Mangrove metagenome
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1206760 | ENA |
REPOSITORIES: ENA
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Project description:Global climate change increasingly challenges agriculture with flooding and salinity. Among strategies to enhance crop resilience to these stresses, we showed two mangrove strains that can enhance flooding and salinity tolerance in rice plants. Two strains massively enhanced the growth and yield of Oryza sativa cv. Nipponbare under hydroponic growth conditions with and without salt treatment. The bacteria-induced transcriptome changes in O. sativa roots related to ABA-signaling with suberin deposition in root tissues explain the altered responses of colonized rice plants to hypoxic and saline stress conditions. While enhancing yield and grain quality, bacterially colonized rice plants also show much earlier flowering, thereby massively shortening the life cycle of rice plants and opening the possibility for an additional harvest per year. These results show that microbes can be a powerful tool for enhancing the yield and resilience of rice to hypoxic and saline stress conditions.
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Project description:To study the responses of microbial communities to short-term nitrogen addition and warming,here we examine microbial communities in mangrove sediments subjected to a 4-months experimental simulation of eutrophication with 185 g m-2 year-1 nitrogen addition (N), 3oC warming (W) and nitrogen addition*warming interaction (NW).
2022-03-01 | GSE190739 | GEO
Project description:Hernandia nymphaeifolia is an endangered mangrove associate with high ecological, ornamental, and medicinal values. Its special combination of glycophytic and halophytic characteristics provides an ideal system for investigating salt-responsive mechanisms that may be easily extended to genetic improvement of crops with high salt tolerance. However, little is known regarding salt-responsive mechanisms in H. nymphaeifolia. In this study, we posed gradient salt treatments on H. nymphaeifolia seedlings and investigated their physiological and transcriptional reprogramming in response to salinity stress. The results revealed that hyper-salinity stress posed more adverse impacts on leaf growth, cell integrity and photosynthetic performance of H. nymphaeifolia seedlings compared to those in growing in fresh water or low salt condition, mirroring its nature as a mangrove associate. Genes associated with osmolarity sensor and regulator, ROS scavenging and ion homeostasis were differentially expressed accordingly to alleviate the destructive effects. Furthermore, our results unraveled some pivotal kinases and proteins that regulate the synergistic expression of salt-responsive genes, which may act a key role in regulating the transcriptional remodeling upon salinity stress. These findings enrich our knowledge on the molecular mechanisms underlying the phenotypic plasticity of mangrove associates, and also provide valuable genetic resources for mangrove’s conservation and potential bioengineering application in agricultural field.
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