scholarly journals Transcriptome Analysis of Arbuscular Mycorrhizal Casuarina glauca in Damage Mitigation of Roots on NaCl Stress

2021 ◽  
Vol 10 (1) ◽  
pp. 15
Author(s):  
Yihan Wang ◽  
Fengxin Dong ◽  
Ming Tang
Keyword(s):  
Salt Stress ◽  
Transcriptome Analysis ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Nacl Stress ◽  
Plant Tolerance ◽  
Casuarina Glauca ◽  
High Salt Stress ◽  
Physiological And Biochemical

Casuarina glauca grows in coastal areas suffering long-term damage due to high salt stress. Arbuscular mycorrhizal fungi (AMF) can colonize their roots to alleviate the effects of salt stress. However, the specific molecular mechanism still needs to be further explored. Our physiological and biochemical analysis showed that Rhizophagus irregularis inoculation played an important role in promoting plant growth, regulating ion balance, and changing the activity of antioxidant enzymes. Transcriptome analysis of roots revealed that 1827 differentially expressed genes (DEGs) were affected by both R. irregularis inoculation and NaCl stress. The enrichment of GO (Gene Ontology) and KEGG (Kyoto Encyclopedia of Genes and Genomes) showed that most of these DEGs were significantly enriched in ion transport, antioxidant enzyme activity, carbohydrate metabolism, and cell wall. HAK5, KAT3, SKOR, PIP1-2, PER64, CPER, GLP10, MYB46, NAC43, WRKY1, and WRKY19 were speculated to play the important roles in the salt tolerance of C. glauca induced by R. irregularis. Our research systematically revealed the effect of R. irregularis on the gene expression of C. glauca roots under salt stress, laying a theoretical foundation for the future use of AMF to enhance plant tolerance to salt stress.

Grazing intensity rather than host plant’s palatability shape the community of arbuscular mycorrhizal fungi in a steppe grassland

2021 ◽  
Author(s):  
Maede Faghihinia ◽  
Yi Zou ◽  
Yongfei Bai ◽  
Martin Dudáš ◽  
Rob Marrs ◽  
...  
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Community Composition ◽  
Mycorrhizal Fungi ◽  
Rhizosphere Soil ◽  
Grazing Intensity ◽  
Arbuscular Mycorrhizal ◽  
Grass Species ◽  
Α Diversity ◽  
Steppe Grassland

Abstract Arbuscular mycorrhizal fungi (AMF) are the predominant type of mycorrhizal fungi in roots and rhizosphere soil of grass species worldwide. Grasslands are currently experiencing increasing grazing pressure, but it is not yet clear how grazing intensity and host plant grazing preference by large herbivores interact with soil- and root-associated AMF communities. Here, we tested whether the diversity and community composition of AMF in the roots and rhizosphere soil of two dominant perennial grasses grazed differently by livestock change in response to grazing intensity. We conducted a study in a long-term field experiment in which seven levels of field-manipulated grazing intensities were maintained for 13 years in a typical steppe grassland in northern China. We extracted DNA from the roots and rhizosphere soil of two dominant grasses, Leymus chinense (Trin.) Tzvel. and Stipa grandis P. Smirn, with contrasting grazing preference by sheep. AMF DNA from root and soil samples were then subjected to molecular analysis. Our results showed that AMF α-diversity (richness) at the virtual taxa (VT) level varied as a function of grazing intensity. Different VTs showed completely different responses along the gradient, one increasing, one decreasing and others showing no response. Glomeraceae was the most abundant AMF family along the grazing gradient, which fits well with the theory of disturbance tolerance of this group. In addition, sheep grazing preference for host plants did not explain a considerable variation in AMF α-diversity. However, the two grass species exhibited different community composition in their roots and rhizosphere soils. Roots exhibited a lower α-diversity and higher β-diversity within the AMF community than soils. Overall, our results suggest that long-term grazing intensity might have changed the abundance of functionally-diverse AMF taxa in favor of those with disturbance-tolerant traits. We suggest our results would be useful in informing the choice of mycorrhizal fungi indicator variables when assessing the impacts of grassland management choices on grassland ecosystem functioning.

scholarly journals Arbuscular mycorrhizal fungi regulate the oxidative system, hormones and ionic equilibrium to trigger salt stress tolerance in Cucumis sativus L.

