Chromosome numbers for the Italian flora: 12

Italian Botanist ◽

10.3897/italianbotanist.12.79031 ◽

2021 ◽

Vol 12 ◽

pp. 123-131

Author(s):

Giovanni Astuti ◽

Fabrizio Bartolucci ◽

Fabio Conti ◽

Beatrice Cera ◽

Antonio Giacò ◽

...

Keyword(s):

Chromosome Numbers ◽

Chromosome Count ◽

Italian Flora

In this contribution, new chromosome data obtained on material collected in Italy are presented. It includes the first counts for Hieracium glanduliferum s.str. and H. tenuiflorum, counts for two Armeria species endemic to Italy, and for Onopordum illyricum subsp. illyricum. We also present here the first chromosome count of Allium permixtum for Italy, where this species is known for few localities.

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New Contribution to the Knowledge on the Chromosome Numbers of Turkish Cerambycidae (Coleoptera)

Folia Biologica ◽

10.3409/fb_69-2.11 ◽

2021 ◽

Vol 69 (2) ◽

pp. 93-99

Author(s):

Yavuz Koçak ◽

Elmas Yağmur

Keyword(s):

Chromosome Number ◽

Sex Determination ◽

Chromosome Numbers ◽

Chromosome Count ◽

Chromosomal Number ◽

The Poor ◽

Karyological Data ◽

First Time

Information on the karyotypes of Turkish species of Cerambycidae is scanty. Our study contributes to the knowledge of the karyological data (chromosomal number and mechanism of sex determination) of five Turkish longicorn beetles; karyotypes of four taxa, one endemic, are described for the first time and for the remaining one, Purpuricenus budensis (Götz, 1783), the previously published chromosome count is confirmed. The chromosome number of Purpuricenus desfontainii inhumeralis Pic, 1891 and Purpuricenus budensis (Götz, 1783) (Cerambycinae, Trachyderini) was found to be 2n = 28 (13 + Xyp); Clytus rhamni Germar, 1817 and Plagionotus floralis (Pallas, 1773) (Cerambycinae, Clytini) 2n = 20 (9 + Xyp); and the endemic Dorcadion triste phrygicum Peks, 1993 (Lamiinae, Dorcadionini) 2n = 24 (11 + Xyp). In view of the paucity of data available until now, our study is important for both to improve the poor karyological knowledge of Turkish Cerambycidae and to provide an incentive for other researchers.

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Chromosome numbers for the Italian flora: 4

Italian Botanist ◽

10.3897/italianbotanist.4.21782 ◽

2017 ◽

Vol 4 ◽

pp. 53-59

Author(s):

Lorenzo Peruzzi ◽

Raquel Chiavegatto ◽

Marco D'Antraccoli ◽

David Dolci ◽

Francesco Roma-Marzio

Keyword(s):

Chromosome Numbers ◽

Chromosome Counts ◽

Italian Flora

In this contribution new chromosome data obtained on material collected in Italy are presented. It includes 9 chromosome counts for Polygala (Polygalaceae), Dianthus and Silene (Caryophyllaceae).

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Chromosome numbers for the Italian flora: 8

Italian Botanist ◽

10.3897/italianbotanist.8.49156 ◽

2019 ◽

Vol 8 ◽

pp. 117-121 ◽

Cited By ~ 2

Author(s):

Giovanni Astuti ◽

Fabrizio Bartolucci ◽

Liliana Bernardo ◽

Fabio Conti ◽

Lorenzo Peruzzi

Keyword(s):

Chromosome Numbers ◽

Southern Italy ◽

Chromosome Counts ◽

Italian Flora

In this contribution, new chromosome data obtained on material collected in Italy are presented. It includes three chromosome counts from two taxa endemic to Southern Italy (Centaurea subtilis and Onobrychis alba subsp. echinata) and one species (Poa ligulata) occurring in Italy with only one recently discovered population.

