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A glycoprotein produced by the hyphae of mycorrhizal fungi that sequesters large amounts of carbon in the soil and improves soil structure by acting as a clumping agent.

[New Latin Glomālēs, former order name (now Glomerālēs) of the fungi producing the glycoprotein (from Glomus, type genus, from Latin glomus, glomer-, ball of yarn, in reference to the peridia of the genus, covered with numerous threadlike hyphae) + -in.]
References in periodicals archive ?
Glomalin, a newly discovered component of soil organic matter: Part I - Environmental significance Glomalin, a newly discovered component of soil organic matter : Part I--Environmental significance.
Glomalin sloughs off cementing material following the hyphal degradation that coat soil organic matter and soil particles, thereby, forming a protective surface layer against loss of water and nutrients from soil aggregates.
Nichols KA, Wright SF (2005) Comparison of glomalin and humic acid in eight native U.
Mycorrhizal fungi--beneficial fungi that grow in association with plant roots produce glomalin, a substance that glues microscopic clay and organic matter particles into aggregate clumps, stabilizing the soil and making it nice and crumbly.
glomalin and carbohydrate) on soil nutrient cycle and physical properties has been observed [10].
Citrus trees in China are mostly cultivated in poor soils where management of root and soil glomalin are of great significance.
In addition, a negative correlation between AM density and invasive plant (knapweed) cover was recorded (Lutgen & Rillig, 2004) by demonstrating that areas with high knapweed density generally had lower glomalin concentration and AM hyphal length compared with areas having no or less knapweed cover.
Glomalin is largely responsible for a soil's tilth, or crumb structure, and it's part of the soil's nutrient storehouse, too.
Pools of organic carbon such as glomalin produced by AM fungi may even exceed soil microbial biomass by a factor of 10-20 (Rillig et al.