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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:35/0  |  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.


  
Impacts of intensifying or expanding cereal cropping in sub-Saharan Africa on greenhouse gas emissions and food security 期刊论文
GLOBAL CHANGE BIOLOGY, 2019, 25 (11) : 3720-3730
作者:  van Loon, Marloes P.;  Hijbeek, Renske;  ten Berge, Hein F. M.;  De Sy, Veronique;  ten Broeke, Guus A.;  Solomon, Dawit;  van Ittersum, Martin K.
收藏  |  浏览/下载:30/0  |  提交时间:2019/11/27
fertilizer  food self-sufficiency  intensification  land use conversion  nitrogen  nutrient use efficiency  yield gaps  
Sustained productivity of intensively managed loblolly pine plantations: Persistence of fertilization and weed control effects across rotations 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2019, 446: 38-53
作者:  Subedi, Praveen;  Jokela, Eric J.;  Vogel, Jason G.;  Martin, Timothy A.
收藏  |  浏览/下载:27/0  |  提交时间:2019/11/27
Loblolly pine  Long-term productivity  Multi-rotational study  Nutrient use efficiency  Spodosols  
Trade openness and the nutrient use of nations 期刊论文
ENVIRONMENTAL RESEARCH LETTERS, 2018, 13 (12)
作者:  Dang, Qian;  Konar, Megan;  Debaere, Peter
收藏  |  浏览/下载:15/0  |  提交时间:2019/04/09
trade  nutrient use  causal inference  instrumental variables  
Effects of conversion from a natural evergreen broadleaf forest to a Moso bamboo plantation on the soil nutrient pools, microbial biomass and enzyme activities in a subtropical area 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2018, 422: 161-171
作者:  Cai, Xiaoqing;  Lin, Ziwen;  Penttinen, Petri;  Li, Yongfu;  Li, Yongchun;  Luo, Yu;  Yue, Tian;  Jiang, Peikun;  Fu, Weijun
收藏  |  浏览/下载:28/0  |  提交时间:2019/04/09
Evergreen broadleaf forest  Land-use conversion  Microbial biomass  Moso bamboo plantation  Soil nutrient form  Soil enzyme  
Nutrients Metabolism of Agricultural Production in Argentina: NPK Input and Output Flows from 1961 to 2015 期刊论文
ECOLOGICAL ECONOMICS, 2018, 147: 74-83
作者:  Diaz de Astarloa, D. A.;  Pengue, W. A.
收藏  |  浏览/下载:12/0  |  提交时间:2019/04/09
Argentina  Biomass Production  Nutrient Flow Analysis  Fertilizer Use  Soil Nutrients  Virtual Soil  
Increased resource use efficiency amplifies positive response of aquatic primary production to experimental warming 期刊论文
GLOBAL CHANGE BIOLOGY, 2018, 24 (3) : 1069-1084
作者:  Hood, James M.;  Benstead, Jonathan P.;  Cross, Wyatt F.;  Huryn, Alexander D.;  Johnson, Philip W.;  Gislason, Gisli M.;  Junker, James R.;  Nelson, Daniel;  Olafsson, Jon S.;  Chau Tran
收藏  |  浏览/下载:24/0  |  提交时间:2019/04/09
climate change  ecosystem respiration  gross primary production  headwater streams  nutrient cycling  nutrient use efficiency  stream metabolism  temperature  
Optimal metabolic regulation along resource stoichiometry gradients 期刊论文
ECOLOGY LETTERS, 2017, 20 (9)
作者:  Manzoni, Stefano;  Capek, Petr;  Mooshammer, Maria;  Lindahl, Bjorn D.;  Richter, Andreas;  Santruckova, Hana
收藏  |  浏览/下载:29/0  |  提交时间:2019/04/09
Carbon use efficiency  consumer  ecological stoichiometry  microbial biomass  nitrogen  nutrient limitation  phosphorus  stoichiometric model  
Long term carbon and nutrient dynamics within two small radiata pine catchments 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2017, 389: 43479
作者:  Turner, John;  Lambert, Marcia;  Turner, Sue
收藏  |  浏览/下载:9/0  |  提交时间:2019/04/09
Nutrient accumulation  Carbon accretion  Pine plantations  Water use efficiency