2018 ◽  
Vol 25 (6) ◽  
pp. 1102-1114 ◽  
Author(s):  
Abeer Hashem ◽  
Abdulaziz A. Alqarawi ◽  
Ramalingam Radhakrishnan ◽  
Al-Bandari Fahad Al-Arjani ◽  
Horiah Abdulaziz Aldehaish ◽  
...  
Keyword(s):  
Salt Stress ◽  
Arbuscular Mycorrhizal Fungi ◽  
Stress Tolerance ◽  
Cucumis Sativus ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Salt Stress Tolerance ◽  
Ionic Equilibrium ◽  
Cucumis Sativus L ◽  
Oxidative System

scholarly journals Impacts of long‐term elevated atmospheric CO 2 concentrations on communities of arbuscular mycorrhizal fungi

2019 ◽  
Vol 28 (14) ◽  
pp. 3445-3458 ◽  
Author(s):  
Irena Maček ◽  
Dave R. Clark ◽  
Nataša Šibanc ◽  
Gerald Moser ◽  
Dominik Vodnik ◽  
...  
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal

scholarly journals Alleviation of Salt Stress in Upland Rice (Oryza sativa L. ssp. indica cv. Leum Pua) Using Arbuscular Mycorrhizal Fungi Inoculation

2020 ◽  
Vol 11 ◽  
Author(s):  
Rujira Tisarum ◽  
Cattarin Theerawitaya ◽  
Thapanee Samphumphuang ◽  
Kanyamin Polispitak ◽  
Panarat Thongpoem ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Salt Stress ◽  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Upland Rice ◽  
Oryza Sativa L ◽  
Arbuscular Mycorrhizal

Dopamine and arbuscular mycorrhizal fungi act synergistically to promote apple growth under salt stress

2020 ◽  
Vol 178 ◽  
pp. 104159 ◽  
Author(s):  
Tengteng Gao ◽  
Xiaomin Liu ◽  
Lei Shan ◽  
Qian Wu ◽  
Yuan Liu ◽  
...  
Keyword(s):  
Salt Stress ◽  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal

scholarly journals Induction of Osmoregulation and Modulation of Salt Stress inAcacia gerrardiiBenth. by Arbuscular Mycorrhizal Fungi andBacillus subtilis(BERA 71)

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Abeer Hashem ◽  
E. F. Abd_Allah ◽  
A. A. Alqarawi ◽  
A. A. Al-Huqail ◽  
M. A. Shah
Keyword(s):  
Salt Stress ◽  
Arbuscular Mycorrhizal Fungi ◽  
Glycine Betaine ◽  
Mycorrhizal Fungi ◽  
Plant Stress ◽  
Arbuscular Mycorrhizal ◽  
Systemic Resistance ◽  
Plant Growth Promoting ◽  
Acacia Gerrardii

The role of soil microbiota in plant stress management, though speculated a lot, is still far from being completely understood. We conducted a greenhouse experiment to examine synergistic impact of plant growth promoting rhizobacterium,Bacillus subtilis(BERA 71), and arbuscular mycorrhizal fungi (AMF) (Claroideoglomus etunicatum;Rhizophagus intraradices; andFunneliformis mosseae) to induce acquired systemic resistance in Talh tree (Acacia gerrardiiBenth.) against adverse impact of salt stress. Compared to the control, the BERA 71 treatment significantly enhanced root colonization intensity by AMF, in both presence and absence of salt. We also found positive synergistic interaction betweenB.subtilisand AMFvis-a-visimprovement in the nutritional value in terms of increase in total lipids, phenols, and fiber content. The AMF and BERA 71 inoculated plants showed increased content of osmoprotectants such as glycine, betaine, and proline, though lipid peroxidation was reduced probably as a mechanism of salt tolerance. Furthermore, the application of bioinoculants to Talh tree turned out to be potentially beneficial in ameliorating the deleterious impact of salinity on plant metabolism, probably by modulating the osmoregulatory system (glycine betaine, proline, and phenols) and antioxidant enzymes system (SOD, CAT, POD, GR, APX, DHAR, MDAHR, and GSNOR).

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