An epithelial tissue in Dictyostelium challenges the traditional origin of metazoan multicellularity.
An epithelial tissue in Dictyostelium challenges the traditional origin of metazoan multicellularity.
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DOI:
10.1002/bies.201100187
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发表时间:
2012-10
期刊:
影响因子:
4
通讯作者:
Weis, William I.
中科院分区:
文献类型:
--
作者:
Dickinson, Daniel J.;Nelson, W. James;Weis, William I.
Metazoans (multicellular animals) are defined by the presence of polarized epithelial tissues, and epithelial morphogenesis contributes to the diversity of animal body plans. The recent finding of a polarized epithelium in the non-metazoan social amoeba Dictyostelium discoideum demonstrates that an epithelial tissue is not a unique feature of metazoans and calls into question the traditional view that multicellularity evolved independently in social amoebae and metazoans. We propose the alternative hypothesis that animals, fungi and social amoebae evolved from an ancestor that spent a portion of its life cycle in a multicellular state and possessed molecular machinery necessary for forming an epithelial tissue. This hypothesis makes testable predictions regarding tissue organization in close relatives of metazoans and provides a novel conceptual framework for studies of early animal evolution.
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影响因子:
11.8
作者:
Dickinson, Daniel J.;Robinson, Douglas N.;Weis, William I.
通讯作者:
Weis, William I.
影响因子:
4.8
作者:
Li, ZG;Kim, SH;Sacks, DB
通讯作者:
Sacks, DB
影响因子:
2.9
作者:
Fahey, Bryony;Degnan, Bernard M.
通讯作者:
Degnan, Bernard M.
DOI:
10.1126/science.1199633
发表时间:
2011-03-11
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Dickinson DJ;Nelson WJ;Weis WI
通讯作者:
Weis WI
影响因子:
3
作者:
HOHL, HR;HAMAMOTO, ST;HEMMES, DE
通讯作者:
HEMMES, DE