The prokaryote messenger c-di-GMP triggers stalk cell differentiation in Dictyostelium.
The prokaryote messenger c-di-GMP triggers stalk cell differentiation in Dictyostelium.
复制标题
原核生物Messenger C-DI-GMP触发了Dictyostelium中的茎细胞分化。
DOI:
10.1038/nature11313
复制
发表时间:
2012-08-30
期刊:
影响因子:
64.8
通讯作者:
Schaap, Pauline
中科院分区:
文献类型:
--
作者:
Chen, Zhi-hui;Schaap, Pauline
Cyclic di-(3′:5′)-guanosine monophosphate (c-di-GMP) is a major prokaryote signalling intermediate, which is synthesized by diguanylate cyclases and triggers sessility and biofilm formation. We detected the first eukaryote diguanylate cyclases (DgcAs) in all major groups of Dictyostelia. Upon food depletion, Dictyostelium discoideum amoebas collect into aggregates, which first transform into migrating slugs and next into sessile fruiting structures. These structures consist of a spherical spore mass that is supported by a column of stalk cells and a basal disk. A polyketide, DIF-1, was isolated earlier, which induces stalk-like cells in vitro. However, its role in vivo proved recently to be restricted to basal disk formation. Here we show that Dictyostelium DgcA produces c-di-GMP as the morphogen responsible for stalk cell differentiation. D.discoideum DgcA synthesized c-di-GMP in a GTP-dependent manner and was expressed at the slug tip, the site of stalk cell differentiation. Disruption of the DgcA gene blocked the transition from slug migration to fructification and the expression of stalk genes. Fructification and stalk formation were restored by exposing dgca- slugs to wild-type secretion products or to c-di-GMP. Moreover, c-di-GMP, but not c-di-AMP, induced stalk gene expression in dilute cell monolayers. Apart from identifying the long elusive stalk-inducing morphogen, our work also identifies the first role for c-di-GMP in eukaryotes.
登录
查看更多内容
影响因子:
3.7
作者:
Shadwick LL;Spiegel FW;Shadwick JD;Brown MW;Silberman JD
通讯作者:
Silberman JD
DOI:
10.1073/pnas.040565697
发表时间:
2000-02-29
影响因子:
11.1
作者:
Blanton, RL;Fuller, D;Loomis, WF
通讯作者:
Loomis, WF
DOI:
10.1126/science.1130670
发表时间:
2006-10-27
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Schaap P;Winckler T;Nelson M;Alvarez-Curto E;Elgie B;Hagiwara H;Cavender J;Milano-Curto A;Rozen DE;Dingermann T;Mutzel R;Baldauf SL
通讯作者:
Baldauf SL
影响因子:
2.9
作者:
Ceccarelli, A;Zhukovskaya, N;Williams, J
通讯作者:
Williams, J
DOI:
10.2307/2482103
发表时间:
1952-01-01
期刊:
BULL TORREY BOT CLUB
影响因子:
--
作者:
RAPER, KENNETH B.;FENNELL, DOROTHY I.
通讯作者:
FENNELL, DOROTHY I.