The Experts below are selected from a list of 90 Experts worldwide ranked by ideXlab platform
Wenmei Bao - One of the best experts on this subject based on the ideXlab platform.
-
preprophase band loses its function as a cytokinetic apparatus in mitosis of neck canal mother cell
Protoplasma, 2002Co-Authors: Ruilin You, Wenmei BaoAbstract:Preprophase bands in the neck canal mother cell and the central cell of the Archegonium of the fern Dryopteris crassirhizoma are observed with immunofluorescence microscopy. No phragmoplast is found during mitosis of the neck canal mother cell; however, the phragmoplast develops very well in the central cell. The neck canal mother cell undergoes karyokinesis but not cytokinesis and finally produces only one binucleate neck canal cell. However, the central cell undergoes cytokinesis and produces an egg cell and a ventral canal cell. These observations suggest that the preprophase band in the neck canal mother cell loses its function as a cytokinetic apparatus and becomes an evolutionary vestige in the development of the Archegonium.
Wm Bao - One of the best experts on this subject based on the ideXlab platform.
-
Preprophase band loses its function as a cytokinetic apparatus in mitosis of neck canal mother cell
protoplasma, 2002Co-Authors: He Q, Rl You, Wm BaoAbstract:Preprophase bands in the neck canal mother cell and the central cell of the Archegonium of the fern Dryopteris crassirhizoma are observed with immunofluorescence microscopy. No phragmoplast is found during mitosis of the neck canal mother cell; however, the phragmoplast develops very well in the central cell. The neck canal mother cell undergoes karyokinesis but not cytokinesis and finally produces only one binucleate neck canal cell. However , the central cell undergoes cytokinesis and produces an egg cell and a ventral canal cell. These observations suggest that the preprophase band in the neck canal mother cell loses its function as a cytokinetic apparatus and becomes an evolutionary vestige in the development of the Archegonium.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000179192900011&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Plant SciencesCell BiologySCI(E)PubMed2ARTICLE1-2105-10922
Von Konrat Matt - One of the best experts on this subject based on the ideXlab platform.
-
Figure 23 from: Renner M, Devos N, Patino J, Brown E, Orme A, Elgy M, Wilson T, Gray L, von Konrat M (2013) Integrative taxonomy resolves the cryptic and pseudo-cryptic Radula buccinifera complex (Porellales, Jungermanniopsida), including two reinstated and five new species. PhytoKeys 27: 1-113. https://doi.org/10.3897/phytokeys.27.5523
2013Co-Authors: Renner Matt, Devos Nicolas, Patino Jairo, Brown Elizabeth, Orme Andrew, Elgy Michael, Wilson Trevor, Gray Lindsey, Von Konrat MattAbstract:Figure 23 - Radula notabilis line drawings 2. A Ventral view of male shoot B Cellular detail of stem perigynium wall C Cellular detail of junction between stem perigynium, perianth wall, (at right) and calyptral perigynium (at left) D Longitudinal section of perianth E Cellular detail of perianth mouth F Archegonium G Female bracts in situ H Female bracts flattened I Perianth bearing shoot J Transverse section of stem from primary shoot. Scale bars: A, I: 600 µm. B, C, F: 60 µm. E, J: 40 µm. D, G, H: 240 µm. All from NSW909500
-
Figure 17 from: Renner M, Devos N, Patino J, Brown E, Orme A, Elgy M, Wilson T, Gray L, von Konrat M (2013) Integrative taxonomy resolves the cryptic and pseudo-cryptic Radula buccinifera complex (Porellales, Jungermanniopsida), including two reinstated and five new species. PhytoKeys 27: 1-113. https://doi.org/10.3897/phytokeys.27.5523
2013Co-Authors: Renner Matt, Devos Nicolas, Patino Jairo, Brown Elizabeth, Orme Andrew, Elgy Michael, Wilson Trevor, Gray Lindsey, Von Konrat MattAbstract:Figure 17 - Radula imposita Line drawings. A Cellular detail of leaf lobe margin B Cellular detail of medial leaf-lobe cells C Ventral view of shoot D Transverse section of stem from primary shoot E Cellular detail of lobule apex F Cellular detail of lobule interior base G Dorsal view of shoot H Five lobules from secondary shoots I Five lobules from primary shoots J Ventral view of stem surface K Dorsal view of stem surface, showing leaf-lobe insertion attaining the dorsal stem mid-line L Female bracts M Archegonium. Scale bars: A–B, D–F: 40 µm. C, G: 600 µm.: H, I, L: 240 µm. J–K, M: 60 µm. All from NSW896812
