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Halotolerant Rhizobacteria Isolated from Salinity-Impacted Marginal Soils: Characterization and Potential for Plant Growth Promotion

Caraka Tani: Journal of Sustainable Agriculture · Vol. 40 No. 4 (2025) · hlm. 510–526

DOI
10.20961/carakatani.v40i4.107138
ISSN
2599-2570, 2613-9456
Terbit
2025-09-30
Penerbit
Universitas Sebelas Maret
Bahasa
eng
Lisensi
creativecommons.org/licenses/by-nc/4.0

Abstrak

Soil salinity is a significant constraint on crop productivity, particularly in marginal lands, and sustainable biological approaches are needed to mitigate its impact. Plant growth-promoting rhizobacteria (PGPR) with halotolerance represent promising candidates for enhancing plant resilience under saline stress. This study aimed to isolate halotolerant PGPR from saline-impacted soils in Pekalongan, Indonesia, and evaluate their potential to improve plant growth under salinity stress. Five bacterial isolates (WN-01 to WN-05) were successfully obtained. The isolates displayed multiple PGPR traits, including nitrogen fixation, phosphate solubilization, indole-3-acetic acid (IAA) synthesis, siderophore release, cellulase activity, 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity, exopolysaccharide production, and tolerance to salinity up to 9% NaCl. Molecular identification confirmed the isolates as Bacillus subtilis (WN-01), Priestia megaterium (WN-02), Pseudomonas segetis (WN-03), Bacillus pumilus (WN-04), and Bacillus cereus (WN-05). Compatibility analysis indicated their potential to be formulated as a consortium bioinoculant. In vivo pot experiments using sweet maize (Zea mays saccharata var. Bonanza F1) under saline conditions (4 dS m-1) showed that consortium application, especially at 10⁸ CFU ml-1, significantly enhanced plant height, leaf surface area, and chlorophyll content. Moreover, the total microbial population in soil increased proportionally with inoculum density, with the highest values recorded in the 10⁸ CFU ml-1 treatment. These findings demonstrate that local halotolerant PGPR have strong potential as bioinoculants to support crop growth and soil health in saline-impacted marginal lands.

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  • Tanjungpura University
  • Universitas Gadjah Mada
  • Indonesia University of Education
  • Universitas Halu Oleo
  • Sebelas Maret University
  • Afiliasi tidak diketahui
  • Organisasi berbeda
  • Organisasi sama
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Rekan penulisOrganisasiArtikel bersama
Hanindyo AdiAfiliasi tidak diketahui3
Siti SumarmiAfiliasi tidak diketahui3
Budi Setiadi DaryonoAfiliasi tidak diketahui3
Suwarno HadisusantoUniversitas Gadjah Mada2
Abdulrahman Saad AldawoodAfiliasi tidak diketahui2
Wahyu WilopoAfiliasi tidak diketahui2
Hari PurwantoAfiliasi tidak diketahui2
R.C. Hidayat SoesilohadiAfiliasi tidak diketahui2
Lilik HasanahIndonesia University of Education2
Mursal MursalAfiliasi tidak diketahui2
Satria Zulkarnaen BisriAfiliasi tidak diketahui2
La Ode Ali Imran AhmadUniversitas Halu Oleo1
Amrin FarzanAfiliasi tidak diketahui1
Wanti FitriantiAfiliasi tidak diketahui1
Wanti FitriantiTanjungpura University1
Marisi AritonangTanjungpura University1
Sukirno SukirnoAfiliasi tidak diketahui1
Sri KasmiyatiAfiliasi tidak diketahui1
Otilda Fátima AraújoAfiliasi tidak diketahui1
Elizabeth Betty Elok KristianiAfiliasi tidak diketahui1
Waluyo WaluyoAfiliasi tidak diketahui1
Afriana SariAfiliasi tidak diketahui1
Rostika FloraAfiliasi tidak diketahui1
Roni Zakaria ShaputraAfiliasi tidak diketahui1
Margareth Tutut Maharani PrakosoAfiliasi tidak diketahui1
Sudaryatno SudaryatnoAfiliasi tidak diketahui1
Ketut Arte WidaneAfiliasi tidak diketahui1
Annisaa WidyasariAfiliasi tidak diketahui1
Marta PramuditaAfiliasi tidak diketahui1
Mohammad NasikinAfiliasi tidak diketahui1
Slamet SlametSebelas Maret University1
Athiek Sri RedjekiAfiliasi tidak diketahui1
Yeni Nur PrilanitaAfiliasi tidak diketahui1
Hastini Ma'rufahAfiliasi tidak diketahui1
L. Hartanto NugrohoAfiliasi tidak diketahui1
Ign. SudaryadiAfiliasi tidak diketahui1

