Taxonomic Importance of Leaf Domatia of the Five Species of the Genus Cornus in Korea

다국어 초록 (Multilingual Abstract)

Three types of leaf domatia; Pocket (P), Tufts (T) and Tufts-Pocket (TP) were observed in the five species of Cornus namely; Cornus kousa, C. controversa, C. officinalis, C. walteri and C. alba. In C. walteri no tufts were observed, the domatia was just a well developed pocket one. In C. officinalis and C. kousa, tufts domatia of brownish color were observed but C. officinalis developed denser tufts than those observed in C. kousa. Unlike in C. kousa where the domatia covered about only ½ of the axil, in the C. officinalis tufts covered almost ¾ of the axil. In both species the tufts domatia were located in the inner side of the leaf axil. In C. controversa and C. alba whitish colored tufts were observed covering the Pockets and hence the Tuft‐Pocket domatia. In C. controversa the tufts were more than in C. alba but in both species the tufts were short and were located in the inner sides of the axil. Thus, based on these physiological features it was concluded that C. officinalis and C. kousa are sister species likewise C. controversa and C. alba while C. walteri belong to another lineage. The advancement of domatia (absence of tufts) in C. walteri suggests that they are the most advanced while C. officinalis and C. kousa the most primitive due to their possession of highly developed tufts and C. controversa and C. alba the intermediates.

참고문헌 (Reference)

1 Marquis, R. J., "Plant morphology and recruitment of the third trophic levelsubtle and little recognized defenses?" 75 : 330-334, 1996

2 Xiang, Q. Y., "Phylogenetic relationships of Cornus L. Sensu Lato and putative relatives inferred from rbcL sequence data" 80 : 723-734, 1993

3 Xiang, Q. Y., "Phylogenetic relationship in Cornus based on chloroplast DNA restriction sites: Implications for Biogeography and character evolution" 21 : 515-534, 1996

4 Murrell, Z. E., "Phylogenetic relationship in Cornus (Cornaceae)" 18 : 469-495, 1993

5 Martinez-solis I., "Leaf domatia in the section Alaternus (Miller) DC. of the genus Rhamnus (Rhamnaceae)" 112 : 311-318, 1993

6 O’Dowd, D. J., "Leaf domatia in korean plants: floristics, frequency, and biogeography" 114 : 137-148, 1994

7 O’Dowd, D. J., "Leaf domatia and foliar mite abundance in broad leaf deciduous forest of North Asia" 85 : 70-78, 1998

8 Agrawal, A. A., "How leaf domatia induced plant resistance affects herbivores, natural enemies and plant performance" 89 : 70-80, 2000

9 Norton, A. P., "Host plant manipulation of natural enemies: leaf domatia protect beneficial mites from insect predators" 126 : 535-542, 2000

10 Eyde, R. H., "Comprehending Cornus: Puzzles and progress in the systematics of the dogwoods" 54 : 233-351, 1988

11 O’Dowd, D. J., "Association between mites and leaf domatia" 6 : 179-182, 1991