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Microbial evolutionary strategies in a dynamic ocean 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (11) : 5943-5948
作者:  Walworth, Nathan G.;  Zakem, Emily J.;  Dunne, John P.;  Collins, Sinead;  Levine, Naomi M.
收藏  |  浏览/下载:10/0  |  提交时间:2020/05/13
evolution  marine microbes  fluctuating environment  adaptation timescales  advection  
An intestinal zinc sensor regulates food intake and developmental growth 期刊论文
NATURE, 2020, 580 (7802) : 263-+
作者:  Wu, Thomas D.;  39;Gorman, William E.
收藏  |  浏览/下载:14/0  |  提交时间:2020/07/03

Hodor, an intestinal zinc-gated chloride channel, controls systemic growth in Drosophila by promoting food intake and by modulating Tor signalling and lysosomal homeostasis within enterocytes.


In cells, organs and whole organisms, nutrient sensing is key to maintaining homeostasis and adapting to a fluctuating environment(1). In many animals, nutrient sensors are found within the enteroendocrine cells of the digestive system  however, less is known about nutrient sensing in their cellular siblings, the absorptive enterocytes(1). Here we use a genetic screen in Drosophila melanogaster to identify Hodor, an ionotropic receptor in enterocytes that sustains larval development, particularly in nutrient-scarce conditions. Experiments in Xenopus oocytes and flies indicate that Hodor is a pH-sensitive, zinc-gated chloride channel that mediates a previously unrecognized dietary preference for zinc. Hodor controls systemic growth from a subset of enterocytes-interstitial cells-by promoting food intake and insulin/IGF signalling. Although Hodor sustains gut luminal acidity and restrains microbial loads, its effect on systemic growth results from the modulation of Tor signalling and lysosomal homeostasis within interstitial cells. Hodor-like genes are insect-specific, and may represent targets for the control of disease vectors. Indeed, CRISPR-Cas9 genome editing revealed that the single hodor orthologue in Anopheles gambiae is an essential gene. Our findings highlight the need to consider the instructive contributions of metals-and, more generally, micronutrients-to energy homeostasis.


  
Evolutionary selection of biofilm-mediated extended phenotypes in Yersinia pestis in response to a fluctuating environment 期刊论文
NATURE COMMUNICATIONS, 2020, 11 (1)
作者:  Cui, Yujun;  Schmid, Boris, V;  Cao, Hanli;  Dai, Xiang;  Du, Zongmin;  Easterday, W. Ryan;  Fang, Haihong;  Guo, Chenyi;  Huang, Shanqian;  Liu, Wanbing;  Qi, Zhizhen;  Song, Yajun;  Tian, Huaiyu;  Wang, Min;  Wu, Yarong;  Xu, Bing;  Yang, Chao;  Yang, Jing;  Yang, Xianwei;  Zhang, Qingwen;  Jakobsen, Kjetill S.;  Zhang, Yujiang;  Stenseth, Nils Chr;  Yang, Ruifu
收藏  |  浏览/下载:15/0  |  提交时间:2020/05/13
How differing modes of non-genetic inheritance affect population viability in fluctuating environments 期刊论文
ECOLOGY LETTERS, 2019, 22 (11) : 1767-1775
作者:  Proulx, Stephen R.;  Dey, Snigdhadip;  Guzella, Thiago;  Teotonio, Henrique
收藏  |  浏览/下载:6/0  |  提交时间:2019/11/27
Autocorrelation  Bayesian analysis  C.elegans  carryover  epigenetics  experimental time series  fitness  fluctuating environments  growth rates  maternal effects  
Transgenerational effects benefit offspring across diverse environments: a meta-analysis in plants and animals 期刊论文
ECOLOGY LETTERS, 2019, 22 (11) : 1976-1986
作者:  Yin, Junjie;  Zhou, Ming;  Lin, Zeru;  Li, Qingshun Q.;  Zhang, Yuan-Ye
收藏  |  浏览/下载:8/0  |  提交时间:2019/11/27
Fluctuating environment  meta-analysis  parental effect  transgenerational effect  
Size-by-environment interactions: a neglected dimension of species' responses to environmental variation 期刊论文
ECOLOGY LETTERS, 2018, 21 (12) : 1757-1770
作者:  Tredennick, Andrew T.;  Teller, Brittany J.;  Adler, Peter B.;  Hooker, Giles;  Ellner, Stephen P.
收藏  |  浏览/下载:6/0  |  提交时间:2019/04/09
demographic buffering  demography  environmental variability  individual heterogeneity  individual size  integral projection model  population model  
Pushing the limit: Resilience of an Arctic copepod to environmental fluctuations 期刊论文
GLOBAL CHANGE BIOLOGY, 2018, 24 (11) : 5426-5439
作者:  Kvile, Kristina Oie;  Ashjian, Carin;  Feng, Zhixuan;  Zhang, Jinlun;  Ji, Rubao
收藏  |  浏览/下载:6/0  |  提交时间:2019/04/09
Arctic Ocean  Calanus hyperboreus  climate change  expatriation  extreme environment  life cycle  peripheral population  resilience  
Enhanced Airglow Signature Observed at Titan in Response to its Fluctuating Magnetospheric Environment 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2018, 45 (17) : 8864-8870
作者:  Royer, E. M.;  Esposito, L. W.;  Crary, F.;  Wahlund, J. -E.
收藏  |  浏览/下载:5/0  |  提交时间:2019/04/09
A global resource allocation strategy governs growth transition kinetics of Escherichia coli 期刊论文
NATURE, 2017, 551 (7678) : 119-+
作者:  Erickson, David W.;  Schink, Severin J.;  Patsalo, Vadim;  Williamson, James R.;  Gerland, Ulrich;  Hwa, Terence
收藏  |  浏览/下载:10/0  |  提交时间:2019/11/27
Species packing in eco-evolutionary models of seasonally fluctuating environments 期刊论文
ECOLOGY LETTERS, 2017, 20 (9)
作者:  Kremer, Colin T.;  Klausmeier, Christopher A.
收藏  |  浏览/下载:3/0  |  提交时间:2019/04/09
Adaptive dynamics  coexistence  ESS  evolutionary ecology  limiting similarity  temporal variation