The floral nectaries in theLimnanthaceae

Link, Detlef A.

doi:10.1007/bf00937599

Cited by 12 publications

(2 citation statements)

References 13 publications

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“…Nectaries are nectar‐producing organs that are located inside the flowers (floral) or outside them (extra‐floral) (Fahn, 1988; Rogers, 1985). Nectaries are attached to the base of the filament (Link, 1992), the ovary or other floral organs (Galetto, 1995). Nectar is composed of sugars, but small amounts of other substances may also be present (Fahn, 1979; Vogel et al ., 1983).…”

Section: Introductionmentioning

confidence: 99%

NEC1, a novel gene, highly expressed in nectary tissue of Petunia hybrida

Angenent

Wittich

et al. 2000

The Plant Journal

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SummaryTo study the molecular regulation of nectary development, we cloned NEC1, a gene predominantly expressed in the nectaries of Petunia hybrida, by using the differential display RT±PCR technique. The secondary structure of the putative NEC1 protein is reminiscent of a transmembrane protein, indicating that the protein is incorporated into the cell membrane or the cytoplast membrane. Immunolocalization revealed that NEC1 protein is present in the nectaries. Northern blot analyses showed that NEC1 is highly expressed in nectary tissue and weakly in the stamen. GUS expression driven by the NEC1 promoter revealed GUS activity in the outer nectary parenchyma cells, the upper part of the ®lament and the anther stomium. The same expression pattern was observed in Brassica napus. GUS expression was observed as blue spots on the surface of very young nectaries that do not secrete nectar and do accumulate starch. GUS expression was highest in open¯owers in which active secretion of nectar and starch hydrolysis had taken place. Ectopic expression of NEC1 resulted in transgenic plants that displayed a phenotype with leaves having 3±4 times more phloem bundles in mid-veins than the wildtype Petunia. The possible role of NEC1 gene in sugar metabolism and nectar secretion is discussed.

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Section: Introductionmentioning

confidence: 99%

NEC1, a novel gene, highly expressed in nectary tissue of Petunia hybrida

Angenent

Wittich

et al. 2000

The Plant Journal

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“…The nectaries appeared to form directly from the tissue of the fi lament. The appearance and structure of fl ax fl oral nectaries were similar to those in the Limnanthaceae ( Link, 1992 ). Stomata were present on the upper surface of the base of the fl ask-shaped gland, and nectar was present on this surface before anthesis.…”

Section: Discussionmentioning

confidence: 95%

Ontogeny of floral organs in flax (Linum usitatissimum; Linaceae)

Schewe

Sawhney

Davis

2011

American J of Botany

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• Premise of the study: Flax (Linum usitatissimum) is an important crop worldwide; however, a detailed study on flower development of this species is lacking. Here we describe the pattern of initiation and a program of key developmental events in flax flower ontogeny. This study provides important fundamental information for future research in various aspects of flax biology and biotechnology.• Methods: Floral buds and organs were measured throughout development and examined using scanning electron microscopy.• Key results: Floral organs were initiated in the following sequence: sepals, stamens and petals, gynoecium, and nectaries. The five sepals originated in a helical pattern, followed evidently by simultaneous initiation of five stamens and five petals, the former opposite of the sepals and the latter alternate to them. The gynoecium, with five carpels, was produced from the remaining, central region of the floral apex. Stamens at early stages were dominated by anther growth but filaments elongated rapidly shortly before anthesis. Early gynoecium development occurred predominantly in the ovary, and ovule initiation began prior to enclosure of carpels. A characteristic feature was the twisted growth of styles, accompanied by the differentiation of papillate stigmas. Petal growth lagged behind that of other floral organs, but petals eventually grew rapidly to enclose the inner whorls after style elongation. Flask‐shaped nectaries bearing stomata developed on the external surface of the filament bases.• Conclusions: This is the first detailed study on flax floral organ development and has established a key of 12 developmental stages, which should be useful to flax researchers.

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Meadowfoam Breeding

Kling¹

2020

Plant Breeding Reviews

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The floral nectaries in theLimnanthaceae

Cited by 12 publications

References 13 publications

NEC1, a novel gene, highly expressed in nectary tissue of Petunia hybrida

NEC1, a novel gene, highly expressed in nectary tissue of Petunia hybrida

Ontogeny of floral organs in flax (Linum usitatissimum; Linaceae)

Meadowfoam Breeding

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