期刊
JOURNAL OF SYSTEMATICS AND EVOLUTION
卷 56, 期 4, 页码 394-400出版社
WILEY
DOI: 10.1111/jse.12303
关键词
cambial variants; lianas; successive cambia; Tetrastigma; variant secondary growth; vines; Vitaceae; wood and bark anatomy
资金
- Peter Buck Postdoctoral Fellowship at the SI-NMNH
Successive cambia in Vitaceae have been reported solely for Tetrastigma, a diverse genus of lianas found primarily in tropical Asia, extending into Australia. However, the structure and origin of these successive cambia have never been fully studied. Here we report the presence of this cambial variant in Tetrastigma retinervum and T. voinierianum, and describe its ontogeny in detail in the latter. New cambia appear successively in stems of Tetrastigma differentiating from the innermost parenchyma cells of the primary phloem, which are located interior to the pericyclic fiber strands. This study constitutes the first report of successive cambia being derived from primary phloem parenchyma in woody plants as a whole. Both species are members of Tetrastigma clade VI, the most species-rich lineage within the genus. The examination of mature stems of additional species of Tetrastigma should determine the distribution of this unique type of cambial variant in the genus and enhance our understanding of the adaptive significance of this unusual character.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据