Kee Zuan, Ali Tan
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Utilization of Yeasts in Promoting Plant Growth in Acidic Soil – A Review Rawichandran, Darshini; Kasim, Susilawati; Kee Zuan, Ali Tan; Effendi, Mohd Izuan; Raguraj, Sriharan
AGRIVITA Journal of Agricultural Science Vol 46, No 1 (2024)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v46i1.4241

Abstract

The ecosystem's biodiversity and soil microorganisms are impacted by the increasing use of synthetic fertilizers and pesticides, which causes soil acidity and limits the sustainability of agricultural output. The majority of microbial functions in acidic soil are inhibited because of decreasing nutrient cycling and organic matter decomposition as well as diminishing bacterial and fungal growth and reproduction.  In light of these growing concerns, the use of microorganisms as bio fertilizers is a recommended as alternative agricultural practice. Recent times have brought about a change in the paucity of study on yeasts and their ability to safely boost plant growth. Numerous works on bacteria have been made available. The primary objective of the study is to highlight the widespread application of yeasts in sustainable agricultural practices to promote plant growth in acidic soils. All of the advantages that yeasts provide may contribute to the growth of plants. Therefore, a thorough investigation into yeasts may be fruitful and offer a sustainable means of boosting agricultural yields that are necessary in acidic soil.
The multifunctional role of Pseudomonas spp. as plant growth-promoting rhizobacteria (PGPR): A sustainable approach to biofertilization and plant health Reza, Shah Ahmed; Han, Mingzhao; Uddin, Md Kamal; Kasim, Susilawati Binti; Kee Zuan, Ali Tan; Anwar, Farooq; Raguraj, Sriharan
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 23, No 1 (2026): June (in Progress)
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v23i1.92634

Abstract

Sustainable agriculture relies on maintaining healthy, ecologically balanced soil. The excessive use of chemical fertilizers has resulted in declining soil fertility, biodiversity loss, and structural degradation. In particular, the use of biofertilizers containing microbial inoculants that enhance plant growth and soil health offers a promising alternative by improving nutrient availability, suppressing pathogens, and restoring soil ecosystems. Studies have shown that rhizosphere microbes can enhance plant growth and control diseases by producing phytohormones and aiding nutrient uptake. Many bacterial genera can be used as biofertilizers, including nitrogen-fixers, phosphorus-solubilizers, potassium-solubilizers (K-solubilizers), and others. Among the diverse plant growth-promoting rhizobacteria (PGPR), species within the Pseudomonas genus have emerged as promising candidates due to their exceptional versatility and resilience. Pseudomonas spp. exhibits a wide array of plant growth-promoting traits, including atmospheric nitrogen fixation, solubilization of phosphorus and potassium, and the secretion of phytohormones such as indole-3-acetic acid (IAA) and gluconic acid. By systematically linking their metabolic traits to specific soil health and crop productivity outcomes, this review provides new insights into their potential application in sustainable and climate-resilient agriculture. Several Pseudomonas species have been extensively utilized as biofertilizers due to their multifunctional traits, adaptability to a wide range of soil environments, and capacity to enhance plant health under both biotic and abiotic stress conditions. The primary objective of this review is to present a comprehensive overview of biofertilizer mechanisms and the functional roles of Pseudomonas spp., including selected strains known to improve plant growth and soil fertility.