Chromosome Variation in Araceae: I: Pothoeae to Stylochitoneae

Marchant, C. J.

doi:10.2307/4103054

Cited by 16 publications

(34 citation statements)

References 4 publications

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“…Different authors have reported different Monstera deliciosa chromosome numbers (Petersen 1989). Our counts for Monstera deliciosa ’Variegata’ (2n=60) agree with the counts of Marchant (1970) and Cusimano et al (2012). The varying chromosome numbers within genera might be explained by aneuploid derivations such as chromosome losses or gains after meiotic irregularities leading to the formation of aneuploid gametes (Petersen 1989; Sousa et al 2014).…”

Section: Discussionsupporting

confidence: 79%

Karyotype analysis and visualization of 45S rRNA genes using fluorescence in situ hybridization in aroids (Araceae)

Lakshmanan¹,

Laere²,

Eeckhaut³

et al. 2015

CCG

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Karyotype analysis and FISH mapping using 45S rDNA sequences on 6 economically important plant species Anthurium andraeanum Linden ex André, 1877, Monstera deliciosa Liebmann, 1849, Philodendron scandens Koch & Sello, 1853, Spathiphyllum wallisii Regel, 1877, Syngonium auritum (Linnaeus, 1759) Schott, 1829 and Zantedeschia elliottiana (Knight, 1890) Engler, 1915 within the monocotyledonous family Araceae (aroids) were performed. Chromosome numbers varied between 2n=2x=24 and 2n=2x=60 and the chromosome length varied between 15.77 µm and 1.87 µm. No correlation between chromosome numbers and genome sizes was observed for the studied genera. The chromosome formulas contained only metacentric and submetacentric chromosomes, except for Philodendron scandens in which also telocentric and subtelocentric chromosomes were observed. The highest degree of compaction was calculated for Spathiphyllum wallisii (66.49Mbp/µm). B-chromosome-like structures were observed in Anthurium andraeanum. Their measured size was 1.87 times smaller than the length of the shortest chromosome. After FISH experiments, two 45S rDNA sites were observed in 5 genera. Only in Zantedeschia elliottiana, 4 sites were seen. Our results showed clear cytogenetic differences among genera within Araceae, and are the first molecular cytogenetics report for these genera. These chromosome data and molecular cytogenetic information are useful in aroid breeding programmes, systematics and evolutionary studies.

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Section: Discussionsupporting

confidence: 79%

Karyotype analysis and visualization of 45S rRNA genes using fluorescence in situ hybridization in aroids (Araceae)

Lakshmanan¹,

Laere²,

Eeckhaut³

et al. 2015

CCG

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“…Size and constitution of the chromosomes of Pothoidium are also very similar to those of Pothos scandens L. (Marchant 1970).…”

Section: Subfamily Pothoideaementioning

confidence: 64%

Cytology and systematica of Araceae

Petersen¹

1989

Nordic Journal of Botany

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The chromosome numbers of 75 species belonging to the family Araceae have been determined. The numbers for 53 species are reported for the first time. One number differs from previous reports (Aglaodorum), and one number is corrected (Phymatarum). Within 15 genera (Gymnostachys, Pothoidium, Alloschemone, Heteropsis, Holochlamys, Anaphyllopsis, Dracontioides, Pseudohydrosme, Montrichardia, Bucephalandra, Taccarum, Asterostigma, Gorgonidium, Spathantheum and Ulearum) the chromosome numbers have not previously been determined. The total number of genera cytologically investigated is now 99 (c. 94%). A great diversity in chromosome numbers as well as in chromosome size and constitution is found. The results are discussed in relation to the phylogeny and the previously published classifications of the family. A total list of chromosome numbers counted (>700 species) in the Araceae is presented (Appendix).

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“…As in monocots as a whole ( Figure 3(b)), the distribution of genome sizes in this order is skewed towards the smaller sizes ( Figure 4(b)), with only two families (Alismataceae and Araceae) possessing genomes larger than 5 pg. Polyploidy has played a role in generating these larger genomes but the predominant mechanism has been through increases in chromosome size, with some of the largest chromosomes so far reported being found in species with relatively low chromosome numbers in Alismataceae, Hydrocharitaceae, and Araceae [73][74][75][76][77]. Indeed, the species with the highest chromosome number and a genome size estimate is Lemna minor (Araceae) with 2n = 126 and yet its 1C-value is just 1.5 pg [78].…”

Section: Alismatalesmentioning

confidence: 99%

“…Genome size data are available for 106 species in 12 of the 13 families within this order [4] and range from 1C = 0.3 pg in two species of Araceae (Spirodela polyrrhiza with 2n = 80 and Pistia stratiotes with 2n = 28) to 1C = 24.1 pg in Zamioculcas zamiifolia (although no chromosome count was reported, previous ones have all been 2n = 34) [73]. As in monocots as a whole ( Figure 3(b)), the distribution of genome sizes in this order is skewed towards the smaller sizes ( Figure 4(b)), with only two families (Alismataceae and Araceae) possessing genomes larger than 5 pg.…”

Section: Alismatalesmentioning

confidence: 99%

Genome Size Dynamics and Evolution in Monocots

et al. 2010

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Monocot genomic diversity includes striking variation at many levels. This paper compares various genomic characters (e.g., range of chromosome numbers and ploidy levels, occurrence of endopolyploidy, GC content, chromosome packaging and organization, genome size) between monocots and the remaining angiosperms to discern just how distinctive monocot genomes are. One of the most notable features of monocots is their wide range and diversity of genome sizes, including the species with the largest genome so far reported in plants. This genomic character is analysed in greater detail, within a phylogenetic context. By surveying available genome size and chromosome data it is apparent that different monocot orders follow distinctive modes of genome size and chromosome evolution. Further insights into genome size-evolution and dynamics were obtained using statistical modelling approaches to reconstruct the ancestral genome size at key nodes across the monocot phylogenetic tree. Such approaches reveal that while the ancestral genome size of all monocots was small (1C = 1.9 pg), there have been several major increases and decreases during monocot evolution. In addition, notable increases in the rates of genome size-evolution were found in Asparagales and Poales compared with other monocot lineages.

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Chromosome Variation in Araceae: I: Pothoeae to Stylochitoneae

Cited by 16 publications

References 4 publications

Karyotype analysis and visualization of 45S rRNA genes using fluorescence in situ hybridization in aroids (Araceae)

Karyotype analysis and visualization of 45S rRNA genes using fluorescence in situ hybridization in aroids (Araceae)

Cytology and systematica of Araceae

Genome Size Dynamics and Evolution in Monocots

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