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Chromosome numbers for the Italian flora: 9

Italian Botanist ◽

10.3897/italianbotanist.9.54973 ◽

2020 ◽

Vol 9 ◽

pp. 101-110

Author(s):

Giovanni Astuti ◽

Gianni Bedini ◽

Daniela Ciccarelli ◽

Lijuan Liu ◽

Manuel Tiburtini ◽

...

Keyword(s):

Chromosome Numbers ◽

Eastern Mediterranean ◽

The Other ◽

Mediterranean Species ◽

Italian Flora

In this contribution, new chromosome data obtained on material collected in Italy are presented. It includes counts from six populations of three taxa within the genus Pulmonaria, two of which are endemic to Italy (P. vallarsae subsp. apennina and P. vallarsae subsp. vallarsae); the other is the widespread European P. officinalis. In addition, two counts from Potentilla detommasii and Stachys thirkei, two eastern Mediterranean species, are also reported.

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Artificial whole genome duplication in paleopolyploid sturgeons yields highest documented chromosome number in vertebrates

Scientific Reports ◽

10.1038/s41598-020-76680-4 ◽

2020 ◽

Vol 10 (1) ◽

Author(s):

Ievgen Lebeda ◽

Petr Ráb ◽

Zuzana Majtánová ◽

Martin Flajšhans

Keyword(s):

Chromosome Numbers ◽

Whole Genome Duplication ◽

Genome Duplication ◽

Mitotic Division ◽

Chromosome Count ◽

Whole Genome ◽

Acipenser Baerii ◽

Ploidy Levels ◽

Duplication Events ◽

C Value

AbstractCritically endangered sturgeons, having undergone three whole genome duplication events, represent an exceptional example of ploidy plasticity in vertebrates. Three extant ploidy groups, combined with autopolyploidization, interspecific hybridization and the fertility of hybrids are important issues in sturgeon conservation and aquaculture. Here we demonstrate that the sturgeon genome can undergo numerous alterations of ploidy without severe physiological consequences, producing progeny with a range of ploidy levels and extremely high chromosome numbers. Artificial suppression of the first mitotic division alone, or in combination with suppression of the second meiotic division of functionally tetraploid zygotes (4n, C-value = 4.15) of Siberian sturgeon Acipenser baerii and Russian sturgeon A. gueldenstaedtii resulted in progeny of various ploidy levels—diploid/hexaploid (2n/6n) mosaics, hexaploid, octoploid juveniles (8n), and dodecaploid (12n) larvae. Counts between 477 to 520 chromosomes in octoploid juveniles of both sturgeons confirmed the modal chromosome numbers of parental species had been doubled. This exceeds the highest previously documented chromosome count among vertebrates 2n ~ 446 in the cyprinid fish Ptychobarbus dipogon.

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Characterization of Different Arundo donax L. Clones from the Mediterranean Region

Agronomy ◽

10.3390/agronomy11071347 ◽

2021 ◽

Vol 11 (7) ◽

pp. 1347

Author(s):

Elena Sánchez ◽

Gladys Lino ◽

Xavier Serrat ◽

Salvador Nogués

Keyword(s):

Biomass Production ◽

Chromosome Numbers ◽

Mediterranean Region ◽

Chromosome Count ◽

Arundo Donax ◽

Giant Reed ◽

High Biomass ◽

Biomass Characterization ◽

Arundo Donax L

The present study assessed the behavior of four clones of Arundo donax L. (giant reed) as a perennial rhizomatous grass of increasing interest due to its high biomass production and great adaptability to stress conditions. In this study, a molecular, physiological, and biomass characterization was performed in greenhouse conditions on four Mediterranean clones. The majority of physiological and biomass parameters were not significantly different between clones. However, it was possible to observe large differences in the chromosome count for the four clones. In this way, we detected different numbers of chromosomes for each clone (98 to 122), but surprisingly, no correlation was observed between their chromosome numbers and their physiological and biomass responses.

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