ORIGINAL RESEARCH article
Front. Ind. Microbiol.
Sec. Agriculture
Volume 3 - 2025 | doi: 10.3389/finmi.2025.1594031
This article is part of the Research TopicMicrobial-based Inoculants for Agriculture: Production and Improvement of Commercial FormulationsView all 5 articles
INDOLE 3-ACETIC ACID PRODUCTION AND GROWTH PROMOTING ABILITY OF DESERTIFILUM SP. PSL17 ON VIGNA RADIATA
Provisionally accepted
- Presidency College, Chennai, India
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Cyanobacteria are widely distributed across numerous ecosystems, that include aquatic, terrestrial as well as extreme habitats such as the polar regions, hypersaline waters, hot springs and deserts. They are known to play a key role in bringing oxygen on the earth. The present investigation reports the potential of Desertifilum sp. PSL17, a freshwater blue-green algae, to produce indole 3-acetic acid (IAA) and ammonia, and also trigger efficient germination of rice and promote the growth of green gram (Vigna radiata). Desertifilum sp. PSL17 was found to produce significant amounts of IAA (87.3µg/mL) under optimal growth conditions. Tryptophan (trp) induction, promoting a 2.3-fold increase in IAA production, signifies trp mediated IAA production in Desertifilum sp. PSL17. Rice seeds exhibited remarkable germination ability in presence of the alga in comparison to untreated seeds. When co-cultivated with green gram (Vigna radiata), it exhibited a profound impact on plant growth promotion, resulting in increased root length, shoot length, and biomass production compared to the control. The substantial production of IAA and ammonia by Desertifilum sp. PSL17 play a pivotal role in plant growth promotion. Our findings suggest that this freshwater Desertifilum sp. PSL17 has enormous prospective as a biofertilizer for promoting sustainable agriculture practices, particularly for green gram cultivation.
Keywords: Desertifilum sp. PSL17, Indole 3-acetic acid, Ammonia, plant growth promotion, Vigna radiata, Biofertilizer, sustainable agriculture
Received: 15 Mar 2025; Accepted: 02 May 2025.
Copyright: © 2025 Palraj, Subramani, Zimik and Paranthaman. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Sripriya Paranthaman, Presidency College, Chennai, India
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