Plant Hormones as Key Regulators in Plant-Microbe Interactions Under Salt Stress

2018 ◽  
pp. 165-182 ◽  
Author(s):  
Dilfuza Egamberdieva ◽  
Stephan Wirth ◽  
Elsayed Fathi Abd_Allah
Keyword(s):  
Salt Stress ◽  
Plant Hormones ◽  
Microbe Interactions

Plant hormones in salt stress tolerance

2015 ◽  
Vol 58 (3) ◽  
pp. 147-155 ◽  
Author(s):  
Hojin Ryu ◽  
Yong-Gu Cho
Keyword(s):  
Salt Stress ◽  
Stress Tolerance ◽  
Plant Hormones ◽  
Salt Stress Tolerance

scholarly journals The effect of several stress conditions and growth regulators on photosynthesis and translocation of assimilates in the bean plant

2015 ◽  
Vol 44 (4) ◽  
pp. 567-588 ◽  
Author(s):  
Z. Strack ◽  
R. Karwowska ◽  
E. Kraszewska
Keyword(s):  
Salt Stress ◽  
Water Potential ◽  
Nutrient Solution ◽  
Growth Regulators ◽  
Plant Hormones ◽  
Apical Part ◽  
Negative Effects ◽  
Water Culture ◽  
Balance Of Plant ◽  
Bean Plants

Studies were performed on young bean plants, grown in water culture. The effect of salt stress, X-flays and flooding on growth, photosynthesis and translocation of assimilates was investigated. Salt stress (NaCl and Na<sub>2</sub>SO<sub>4</sub>), especially at - 4.5 atm. of water potential, depressed all the mentioned processes, but most dramatically - photosynthesis. Export of photosynthetes from the blades decreased. Salt stress not only reduced the rate of translocation, but also influenced the pattern of <sup>14</sup>C-distoibution, especially inhibited transport to apical part, with growth seriously retarded. Gibberellin (GA<sub>3</sub>, 100 ppm sprayed on leaves) counteracted the negative effects caused by salinization, but did not affected either photosynthesis, or translocation in plants from normal nutrient solution. The conclusion may be advanced, that salt stress disturbed the balance of plant hormones especially gibberellins, which probably participate in. regulation of assimilate translocation.

scholarly journals Transcriptome Analysis of Ice Plant Growth-Promoting Endophytic Bacterium Halomonas sp. Strain MC1 to Identify the Genes Involved in Salt Tolerance

2020 ◽  
Vol 8 (1) ◽  
pp. 88 ◽  
Author(s):  
Jian Zhang ◽  
Pengcheng Wang ◽  
Hongmei Tian ◽  
Zhen Tao ◽  
Tingting Guo
Keyword(s):  
Salt Stress ◽  
Salt Tolerance ◽  
Endophytic Bacterium ◽  
Complex Salt ◽  
Rna Seq ◽  
Ice Plant ◽  
Soil Ecosystems ◽  
Plant Growth Promoting ◽  
Microbe Interactions ◽  
Growth Promoting

Salt stress is an important adverse condition encountered during plant and microbe growth in terrestrial soil ecosystems. Currently, how ice plant (Mesembryanthemum crystallinum) growth-promoting endophytic bacteria (EB) cope with salt stress and regulate growth and the genes responsible for salt tolerance remain unknown. We applied RNA-Seq technology to determine the growth mechanism of the EB Halomonas sp. MC1 strain and the genes involved in salt tolerance. A total of 893 genes were significantly regulated after salt treatment. These genes included 401 upregulated and 492 downregulated genes. Gene Ontology enrichment and Kyoto Encyclopedia of Genes and Genomes analysis revealed that the most enriched genes included those related to the outer membrane-bounded periplasmic space, ATPase activity, catabolic process, and proton transmembrane transport. The quantitative real-time polymerase chain reaction data were similar to those obtained from RNA-Seq. The MC1 strain maintained survival under salt stress by regulating cellular and metabolic processes and pyruvate metabolism pathways such as organic and carboxylic acid catabolic pathways. We highlighted the response mechanism of Halomonas sp. MC1 to fully understand the dynamics of complex salt–microbe interactions.

