Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2023 Apr;68(2):219-229.
doi: 10.1007/s12223-022-01004-0. Epub 2022 Oct 7.

Phosphate solubilization and indole-3-acetic acid (IAA) produced by Colletotrichum gloeosporioides and Aspergillus fumigatus strains isolated from the rhizosphere of Dillenia indica L

Vijay Kumar  1 , I B Prasher  2
Affiliations

Phosphate solubilization and indole-3-acetic acid (IAA) produced by Colletotrichum gloeosporioides and Aspergillus fumigatus strains isolated from the rhizosphere of Dillenia indica L

Vijay Kumar et al. Folia Microbiol (Praha). 2023 Apr.

Abstract

Plants form associations with different microbes; some promote their growth and protect from biotic and abiotic stresses in different ways. However, the biological role of fungi associated with the rhizosphere of medicinal plants is not well explored. In the present study, Colletotrichum gloeosporioides, and Aspergillus fumigatus isolated from the rhizosphere of Dillenia indica were screened for their phosphate solubilization and indole-3-acetic acid (IAA) production potential. The selected fungal strains were identified by macroscopic, microscopic, and molecular characteristics. Phosphate solubilization was qualitatively and quantitatively evaluated using Pikovskaya's (PVK) agar and PVK broth medium using different substrates such as AlPO4, Ca3(PO4)2, and FePO4. Colletotrichum gloeosporioides and Aspergillus fumigatus with respect to the phosphate source showed solubilization index (SI) of 1.7 ± 0.03 and 2.1 ± 0.04, and solubilized phosphate up to 138.8 ± 0.058 µg/mL and 121.6 ± 0.062 µg/mL. These fungal strains are also good producers of IAA and significantly enhance the growth of Vigna radiata and Cicer arietinum seedlings. This is the first report on A. fumigatus and C. gloeosporioides from the rhizosphere of Dillenia indica and their phosphate solubilization and IAA production ability.

Keywords: Crop production; Growth promotion; Indole acetic acid; Phosphate solubilization; Rhizosphere.

PubMed Disclaimer

References

    1. Abdel-Azeem AM, Abdel-Azeem MA, Abdul-Hadi SY, Darwish AG (2019) Aspergillus: biodiversity, ecological significances, and industrial applications. In Yadav A, Mishra S, Singh S, Gupta A (eds) Recent advancement in white biotechnology through fungi. Springer, Cham, p 121–179. https://doi.org/10.1007/978-3-030-10480-1_4
    1. Abdel-Azeem AM, Salem FM, Abdel-Azeem MA, Nafady NA, Mohesien MT, Soliman EA (2016) Biodiversity of the Genus Aspergillus in different habitats. In: Gupta VK (ed) New and future developments in microbial biotechnology and bioengineering: Aspergillus system properties and applications. Elsevier, Amsterdam, p 23–28. https://doi.org/10.1016/B978-0-444-63505-1.00001-4
    1. Adhikari P, Pandey A (2019) Phosphate solubilization potential of endophytic fungi isolated from Taxus wallichiana Zucc. roots. Rhizosphere 9:2–9. https://doi.org/10.1016/j.rhisph.2018.11.002 - DOI
    1. Ahmad F, Ahmad I, Khan MS (2005) Indole acetic acid production by the indigenous isolates of Azotobacter and fluorescent Pseudomonas in the presence and absence of tryptophan. Turk J Biol 29(1):29–34
    1. Aktar MW, Sengupta D, Chowdhury A (2009) Impact of pesticides use in agriculture: their benefits and hazards. Interdiscip Toxicol 2(1):1–12. https://doi.org/10.2478/v10102-009-0001-7 - DOI - PubMed - PMC

Supplementary concepts

LinkOut - more resources