Pollen ontogeny linked to tapetal cell maturation in<i>Impatiens parviflora</i>(Balsaminaceae)

Vinckier, Stefan; Janssens, Steven; Huysmans, Suzy; Vandevenne, Anneleen; Smets, Erik

doi:10.1080/00173134.2011.650194

Cited by 10 publications

(6 citation statements)

References 53 publications

(50 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…only over the basal part of the thecae, the pollen is also partly released directly to the outside (e.g. I. parviflora ; Vinckier et al ., ; this study; Fig. A).…”

Section: Discussionmentioning

confidence: 99%

“…with only partly united anther flanks, no retracted anther walls have been observed (e.g. I. parviflora ; Vinckier et al ., ; this study).…”

Section: Discussionmentioning

confidence: 99%

“…The dehisced anthers of all taxa studied here are further characterized by the presence of distinct thread‐like structures along the stomium that entangle the pollen. These threads are found in all balsaminoid families (Balsaminaceae: Vogel & Cocucci, ; Hesse, Vogel & Halbritter, ; Vinckier et al ., ; Marcgraviaceae: Pinheiro et al ., ; Sazima, Buzato & Sazima, ; this study; Tetrameristaceae: this study). They are derived from the fragmented thecal septum and stomium tissue (Vogel & Cocucci, ; Hesse et al ., ; see also Schönenberger et al ., ).…”

Section: Discussionmentioning

confidence: 99%

“…They are derived from the fragmented thecal septum and stomium tissue (Vogel & Cocucci, 1988;Hesse et al, 2000; see also Schönenberger et al, 2010). The functional significance of these threads may be to help portion the pollen, distributing it over several pollinators by forming a 'pollen basket' that entangles the pollen grains and thereby avoids all or most of the pollen being removed at once (Vogel & Cocucci, 1988;Hesse et al, 2000, Vinckier et al, 2012. For Sc.…”

Section: Corollamentioning

confidence: 99%

See 3 more Smart Citations

Comparative floral structure and systematics in the balsaminoid clade including Balsaminaceae, Marcgraviaceae and Tetrameristaceae (Ericales)

Balthazar

Schönenberger

2013

Bot J Linn Soc

View full text Add to dashboard Cite

Based on molecular phylogenetic studies, Balsaminaceae, Tetrameristaceae (including Pellicieraceae) and Marcgraviaceae form the strongly supported first branching clade in the asterid order Ericales. Marcgraviaceae and Tetrameristaceae were proposed to be closely related in pre‐molecular studies, but the systematic position of Balsaminaceae has been controversial for some time and a relationship with the other two families was never suggested in pre‐molecular/pre‐cladistic times. However, interfamilial relationships in the clade are still unclear because of conflicting phylogenetic hypotheses from molecular analyses. In order to assess the validity of these molecular hypotheses from a morphological point of view, the floral morphology, anatomy and histology of Balsaminaceae, Tetrameristaceae and Marcgraviaceae are comparatively studied in detail. In addition, earlier literature is reviewed. The monophyly of the balsaminoid clade is strongly supported by floral structure, and a series of potential floral synapomorphies is identified for the clade. Prominent features shared by the three families include broad and dorsiventrally flattened filaments, thread‐like structures lining the stomia of dehisced anthers, secretory inner morphological surfaces of the gynoecium, ovules intermediate between uni‐ and bitegmic, incompletely tenuinucellar ovules, fruits with persistent style and stigma, seeds lacking endosperm and several anatomical/histological traits. The families are also distinctive because the bracts and/or sepals are petaloid and nectariferous. Further, the floral structure supports a sister group relationship between Balsaminaceae and Tetrameristaceae rather than any of the other possible interfamilial relationships. These two families share a caducous calyx, post‐genital fusion/coherence of filaments and ovary surface, latrorse anther dehiscence, commissural carpel lobes and ovules with a thickened funiculus and a constricted chalazal region. The occurrence of these features in Ericales is discussed. Future structural studies in other ericalean lineages and additional molecular studies are needed to further test these features with respect to their systematic value for the balsaminoid clade. Some may turn out to be true synapomorphies, whereas others may be recognized as plesiomorphies, as they may be more widely spread in Ericales than currently thought. © 2013 The Linnean Society of London, Botanical Journal of the Linnean Society, 2013, 173, 325–386.

