Ultrastructural study of pollen and anther development in Luehea divaricata (Malvaceae, Grewioideae) and its systematic implications: Role of tapetal transfer cells, orbicules and male germ unit

Lattar, Elsa Clorinda; Galati, Beatriz Gloria; Ferrucci, María Silvia

doi:10.1016/j.flora.2012.10.005

Cited by 12 publications

(12 citation statements)

References 20 publications

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“…Anther wall development in C. argutus, C. hirtus, H. popayanensis, L. candicans and T. semitriloba coincides with the Basic type (Davis 1966), which is shared with L. divaricata, Grewioideae (Lattar et al 2012); E. hsienmu, Dombeyoideae (Tang et al 2006), O. lagopus (Malvoideae), A. digitata and B. malabaricum, Bombacoideae (Rao 1954). However, Rao & Rao (1952) and Dnyansagar & Gaoli (1964-1965 indicated that anther wall development in some species of Corchorus and Triumfetta corresponds to the dicotyledonous type, as in other species of Malvaceae, such as A. pictum and M. malvifolium, Malvoideae (Galati unpublished) and C. insignis, Bombacoideae (Galati & Rosenfeldt 1998).…”

Section: Discussionmentioning

confidence: 83%

“…This condition of binucleate tapetal cells might be one of the ways in which total DNA content increases in tapetal tissue (Pandey 1997). By contrast, in L. candicans, the tapetum cells are multinucleate, a character shared with L. divaricata, Grewioideae (Lattar et al 2012). This character state was also observed in B. malabaricum (Rao 1954) and C. insignis (Galati & Rosenfeldt 1998), both species belonging to Bombacoideae.…”

Section: Discussionmentioning

confidence: 92%

“…In C. argutus, C. hirtus, H. popayanenis and T. semitriloba the fibrillar thickenings develop at the free microspore stage, as in E. hsienmu (Tang et al 2006). However, in L. candicans the fibrillar thickenings complete their development at the immature pollen stage; as well as in L. divaricata (Lattar et al 2012). The latter pattern was also observed in genera belonging to the subfamily Dombeyoideae (Tang et al 2006), whereas for the remaining species studied in other subfamilies of Malvaceae, the authors did not indicate the development time of these thickenings.…”

Section: Discussionmentioning

confidence: 99%

“…However, further studies confirmed their presence in species of Asteraceae (Gotelli et al 2008) and Malvaceae (Strittmatter et al 2000;Galati et al 2007) with plasmodial or invasive non-syncytial tapetum. Finally, the presence of orbicules in Malvaceae has been little explored, with records reported only for the subfamilies Bombacoideae, Tilioideae and Grewioideae (Chambers & Godwin 1961;Nilsson & Robyns 1974;Galati & Rosenfeldt 1998;Lattar et al 2012).…”

Section: Introductionmentioning

confidence: 99%

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Comparative study of anther development, microsporogenesis and microgametogenesis in species ofCorchorus,Heliocarpus,LueheaandTriumfettaMalvaceae: Grewioideae) from South America

Lattar

Galati

Ferrucci

2014

New Zealand Journal of Botany

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Anther development, microsporogenesis and microgametogenesis of six species of the genera Corchorus, Heliocarpus, Luehea and Triumfetta were analysed. The genera were found to share the following characters: ontogeny of anther wall of basic type; simultaneous microsporogenesis, resulting mainly in tetrahedral tetrads; secretory tapetum and pollen grains shed at the bicellular stage. Moreover, the characters that differentiate them are: presence of uninucleate tapetal cells in Heliocarpus and Triumfetta; binucleate cells in Corchorus and multinucleate cells in Luehea; differentiation of the thickenings of the endothecium at free microspores stage in Corchorus, Heliocarpus and Triumfetta, whereas in Luehea differentiation occurs at the mature pollen grains stage; late disintegration of sporogenous tissue cell walls in Luehea; and the presence of orbicules, absent only in Corchorus. This is the first embryological report of the Grewioideae subfamily, contributing to the characterization of the genera studied. The results are discussed in relation to the known data for the family.

