Ancestral reproductive structure in basal kelp Aureophycus aleuticus.
Ancestral reproductive structure in basal kelp Aureophycus aleuticus.
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DOI:
10.1038/srep02491
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发表时间:
2013
影响因子:
4.6
通讯作者:
Holser, Karin
中科院分区:
文献类型:
--
作者:
Kawai, Hiroshi;Hanyuda, Takeaki;Ridgway, L. Michelle;Holser, Karin
Laminarialean species (so-called kelps) are the largest photosynthetic organisms in aquatic environments, constituting significant ecological components of coastal ecosystems. The largest kelps such as Macrocystis exhibit differentiation between stipe and blade, as well as buoyancy to maintain the distal portion at the water's surface for photosynthesis, while bearing reproductive structures only near the base on special blades (sporophylls). There is a considerable gap between basic kelps such as Chorda and derived kelps, and the evolution of kelp specialization remains unclear. Here we report novel reproductive adaptations in the recently discovered species Aureophycus aleuticus; unlike any known kelps, A. aleuticus forms zoidangia only on the expanded, disc-shaped holdfast. Molecular phylogeny suggests that A. aleuticus is most basal among derived kelps. Because Aureophycus lacks any of the elaborate anatomical structures found in other derived kelps, we suggest that it exhibits some of the most ancestral morphological features of kelps.
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DOI:
10.1007/bf02489413
发表时间:
1992-03-01
期刊:
BOTANICAL MAGAZINE-TOKYO
影响因子:
--
作者:
KAWAI, H
通讯作者:
KAWAI, H
影响因子:
2.9
作者:
KAWAI, H
通讯作者:
KAWAI, H
影响因子:
6.5
作者:
Vos, RA
通讯作者:
Vos, RA
影响因子:
6.8
作者:
AKAIKE, H
通讯作者:
AKAIKE, H
影响因子:
2.9
作者:
Lane, CE;Mayes, C;Saunders, GW
通讯作者:
Saunders, GW