Waterlily, poppy, or sycamore: on the systematic position of Nelumbo

Barthlott, Wilhelm; Neinhuis, Christoph; Jetter, Reinhard; Bourauel, T.; Riederer, Markus

doi:10.1016/s0367-2530(17)30709-0

Cited by 51 publications

(28 citation statements)

References 18 publications

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“…Chase et al ., 1993; Savolainen et al ., 2000) justified the exclusion of Nelumbo and Ceratophyllum and substantiated the monophyly of Nymphaeales in the sense described above. The re‐evaluation of morphological characters showed the presence of certain states such as tricolpate pollen (Nandi, Chase & Endress, 1998) or epicuticular wax tubules mainly composed of nonacosan‐10‐ol (Barthlott et al ., 1996) in Nelumbo and further substantiated its exclusion from Nymphaeales. As already noted, contemporary treatments of Nymphaeales favour recognition of two families (Cabombaceae and Nymphaeaceae), although further families, such as Barclayaceae (Li, 1955; Takhtajan, 1987; Cronquist, 1988), Euryalaceae (Li, 1955), or Nupharaceae (Kerner von Marilaun, 1891; Nakai, 1943; Takhtajan, 1997) have been suggested (see Les, Garvin & Wimpee, 1991, for a review of taxonomic history).…”

Section: Introductionmentioning

confidence: 99%

Phylogenetic analysis of Nymphaeales using fast-evolving and noncoding chloroplast markers

Löhne¹,

Borsch²,

Wiersema³

2007

Botanical Journal of the Linnean Society

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The Nymphaeales (water-lilies and relatives) represent one of the earliest branching lineages of angiosperms and comprise about 70 aquatic species. Here, we present a comprehensive study of phylogenetic relationships within the Nymphaeales from a dataset containing 24 representatives of the order, including all currently recognized genera and all subgenera of the genus Nymphaea , plus 5 outgroup taxa. Nine different regions of the chloroplast genome − comprising spacers, group II introns, a group I intron, and a protein coding gene − were analysed. This resulted in a character matrix of 6597 positions and an additional 369 characters obtained from coded length mutations. Maximum parsimony and Bayesian analyses of the complete dataset yielded congruent, fully resolved and wellsupported trees. Our data confirm the monophyly of the Cabombaceae but do not provide convincing support for the monophyly of Nymphaeaceae with respect to Nuphar . Moreover, the genus Nymphaea is inferred to be paraphyletic with respect to Ondinea , Victoria and Euryale . In fact, the Australian endemic Ondinea forms a highly supported clade with members of the Australian Nymphaea subgenus Anecphya . In addition, Victoria and Euryale are inferred to be closely related to a clade comprising all night-blooming water-lilies ( Nymphaea subgenera Hydrocallis and Lotos ). An experimental approach showed taxon sampling to be of influence on the nodes reconstructed in core Nymphaeaceae. The results underscore that more diverse genera, if not clearly known to be monophyletic, should be represented by all major lineages.

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Section: Introductionmentioning

confidence: 99%

Phylogenetic analysis of Nymphaeales using fast-evolving and noncoding chloroplast markers

Löhne¹,

Borsch²,

Wiersema³

2007

Botanical Journal of the Linnean Society

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“…Cronquist, 1988). Past investigations have included studies of floral anatomy (e.g., Moseley and Uhl, 1985;Ito, 1986), leaf anatomy and alkaloids (e.g., Goleniewska-Furmanowa, 1970;Kristen, 1971;Rao and Banerjee, 1979;Barthlott et al, 1996), and seed anatomy (e.g., Collinson, 1980). However, there has been disagreement regarding this classification, and several studies have attempted to resolve the phylogenetic relationship of lotuses and water lilies.…”

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confidence: 99%

Pollen and anther development inNelumbo(Nelumbonaceae)

