Ontogeny of fusoid cells in Guadua species (Poaceae, Bambusoideae, Bambuseae): evidence for transdifferentiation and possible functions

Vega, Andrea S.; Castro, María Águeda; Guerreiro, Carolina

doi:10.1016/j.flora.2016.03.007

Cited by 13 publications

(17 citation statements)

References 21 publications

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“…In contrast, a putative fusoid cell is clearly distinguishable from any other mesophyll cell even at the earliest stages and throughout development until its complete differentiation. The most recent work on the development of fusoid cells (in two species of Guadua) reported evidence of transdifferentiation of chlorenchyma cells into fusoid cells (Vega et al, 2016); however, the developmental work herein performed shows no evidence of transdifferentiation for the 13 species we sampled across the grass family. Vega et al (2016) also described a conspicuous cell wall invagination during the differentiation of chlorenchyma cells into fusoid cells, which likewise was not herein observed.…”

Section: Fusoid Cell Origin and Developmentcontrasting

confidence: 62%

“…perpendicular to the proximo-distal axis in the lateral plane), with the caveat that sometimes fusoid cells do not collapse. A similar interpretation was given by Vega et al (2016), referring to these apparent 'cells' as intercellular gas spaces delimited by successive collapsed fusoid cells. We consider 'cavity' to be the appropriate term because many Poaceae species have intercellular gas spaces in the mesophyll (not necessarily only as seen in cross-section and not in this configuration; e.g.…”

Section: Fusoid Cell Origin and Developmentmentioning

confidence: 55%

“…Since the cell wall invagination reported in that work is also evidenced in bundle sheath cells (see Fig. 1B, C in Vega et al, 2016), which do not have any lobes at maturity, it is very likely that the observed invaginations are a technical artefact caused by fixative methods. Of note, we had similar results in materials pre-fixed for <48 h.…”

Section: Fusoid Cell Origin and Developmentmentioning

confidence: 65%

“…Rather, March and Clark (2011) proposed that cavities formed by the collapse of fusoid cells may be related to intra-or intercellular reflectance, which contributes to the absorption and intrafoliar redistribution of light in shaded environments. Vega et al (2016) proposed that the I-shaped collapsed fusoid cells as seen in longitudinal section may play a structural role, supporting the mature leaf-blade architecture. Vieira et al (2002) and Wang et al (2016), in turn, suggested the relationship of fusoid cells to storage, transportation and water balance functions.…”

Section: Introductionmentioning

confidence: 94%

“…Poaceae Fusoid cells for early-diverging lineages and Bambusoideae, and fusoid-like cells for Panicoideae Vega et al (2016) Guadua species Intercellular gas spaces (with regard to fusoid cell collapse and the space left between adjacent fusoid cells) Wang et al (2016) Bambusoideae Fusoid cells of fusoid cells in two species of Guadua (Bambusoideae) show that these cells differentiate, enlarge and then usually collapse to form intercellular gas spaces as seen in cross-section (Vega et al, 2016; Table 1). These three developmental studies, although addressing aspects of fusoid cell ontogeny, do not completely clarify the origin of these cells or their occurrence or homology across the grass family.…”

Section: Introductionmentioning

confidence: 99%

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Fusoid cells in the grass family Poaceae (Poales): a developmental study reveals homologies and suggests new insights into their functional role in young leaves

