To attract or to repel? Diversity, evolution and role of the “most peculiar organ” in the Cuscuta flower (dodder, Convolvulaceae)—the infrastaminal scales

Riviere, Stephanie; Clayson, Courtney; Dockstader, Kristy; Wright, Michael A.; Costea, Mihai

doi:10.1007/s00606-012-0741-2

Cited by 22 publications

(22 citation statements)

References 46 publications

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“…Analysis of character polarity in Cuscuta using formal outgroup analysis is hindered by the unresolved position of Cuscuta in Convolvulaceae (Stefanović and Olmstead, 2004). Thus, to reconstruct ancestral character states in Cuscuta we analyzed the distribution of character states in-group (Welsh et al, 2010;Wright et al, 2011;Riviere et al, 2013). Adding putative outgroup Convolvulaceae and coding them with a different character state than the in-group Cuscuta (García et al, 2014) produced similar results (results not shown).…”

Section: Character Evolutionsupporting

confidence: 70%

“…In subg. Grammica, the presence of floral SPs, their shape and position are homoplastic, however, this is the general situation of other morphological characters both in Grammica and Cuscuta more broadly (Welsh et al, 2010;Wright et al, 2011Wright et al, , 2012Riviere et al, 2013;García et al, 2014). Although floral SP characters alone are insufficient to infer phylogenetic relationships among sections of subg.…”

Section: Systematic Significance Of Multicellular Protuberancesmentioning

confidence: 91%

“…Stem fragments and flowers removed from herbarium specimens were rehydrated in 50% ethanol (Riviere et al, 2013), examined with a Nikon SMZ1500 stereomicroscope, and imaged using Pax-it 7.5 software and a PaxCam Arc digital camera (MIS Inc. 2014, Villa Park, IL). For the micromorphological observations, rehydrated stem fragments, calyces and corollas were subjected to a hexamethyldisilazane (HMDS) treatment as an alternative to critical point drying (Wright et al, 2011).…”

Section: Methodsmentioning

confidence: 99%

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Diversity, evolution, and function of stomata bearing structures in Cuscuta (dodders, Convolvulaceae): From extrafloral nectar secretion to transpiration in arid conditions

Clayson

Ruiz

Costea

2014

Perspectives in Plant Ecology, Evolution and Systematics

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Section: Character Evolutionsupporting

confidence: 70%

Section: Systematic Significance Of Multicellular Protuberancesmentioning

confidence: 91%

Section: Methodsmentioning

confidence: 99%

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Diversity, evolution, and function of stomata bearing structures in Cuscuta (dodders, Convolvulaceae): From extrafloral nectar secretion to transpiration in arid conditions

Clayson

Ruiz

Costea

2014

Perspectives in Plant Ecology, Evolution and Systematics

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“…Infrastaminal scale fimbriae belong to Cuscuta type (Riviere et al 2013), with a terminal distal laticifer. While in most species, fimbriae are cylindrical (Fig.…”

Section: Resultsmentioning

confidence: 99%

Cladogenesis and reticulation in Cuscuta sect. Denticulatae (Convolvulaceae)

et al. 2018

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As traditionally circumscribed, Cuscuta sect. Denticulatae is a group of three parasitic plant species native to the deserts of Western USA ( Cuscuta denticulata , Cuscuta nevadensis ) and the central region of Baja California, Mexico ( Cuscuta veatchii ). Molecular phylogenetic studies confirmed the monophyly of this group and suggested that the disjunct C. veatchii is a hybrid between the other two species. However, the limited sampling left the possibility of alternative biological and methodological explanations. We expanded our sampling to multiple individuals of all the species collected from across their entire geographical ranges. Sequence data from the nuclear and plastid regions were used to reconstruct the phylogeny and find out if the topological conflict was maintained. We obtained karyotype information from multiple individuals, investigated the morphological variation of the group thorough morphometric analyses, and compiled data on ecology, host range, and geographical distribution. Our results confirmed that C. veatchii is an allotetraploid. Furthermore, we found previously unknown autotetraploid population of C. denticulata , and we describe a new hybrid species, Cuscuta psorothamnensis . We suggest that this newly discovered natural hybrid is resulting from an independent (and probably more recent) hybridization event between the same diploid parental species as those of C. veatchii . All the polyploids showed host shift associated with hybridization and/or polyploidy and are found growing on hosts that are rarely or never frequented by their diploid progenitors. The great potential of this group as a model to study host shift in parasitic plants associated with recurrent allopolyploidy is discussed. Electronic supplementary material The online version of this article (10.1007/s13127-018-0383-5) contains supplementary material, which is available to authorized users.

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To attract or to repel? Diversity, evolution and role of the “most peculiar organ” in the Cuscuta flower (dodder, Convolvulaceae)—the infrastaminal scales

Cited by 22 publications

References 46 publications

Diversity, evolution, and function of stomata bearing structures in Cuscuta (dodders, Convolvulaceae): From extrafloral nectar secretion to transpiration in arid conditions

Diversity, evolution, and function of stomata bearing structures in Cuscuta (dodders, Convolvulaceae): From extrafloral nectar secretion to transpiration in arid conditions

More Problems Despite Bigger Flowers: Systematics of <I>Cuscuta tinctoria</I> Clade (subgenus <I>Grammica</I>, Convolvulaceae) with Description of Six New Species

Cladogenesis and reticulation in Cuscuta sect. Denticulatae (Convolvulaceae)

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