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Lipid changes during pre‐germination and germination of striga asiatica seeds
Author(s) -
Menetrez M. L.,
Fites R. C.,
Wilson R. F.
Publication year - 1988
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02540693
Subject(s) - germination , biology , striga , seedling , haustorium , botany , scrophulariaceae , horticulture , host (biology) , ecology
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.