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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Comparative systematic study of colleters and stipules of Rhizophoraceae with implications for adaptation to challenging environments
Botanical Journal of the Linnean Society, Volume 172, No. 4, Year 2013
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Description
Colleters are multicellular secretory structures found on various organs in flowering plants. Colleters on the adaxial sides of stipules have been hypothesized to play a role in protecting the developing shoot. Rhizophoraceae is a stipulate family with a broad distribution from mangrove to montane environments, which makes the family well suited for the examination of this hypothesis, but the colleters of Rhizophoraceae are not well known. We compared species from all three tribes of Rhizophoraceae, including five inland genera and all four mangrove genera. In all species, several to hundreds of colleters, sessile or stalked, arranged in rows aggregated in genus-specific shapes, are found at the adaxial bases of open and closed stipules. Pellacalyx uniquely has additional colleters at the stipule margins. Colleters are all of the standard type, comprising a central axis of core parenchyma with large vacuoles and tannins, and an outer palisade-like epidermis with organelles involved in secretory activity. An exception is Pellacalyx axillaris, in which colleters appear as extremely small epidermal protrusions. Kandelia obovata has a tracheary element in some colleters. Pellacalyx uniquely has an unusual fleshy outgrowth on the adaxial stipule base. We propose an evolutionary sequence in which Macarisia has plesiomorphic stipule and colleter traits and the mangrove Kandelia obovata with colleter vascular traces is most derived. Colleter and stipule structures are largely concordant with habitat and phylogeny, and show taxonomic value. The strong alignment of colleter and stipule patterns with habitat is suggestive that colleters have a protective function, although some components of these patterns may be phylogenetically determined. © 2013 The Linnean Society of London.
Authors & Co-Authors
Sheue, Chiou Rong
Taiwan, Taichung
National Chung Hsing University
Chesson, Peter L.
Taiwan, Taichung
National Chung Hsing University
United States, Tucson
The University of Arizona
Chen, Yingju
Taiwan, Taichung
National Chung Hsing University
Wu, Szuyang
Taiwan, Taichung
National Chung Hsing University
Wu, Yehhua
Taiwan, Taichung
National Chung Hsing University
Yong, Jean Wan Hong
Singapore, Singapore City
Singapore University of Technology and Design
Guu, Teyu
Taiwan, Taichung
National Chung Hsing University
Lim, Chunglu
Malaysia, Kepong
Institut Penyelidikan Perhutanan Malaysia
Randrianasolo, Razafiharimina Marie Agnès
Madagascar, Antananarivo
Université D'antananarivo
Razanajatovo, Mialy Harindra
Madagascar, Antananarivo
Université D'antananarivo
Germany, Konstanz
Universität Konstanz
Yang, Yuen Po
Taiwan, Dacun
Da-yeh University
Statistics
Citations: 14
Authors: 11
Affiliations: 7
Identifiers
Doi:
10.1111/boj.12058
ISSN:
00244074
e-ISSN:
10958339