Broad-Scale Integrity and Local Divergence in the Fiddlehead Fern Matteuccia struthiopteris (L.) Todaro (Onocleaceae)
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چکیده
منابع مشابه
Chloroplast Division in the Gametophyte of the Fern Matteuccia Struthiopteris (l.) Todaro
The mechanism by which fully developed chloroplasts divide has been reported to consist of an initial constriction around the entire chloroplast, which is followed by a p inching into two daugh te r chloroplasts. Constr ict ion is accompanied by fusion of the inner and outer layers of the chloroplast membrane . Such a division has been documented by electron microscopy for the brown alga, Fucus...
متن کاملDifferential Response in the Water Status of Immature and Mature Fronds of the Ostrich Fern (Matteuccia struthiopteris [L.] Todaro) to a Mild Water Stress.
Experiments were conducted in growth chambers to examine the effect of a mild water stress (-200 kilopascals polyethylene glycol) on frond elongation and water status of the ostrich fern (Matteuccia struthiopteris [L.] Todaro). Measurements were taken for two days, starting one day after the application of polyethylene glycol. Total water potential in control (well-watered) plants was always si...
متن کاملBiologic effects of plant toxins and aflatoxins in rats.
After weaning, groups of rats were fed a semi-purified diet containing fiddlehead greens (the unfuried frond of the ostrich fern Matteuccia struthiopteris), mature bracken fern (Pteridium aquilinum), or cycad meal (Cycas circinalis), or this diet plus aflatoxin B1. The groups fed 1-10% fiddlehead greens for 70-73 weeks developed no tumors, whereas those fed mature bracken fern for 67 weeks deve...
متن کاملتأثیر عصارۀ اکدیستروئیدی سرخس شترمرغی Matteuccia struthiopteris (Onocleaceae) روی پارامتر‌های دموگرافی شب‌پرۀ پشت‌الماسی Plutella xylostella L. (Lepidoptera:Plutellidae)
امروزه بررسی‌‌ها برای استفاده از عصاره‌‌های گیاهی مانند اکدیستروئید‌‌های گیاهی، به دلیل توانایی بالا در کنترل آفات در حال افزایش است. گزارش‌‌هایی از وجود ترکیبات اکدیستروئیدی در برخی گونه‌‌های سرخس وجود دارد، اما تاکنون گزارشی از اثر چنین ترکیباتی در سرخس شترمرغی در دست نیست. در این پژوهش، اثر غلظت‌‌های زیرکشندۀ عصارۀ متانولی گیاه سرخس شترمرغی Matteuccia struthiopteris (L.) (Onocleaceae) روی شب...
متن کاملDolichols of the fern Matteucia struthiopteris.
Dolichols isolated from leaves of the fern Matteucia struthiopteris were present as a mixture of prenologues composed of 14 up to 20 isoprene units with Dol-16 dominating. They comprised approximately 0.004% of the fresh weight of fresh plant tissue and were accompanied by traces of polyprenols (Pren-14 up to Pren-17, Pren-16 dominating). Their structure was confirmed by electropray ionization ...
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ژورنال
عنوان ژورنال: American Fern Journal
سال: 2011
ISSN: 0002-8444,1938-422X
DOI: 10.1640/0002-8444-101.4.213