Occurrence and levels of ecdysteroids in spinach | Zendy

Grebenok Robert J. | Zendy; Ripa Perry V. | Zendy; Adler John H. | Zendy

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Occurrence and levels of ecdysteroids in spinach

Author(s) -

Grebenok Robert J.,

Ripa Perry V.,

Adler John H.

Publication year - 1991

Publication title -

lipids

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.601

H-Index - 120

eISSN - 1558-9307

pISSN - 0024-4201

DOI - 10.1007/bf02536433

Subject(s) - ecdysteroid , spinach , spinacia , clinical chemistry , 20 hydroxyecdysone , biology , sterol , endocrinology , medicine , botany , chemistry , biochemistry , hormone , cholesterol , chloroplast , gene

The dominant ecdysteroid in spinach, Spinacia oleracea L., is 20‐hydroxyecdysone (2β,3β,14α, 20R,22R,25‐hexahydroxy‐5β‐cholest‐7‐en‐6‐one) with the presence of a smaller amount of polypodine B (2β,3β,5β,14α,20R,22R,25‐heptahydroxycholest‐7‐en‐6‐one). Ecdysteroids are present in the seed embryo at 14 μg ecdysteroid/seed, and ecdysteroid levels increase, in the plant during growth and development. During the onset of ecdysteroid production, the ratio of ecdysteroid to total sterol shifts from a value of one to about ten over the course of a week. Spinach may serve as a model to study ecdysteroid biosynthesis in plants.

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