Leaf Cuticular Morphology Links Platanaceae and Proteaceae

By R. Carpenter, R. Hill, Gregory J. Jordan. INTERNATIONAL JOURNAL PLANT SCIENCES, 2005

83 citations recorded by the source corpus.

The leaf cuticular morphology of extant species of Platanus was investigated using light and scanning electron microscopy. All species are shown to possess trichome bases of the same type as those commonly found in Proteaceae. Of particular significance are compound forms that consist of an annular surface scar associated with more than one underlying epidermal cell. These are found on the adaxial leaf surfaces of all species of Platanus and are also clearly evident on the abaxial surface of Platanus orientalis. This type of trichome base is therefore interpreted as the first detected nonreproductive morphological synapomorphy linking Proteaceae and Platanaceae. Also, the laterocytic, sometimes paracytic, or anomocytic arrangement of subsidiary cells in Platanus is distinct from the general state in Proteaceae, which is brachyparacytic and presumably derived. In Bellendena, possibly the most basal genus of extant Proteaceae, subsidiary cell arrangements resemble those of Platanus. These results are discussed with respect to leaf fossil records of Proteales, where it is concluded that the combination of brachyparacytic stomata and compound trichome bases is strong evidence for Proteaceae.

Subfields: Ecology, Evolution, Behavior and Systematics, Food Science

View Paper: https://www.semanticscholar.org/paper/b8373c87c290ba68051b613505a339b363b4a97c

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In Ecology, Evolution, Behavior and Systematics

1. J. Doyle
2. P. K. Endress
3. P. Weston
4. NP Barker
5. D. Soltis
6. Pamela S. Soltis
7. Chelsea D. Specht
8. M. Bartlett

In Food Science

1. J. Doyle

Citations in the corpus

• A new suprageneric classification of the Proteaceae, with an annotated checklist of genera (2006, background): “An anatomical character that supports the position of Bellendena as sister group to the rest of the Proteaceae is its possession of laterocytic stomata, in common with Platanus and unlike all other Proteaceae, which have brachyparacytic stomata (Carpenter et al. 2005).”
• Integrating Early Cretaceous fossils into the phylogeny of living angiosperms: Magnoliidae and eudicots (2010, background): “Because pinnately compound leaves are most common in the subclass Rosidae (Hickey & Wolfe, 1975; Doyle, 2007), Hickey & Doyle (1977) suggested that Sapindopsis might represent more primitive relatives of Rosidae (cf.”