Glomalin-related soil protein contains non-mycorrhizal-related heat-stable proteins, lipids and humic materials

Assessment of the glomalins content in the soil under winter wheat in different crop production systems

“…Hence, GRSP became more reliable in assessing the sustainability of soil aggregates as their values may reflect actual content of glomalins in the soil (Wright et al 1996). In addition, high concentrations of GRSP and EEG indicate that easily-extractable glomalins fractions can clearly explain the relationship between the glomalins content and agricultural practices (Gillespie et al 2011).…”

“…Glomalins occur widely in the soil and constitute a storage for carbon, the source of which is atmospheric CO 2 (Jamiołkowska et al 2017). The ability to produce and store glomalins in fungal filaments is characteristic only for arbuscular mycorrhizal fungi belonging to the order Glomerales, which includes the family Glomeraceae with the genus Glomus (Gillespie et al 2011). In the natural environment, there is a large diversity of the AMF fungi (Wright et al 1996).…”

Exogenous easily extractable glomalin-related soil protein promotes soil aggregation, relevant soil enzyme activities and plant growth in trifoliate orange

“…These results might have confirmed our hyphothesis that EE-GRSP might serve as a humic-like substance to exert positive effect on plant growth, though depending on the strength of EE-GRSP (Table 2, Figure 1). Quantitative solid-state 13 C DPMAS NMR (direct-polarization magic angle spinning nuclear magnetic resonance) demonstrated that the NMR spectra of glomalin and humic acid closely resembled (Schindler et al 2007), while synchrotron-based X-ray absorption near-edge structure (XANES) spectroscopy and pyrolysis field-ionization mass spectrometry (Py-FIMS) did characterize that GRSP contained non-mycorrhizal-related heat-stable protein and humic materials (Gillespie et al 2011). …”

Effect of different agricultural management practices on soil biological parameters including glomalin fraction

“…These techniques of cultivation are meant to interfere with the soil structure as little as possible, not to cause the tearing up the trunks of mycorrhizal fungi. An actively growing mycelium can freely penetrate soil, that is the presence of the glomalin can be observed throughout the whole soil profile (Gillespie et al 2011). The content of glomalin in soil was correlated with its biological activity and physical properties (Table 3).…”