scholarly journals Bacterial Communities of Sediments in a Seawater-Freshwater Transition Zone During the Wet and Dry Seasons in Pearl River Estuary

2021 ◽  
Author(s):  
Yongbin Li ◽  
Duanyi Huang ◽  
Weimin Sun ◽  
Xiaoxu Sun ◽  
Gen Yan ◽  
...  
Keyword(s):  
Salt Stress ◽  
Bacterial Community ◽  
Seawater Intrusion ◽  
Bacterial Communities ◽  
Bacterial Community Composition ◽  
River Estuary ◽  
Pearl River Estuary ◽  
Dry Season ◽  
Pearl River ◽  
Microbe Interactions

Abstract Seawater intrusion has a detrimental effect on agriculture, industry and human health. One question of particular interest is how the microbial community responds to and reflects seawater intrusion with seasonal variation. The current study explored the seasonal changes in bacterial community composition and interaction in the vicinity of Pearl River Estuary in January (dry season) and September (wet seasons). Results indicated that the salinity (expressed as electrical conductivity value) of sediment samples obtained in dry season was higher than that in wet season. The salt stress induced a declined alpha diversity but resulted in a loosely connected and unstable biotic interaction network in the bacterial communities. Random forest prediction and redundancy analysis of bacterial community indicated that salinity substantially affected the bacterial communities. Multiple lines of evidence, including the enrichment of bacterial taxa in the high-salinity location, microbe-microbe interactions, environment-microbe interactions, and machine learning approach, demonstrated that the families Moraxellaceae and Planococcaceae were the keystone taxa and were resistant to salt stress, which suggested that both of them can be used as potential biological indicators of monitoring and controlling seawater intrusion in coastal zone areas.

scholarly journals RNA-seq reveals that multiple plant hormones are regulated by Bacillus cereus G2 in Glycyrrhiza uralensis subjected to salt stress

2021 ◽  
Vol 16 (1) ◽  
pp. 591-603
Author(s):  
Xiang Xiao ◽  
Qiuli Wang ◽  
Duoyong Lang ◽  
Yuankui Chu ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Salt Stress ◽  
Bacillus Cereus ◽  
Plant Hormones ◽  
Glycyrrhiza Uralensis ◽  
Rna Seq

How Plant Hormones Mediate Salt Stress Responses

2020 ◽  
Vol 25 (11) ◽  
pp. 1117-1130 ◽  
Author(s):  
Zipeng Yu ◽  
Xiangbo Duan ◽  
Lu Luo ◽  
Shaojun Dai ◽  
Zhaojun Ding ◽  
...  
Keyword(s):  
Salt Stress ◽  
Plant Hormones ◽  
Stress Responses

Neurotropic enteroviruses co-opt “fair-weather-friend” commensal gut microbiota to drive host infection and central nervous system disturbances

2019 ◽  
Vol 42 ◽  
Author(s):  
Kevin B. Clark
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Gut Bacteria ◽  
Infection Cycle ◽  
Fair Weather ◽  
Host Health ◽  
Microbe Interactions ◽  
Animal Hosts ◽  
Host Infection ◽  
Neuropsychiatric Conditions

Abstract Some neurotropic enteroviruses hijack Trojan horse/raft commensal gut bacteria to render devastating biomimicking cryptic attacks on human/animal hosts. Such virus-microbe interactions manipulate hosts’ gut-brain axes with accompanying infection-cycle-optimizing central nervous system (CNS) disturbances, including severe neurodevelopmental, neuromotor, and neuropsychiatric conditions. Co-opted bacteria thus indirectly influence host health, development, behavior, and mind as possible “fair-weather-friend” symbionts, switching from commensal to context-dependent pathogen-like strategies benefiting gut-bacteria fitness.

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