Phosphorus mobilization and improvement of crop agronomic performances by a new white‐rot fungus Ceriporia lacerataHG2011

Abstract

BACKGROUND: Some soil microorganisms can mobilize unavailable phosphorus (P) in soils for plant use and increase P fertilizer efficiency. Thus, an abiotic P solubilization experiment and fungal incubation in solution and soil were conducted to investigate the mobilization of various P compounds by a new white-rot fungus Ceriporia lacerata HG2011. The crop agronomic performances were then evaluated in the winter barley-summer maize-winter wheat rotation field.RESULTS: Ceriporia lacerata HG2011 had a wide P mobilization spectrum and mobilized P by different mechanisms depending on P sources supplied in liquid culture. The chief mechanism employed by this fungus was the production of protons in mobilizing Ca 3 (PO 4 ) 2 , low-molecular-weight organic acids and other unknown substances in FePO 4 and AlPO 4 , phytase (an inducible enzyme in the presence of phytate) in phytate, and phosphatase in lecithin and ribonucleic acid, respectively. As a result of the large fungal biomass, P accumulated in the hypha should also be considered in the assessment of the fungal P mobilization, and not just only soluble inorganic P. As C. lacerata HG2011 colonized on and in the test soil, phosphatase and phytase activities were enhanced but pH decreased in the soil, leading to P mobilization. The application of this fungus mobilized soil P, increased crop P uptake and yields, and consecutively reduced P fertilizer use without yield sacrifices in the multiple crop rotation field. CONCLUSION: C. lacerata HG2011 showed a new use with respect to mobilizing soil P and reducing P fertilizer input in modern agriculture beyond medical purposes, environmental protection and biofuel production.

Fungi That Promote Plant Growth in the Rhizosphere Boost Crop Growth

“…Phosphorus (P) is an important macroelement that promotes plant growth. Fungus ( Ceriporia lacerata ) was reported by Sui, et al [ 64 ] to solubilize the phosphates by the activity of organic acid and phytase. In addition to this, Aspergillus awamori and Penicillium digitatum were also reported to solubilize phosphate [ 65 ].…”

Talaromyces purpurogenus Isolated from Rhizosphere Soil of Maize Has Efficient Organic Phosphate-Mineralizing and Plant Growth-Promoting Abilities

“…Phosphate-solubilizing fungi Penicillium guanacastense JP-NJ2 secretes phytase, which plays an important role in phytate mineralization [25]. White rot fungus, Ceriporia lacerata HG2011, secretes phytase when sodium phytate serves as the sole source of P in the culture broth, indicating that the enzyme is induced when the culture medium has low phosphatase activity [31]. Thus, extracellular phytase produced by T. purpurogenus can be the primary mechanism in organic phosphate mobilization.…”

Growth enhancement, metabolic profile improvement, and DXR and TPS2 gene expression changes in Thymus vulgaris L. by cyanobacterial inoculation

“…More environmentally friendly alternatives, such as biofertilizers, can reduce the hazards associated with chemical fertilizers and thus protect the soil environment and human health. 1,2 There are various sources of biofertilizers and biostimulants, including biomass and extracts of cyanobacteria and eukaryotic microalgae. 3,4 Growth induction and gene expression by cyanobacteria are important topics of scientific research, as they have potential applications in biotechnology, bioenergy, and environmental remediation.…”

“…Chemical fertilizers are normally used to increase plant secondary metabolites but their improper use can affect the ecosystem and negatively affect soil microorganisms. More environmentally friendly alternatives, such as biofertilizers, can reduce the hazards associated with chemical fertilizers and thus protect the soil environment and human health 1,2 …”