserved for subsequent use during haustorial formation and host invasion.

Keywords

Radicle Protrusion Germination Stimulant Total Polar Lipid Monogalactosyl Methyl Myristate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© AOCS Press 1988

Authors and Affiliations

  • M. L. Menetrez
    • 2
  • R. C. Fites
    • 2
  • R. F. Wilson
    • 1
  1. 1.ARS/USDA, Department of Crop ScienceNorth Carolina State UniversityRaleigh
  2. 2.Department of BotanyNorth Carolina State UniversityRaleigh

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