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Muhsin, Tawfik M.; Zwiazek, Janusz J.

doi:10.1023/a:1014435407735

Cited by 77 publications

(16 citation statements)

References 34 publications

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“…Similarly, we observed little effect of mycorrhizal fungi on B root and shoot concentrations suggesting that B uptake were likely determined by other factors than aquaporins. Similarly to earlier studies (Muhsin and Zwiazek 2002a;Bois et al 2006;Nguyen et al 2006), mycorrhizal associations reduced shoot Na concentrations in jack pine seedlings. Although the exact mechanisms of this response are not known, it may be partly due to Na sequestration by the fungal hyphae.…”

Section: Discussionsupporting

confidence: 76%

“…Mycorrhizas can alleviate metal toxicity (Jones and Hutchinson 1988;Jentschke and Goldbold 2000) likely through the sorption of metals to fungal tissues and intracellular uptake and detoxification in fungal vacuoles (Denny and Wilkins 1987;Hartley et al 1997). We have also demonstrated (Muhsin and Zwiazek 2002a;Nguyen et al 2006) that mycorrhizal associations alleviate NaCl injury in plants by reducing shoot Na concentrations.…”

Section: Introductionmentioning

confidence: 55%

“…bringing the dry weights down to a level similar to those of other inoculation groups. Although growth reductions are commonly observed in NaCl-treated plants (Apostol et al 2002;Franklin and Zwiazek 2004), NaCl concentrations as high as 60 mM have also been reported to have little or no effect on shoot and root dry weights in non-mycorrhizal and mycorrhizal Pinus banksiana (Bois et al 2006) and Picea glauca (Muhsin and Zwiazek 2002a;Bois et al 2006). Similarly to untreated plants, the effects of mycorrhizal associations on growth of plants treated with NaCl vary between plant species Yi et al 2008).…”

Section: Discussionmentioning

confidence: 99%

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Responses of mycorrhizal jack pine (Pinus banksiana) seedlings to NaCl and boron

Calvo-Polanco

Zwiazek

Jones

et al. 2008

Trees

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In earlier studies, we established that mycorrhizal associations protect plants against salt stress. However, elevated boron levels are often present in saline soils and little is known about the effects of boron on salt resistance of mycorrhizal plants. In the present study, we inoculated jack pine (Pinus banksiana) seedlings with Hebeloma sp., Suillus tomentosus and Wilcoxina mikolae var. mikolae to study the effects of mycorrhizal associations on seedling responses to boron and salt. Seedlings were grown in the greenhouse and subjected to 60 mM NaCl, 2 mM H 3 BO 3 or 60 mM NaCl + 2 mM H 3 BO 3 treatments for 4 weeks. Dry weights, shoot:root ratios and chlorophyll concentrations were higher in inoculated seedlings for all treatments compared with the noninoculated plants. When applied with NaCl, B aggravated needle necrosis while reducing Cl concentrations in shoots of non-inoculated plants. Plants treated with 2 mM H 3 BO 3 + 60 mM NaCl had similar concentrations of Na and B to those that were treated separately with 60 mM NaCl and 2 mM H 3 BO 3 . Plants inoculated with mycorrhizal fungi had lower shoot Na concentrations compared with non-inoculated seedlings, but showed relatively little impact from elevated B concentrations.

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Section: Discussionsupporting

confidence: 76%

Section: Introductionmentioning

confidence: 55%

Section: Discussionmentioning

confidence: 99%

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Responses of mycorrhizal jack pine (Pinus banksiana) seedlings to NaCl and boron

Calvo-Polanco

Zwiazek

Jones

et al. 2008

Trees

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“…As shown in this and in an earlier study (Calvo-Polanco et al 2008b), American elm roots accumulated less than 3 mg g -1 DW Na. This compares with 6-17 mg g -1 DW Na reported for Picea glauca (Muhsin and Zwiazek 2002a;Franklin and Zwiazek 2004), Pinus banksiana (Apostol et al 2004), Cornus stolonifera (Renault et al 2001), and P. tremuloides (Yi et al 2008). Consequently, most of the Na in this study was deposited in the leaves (Fig.…”

Section: Discussionsupporting

confidence: 62%

“…It has been demonstrated that inoculation of plants with ectomycorrhizal fungi increases their salt tolerance (Muhsin and Zwiazek 2002a;Bois et al 2005;Nguyen et al 2006), partly by reducing Na uptake. However, the mechanisms of the reduction remain unclear.…”

Section: Introductionmentioning

confidence: 99%

Effects of pH on NaCl tolerance of American elm (Ulmus americana) seedlings inoculated with Hebeloma crustuliniforme and Laccaria bicolor

2009

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In the present study, we investigated the effects of pH treatments on NaCl tolerance in mycorrhizal and non-mycorrhizal American elm. American elm (Ulmus americana) seedlings were inoculated with Hebeloma crustuliniforme, Laccaria bicolor or with both mycorrhizal fungi and subsequently subjected to different pH solutions (pH 3, 6 and 9) containing 0 mM (control) and 60 mM NaCl for 4 weeks. Inoculation with the mycorrhizal fungi did not have a large effect on seedling dry weights when the pH and NaCl treatments were considered independently. However, when the inoculated seedlings were treated with 60 mM NaCl at pH 3 or 6, shoot to root ratios and root hydraulic conductivity were higher compared with non-inoculated plants, likely reflecting changes in seedling water flow properties. At pH 6, transpiration rates were about twofold lower in non-inoculated plants treated with NaCl compared with non-treated controls. For NaCl-treated H. crustuliniforme-and L. bicolor-inoculated plants, the greatest reduction of transpiration rates was at pH 9. Treatment with 60 mM NaCl reduced leaf chlorophyll concentrations more in non-inoculated compared with inoculated plants, with the greatest, twofold, decrease occurring at pH 6. At pH 3, root Na concentrations were higher in inoculated than noninoculated seedlings; however, there was no effect of inoculation on root Na concentrations at pH 6 and 9. Contrary to the roots, the leaves of inoculated plants had lower Na concentrations at pH 6 and 9, but not at pH 3. The results point to an interaction between ECM fungi and root zone pH for salt tolerance of American elm.

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Physiology of Ectomycorrhiza (ECM)

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Cited by 77 publications

References 34 publications

Responses of mycorrhizal jack pine (Pinus banksiana) seedlings to NaCl and boron

Responses of mycorrhizal jack pine (Pinus banksiana) seedlings to NaCl and boron

Effects of pH on NaCl tolerance of American elm (Ulmus americana) seedlings inoculated with Hebeloma crustuliniforme and Laccaria bicolor

Physiology of Ectomycorrhiza (ECM)

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