Chromosome studies in the tribe Clauseneae and the cytological homogeneity in the orange subfamily (Aurantioideae, Rutaceae)

Mou, Feng-Juan; Zhang, Dianxiang

doi:10.1111/j.1759-6831.2012.00193.x

Cited by 7 publications

(4 citation statements)

References 21 publications

(51 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, Chase et al (1999) found Citroideae (namely Aurantioideae) to be monophyletic only with the exception of Luvunga (Chase et al 1999). The basic chromosome number is invariant (x = 9) in this subfamily, and this character constitute a synapomorphy (Mou and Zhang 2012). Dysploid reduction has occurred in Aurantioideae, from x = 18 observed in other subfamilies (Stace et al 1993).…”

Section: Aurantioideaementioning

confidence: 95%

Phylogenetic relationship of Clauseneae (Rutaceae) inferred from plastid and nuclear DNA data and taxonomic implication for some major taxa

Mou

Chen

et al. 2018

Nordic Journal of Botany

Self Cite

View full text Add to dashboard Cite

Using sequences of the nuclear ribosomal ITS region as well as the chloroplast DNA trnL‐trnF and atpB‐rbcL regions, this study aims to provide further insight into the phylogenetic relationships within Clauseneae and its relationship to Citreae (Rutaceae). Using maximum likelihood (ML) and Bayesian inference (BI), we reconstructed the phylogeny of Clauseneae based on trnL‐F, atpB‐rbcL and ITS sequences. Our data matrix contained 91 accessions, representing 72 species and varieties from 31 genera and two outgroups, including new and extensive sampling of species and varieties representing four genera in the tribe Clauseneae. In the subfamily Aurantioideae, six major clades were resolved with strong support: 1) Micromelum clade: Micromelum; 2) Glycosmis clade: Glycosmis; 3) Bergera clade: Murraya sect. Bergera; 4) Clausena clade: Clausena; 5) Murraya clade: Murraya sect. Murraya + Merrillia; 6) Citreae clade: Citreae. Micromelum, Glycosmis, Clausena and Merrillia were confirmed as monophyletic. In contrast, Murraya s.l. was reconstructed as polyphyletic. Murraya sect. Bergera clustered with Clausena while Murraya sect. Murraya and Merrillia together formed a clade that is sister to the tribe Citreae. All members from Citreae were clustered into a natural group. The genus Micromelum was found to be primitive in this subfamily and more close to Glycosmis. Based on the phylogeny and morphological characters, we discuss the taxonomy of some members of Clauseneae and conclude that the current tribal and generic classification need further revision.

show abstract

Section: Aurantioideaementioning

confidence: 95%

Phylogenetic relationship of Clauseneae (Rutaceae) inferred from plastid and nuclear DNA data and taxonomic implication for some major taxa

Mou

Chen

et al. 2018

Nordic Journal of Botany

Self Cite

View full text Add to dashboard Cite

show abstract

“…It became clear at the beginning of the last century that Citrus and related genera shared the stable chromosome number n = 9, except for a few polyploids (Guerra et al 2000;Mou & Zhang 2012). Smith-White (1954) analyzed 69 Australian Rutaceae species and concluded that the base number of the family was x = 9, although polyploids with n = 18, or multiples of 18, were widespread in the family.…”

Section: Introductionmentioning

confidence: 99%

Molecular cytogenetics of Dictyoloma vandellianum A. Juss. and the ancestral karyotype of Rutaceae

et al. 2021

View full text Add to dashboard Cite

Determination of the chromosome base number of a taxon is fundamental to understanding karyotypic variation and its implications for the evolution of that group. This usually requires careful evaluation of cytological literature and robust phylogenetic support. The base number for the family Rutaceae (x = 9 or x = 18) has long been the subject of debate. Here, we analyzed the banding pattern, rDNA sites, and genome size of Dictyoloma vandellianum, subfamily Cneoroideae, the sister group of the remaining Rutaceae, and revised critical points about the chromosome base number of the family. We found that this species has n = 9, which differs from the n = 18 possessed by other cytologically known Cneoroideae species. Thus, n = 9 occurs in the main clades of Rutaceae and is the most probable base number of the family. The hypothesis of x = 18 as the base number is no longer sustainable, although n = 18 is very common in Rutaceae. Moreover, the fluorescent banding pattern and the relatively large genome size (1C = 1.3 pg) of D. vandellianum suggest that its chromosomal organization is highly divergent from Aurantieae, the only large Rutaceae clade where species with n = 9 are greatly dominant.

show abstract

“…Aurantioideae also includes genera with two whorls of stamens, such as Clausena and Murraya . According to current molecular systematics, these genera represent the ancestral clade in Aurantioideae [ 38 ]. Therefore, determining the mode of androecium development in these genera is important for understanding the relationship between Ruteae and Aurantioideae.…”

Section: Introductionmentioning

confidence: 99%

Phylogenetic Relationships and Evolution of the Androecia in Ruteae (Rutaceae)

et al. 2015

View full text Add to dashboard Cite

Ruta, which belongs to tribe Ruteae, is the type genus of the subfamily Rutoideae and the family Rutaceae. Molecular systematic studies have shown that the genera in Ruteae are closer related to Aurantioideae than to most other genera of Rutoideae, some of the genera traditionally placed in Ruteae have been shown to be nested within the Aurantioideae clade, but the diagnostic characters for determining new patterns in the relationship are poor. In this study, we investigated the floral development of Boenninghausenia in Ruteae (sensu stricto), Haplophyllum in the basal position of Aurantioideae and Murraya in traditional Aurantioideae using scanning electron microscopy. The androecium of Boenninghausenia is obdiplostemony. As androecia in other genera within Ruteae (s.s.) are also obdiplostemonous, reconstruction of the ancestral state indicates that obdiplostemony is an ancestral character in this clade. Because the androecia of Haplophyllum and Murraya are also obdiplostemonous, obdiplostemony is also an ancestral character in Aurantioideae clade. The ancestral state reconstruction indicates this character can serve as a synapomorphy of the Ruteae-Aurantioideae clade. The results of our work also shed light on the evolution of the androecium in Rutaceae, as the obdiplostemony of this group is clearly derived from haplostemony in the ancestral genera in Rutaceae and has develop into polyandry by increasing antepetalous stamens.

show abstract

Chromosome studies in the tribe Clauseneae and the cytological homogeneity in the orange subfamily (Aurantioideae, Rutaceae)

Cited by 7 publications

References 21 publications

Phylogenetic relationship of Clauseneae (Rutaceae) inferred from plastid and nuclear DNA data and taxonomic implication for some major taxa

Phylogenetic relationship of Clauseneae (Rutaceae) inferred from plastid and nuclear DNA data and taxonomic implication for some major taxa

Molecular cytogenetics of Dictyoloma vandellianum A. Juss. and the ancestral karyotype of Rutaceae

Phylogenetic Relationships and Evolution of the Androecia in Ruteae (Rutaceae)

Contact Info

Product

Resources

About