Nectar production in the pollen flower of Anemone nemorosa in comparison with other Ranunculaceae and Magnolia (Magnoliaceae)

Erbar, Claudia; Leins, Peter

doi:10.1007/s13127-013-0131-9

Cited by 28 publications

(18 citation statements)

References 42 publications

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“…Several mutually nonexclusive functions have been proposed for the presence of sugars in and on the stigmas. These include providing a medium for pollen germination (Herrero and Dickinson, 1979; Rodrigo et al, 2009; Lora et al, 2010; Nepi et al, 2012), serving as a pollinator reward (Armstrong and Irvine, 1990; Thien et al, 2009; Erbar and Leins, 2013), and possibly aiding in desiccation avoidance (Feild et al, 2009; Nepi et al, 2012). Interestingly, in protogynous flowers nectar is mainly limited to the female phase (for a review, see Erbar, 2014).…”

Section: Discussionmentioning

confidence: 99%

Arabinogalactan proteins mark stigmatic receptivity in the protogynous flowers of Magnolia virginiana (Magnoliaceae)

Losada

Herrero

Hormaza

et al. 2014

American J of Botany

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These results show that the period of stigmatic receptivity is finely coordinated with the secretion of two arabinogalactan proteins on stigmas of flowers of M. virginiana. This first report of AGP presence in stigmatic tissues in a member of the magnoliids, together with recently described similar patterns in eudicots, monocots, and members of early-divergent lineages of flowering plants, suggests an ancient and widespread role for AGPs on stigmatic receptivity in angiosperms.

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Section: Discussionmentioning

confidence: 99%

Arabinogalactan proteins mark stigmatic receptivity in the protogynous flowers of Magnolia virginiana (Magnoliaceae)

Losada

Herrero

Hormaza

et al. 2014

American J of Botany

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“…The floral nectaries of many species form a protrusion of the organ that bears them, but we found that the nectaries in L. tulipifera are flush with the surface [49,50]. The nectaries in Coptis and Hydrastis of Ranunculaceae, members of the basal eudicots, are located on the petals and flush with the surface, which are similar to the features of nectaries in L. tulipifera [51]. In monocots, the nectaries are septal nectaries and are exclusive to this lineage, and in core eudicots, intrastaminal nectaries are common, followed sequentially by gynoecial, extrastaminal, hypanthial, petal and sepal nectaries [48,52].…”

Section: Rt-qpcr Analysis Of Nectary-related Genesmentioning

confidence: 50%

Transcriptomic and microstructural analyses in Liriodendron tulipifera Linn. reveal candidate genes involved in nectary development and nectar secretion

Liu

2019

Preprint

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Background: Nectar is a major floral attractant and reward for insects that ensures pollination. Liriodendron, a genus of the Magnoliaceae family, includes only two relict species, L. chinense and L. tulipifera, which are considered “basal angiosperms” according to plant evolutionary history. The flowers of Liriodendron plants are insect pollinated and secrete nectar to attract pollinators. To date, the morphology and anatomy of nectaries, the mechanism of nectar secretion and the molecular mechanism of nectary development in Liriodendron remain poorly understood. Methods: In this study, we examined the nectary surface cells and change in starch in L. tulipifera by using scanning electron microscopy and periodic acid-Schiff techniques to select appropriate samples for subsequent research. Transcriptome sequencing was of the top and middle parts of immature nectaries and the middle part of mature and postsecretory nectaries in L. tulipifera was performed. We evaluated the expression profiles of 21 DEGs that are closely related to nectary development and nectar secretion for real-time quantitative PCR analysis. Results: L. tulipifera nectaries are starch-storing nectaries and are located in the top and middle parts of L. tulipifera petals. After analyzing the RNA-seq data, we obtained 115.26 Gb of clean data in 12 libraries and mapped the results to the L. chinense reference genome with 71.02%-79.77% efficiency. In total, 26,955 DEGs were identified by performing six pairwise comparisons. The flavonoid biosynthesis, phenylpropanoid biosynthesis, anthocyanin biosynthesis and starch and sucrose metabolism pathways were enriched and related to nectar secretion and pigment change. We identified 56 transcription factor families, and members of the TCP, Trihelix, C2H2, ERF, and MADS families changed dynamically during nectary development. Moreover, to further verify the accuracy of the RNA-seq results, we validated the expression profiles of 21 candidate genes. Conclusions: We evaluated the nectary development and secretion processes comprehensively and identified many related candidate genes in L. tulipifera. These findings suggest that nectaries play important roles in flavonoid synthesis and petal color presentation.

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“…In the case of this strategy high pollen production is needed as a signifi cant proportion of the produced pollen functions as forage. As a consequence it is not surprising that the ratio of pollens and ovules is high like in the case of wind pollinated species (Erbar & Leins 2013, Turcsányi 2001.…”

Section: Introductionmentioning

confidence: 99%

Pollinators (Hymenoptera: Aculeata) of Adonis vernalis in Trans danubia (Hungary)

Mészáros¹,

Józan²

2018

Studia bot hung

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We have to know the biology and ecology of species to help the eff ective conservation of protected species. Although the knowledge of pollination strategy is an important factor, our knowledge is poor even in the case of intensively studied species. It is necessary to know the plantpollinator interactions and the requirements of eff ective gene fl ow for the maintenance of populations. Th e pollinators of Adonis vernalis L. (Ranunculaceae) were studied in 2017 and 2018 on the Csatár Hill near Veszprém, in Szentkirályszabadja, Csajág and Veszprém-Kádárta (Hungary). Th e number of collected Lasioglossum specimens was extremely high (433), followed by Apis mellifera (44), Andrena (23), and Halictus (23). We also collected specimens of Bombus, Polistes, Vespula, and Osmia genera. 5 males were also collected during the studies. It is probable that the males followed females (A. vernalis does not produce nectar) but they can function as pollinators thanks to their moving on the fl owers. Th e visitation rate was the highest between 10-14 hours. Our new results can be useful to have more complete knowledge on the biology and ecology of A. vernalis and can help to develop the conservation strategy of the species.

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Nectar production in the pollen flower of Anemone nemorosa in comparison with other Ranunculaceae and Magnolia (Magnoliaceae)

Cited by 28 publications

References 42 publications

Arabinogalactan proteins mark stigmatic receptivity in the protogynous flowers of Magnolia virginiana (Magnoliaceae)

Arabinogalactan proteins mark stigmatic receptivity in the protogynous flowers of Magnolia virginiana (Magnoliaceae)

Transcriptomic and microstructural analyses in Liriodendron tulipifera Linn. reveal candidate genes involved in nectary development and nectar secretion

Pollinators (Hymenoptera: Aculeata) of Adonis vernalis in Trans danubia (Hungary)

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