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A perspective on orchid seed and protocorm development.

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A perspective on orchid seed and protocorm development.

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Botanical studies [ 1817-406X ] ; 2017.

RBID : pubmed:28779349

Abstract

This perspective draws attention to the functional organization of orchid seed and protocorm during the course of development. The orchid embryos have a well-organized developmental plan generating a blue-print of a protocorm as they mature. The different phases of embryo development in orchids, i.e. histodifferentiation, storage product synthesis and accumulation, and maturation are essentially similar to other flowering plants. The protocorm is considered as a unique structure designed to establish symbiotic association with mycorrhizal fungi and with the primary goal to form a shoot apical meristem. This perspective brings forth arguments that the processes of embryo and protocorm development are highly programmed events, enhancing survival of orchid seeds and plantlets in their natural habitats. Furthermore, the ability of protocorm cells to divide, makes them ideal explants for micropropagation and transformation studies. Through seed germination and micropropagation using protocorms as explants, orchid conservation efforts are greatly enhanced.

DOI: 10.1186/s40529-017-0188-4
PubMed: 28779349
PubMed Central: PMC5544657

Affiliations:

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<author><name sortKey="Yeung, Edward C" sort="Yeung, Edward C" uniqKey="Yeung E" first="Edward C" last="Yeung">Edward C. Yeung</name>
<affiliation wicri:level="4"><nlm:affiliation>Department of Biological Sciences, University of Calgary, Calgary, AB, T2N 1N4, Canada. yeung@ucalgary.ca.</nlm:affiliation>
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<front><div type="abstract" xml:lang="en">This perspective draws attention to the functional organization of orchid seed and protocorm during the course of development. The orchid embryos have a well-organized developmental plan generating a blue-print of a protocorm as they mature. The different phases of embryo development in orchids, i.e. histodifferentiation, storage product synthesis and accumulation, and maturation are essentially similar to other flowering plants. The protocorm is considered as a unique structure designed to establish symbiotic association with mycorrhizal fungi and with the primary goal to form a shoot apical meristem. This perspective brings forth arguments that the processes of embryo and protocorm development are highly programmed events, enhancing survival of orchid seeds and plantlets in their natural habitats. Furthermore, the ability of protocorm cells to divide, makes them ideal explants for micropropagation and transformation studies. Through seed germination and micropropagation using protocorms as explants, orchid conservation efforts are greatly enhanced.</div>
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<Abstract><AbstractText>This perspective draws attention to the functional organization of orchid seed and protocorm during the course of development. The orchid embryos have a well-organized developmental plan generating a blue-print of a protocorm as they mature. The different phases of embryo development in orchids, i.e. histodifferentiation, storage product synthesis and accumulation, and maturation are essentially similar to other flowering plants. The protocorm is considered as a unique structure designed to establish symbiotic association with mycorrhizal fungi and with the primary goal to form a shoot apical meristem. This perspective brings forth arguments that the processes of embryo and protocorm development are highly programmed events, enhancing survival of orchid seeds and plantlets in their natural habitats. Furthermore, the ability of protocorm cells to divide, makes them ideal explants for micropropagation and transformation studies. Through seed germination and micropropagation using protocorms as explants, orchid conservation efforts are greatly enhanced.</AbstractText>
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<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Yeung</LastName>
<ForeName>Edward C</ForeName>
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<AffiliationInfo><Affiliation>Department of Biological Sciences, University of Calgary, Calgary, AB, T2N 1N4, Canada. yeung@ucalgary.ca.</Affiliation>
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<KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Embryo</Keyword>
<Keyword MajorTopicYN="N">Endosperm</Keyword>
<Keyword MajorTopicYN="N">Micropropagation</Keyword>
<Keyword MajorTopicYN="N">Orchid mycorrhizae</Keyword>
<Keyword MajorTopicYN="N">Phytohormones</Keyword>
<Keyword MajorTopicYN="N">Protocorm</Keyword>
<Keyword MajorTopicYN="N">Protocorm-like bodies</Keyword>
<Keyword MajorTopicYN="N">Regeneration</Keyword>
<Keyword MajorTopicYN="N">Seed coat</Keyword>
<Keyword MajorTopicYN="N">Shoot apical meristem</Keyword>
<Keyword MajorTopicYN="N">Suspensor</Keyword>
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A perspective on orchid seed and protocorm development.

A perspective on orchid seed and protocorm development.

Source :

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki