scholarly journals Detection of phosphate transporter genes from arbuscular mycorrhizal fungi in mature tree roots under experimental soil pH manipulation

Symbiosis ◽  
2016 ◽  
Vol 72 (2) ◽  
pp. 123-133 ◽  
Author(s):  
Sarah R. Carrino-Kyker ◽  
Laurel A. Kluber ◽  
Kaitlin P. Coyle ◽  
David J. Burke
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Soil Ph ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Phosphate Transporter ◽  
Mature Tree ◽  
Tree Roots ◽  
Phosphate Transporter Genes ◽  
Experimental Soil

scholarly journals Morpho-Physiological Responses of Abelmoschus esculentus (L.) Moench to Arbuscular Mycorrhizal Fungi Inoculation under Drought Stress

2019 ◽  
pp. 1-8
Author(s):  
Okon, Okon Godwin ◽  
Uyon, Peter Paul ◽  
Nyahette, Enobong Monday
Keyword(s):  
Drought Stress ◽  
Arbuscular Mycorrhizal Fungi ◽  
Photosynthetic Pigments ◽  
Mycorrhizal Fungi ◽  
Biomass Yield ◽  
Plant Biomass ◽  
Growth Parameters ◽  
Arbuscular Mycorrhizal ◽  
Experimental Plant ◽  
Experimental Soil

Aims: To assess the potential impacts of arbuscular mycorrhizal fungi (AMF) (G. geosporum) inoculation on the survival of A. esculentus under drought stress. Study Design: This experiment was set up in a completely randomized design (CRD) with all treatments replicated thrice. This gave a total of 7 treatments, 21 replicates. Place and Duration of Study: The experimental soil used for this study was collected from the Botanical Garden of the Department of Biological Sciences, Ritman University (Latitude 5º11’44ºN and Longitude 7º42’12ºE), Akwa Ibom State, Nigeria. All analysis was carried out in Soil Science Laboratory and Botany Laboratory, Akwa Ibom State University, between January and march 2019. Methodology: Soil samples were analyzed following the standard procedures outlined for wet acid digestions. Growth parameters were determined using standard methods. At Leaf chlorophyll meter was employed in the assessment of the photosynthetic pigments of the experimental plant. Biomass yield were calculated using standard formulas. Results: The physicochemical analysis of the experimental soil used in this study revealed the physical and chemical properties of the soil; pH (6.12), EC (0.06dS/m), organic matter (2.90%), Av. P (44.62 mg/kg) and textural class of the soil was described as loamy sandy soil. Shoot length, petiole length, internode length, number of leaves and leaf area as well as the total photosynthetic pigments (TPP) contents of A. esculentus were significantly (P =.05) reduced (from 38.77±3.01 mg/kg to 29.83±1.89 mg/kg) by drought stress. There was also significantly (P = .05) reduction in N, P, K, Ca and Mg composition of A. esculentus as well as its biomass yield. However, the inoculation of A. esculentus roots with AMF (G. geosporum) in this study through several morphological and physiological processes exhibited remarkable improvement in growth morphology, total photosynthetic pigments, macronutrients composition as well as biomass yield. Conclusion: The results of this work have shown that AMF can enhance the ability of A. esculentus to resist drought stress possibly through some morphological and physiological changes which improves water and nutrients uptake.

scholarly journals Transfer of Nickel from Polluted Soil to Pisum sativum L. and Raphanus sativus L. under Composted Green Amendment and Native Soil Microbes

2017 ◽  
Vol 63 (2) ◽  
pp. 52-66 ◽  
Author(s):  
Nivien Allam Nafady ◽  
Mohamed Bahy-El-Din Mazen ◽  
Mohamed Mahmoud Mohamed Ahmed ◽  
Omaima Abdel Monsef
Keyword(s):  
Pisum Sativum ◽  
Arbuscular Mycorrhizal Fungi ◽  
Soil Ph ◽  
Mycorrhizal Fungi ◽  
Raphanus Sativus ◽  
Soil Microbes ◽  
Arbuscular Mycorrhizal ◽  
Polluted Soil ◽  
Residual Effects ◽  
Native Soil