et al. 2018

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Background and Aims In mature grass leaf blades as seen in cross-section, oblong cell-like structures have been interpreted most recently as intercellular gas spaces delimited by successive collapsed fusoid cells. These cells have been reported in at least seven of 12 subfamilies of Poaceae and are considered a synapomorphy for the family; however, no developmental work has been performed to verify their meristematic origin or to assess possible homologies within the graminid clade (= Flagellariaceae + [(Joinvilleaceae + Ecdeiocoleaceae) + Poaceae]) or among subfamilies of Poaceae. A developmental study was therefore carried out, including 20 species in three families (Flagellariaceae, Joinvilleaceae and Poaceae), representing the earlier-diverging and derived branches within the graminid clade and Poaceae. • Methods Light microscopy was combined with scanning electron microscopy, cryoscanning electron microscopy and transmission electron microscopy to study the development of leaves taken from the shoot apex of young plants. Mature leaf blades also were taken from living or dried plants and the mid-portion was studied. • Key Results Developmental results show that, in mature leaf blades as seen in cross-section, one apparent fusoid cell is typically a cavity resulting from the collapse of the initial fusoid cell and its internal divisions, which are herein interpreted as derivative cells with formation of cell plates only. Each cavity is delimited by successive collapsed fusoid cells arranged perpendicularly to the veins. Fusoid cells in all studied Poaceae members originate from the ground meristem, as do the colourless cells in Joinvillea ascendens (Joinvilleaceae). These two types of mesophyll cell have a strongly similar ontogeny, distinguished mainly by the collapse of the fusoid cells in Poaceae, which is not observed in the colourless cells in J. ascendens. • Conclusions Within the Poaceae, the meristematic origin of fusoid cells is the same in the early-diverging lineages, BOP clade and Panicoideae, and thus they are homologous within the family. The same topography and meristematic origin suggest that fusoid cells in Poaceae and colourless cells in Joinvilleaceae are homologous. The results also suggest that the role played by the fusoid cells in young grass leaves is related to synthesis and storage of starch granules at early stages of development.

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Section: Fusoid Cell Origin and Developmentcontrasting

confidence: 62%

Section: Fusoid Cell Origin and Developmentmentioning

confidence: 55%

Section: Fusoid Cell Origin and Developmentmentioning

confidence: 65%

Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

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Fusoid cells in the grass family Poaceae (Poales): a developmental study reveals homologies and suggests new insights into their functional role in young leaves

et al. 2018

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The contribution of foliar micromorphology and anatomy to the circumscription of species within the Chusquea ramosissima informal group (Poaceae, Bambusoideae, Bambuseae)

2017

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Chusquea is a diverse but monophyletic genus of Neotropical woody bamboos from primarily montane forests that comprises four well-supported lineages: subg. Magnifoliae, subg. Platonia, subg. Rettbergia, and the Euchusquea clade (comprising subg. Swallenochloa and subg. Chusquea). However, the relationships among clades or taxa within the Euchusquea clade inferred from molecular data are mostly not congruent with those inferred from morphological evidence, consequently limiting our ability to understand species relationships. In this study we generated foliar micromorphological and anatomical data for the Chusquea ramosissima informal group (Chusquea ramosissima, C. tenella, and C. tenuiglumis), and for the putative new species from Bolivia in this group, in order to test the value of these types of data for defining species and to seek potential synapomorphies for this group. Our results demonstrate that epidermal features, mainly with regard to the stomatal apparatus, proved to be more valuable in distinguishing species than anatomical characters. The presence of horizontally elongated silica cells over the veins and adaxial arm cells with invaginations from the abaxial side was shared by all the studied species but is not unique to this group. The type of trichomes, shape of silica bodies, type of arm cells, and midrib structure may be useful to lesser degree. All four species exhibited intraspecific variation in development of the papillae on the long cells. Support for the recognition of the new species from Bolivia is provided by micromorphological characters. An identification key based on leaf blade features is provided for the four studied species.

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Phenotypic plasticity and genetic variation in leaf traits of Yushania niitakayamensis (Bambusoideae; Poaceae) in contrasting light environments

Kao

2021

J Plant Res

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Ontogeny of fusoid cells in Guadua species (Poaceae, Bambusoideae, Bambuseae): evidence for transdifferentiation and possible functions

Cited by 13 publications

References 21 publications

Fusoid cells in the grass family Poaceae (Poales): a developmental study reveals homologies and suggests new insights into their functional role in young leaves

Fusoid cells in the grass family Poaceae (Poales): a developmental study reveals homologies and suggests new insights into their functional role in young leaves

The contribution of foliar micromorphology and anatomy to the circumscription of species within the Chusquea ramosissima informal group (Poaceae, Bambusoideae, Bambuseae)

Phenotypic plasticity and genetic variation in leaf traits of Yushania niitakayamensis (Bambusoideae; Poaceae) in contrasting light environments

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