scholarly journals Arbuscular Mycorrhizal Symbiosis Mitigates Iron (Fe)-Deficiency Retardation in Alfalfa (Medicago sativa L.) Through the Enhancement of Fe Accumulation and Sulfur-Assisted Antioxidant Defense

2020 ◽  
Vol 21 (6) ◽  
pp. 2219 ◽  
Author(s):  
Md. Atikur Rahman ◽  
Monika Parvin ◽  
Urmi Das ◽  
Esrat Jahan Ela ◽  
Sang-Hoon Lee ◽  
...  
Keyword(s):  
Medicago Sativa ◽  
Mycorrhizal Fungi ◽  
Antioxidant Defense ◽  
Plant Biomass ◽  
Reductase Activity ◽  
Arbuscular Mycorrhizal ◽  
Fe Deficiency ◽  
Mycorrhizal Symbiosis ◽  
Uptake System ◽  
Medicago Sativa L

Iron (Fe)-deficiency is one of the major constraints affecting growth, yield and nutritional quality in plants. This study was performed to elucidate how arbuscular mycorrhizal fungi (AMF) alleviate Fe-deficiency retardation in alfalfa (Medicago sativa L.). AMF supplementation improved plant biomass, chlorophyll score, Fv/Fm (quantum efficiency of photosystem II), and Pi_ABS (photosynthesis performance index), and reduced cell death, electrolyte leakage, and hydrogen peroxide accumulation in alfalfa. Moreover, AMF enhanced ferric chelate reductase activity as well as Fe, Zn, S and P in alfalfa under Fe-deficiency. Although Fe-transporters (MsIRT1 and MsNramp1) did not induce in root but MsFRO1 significantly induced by AMF under Fe deficiency in roots, suggesting that AMF-mediated Fe enhancement is related to the bioavailability of Fe at rhizosphere/root apoplast rather than the upregulation of Fe transporters under Fe deficiency in alfalfa. Several S-transporters (MsSULTR1;1, MsSULTR1;2, MsSULTR1;3, and MsSULTR3;1) markedly increased following AMF supplementation with or without Fe-deficiency alfalfa. Our study further suggests that Fe uptake system is independently influenced by AMF regardless of the S status in alfalfa. However, the increase of S in alfalfa is correlated with the elevation of GR and S-metabolites (glutathione and cysteine) associated with antioxidant defense under Fe deficiency.

scholarly journals Sodium Chloride Stress Induced Changes in Leaf Osmotic Adjustment of Trifoliate Orange (Poncirus trifoliata) Seedlings Inoculated with Mycorrhizal Fungi

2011 ◽  
Vol 39 (2) ◽  
pp. 64 ◽  
Author(s):  
Ying-Ning ZOU ◽  
Qiang-Sheng WU
Keyword(s):  
Osmotic Adjustment ◽  
Mycorrhizal Fungi ◽  
Plant Biomass ◽  
Arbuscular Mycorrhizal ◽  
Arbuscular Mycorrhizas ◽  
Mycorrhizal Colonization ◽  
Poncirus Trifoliata ◽  
Mycorrhizal Symbiosis ◽  
Trifoliate Orange ◽  
K Concentration

Citrus plants are sensitive to salinity, and thus employing new approaches to alleviate salt damage are necessary. The present study evaluated the effect of two arbuscular mycorrhizal fungi (AMF), Glomus mosseae and G. versiforme, on leaf osmotic adjustment of trifoliate orange (Poncirus trifoliata) seedings exposed to 100 mM NaCl. Salinity significantly inhibited mycorrhizal colonization, plant biomass and leaf relative water content, whereas the reduce of plant biomass was notably alleviated by the mycorrhizal colonization. Mycorrhizal seedlings exhibited significantly lower Na+ and Ca2+ concentrations, whilst also recorded higher K+ concentration and K+/Na+, Ca2+/Na+ and Mg2+/Na+ ratios at both salinity levels. Under salinity stress, mycorrhizal symbiosis markedly decreased sucrose concentrations of leaves and also increased glucose, fructose and proline concentrations of leaves. The results suggest that arbuscular mycorrhizas improved leaf osmotic adjustment responses of the seedlings to salt stress, thus enhancing salt tolerance of mycorrhizal plants.

scholarly journals Effect of Vermicompost and Selected Plant Preparations on the Development of Arbuscular Mycorrhizal Symbiosis in Lettuce (Lactuca sativa)

2018 ◽  
Vol 66 (1) ◽  
pp. 195-201
Author(s):  
Michaela Stroblová ◽  
Ladislava Prokopová ◽  
Jaroslav Záhora
Keyword(s):  
Mycorrhizal Fungi ◽  
Dry Matter ◽  
Plant Biomass ◽  
Arbuscular Mycorrhizal ◽  
Arbuscular Mycorrhizal Symbiosis ◽  
Mycorrhizal Symbiosis ◽  
Extraradical Mycelium ◽  
Significant Difference ◽  
Plant Biomass Production ◽  
Dry Matter Weight

