MINERALOGICAL CHANGES IN CLAY-SIZED PHLOGOPITE AND MUSCOVITE AS AFFECTED BY ENDOPHYTE FUNGI-TALL FESCUE SYMBIOSIS

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KHAYAMIM F.; KHADEMI HOSSEIN; SALEHI MOHAMMAD HOSSEIN

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Journal: Journal of Water and Soil Year:2010 | Volume:24 | Issue:3 Page(s): 545-556

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Information Journal Paper

Title

MINERALOGICAL CHANGES IN CLAY-SIZED PHLOGOPITE AND MUSCOVITE AS AFFECTED BY ENDOPHYTE FUNGI-TALL FESCUE SYMBIOSIS

Author(s)

KHAYAMIM F. | KHADEMI HOSSEIN | SALEHI MOHAMMAD HOSSEIN | Issue Writer Certificate

Keywords

ENDOPHYTE FUNGIQ3

PHLOGOPITEQ2

MUSCOVITEQ2

VERMICULITEQ1

MINERAL TRANSFORMATIONQ3

Abstract

The association of Neotyphodium spp. endophytes and cool-season grasses, particularly tall fescue (Festuca arundinacea, Schreb), represents a widespread type of symbiosis in nature. Numerous studies have been conducted on the positive effects of this symbiosis on plant resistance to different stresses but its role on potassium uptake and the transformation of K-bearing minerals is not known. The objective of this research was to investigate the effect of ENDOPHYTE FUNGI-tall fescue symbiosis on the transformation of clay-sized micaceous minerals. A pot experiment was carried out in a completely randomized design with factorial combinations and three replicates under green house conditions. The growth medium was a mixture of quartz sand (as the filling material) and PHLOGOPITE or MUSCOVITE. Tall fescue 75B genotype either infected or non-infected by the natural endophyte Neotyphodium was used. Pots were irrigated with distilled water and complete or K-free nutrient solutions during a period of 140 days. At the end of the experiment, shoots and roots were harvested, dry ashed and their K concentration was determined using a flame photometer. The clay-sized particles in each pot were mineralogically studied using an X-ray diffractometer. The results showed the vermiculitization of PHLOGOPITE under both nutrient solutions conditions, but with a much higher rate in pots treated with K-free nutrient solution. In addition to VERMICULITE, a low quantity of smectite and chlorite was detected as newly formed minerals in PHLOGOPITE amended pots. Also, a very low intensity peak of VERMICULITE was observed in XRD patterns of MUSCOVITE treated media. Under the K-free nutrient solution and in PHLOGOPITE amended treatments, the 1.4/1.0 nm peak ratio for endophyte infected plants was 4 times greater than that under non-infected plants.Such a significant difference in PHLOGOPITE vermiculitization is attributed to endophyte symbiosis and its positive effects on the type and quantity of tall fescue roots secretions. A significant decrease in pH values under the rhizosphere of infected plants further confirms this hypothesis.

Cites

VERMICULITIZATION OF MICACEOUS MINERALS AS AFFECTED BY THE RATE OF K UPTAKE BY ALFALFA

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APA: Copy

KHAYAMIM, F., KHADEMI, HOSSEIN, & SALEHI, MOHAMMAD HOSSEIN. (2010). MINERALOGICAL CHANGES IN CLAY-SIZED PHLOGOPITE AND MUSCOVITE AS AFFECTED BY ENDOPHYTE FUNGI-TALL FESCUE SYMBIOSIS. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), 24(3), 545-556. SID. https://sid.ir/paper/141520/en

Vancouver: Copy

KHAYAMIM F., KHADEMI HOSSEIN, SALEHI MOHAMMAD HOSSEIN. MINERALOGICAL CHANGES IN CLAY-SIZED PHLOGOPITE AND MUSCOVITE AS AFFECTED BY ENDOPHYTE FUNGI-TALL FESCUE SYMBIOSIS. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY)[Internet]. 2010;24(3):545-556. Available from: https://sid.ir/paper/141520/en

IEEE: Copy

F. KHAYAMIM, HOSSEIN KHADEMI, and MOHAMMAD HOSSEIN SALEHI, “MINERALOGICAL CHANGES IN CLAY-SIZED PHLOGOPITE AND MUSCOVITE AS AFFECTED BY ENDOPHYTE FUNGI-TALL FESCUE SYMBIOSIS,” JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), vol. 24, no. 3, pp. 545–556, 2010, [Online]. Available: https://sid.ir/paper/141520/en

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