Assessment of the dynamic growth and potassium solubilization capability of three novel bacteria

I. H. Bangun, Bunga Raya Ketaren, A. Munar, Perdinanta Sembiring, Nurhajijah Nurhajijah, Andri Abdi, Reyza Suwanto Sitorus
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Abstract

Abstract. Bangun IH, Ketaren BR, Munar A, Sembiring P, Nurhajijah, Abdi A, Sitorus RS. 2024. Assessment of the dynamic growth and potassium solubilization capability of three novel bacteria. Biodiversitas 25: 177-185. Clay minerals are essential components that play a crucial role in soil cation exchangeable capacity and optimal plant growth. These components, including potassium (K), have the ability to bind with mineral crystals in the soil. Several studies have shown that K-solubilizing bacteria can facilitate the solubility of potassium, leading to optimal availability. However, the use of bacteria as biofertilizers is still limited due to challenges related to survival and growth patterns. To address these challenges, it is important to monitor the growth of the microbes and enhance their selection process to achieve effective utilization. Therefore, this study aimed to determine the bacterial growth dynamics and potential of Burkholderia paludis IHB_01, Burkholderia cepacia IHB_02, and Paraburkholderia phymatum IHB_03 in enhancing soil cation availability on clay minerals. The results showed a common initial adaptation phase among the 3 bacterial strains, followed by distinct exponential growth patterns. Burkholderia cepacia IHB_02 had the longest exponential growth phase, showing efficient resource utilization and extended growth. The results of soil cation enhancement by these bacteria showed that there were no major changes in measured parameters, such as total K, CEC, pH, and organic carbon. Furthermore, the variation in K exchange, organic carbon, and Na exchange provided insights into their unique interactions in the soil. The non-significant impact on potassium-related parameters in this study could be attributed to the presence of antagonistic cation interactions.
评估三种新型细菌的动态生长和钾溶解能力
摘要Bangun IH, Ketaren BR, Munar A, Sembiring P, Nurhajijah, Abdi A, Sitorus RS.2024.三种新型细菌的动态生长和钾溶解能力评估。生物多样性》25:177-185。粘土矿物是对土壤阳离子交换能力和植物最佳生长起关键作用的重要成分。包括钾(K)在内的这些成分能够与土壤中的矿物晶体结合。一些研究表明,钾溶解细菌可以促进钾的溶解,从而使钾的供应达到最佳状态。然而,由于生存和生长模式方面的挑战,细菌作为生物肥料的使用仍然有限。为了应对这些挑战,必须监测微生物的生长情况,并加强微生物的选择过程,以实现有效利用。因此,本研究旨在确定伯克霍尔德氏菌(Burkholderia paludis IHB_01)、伯克霍尔德氏菌(Burkholderia cepacia IHB_02)和帕拉伯克霍尔德氏菌(Paraburkholderia phymatum IHB_03)在提高粘土矿物上土壤阳离子可用性方面的细菌生长动态和潜力。结果表明,3 种细菌菌株都有一个共同的初始适应阶段,随后出现了不同的指数增长模式。伯克霍尔德氏菌(Burkholderia cepacia)IHB_02的指数生长期最长,表现出高效的资源利用和扩展生长。这些细菌对土壤阳离子的增强结果表明,总 K、CEC、pH 值和有机碳等测量参数没有发生重大变化。此外,钾交换量、有机碳和鈉交换量的变化有助于了解它们在土壤中的独特相互作用。本研究中对钾相关参数的影响不显著,可能是因为存在拮抗阳离子相互作用。
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