Skip to main content

11 Result(s)

within Betty E. Lemmon Remove this filter

and

  1. No Access

    Article

    Sporogenesis in Bryophytes: Patterns and Diversity in Meiosis

    Meiosis in bryophytes retains unusual features that provide clues to the innovation of sporogenesis in early land plants. Sporocytes are typically quadrilobed before nuclear division and the meiotic spindle is...

    Roy C. Brown, Betty E. Lemmon in The Botanical Review (2013)

  2. No Access

    Article

    Diversity in meiotic spindle origin and determination of cytokinetic planes in sporogenesis of complex thalloid liverworts (Marchantiopsida)

    As the earliest divergent land plants, bryophytes (mosses, hornworts, and liverworts) provide insight into the evolution of the unique plant process of sporogenesis by which meiosis results in heavy walled spo...

    Roy C. Brown, Betty E. Lemmon, Masaki Shimamura in Journal of Plant Research (2010)

  3. No Access

    Article

    Pre-meiotic bands and novel meiotic spindle ontogeny in quadrilobed sporocytes of leafy liverworts (Jungermannidae, Bryophyta)

    Indirect immunofluorescence and confocal microscopy were used to study the nucleation and organization of microtubules during meiosis in two species of leafy liverworts, Cephalozia macrostachya and Telaranea long...

    Roy C. Brown, Betty E. Lemmon in Protoplasma (2009)

  4. No Access

    Article

    Phragmoplasts in the Absence of Nuclear Division

    Roy C. Brown, Betty E. Lemmon in Journal of Plant Growth Regulation (2001)

  5. No Access

    Article

    Development of endosperm in Arabidopsis thaliana

     The process of endosperm development in Arabidopsis was studied using immunohistochemistry of tubulin/microtubules coupled with light and confocal laser scanning microscopy. Arabidopsis undergoes the nuclear typ...

    R. C. Brown, Betty E. Lemmon, Hong Nguyen, Odd-Arne Olsen in Sexual Plant Reproduction (1999)

  6. No Access

    Article

    Cell wall (1 → 3)- and (1 → 3, 1 → 4)-β-glucans during early grain development in rice (Oryza sativa L.)

    Immunogold labeling was used to study the distribution of (1 → 3)-β-glucans and (1 → 3, 1 → 4)-β-glucans in the rice grain during cellularization of the endosperm. At approximately 3–5 d after pollination the...

    Roy C. Brown, Betty E. Lemmon, Bruce A. Stone, Odd-Arne Olsen in Planta (1997)

  7. No Access

    Article

    The quadripolar microtubule system in lower land plants

    The quadripolar microtubule system (QMS) is a complex array that is associated with predivision establishment of quadripolarity in sporocytes of lower plants (bryophytes and lycopsids). The QMS unerringly pred...

    Roy C. Brown, Betty E. Lemmon in Journal of Plant Research (1997)

  8. No Access

    Article

    Development of the endosperm in rice (Oryza sativa L.): Cellularization

    The syncytial endosperm of rice undergoes cellularization according to a regular morphogenetic plan. At 3 days after pollination (dap) mitosis in the peripheral synctium ceases. Radial systems of microtubules ...

    Roy C. Brown, Betty E. Lemmon, Odd-Arne Olsen in Journal of Plant Research (1996)

  9. No Access

    Article

    Nuclear cytoplasmic domains, microtubules and organelles in microsporocytes of the slipper orchid Cypripedium californicum A. Gray dividing by simultaneous cytokinesis

    Microsporocytes of the slipper orchidCypripedium californicum A. Gray divide simultaneously after second meiosis. The organization and apportionment of the cytoplasm throughout meiosis are functions of nuclear-ba...

    Roy C. Brown, Betty E. Lemmon, R. C. Brown, B. E. Lemmon in Sexual Plant Reproduction (1996)

  10. No Access

    Article

    Pollen mitosis in the slipper orchid Cypripedium fasciculatum

    Pollen mitosis in the slipper orchid Cypripedium fasciculatum was studied using correlated methods of immunofluorescence and transmission electron microscopy. Unlike the more highly evolved orchids, the cypripedi...

    Roy C. Brown, Betty E. Lemmon in Sexual Plant Reproduction (1994)

  11. No Access

    Article

    Organisation of microtubules and actin filaments in the cortex of differentiating Selaginella guard cells

    Using fluorescent probes and confocal laser scanning microscopy we have examined the organisation of the microtubule and actin components of the cytoskeleton in kidney-shaped guard cells of six species of Sela...

    Ann L. Cleary, R. C. Brown, Betty E. Lemmon in Protoplasma (1993)