Perforated Ray Cells in Saracha Quitensis (Solanaceae)

Lindorf, Helga

doi:10.1163/22941932-90001550

Cited by 4 publications

(4 citation statements)

References 4 publications

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“…1, 2, 7-11) (Table 1). The combined presence of simple and multiple perforation plates in PRCs in the wood of the same species has been reported more often (McLean & Richardson 1972;Nagai et al 1994;Otegui 1994;Eom & Chung 1996;Ceccantini & Angyalossy-Alfonso 2000) than the presence of exclusively simple perforation plates (Botosso & Gomes 1982;Lindorf 1999;Terrazas 2000;Agarwal et al 2002;Serdar et al 2004). When comparing the perforation plate type of the PRCs with those of the VEs (Table 1), we found both similar and different plates in roots and branches in the studied species.…”

supporting

confidence: 64%

Perforated Ray Cells in the Wood of Roots and Branches of Cerrado Species from Brazil

Sonsin¹,

Machado²,

Marcati³

2008

IAWA J

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Perforated ray cells (PRCs) are recorded here for the first time in the roots and branches of Schefflera vinosa, Caryocar brasiliense, Acosmium subelegans, Byrsonima basiloba, B. coccolobifolia, B. verbascifolia and Alibertia concolor which occur in Pratâniaʼs cerrado (SP, Brazil). PRCs are larger than normal ray cells, occurring isolated or in groups of two or more in the same ray, and are present predominantly in the uniseriate portion of multiseriate rays in all species studied. In the roots and branches, the types of perforation plates (PP) of the PRCs are similar to those of the vessel elements (VE) in most species, with the exception of the branches of Schefflera vinosa and the branches and roots of Caryocar brasiliense. The diameter of the PRC plates was greater in the roots than in the branches, but the differences were only statistically significant in Schefflera vinosa, Byrsonima basiloba and B. verbascifolia. In a general way the PRC plates were greater in diameter than the VE plates in both roots and branches of most species.

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supporting

confidence: 64%

Perforated Ray Cells in the Wood of Roots and Branches of Cerrado Species from Brazil

Sonsin¹,

Machado²,

Marcati³

2008

IAWA J

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“…The observations of these authors were later confirmed by numerous studies with species from different families (e.g., Serdar et al 2004;Joffily et al 2007). However, some exceptions have been reported for species that have homocellular to weakly heterocellular rays as in Miconia ternatifolia (Chalk & Chattaway 1933;Rao et al 1984;Lindorf 1999).…”

mentioning

confidence: 73%

Perforated Ray Cells in Miconia Ternatifolia: A First Report for the Family Melastomataceae

Marcon-Ferreira¹,

Barros²,

Costa³

2009

IAWA J

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“…The variation in armature may be taxonomically useful as spines are restricted to the Dunalia + Eriolarynx + Saracha + Vassobia clade (Smith and Baum, 2006). Anatomical variation has not been extensively explored in Iochrominae, aside from a study of ray cells in Saracha (Lindorf, 1999). In contrast, many biochemical studies focused on Iochroma and related genera (e.g., Lischewski et al, 1992;Alfonso et al, 1993) and have uncovered a wide variety of novel withanolides.…”

Section: Floral Trait Evolutionmentioning

confidence: 99%

Systematics of Iochrominae (Solanaceae): Patterns in Floral Diversity and Interspecific Crossability

Smith¹,

Baum²

2007

Acta Hortic.

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Iochrominae is a florally diverse clade of 34 Andean species and six traditionally recognized genera within Physaleae. Recent phylogenetic estimates suggest that four of the six traditional genera of Iochrominae are not monophyletic. Using this phylogenetic framework, we examine the evolution of floral morphology and interspecific crossability in Iochrominae. Iochrominae is inferred to have had ancestrally a purple corolla, but now manifests a wide range of colors (red/orange, yellow, green, purple or white), several of which appear to have arisen multiple times. Other floral traits traditionally employed in taxonomy, including corolla shape, corolla length, and stapet form, are similarly evolutionarily labile and homoplasious within Iochrominae. To explore the extent of post-pollination reproductive isolation in the group and assess the potential for hybridization in nature, we conducted greenhouse crosses among seven species of Iochrominae representing five traditional genera. Of 21 reciprocal pairwise crosses, only two failed to yield viable seed. While the crossability index (a measure of successful seed set and germination) varied among crosses, it correlated only loosely with degree of relatedness. These results suggest that the speciation and diversification of Iochrominae has not been accompanied by the formation of strong barriers to pollen receipt or early seed maturation. However, pre-mating factors, such as allopatry and ethological isolation, and post-germination factors, such as reduced hybrid fitness, might have together acted to maintain the morphological and evolutionary cohesiveness of Iochrominae species.

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Perforated Ray Cells in Saracha Quitensis (Solanaceae)

Cited by 4 publications

References 4 publications

Perforated Ray Cells in the Wood of Roots and Branches of Cerrado Species from Brazil

Perforated Ray Cells in the Wood of Roots and Branches of Cerrado Species from Brazil

Perforated Ray Cells in Miconia Ternatifolia: A First Report for the Family Melastomataceae

Systematics of Iochrominae (Solanaceae): Patterns in Floral Diversity and Interspecific Crossability

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