show abstract

“…only over the basal part of the thecae, the pollen is also partly released directly to the outside (e.g. I. parviflora ; Vinckier et al ., ; this study; Fig. A).…”

Section: Discussionmentioning

confidence: 99%

“…with only partly united anther flanks, no retracted anther walls have been observed (e.g. I. parviflora ; Vinckier et al ., ; this study).…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Corollamentioning

confidence: 99%

See 2 more Smart Citations

Comparative floral structure and systematics in the balsaminoid clade including Balsaminaceae, Marcgraviaceae and Tetrameristaceae (Ericales)

Balthazar

Schönenberger

2013

Bot J Linn Soc

View full text Add to dashboard Cite

show abstract

“…Since comprehensive pollen morphological study on angiosperms, including Impatiens pollen, several palynological studies have been carried out that focused on the pollen morphology of Impatiens (Narayana & Sayeeduddin, 1959;Huynh, 1966Huynh, , 1968Bhaskar & Razi 1973, 1979Tara & Namboodri, 1974;Bhaskar & al., 1975;Moore & Webb, 1978;Grey-Wilson, 1980b;Lu, 1991;Perveen & Qaiser, 2001;Janssens & al., 2005Janssens & al., , 2009aJanssens & al., , 2011Vinckier & al., 2012). Despite these studies, the pollen morphology of Impatiens is still underexamined due to the large size of the genus.…”

Section: Introductionmentioning

confidence: 99%

A total evidence approach using palynological characters to infer the complex evolutionary history of the Asian Impatiens (Balsaminaceae)

Janssens¹,

Wilson

Yuan

et al. 2012

TAXON

Self Cite

View full text Add to dashboard Cite

The present study contributes to a better understanding of major palynological trends in Impatiens, one of the largest genera in angiosperms, and evaluates the phylogenetic usefulness of pollen morphological characters in the genus. The pollen morphological diversity of 115 Asian species of the genus was investigated using light microscopy and scanning electron microscopy and analyzed in a phylogenetic framework using Bayesian inference and Bayesian posterior character mapping as well as parsimony character optimization. Despite the rather young age of Impatiens and its extremely rapid radiation, a striking palynological variability could be observed. The ancestral pollen type in Impatiens is a triangular, tri–aperturate pollen grain with reticulate sexine ornamentation, which subsequently evolved into the main Impatiens pollen type: a 4–aperturate, rectangular pollen grain with a reticulate sexine ornamentation. The most recently diversified Asian clades are characterized by several reversions from 4–aperturate to 3–aperturate and changes in sexine ornamentation from reticulate to microreticulate sexine ornamentation. Also differences in pollen view can be observed amongst the most recently diversified Asian lineages ranging from circular, quadrangular, elliptic to sub–elliptic and rectangular. Although some pollen morphological characters seem to be homoplasious, others help to improve the resolution of some phylogenetically problematic lineages in the genus.

show abstract

Review on tapetal ultrastructure in angiosperms

Gotelli

Lattar

Zini

et al. 2023

Planta

View full text Add to dashboard Cite

Pollen ontogeny linked to tapetal cell maturation inImpatiens parviflora(Balsaminaceae)

Cited by 10 publications

References 53 publications

Comparative floral structure and systematics in the balsaminoid clade including Balsaminaceae, Marcgraviaceae and Tetrameristaceae (Ericales)

Comparative floral structure and systematics in the balsaminoid clade including Balsaminaceae, Marcgraviaceae and Tetrameristaceae (Ericales)

A total evidence approach using palynological characters to infer the complex evolutionary history of the Asian Impatiens (Balsaminaceae)

Review on tapetal ultrastructure in angiosperms

Contact Info

Product

Resources

About