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Sumber metadata: OAI-PMH (metadata jurnal) http://jurnal.uns.ac.id/carakatani/oai, pertama di-harvest 8 Nov 2026, terakhir terlihat 8 Nov 2026.
Metadata asli (oai_dc) 
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	<dc:title xml:lang="en-US">Halotolerant Rhizobacteria Isolated from Salinity-Impacted Marginal Soils: Characterization and Potential for Plant Growth Promotion</dc:title>
	<dc:creator>Putri, Syarafina Ratna</dc:creator>
	<dc:creator>Nugroho, Laurentius Hartanto</dc:creator>
	<dc:creator>Sukirno, Sukirno</dc:creator>
	<dc:creator>Retnaningrum, Endah</dc:creator>
	<dc:subject xml:lang="en-US">Agricultural Microbiology; Plant Growth-Promoting Rhizobacteria; Soil Biology; Sustainable Agriculture; Plant Physiology</dc:subject>
	<dc:subject xml:lang="en-US">ACC deaminase; bioinoculant; halotolerant rhizobacteria; phosphate solubilization; salinity stress</dc:subject>
	<dc:description xml:lang="en-US">Soil salinity is a significant constraint on crop productivity, particularly in marginal lands, and sustainable biological approaches are needed to mitigate its impact. Plant growth-promoting rhizobacteria (PGPR) with halotolerance represent promising candidates for enhancing plant resilience under saline stress. This study aimed to isolate halotolerant PGPR from saline-impacted soils in Pekalongan, Indonesia, and evaluate their potential to improve plant growth under salinity stress. Five bacterial isolates (WN-01 to WN-05) were successfully obtained. The isolates displayed multiple PGPR traits, including nitrogen fixation, phosphate solubilization, indole-3-acetic acid (IAA) synthesis, siderophore release, cellulase activity, 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity, exopolysaccharide production, and tolerance to salinity up to 9% NaCl. Molecular identification confirmed the isolates as Bacillus subtilis (WN-01), Priestia megaterium (WN-02), Pseudomonas segetis (WN-03), Bacillus pumilus (WN-04), and Bacillus cereus (WN-05). Compatibility analysis indicated their potential to be formulated as a consortium bioinoculant. In vivo pot experiments using sweet maize (Zea mays saccharata var. Bonanza F1) under saline conditions (4 dS m-1) showed that consortium application, especially at 10⁸ CFU ml-1, significantly enhanced plant height, leaf surface area, and chlorophyll content. Moreover, the total microbial population in soil increased proportionally with inoculum density, with the highest values recorded in the 10⁸ CFU ml-1 treatment. These findings demonstrate that local halotolerant PGPR have strong potential as bioinoculants to support crop growth and soil health in saline-impacted marginal lands.</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Sebelas Maret</dc:publisher>
	<dc:contributor xml:lang="en-US">Faculty of Biology, Universitas Gadjah Mada</dc:contributor>
	<dc:contributor xml:lang="en-US">Indonesia Endowment Fund for Education (LPDP), Ministry of Finance, Republic of Indonesia</dc:contributor>
	<dc:date>2025-09-30</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US"></dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://jurnal.uns.ac.id/carakatani/article/view/107138</dc:identifier>
	<dc:identifier>10.20961/carakatani.v40i4.107138</dc:identifier>
	<dc:source xml:lang="en-US">Caraka Tani: Journal of Sustainable Agriculture; Vol 40, No 4 (2025): October; 510-526</dc:source>
	<dc:source>2599-2570</dc:source>
	<dc:source>2613-9456</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://jurnal.uns.ac.id/carakatani/article/view/107138/pdf</dc:relation>
	<dc:relation>https://jurnal.uns.ac.id/carakatani/article/downloadSuppFile/107138/22839</dc:relation>
	<dc:relation>https://jurnal.uns.ac.id/carakatani/article/downloadSuppFile/107138/22840</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2025 Caraka Tani: Journal of Sustainable Agriculture</dc:rights>
	<dc:rights xml:lang="en-US">http://creativecommons.org/licenses/by-nc/4.0</dc:rights>
</oai_dc:dc>