(in a mesocosm experiment: among different treatments but on the same soil )
According to some authors, yes.
See
Wright, S.F., Green V.S., Cavigelli, M.A. 2007. Glomalin in aggregate size classes from three different farming systems. SOIL TILL RES. 94: 546–549.
According to some authors, yes.
See
Wright, S.F., Green V.S., Cavigelli, M.A. 2007. Glomalin in aggregate size classes from three different farming systems. SOIL TILL RES. 94: 546–549.
Yes I agree with Dr Hani , glmalin concentration and soil aggregate stability go together , besides strong indication of abundance of AM-colonization . Please find a nice PDF for further reading on glomalin .
As I understand there are different species of mycorrhizae. Will all the species produce glomalin?Is it the function of only one species?Mycorrhizae species have other roles too.Questions raised by Dr.Hani are pertnent and important.
The role of the glomalin appears to be protective as a sheathing function around the mycorrhizal hyphae. It is hydrophobic and adhesive in its nature both having protection actions. The interaction of a plant its mycorrhizal symbiont can give different results and some combinations give more glomalin production. As plant cover and roots are increased the prevalence and diversity of mycorrhizal fungi and their products increase similarly. Because of its resistance to decay and the role it plays in soil aggregation the role of glomalin may be the conversion of labile carbon in to resistant carbon. Much researches show soil aggregation reduces decay and aggregation dissolution increases it. As accumulation of Carbon and Nitrogen can be a result of Carbon and Nitrogen being produced faster than the decay rate this can be one explanation which correlated with higher carbon and nitrogen sequestration in Rodale Farming Systems Trials in covered rotated crop systems compared to monocultures without rotation and cover crops. Mycorrhizal result in more partition of Carbon resources into the rooting zones mycorrhizosphere and the aggregation of the soil from the biogeochemical reaction causes their agglomeration in more persistent manner. Net result is more Carbon and Nitrogen resource from the air repatriated into the soil and soil transformation reduces its decay rate both of which favor a Carbon and Nitrogen sequestration positive for counteracting greenhouse gas enrichment.
Dr.Hepperly, very good explanation of the function of glomalin in aggregation and carbon and nitrogen conservation and sequestration in soil.
Let me raise another issue , do you feel glomalin contains only the proteins of AMF-origin ? If so , then where does non-AMF protein go?
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