Journal article
Lineages, lineage stability and pattern formation in leaves of variegated chimeras of Lophostemon confertus (R. Br.) Wilson & Waterhouse and Tristaniopis laurina (Smith) Wilson & Waterhouse (Myrtaceae)
Australian Journal of Botany, Vol.35(6), pp.701-714
1987
Abstract
Three variegated chimeras of L. confertus and T. laurina arise spontaneously in seedling populations: 1, white margin: green centre, 2, green margin: light green centre and 3, green margin: white centre. Types 1 and 2 are found in T. laurina and types 1 and 3 in L. confertus. We have determined chloroplast distribution in the leaf tissues by fluorescence microscopy to assess the basis for these colour patterns. In L. confertus, a layer of collenchyma underlies the adaxial epidermis, replaces the upper layer of palisade, and does not mask mutant inner tissues, concealed by the adaxial layer of palisade in type 2 leaves of T. laurina. The central colour patterns are explained on the basis of accepted paths of cell lineage in leaf development (protoderm green in all three types; hypodermal derivatives genetically green in 2 and 3; and subhypodermal cells chlorophyll-deficient in types 2 and 3). The cell lineages postulated are similar in both species and we show that the observations can be accounted for only by a shift in lineage path during leaf ontogeny. We conclude that some established concepts of leaf ontogeny require revision.
Details
- Title
- Lineages, lineage stability and pattern formation in leaves of variegated chimeras of Lophostemon confertus (R. Br.) Wilson & Waterhouse and Tristaniopis laurina (Smith) Wilson & Waterhouse (Myrtaceae)
- Authors/Creators
- D.V. Beardsell (Author/Creator)J.A. Considine (Author/Creator)
- Publication Details
- Australian Journal of Botany, Vol.35(6), pp.701-714
- Publisher
- CSIRO Publishing
- Identifiers
- 991005543522507891
- Copyright
- © 1987, CSIRO.
- Murdoch Affiliation
- School of Environmental and Life Sciences
- Language
- English
- Resource Type
- Journal article
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- 3 Agriculture, Environment & Ecology
- 3.4 Crop Science
- 3.4.159 Arabidopsis
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- Plant & Animal Science