The aim of the pot experiment was to evaluate effect of vermicompost and promoting plant preparations application (Symbivit and Plantaktiv) on the development of arbuscular mycorrhizal symbiosis in lettuce, amount of extraradical mycelium of mycorrhizal fungi in soil and plant biomass production. Symbivit contains six species of mycorrhizal fungi and Plantaktiv contains magnesium sulfate activated by oxygen promoting activity of aerobic microorganisms in the soil. The application of vermicompost and promoting plant preparations did not have a statistically significant effect on lettuce root colonization by mycorrhizal fungi. The greatest length of extraradical mycelium was observed in variant with vermicompost application, in variant with addition of vermicompost and Symbivit, and in variant with vermicompost applied with both plant preparations. There was detected statistically significant difference when compared to control variant. Dry matter weight of aboveground biomass and root of the lettuce were statistically significantly increased in all variants, where vermicompost was applied, either alone or in combination with plant preparations. Separate application of Symbivit or Plantaktiv did not have a statistically significant effect either on the length of extraradical mycelium or dry matter weight of the lettuce.

scholarly journals THE INFLUENCE OF ARBUSCULAR MYCORRHIZAL FUNGI ON ALFALFA RESISTANCE AGAINST POLLUTION WITH HEAVY METALS AND ARSENICUM

2007 ◽  
Vol 5 ◽  
pp. 7-14
Author(s):  
Zh.Z. Guralchuk ◽  
C. Del Val ◽  
J.M. Barea ◽  
C. Azcon-Aguilar
Keyword(s):  
Heavy Metals ◽  
Arbuscular Mycorrhizal Fungi ◽  
Medicago Sativa ◽  
Soil Pollution ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Shoot Biomass ◽  
Mycorrhizal Infection ◽  
Medicago Sativa L ◽  
Positive Effect

The influence of the mycorrhizal infection by G. mosseae (Nicol. et Gerd.) Gerd et Trappe on the growth of Medicago sativa L. plants under different level of soil pollution with heavy metals (Zn, Pb, Cd, Cu) and arsenicum was studied. It was established the strongly increase of the growth and shoot biomass of mycorrhizal plants. The positive effect of mycorrhization on the growth of alfalfa plants was greater in the soils with the higher level of soil pollution with heavy metals and arsenicum.

scholarly journals Citric acid and AMF Inoculation Combination Assisted phytoextraction of vanadium (V) by Medicago Sativa in V Mining Contaminated Soil

2021 ◽  
Author(s):  
Lang Qiu ◽  
Wenlong Gao ◽  
Zhigang Wang ◽  
Baoqin Li ◽  
Weimin Sun ◽  
...  
Keyword(s):  
Citric Acid ◽  
Medicago Sativa ◽  
Contaminated Soil ◽  
Mycorrhizal Fungi ◽  
Plant Biomass ◽  
Arbuscular Mycorrhizal ◽  
Dry Weight ◽  
Antioxidant Response ◽  
Mycorrhizal Colonization ◽  
Amf Inoculation

Abstract The use of citric acid (CA) chelator to facilitate metal bioavailability is a promising approach for phytoextraction of heavy metal contaminants. However, the role of CA chelator associated with arbuscular mycorrhizal fungi (AMF) inoculation on phytoextraction of vanadium (V) has not been studied. Therefore, in this study, a greenhouse pot experiment was conducted to evaluate the combined effect of CA chelator and AMF inoculation on plant growth and V phytoextraction in the V mining contaminated soil by Medicago sativa Linn. (M. sativa). The experiment was performed via CA (at 0, 5 and 10 mM kg− 1 soil levels) application alone or in combination with AMF inoculation. Plant biomass, root mycorrhizal colonization, P and V accumulation, antioxidant enzyme activity in plant, and soil chemical speciation of V were evaluated. Results depicted (1) a marked decline in plant biomass and root mycorrhizal colonization in 5- and 10-mM CA treatments which were accompanied by a significant increased V accumulation in M. sativa tissues. The effects could be attributed to the enhancement of bioavailable V by mainly transferring from the reducible to acid-soluble V fraction. (2) The presence of CA significantly enhanced P acquisition while the ratio of P/V concentration in plant shoots and roots decreased, owing to the increased V translocation from soil to plant. (3) In both CA treated soil, AMF symbiosis significantly improved dry weight (31.4–73.3%) and P content (37.3-122.5%) in shoot and root of M. sativa, and showed markedly contribution in reduction of malondialdehyde (MDA) content (12.8–16.2%) and higher antioxidants (SOD, POD and CAT) activities in the leaves, suggesting their combination could promote growth performance and stimulate antioxidant response alleviating V stress induced by CA chelator. (4) Taken together, 10 mM kg− 1 CA application and AMF inoculation combination exhibited higher amount of extracted V both in the shoot and root. Thus, citric acid-AMF-plant symbiosis provides a novel remediation strategy for in situ V phytoextraction by M. sativa in the contaminated soil.

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