Kreunen

Osborn

1999

American J of Botany

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The Nelumbonaceae are a small family of aquatic angiosperms comprising Nelumbo nucifera and Nelumbo lutea. Historically, the genus has been considered to be closely related to Nymphaeales, however new systematic work has allied Nelumbo with lower eudicots, particularly Platanus. In recent years, studies of pollen development have contributed greatly to the understanding of phylogenetic relationships, but little has been known about these events in Nelumbo. In this paper, pollen and anther development are morphologically described for the first time in N. lutea. A comprehensive ontogenetic sequence is documented, including the sporogenous tissue, microspore mother cell, tetrad, free spore, and mature pollen grain stages. The deposition of a microspore mother cell coat and callose wall, the co-occurrence of both tetrahedral and tetragonal tetrads, the formation of a primexine in tetrads, and primexine persistence into the late free spore stage are shown. The majority of exine development occurs during the free spore stage with the deposition of a tectate-columellate ectexine, a lamellate endexine, and an unusual granular layer below and intermixed with the endexine lamellae. A two-layered intine forms rapidly during the earliest mature pollen stage. Major events of anther development documented include the degradation of a secretory-type tapetum during the free spore stage and the rapid formation of U-shaped endothecial thickenings in the mature pollen grain stage. The majority of mature pollen grains are tricolpate, however less common monosulcate and diaperturate grains also develop. Co-occurring aperture types in Nelumbo have been suggested to be an important transition in angiosperm aperture number. However, aperture variability in Nelumbo may be correlated with the lateness of aperture ontogeny in the genus, which occurs in the early free spore stage. This character, as well as other details of pollen and anther ontogeny in Nelumbo, are compared to those of Nymphaeales and Platanus in an effort to provide additional insight into systematic and phylogenetic relationships. Although Nelumbo is similar to both groups in several characters, the ontogenetic sequence of the genus is different in many ways.

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“…For the longest time scientist considered water lilies ( Nymphaea ) to be the closest relatives of lotus. However, epicuticular waxes, small tubules mainly composed of the secondary alcohol nonacosan-10-ol, as well as a specific group of alkaloids, implied that poppies (Papaveraceae) were more likely the sistergroup [42], results which were independently substantiated by molecular data [43]. …”

Section: So What Happened and What Can We Derive?mentioning

confidence: 99%

Innovations from the “ivory tower”: Wilhelm Barthlott and the paradigm shift in surface science

Neinhuis¹

2017

Beilstein J. Nanotechnol.

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This article is mainly about borders that have tremendous influence on our daily life, although many of them exist and act mostly unrecognized. In this article the first objective will be to address more generally the relation between university and society or industry, borders within universities, borders in thinking and the huge amount of misunderstandings and losses resulting from these obvious or hidden borders. In the second part and in more detail, the article will highlight the impact of the research conducted by Wilhelm Barthlott throughout his scientific career during which not only one border was removed, shifted or became more penetrable. Among the various fields of interest not mentioned here (e.g., systematics of Cactaceae, diversity and evolution of epiphytes, the unique natural history of isolated rocky outcrops called inselbergs, or the global distribution of biodiversity), plant surfaces and especially the tremendous diversity of minute structures on leaves, fruits, seeds and other parts of plants represent a common thread through 40 years of scientific career of Wilhelm Barthlott. Based on research that was regarded already old-fashioned in the 1970s and 1980s, systematic botany, results and knowledge were accumulated that, some 20 years later, initiated a fundamental turnover in how surfaces were recognized not only in biology, but even more evident in materials science.

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Waterlily, poppy, or sycamore: on the systematic position of Nelumbo

Cited by 51 publications

References 18 publications

Phylogenetic analysis of Nymphaeales using fast-evolving and noncoding chloroplast markers

Phylogenetic analysis of Nymphaeales using fast-evolving and noncoding chloroplast markers

Pollen and anther development inNelumbo(Nelumbonaceae)

Innovations from the “ivory tower”: Wilhelm Barthlott and the paradigm shift in surface science

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