EurekaMag.com logo
+ Site Statistics
References:
53,623,987
Abstracts:
29,492,080
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Studies on floral nectary, tepals' structure, and gynostemium morphology of Epipactis palustris (L.) Crantz (Orchidaceae)



Studies on floral nectary, tepals' structure, and gynostemium morphology of Epipactis palustris (L.) Crantz (Orchidaceae)



Protoplasma 252(1): 321-333



The lip of Epipactis palustris consists of two movably joined parts: the basal part (hypochile) with central broad isthmus and epichile with callus. The analysis of flowers provides strong evidence to conclude that the whole surface of lip callus and abaxial side of isthmus are secretory. The exudation at first appears on callus, at early stages, later on isthmus. It could be a strategy to prolong the emission of volatile substances and nectar, and this means to prolong luring pollinators. The results from transmission electron microscopy (TEM) support this conclusion. The plastids noted in callus were without starch, whereas the isthmus' cells contained partly hydrolyzed starch. Some plastids, noted in callus, had polymorphic shapes, which were often related to a starch reduction. During the depletion of starch in callus cells, the number of plastoglobuli within the plastids increased, and also lipid bodies appeared in the cytoplasm whereas, in isthmus cells, proplastids with phytoferritin were noted. The endoplasmic reticulum was in contact with plasmalemma, and the vesicles were fusing with plasmalemma in secretory cells of callus and isthmus, which is a way of granulocrine secretion. The cross-sections of sepals revealed that abaxial epidermis was tomentose, with stomata at the top of substomatal cavities. The pollen grains adhering to the rostellum-viscidium prove previous ecological observations that the rostellum-viscidium is not a barrier preventing self-pollination.

(PDF same-day service: $19.90)

Accession: 055968043

Download citation: RISBibTeXText

PMID: 25069658

DOI: 10.1007/s00709-014-0668-2



Related references

Floral nectary and osmophore of Epipactis helleborine (L.) Crantz (Orchidaceae). Protoplasma, 2018

Study of electrophoretic variability in epipactis helleborine l. crantz epipactis palustris l. crantz and epipactis microphylla ehrh. swartz family orchidaceae. Genetica (Dordrecht) 72(3): 217-224, 1987

Ant, bee and fly pollination in Epipactis palustris (L.) Crantz (Orchidaceae). Acta Botanica Neerlandica 30(1/2): 59-68, 1981

Gynostemium micromorphology and pollination in Epipactis microphylla (Orchidaceae). Journal of Plant Research 119(5): 431-437, 2006

Study of electrophoretic variability inEpipactis helleborine(L.) Crantz,E. palustris(L.) Crantz andE. microphylla(Ehrh.) Swartz (fam. Orchidaceae). Genetica 72(3): 217-224, 1987

Epipactis helleborine (L.) Crantz. (Orchidaceae). Madrono 40(4): 273, 1993

Epipactis palustris (L.) Crantz in natural and anthropogenic habitats. ECOLOGICAL QUESTIONS 3: 51-62, 2003

Some Orchidaceae from the west of France: Epipactis helleborine (L) Crantz. Bulletin 71 (2) 40-42, 1973

Ant bee and fly pollination in epipactis palustris orchidaceae. Acta Botanica Neerlandica 30(1-2): 59-68, 1981

The floral nectary of Epipactis atropurpurea. Some inframicroscopic aspects of the nectariferous layer. Bulletin de la Societe Botanique de France, Actualites Botaniques 129(1): 103-107, 1982

Pollination ecology of epipactis palustris orchidaceae. Botaniska Notiser 131(3): 355-368, 1978

Floral nectary of Epipactis atropurpurea Rafin. and some inframicroscopic aspects of the nectariferous layer. Bulletin de la Societe botanique de France: actualites botaniques29(1): 103-107, 1982

Ultrastructural changes during mega sporogenesis in epipactis palustris orchidaceae. Acta Societatis Botanicorum Poloniae2: 127-130, 1981

Why do pollinators become sluggish? Nectar chemicals constituents from Epipactis helleborine (L.) Crantz (Orchidaceae). Applied Ecology and Environmental Research 3(2): 29-38, 2005

Selfing potential in Epipactis palustris , E. helleborine and E. atrorubens (Orchidaceae). Plant Systematics and Evolution 276(1-2): 21-29, 2008