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Section: Discussionmentioning

confidence: 83%

Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comparative study of anther development, microsporogenesis and microgametogenesis in species ofCorchorus,Heliocarpus,LueheaandTriumfettaMalvaceae: Grewioideae) from South America

Lattar

Galati

Ferrucci

2014

New Zealand Journal of Botany

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“…In most angiosperms, formation of viable pollen is achieved by a series of complex events that require cooperative interaction between gametophytic and sporophytic tissues in the anther (Mascarenhas, 1989; Goldberg et al, 1993). The earlier workers have made numerous studies on the development of pollen along with the localization of different histochemical substances on different plants by Rudramuniyappa and Panchaksharappa (1985), Yeung et al, (2011), Vardar and Unal (2011), Liu et al, (2011Liu et al, ( , 2012, Vardar et al, (2012), Ekici and Dane (2012), Aybeke (2012), Galati et al, (2012).…”

Section: Introductionmentioning

confidence: 99%

Histochemical studies on male gametophyte of Adansonia digitata Linn. - An endangered species of Karnataka, India.

Negalur

2016

Ann. Pl. Sci.

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The distribution of proteins in the developing anthers of Adansonia digitata Linn. was investigated. The results indicate that the possible importance of histochemical substances which are present in the tapetum and meiocytes and their derivatives in pollen formation has been correlated. The proteins and their metabolism seems to be essential for the development of fertile pollen. The anthers are tetrasporangiate. The development of anther wall follows the basic type, the epidermis, endothecium, 2-3 middle wall layers and tapetum. The tapetum is bilayered and glandular with multinucleate structure shows rich content of proteins at all stages of its development. At early meiotic of the anther development the meiocytes are rich in total proteins. The cytokinesis is of simultaneous type which results in the formation of tetrahedral tetrads. At subsequent stages of meiosis, the concentration of protein in the meiocytes reduces. The early microspores the quantity of proteins decline and subsequently at pollen grain stage, proteins gradually increase and persists in the mature pollen. The present work seems to be is first contribution to the knowledge of protein composition in the developing anther of Adansonia digitata Linn.

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The male germ unit association is independently regulated of GUM in Arabidopsis thaliana

Rauf,

Wang,

et al. 2024

Plant Direct

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Cytoplasmic projections (CPs) formed by the generative and sperm cells link the male gametes with the vegetative cell (VC) nucleus, which are required to build the male germ unit (MGU) assemblage in the angiosperm pollen grain. As molecular and genetic controls underlying CP development and formation of the MGU are unknown, it was hypothesized that physical association between germ cells and the VC nucleus might be lost in germ unit malformed (gum) mutants or in those which either block generative cell (GC) division or that additionally prevent gamete differentiation. In vivo, analysis of marked cellular components demonstrated a linkage of sperm cells (SCs) and the VC nucleus in gum mutant alleles despite their increased physical separation. Similarly, for several independent classes of bicellular pollen mutants, undivided GCs were associated with the VC nucleus like GCs in wild‐type pollen. We conclude that the early formation of GC CPs to establish the MGU is regulated independently of DUO1‐DAZ1 and DUO3 transcription factors as well as cyclin‐dependent kinase function (CDKA;1). As the absence of cytoplasmic protrusion was expected in the gum mutants in Arabidopsis, early histological studies reported temporal disappearance of cytoplasmic protrusion in several organisms. Our findings demonstrated the striking importance of live imaging to verify the broad conservation of the persistent MGU contact in all the angiosperms and its important role in successful double fertilization.

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Ultrastructural study of pollen and anther development in Luehea divaricata (Malvaceae, Grewioideae) and its systematic implications: Role of tapetal transfer cells, orbicules and male germ unit

Cited by 12 publications

References 20 publications

Comparative study of anther development, microsporogenesis and microgametogenesis in species ofCorchorus,Heliocarpus,LueheaandTriumfettaMalvaceae: Grewioideae) from South America

Comparative study of anther development, microsporogenesis and microgametogenesis in species ofCorchorus,Heliocarpus,LueheaandTriumfettaMalvaceae: Grewioideae) from South America

Histochemical studies on male gametophyte of Adansonia digitata Linn. - An endangered species of Karnataka, India.

The male germ unit association is independently regulated of GUM in Arabidopsis thaliana

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