-
Figure 15 from: Renner M, Devos N, Patino J, Brown E, Orme A, Elgy M, Wilson T, Gray L, von Konrat M (2013) Integrative taxonomy resolves the cryptic and pseudo-cryptic Radula buccinifera complex (Porellales, Jungermanniopsida), including two reinstated and five new species. PhytoKeys 27: 1-113. https://doi.org/10.3897/phytokeys.27.5523
2013Co-Authors: Renner Matt, Devos Nicolas, Patino Jairo, Brown Elizabeth, Orme Andrew, Elgy Michael, Wilson Trevor, Gray Lindsey, Von Konrat MattAbstract:Figure 15 - Radula demissa Line drawings 2. A Perianth bearing shoot sector in ventral view B Detail of leaf-lobe marginal cells C Detail of leaf-lobe medial cells D Archegonium E Cellular detail of junction between stem perigynium, perianth wall, (at right) and calyptral perigynium (at left) F Longitudinal section of perianth G Cellular detail of stem perigynium wall H Cellular detail of perianth mouth I Transverse section of stem from primary shoot J One pair of female bracts K Dorsal stem surface showing three possible interpretations of dorsal cortical cell row, two of which has leaf insertion lines meeting at the dorsal stem mid-line, leaving no dorsal leaf-free strip. Scale bars: A: 600 µm, B–C, I: 40 µm. D, E, G, H, K: 60 µm. F, J: 240 µm. E, G: from NSW895686. Others from CHR587329
Eva Sundberg - One of the best experts on this subject based on the ideXlab platform.
-
the moss physcomitrella patens reproductive organ development is highly organized affected by the two shi sty genes and by the level of active auxin in the shi sty expression domain
Plant Physiology, 2013Co-Authors: Katarina Landberg, Eric R A Pederson, Tom Viaene, Behruz Bozorg, Jiři Friml, Henrik Jonsson, Mattias Thelander, Eva SundbergAbstract:In order to establish a reference for analysis of the function of auxin and the auxin biosynthesis regulators SHORT INTERNODE/STYLISH (SHI/STY) during Physcomitrella patens reproductive development, we have described male (antheridial) and female (archegonial) development in detail, including temporal and positional information of organ initiation. This has allowed us to define discrete stages of organ morphogenesis and to show that reproductive organ development in P. patens is highly organized and that organ phyllotaxis differs between vegetative and reproductive development. Using the PpSHI1 and PpSHI2 reporter and knockout lines, the auxin reporters GmGH3(pro):GUS and PpPINA(pro): GFP-GUS, and the auxin-conjugating transgene PpSHI2(pro):IAAL, we could show that the PpSHI genes, and by inference also auxin, play important roles for reproductive organ development in moss. The PpSHI genes are required for the apical opening of the reproductive organs, the final differentiation of the egg cell, and the progression of canal cells into a cell death program. The apical cells of the Archegonium, the canal cells, and the egg cell are also sites of auxin responsiveness and are affected by reduced levels of active auxin, suggesting that auxin mediates PpSHI function in the reproductive organs.
Ruilin You - One of the best experts on this subject based on the ideXlab platform.
-
preprophase band loses its function as a cytokinetic apparatus in mitosis of neck canal mother cell
Protoplasma, 2002Co-Authors: Ruilin You, Wenmei BaoAbstract:Preprophase bands in the neck canal mother cell and the central cell of the Archegonium of the fern Dryopteris crassirhizoma are observed with immunofluorescence microscopy. No phragmoplast is found during mitosis of the neck canal mother cell; however, the phragmoplast develops very well in the central cell. The neck canal mother cell undergoes karyokinesis but not cytokinesis and finally produces only one binucleate neck canal cell. However, the central cell undergoes cytokinesis and produces an egg cell and a ventral canal cell. These observations suggest that the preprophase band in the neck canal mother cell loses its function as a cytokinetic apparatus and becomes an evolutionary vestige in the development of the Archegonium.