Pollen morphology and its phylogenetic significance in tribe Sanguisorbeae (Rosaceae)

Chung, Kyong‐Sook; Elisens, Wayne J.; Skvarla, John J.

doi:10.1007/s00606-009-0262-9

Cited by 40 publications

(33 citation statements)

References 22 publications

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“…In Boragineae, most of these transitions are in single species, but in Lithospermeae, shifts in pollen pore number tend to characterize larger clades. In general, pollen pore number in Boraginaceae has increased from three pores to six or greater, a trend observed in other groups as well, such as Cuscuta L. (Welsh et al., ), Dioscorea L. (Schols et al., ), and Sanguisorbeae (Chung et al., ). Dajoz et al.…”

Section: Discussionmentioning

confidence: 72%

A phylogenetic analysis of morphological and molecular characters of Boraginaceae: evolutionary relationships, taxonomy, and patterns of character evolution

Cohen

2013

Cladistics

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The angiosperm family Boraginaceae includes ca. 1600 species distributed among ca. 110 genera. Some floral features are constant within the family, but many vegetative, floral, pollen, and nutlet traits vary. Utilizing 224 species of Boraginaceae and related taxa, five matrices were constructed with various combinations of morphological characters, three chloroplast DNA regions, and one nuclear ribosomal DNA region. Phylogenetic analyses were conducted for these matrices, and patterns of character evolution were examined. Boraginaceae is resolved as monophyletic, with Wellstedia as its sister. Codon is sister to Boraginaceae + Wellstedia. Although most of the investigated morphological characters have a low consistency index, particular character states are synapomorphies for large clades in each of the tribes of the family. In Boraginaceae, the breeding system heterostyly evolved at least 12 times, which is the largest number of origins resolved in any family; therefore Boraginaceae can serve as a model for the evolution and development of heterostyly. Nutlet ornamentation is most diverse in Cynoglosseae and Trichodesmeae, while pollen and floral features are most variable in Boragineae and Lithospermeae. Phylogenetic relationships and patterns of character evolution identified in the present study set the stage for future work creating an updated taxonomic system of Boraginaceae.

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Section: Discussionmentioning

confidence: 72%

A phylogenetic analysis of morphological and molecular characters of Boraginaceae: evolutionary relationships, taxonomy, and patterns of character evolution

Cohen

2013

Cladistics

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“…Taxonomists and botanists have recognized the importance of pollen morphology in clarifying the classification of many plants: in particular Hebda et al [10] showed that exine sculpturing, aperture and aperture zone structure, grain shape and grain size are all useful features to distinguish genera and even species of rosaceous pollen; Fogle [5,6] demonstrated species-specific variation in pollen size and in exine sculpturing among the fruit-crop of the genera Malus Mill., Prunus L. (peaches and cherries), and Pyrus L. [14]; Moore et al [15] have emphasized a very large differentiation of pollen morphology of the taxa of Rosaceae family, even among the populations within the same species. They thought the pollen size to be the least reliable feature and they related it to the comparatively frequent occurrence of hybrid and polyploid species in this family.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the pollen morphology of traditional cultivars of Prunus species in Sicily

Geraci¹,

Polizzano²,

Marino³

et al. 2012

Acta Soc Bot Pol

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In this study pollen grains of 13 cultivars and 3 rootstocks belonging to 5 species (P. armeniaca, P. domestica, P. dulcis, P. persica, P. avium) of the genus Prunus collected from North-East Sicily were examined for the micromorphological characterization through the scanning electron microscopy (SEM). The length of polar axis (P) and the equatorial diameter (E) of grain, P/E ratio, the length of colpi (C), diameter of perforations (DP) and the number of perforations in 25 µm 2 (PN), the width of muri (WM), the distance between muri (DM) and their number in 25 µm 2 (MN), the width of grooves (WG) were measured and their variation was compared among studied taxa. Moreover multivariate statistical analysis was carried out to distinguish morphometric information from measured parameters. All pollen grains are trizonocolpate, isopolar, medium-large sized and their shape varies from prolate to perprolate. Regarding outline pollen grains are subtriangular in polar view and elliptic in equatorial view. Exine sculpturing is striate with perforations on grain surface. The arrangement of ridges appears roughly parallel but too sloped (sometimes curved) compared to polar axis, or branched and oriented in different directions, or perfectly parallel or more irregular with bifurcated ridges often sinuous. The analyses showed a great variability (particularly in P. domestica cultivars) related in some cases to the diversity in the morphological features of the leaves and the fruits of the investigated entities. Keywords: pollen morphology, SEM, Sicilian Prunus, species, cultivarsActa Societatis Botanicorum Poloniae

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“…The basic pollen morphology of all three rosaceous subfamilies (see Potter et al 2007) and many genera/species of the tribes and subtribes within Rosaceae have been studied to some extent. Pollen types of the subfamily Rosoideae have been studied using mostly LM and SEM by Huang (1972), Hebda et al (1988aHebda et al ( , 1988b, Hebda and Chinnappa (1990), Jones et al (1995), Wang et al (1995), Beug (2004), Tahir (2005), Fujiki and Ozawa (2007), Chung et al (2010), Li et al (2011a), Miyoshi et al (2011), Wrońska-Pilarek (2011), Wrońska-Pilarek and Jagodziński (2011), Wrońska-Pilarek et al (2012, Perveen and Qaiser (2014) and Faghir et al (2015). The subfamily Dryadoideae has been studied by Hebda et al (1988b) and Beug (2004).…”

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confidence: 99%

Combined LM and SEM study of the middle Miocene (Sarmatian) palynoflora from the Lavanttal Basin, Austria: part IV. Magnoliophyta 2 – Fagales to Rosales

Grímsson

Bouchal

Xafis

et al. 2015

Grana

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Pollen morphology and its phylogenetic significance in tribe Sanguisorbeae (Rosaceae)

Cited by 40 publications

References 22 publications

A phylogenetic analysis of morphological and molecular characters of Boraginaceae: evolutionary relationships, taxonomy, and patterns of character evolution

A phylogenetic analysis of morphological and molecular characters of Boraginaceae: evolutionary relationships, taxonomy, and patterns of character evolution

Investigation on the pollen morphology of traditional cultivars of Prunus species in Sicily

Combined LM and SEM study of the middle Miocene (Sarmatian) palynoflora from the Lavanttal Basin, Austria: part IV. Magnoliophyta 2 – Fagales to Rosales

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