Abstract The effect of compost, inoculation with native soil microbes and their residual effects on bioavailability of nickel by peas (Pisum sativum L.) and radish (Raphanus sativus L.) grown on polluted soil were investigated in pot experiments. Plants were amendment with different compost levels (0, 0.2, 0.4, 0.6% of soil dry weight) and inoculated with different native soil microbes (4 fungal species, one bacterial species, 4 species of arbuscular mycorrhizal fungi) isolated from the polluted soil under study. Significant increases in the biomass of pea and radish plants were observed as a result of amendment application and their residual effects. The mycorrhizal dependency (MD) of pea plants was lower than of radish plants. The highest reductions of Ni levels in both plants were observed by the simultaneous applications of compost with microbes or mycorrhizal fungi to polluted soils. Soil pH increased significantly (p < 0.05) as a result of applying native microbes especially with arbuscular mycorrhizal fungi (AMF) alone or combined with compost. The DTPA extractability of soil Ni was significantly decreased with increasing soil pH (p < 0.05). The minimum transfer factor of Ni from polluted soil were 0.067 and 0.089 for pea and radish plants, respectively which were attained as a result of applying compost (0.6% of soil weight) inoculated with mycorrhizal fungi. From the results, we can conclude that the use of compost and native soil microbes as a soil remediate could be an effective strategy for soil remediation.

A method for assessing arbuscular mycorrhizal fungi group distribution in tree roots by intergenic transcribed sequence variation

2006 ◽  
Vol 290 (1-2) ◽  
pp. 259-268 ◽  
Author(s):  
Mervyn Shepherd ◽  
Linh Nguyen ◽  
Megan E. Jones ◽  
J. Doland Nichols ◽  
F. Lynn Carpenter
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Sequence Variation ◽  
Arbuscular Mycorrhizal ◽  
Tree Roots ◽  
Group Distribution

scholarly journals Interaction Between Root Exudates of the Poisonous Plant Stellera chamaejasme L. and Arbuscular Mycorrhizal Fungi on the Growth of Leymus Chinensis (Trin.) Tzvel

2020 ◽  
Vol 8 (3) ◽  
pp. 364
Author(s):  
Xinrui Zhu ◽  
Xiaote Li ◽  
Fu Xing ◽  
Chen Chen ◽  
Guohui Huang ◽  
...  
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Total Nitrogen ◽  
Soil Ph ◽  
Root Exudates ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Leymus Chinensis ◽  
Poisonous Plant ◽  
Poisonous Plants ◽  
Stellera Chamaejasme

The growth of a large number of poisonous plants is an indicator of grassland degradation. Releasing allelochemicals through root exudates is one of the strategies with which poisonous plants affect neighboring plants in nature. Arbuscular mycorrhizal fungi (AMF) can form a mutualistic symbiosis with most of the higher plants. However, the manner of interaction between root exudates of poisonous plants and AMF on neighboring herbage in grasslands remains poorly understood. Stellera chamaejasme L., a common poisonous plant with approved allelopathy, is widely distributed with the dominant grass of Leymus chinensis in the degradeds of Northern China. In this study, we investigated the addition of S. chamaejasme root exudates (SRE), the inoculation of AMF, and their interaction on the growth and tissue nitrogen contents of L. chinensis, the characteristics of rhizosphere AMF, and soil physicochemical properties. Results showed that SRE had significant effects on ramet number, aboveground biomass, and total nitrogen of L. chinensis in a concentration dependent manner. Additionally, SRE had a significant negative effect on the rate of mycorrhiza infection and spore density of the AMF. Meanwhile, the addition of SRE significantly affected soil pH, electrical conductivity, available nitrogen (AN), available phosphorus (AP), total nitrogen (TN), and total carbon (TC) contents; while neither inoculation of AMF itself nor the interaction of AMF with SRE significantly affected the growth of L. chinensis. The interaction between AMF and SRE dramatically changed the pH, AP, and TC of rhizosphere soil. Therefore, we suggested SRE of S. chamaejasme affected the growth of L. chinensis by altering soil pH and nutrient availability. AMF could change the effect of SRE on soil nutrients and have the potential to regulate the allelopathic effects of S. chamaejasme and the interspecific interaction between the two plant species. We have provided new evidence for the allelopathic mechanism of S. chamaejasme and the regulation effects of AMF on the interspecific relationship between poisonous plants and neighboring plants. Our findings reveal the complex interplay between the root exudates of poisonous plants and rhizosphere AMF in regulating population growth and dynamics of neighboring plants in degraded grassland ecosystems.

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