Indole-3-acetic acid producing bacteria and its application on the growth of rice

Susilowati, Dwi Ningsih; Riyanti, Eny Ida; Setyowati, Mamik; Mulya, Karden

doi:10.1063/1.5050112

Cited by 30 publications

(19 citation statements)

References 10 publications

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“…40 Additionally, the IAA hormone produced by bacteria administered on plants can affect the sensitivity of plant tissue, thus stimulating plant growth and improving crop productivity. 41 Nevertheless, many PGPB produce cytokinins and gibberellins, 42,43 and the role of bacterially synthesized hormones and the mechanism of synthesis are not yet completely understood. 44,45…”

Section: Discussionmentioning

confidence: 99%

“…The positive and significant association between PH and TIC probably is because bacteria capable of producing IAA can help increase growth and root extension so that the root surface becomes larger and eventually the plant is able to absorb more nutrients from the soil . Additionally, the IAA hormone produced by bacteria administered on plants can affect the sensitivity of plant tissue, thus stimulating plant growth and improving crop productivity . Nevertheless, many PGPB produce cytokinins and gibberellins, and the role of bacterially synthesized hormones and the mechanism of synthesis are not yet completely understood …”

Section: Discussionmentioning

confidence: 99%

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Phosphate‐solubilizing bacteria improveAgave angustifoliaHaw. growth under field conditions

et al. 2019

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BACKGROUND Phosphate‐solubilizing bacteria (PSB) can be an environment‐friendly strategy to improve crop production in low‐phosphorus (P) or P‐deficient soils. The effect of indigenous mixed inocula of PSB on Agave angustifolia Haw. growth was assessed. The four treatments evaluated were T1 (Pseudomonas luteola + Enterobacter sp.), T2 (Pseudomonas luteola + Bacillus sp.), T3 (Pseudomonas luteola + Acinetobacter sp.), and T4 (control); each was replicated 25 times using a completely randomized design during 12 months under rain‐fed conditions. Additionally, P solubilization in vitro of the mixed inocula with three different sources of inorganic P was tested. RESULTS The mixed inocula were able to solubilize more P from tricalcium phosphate Ca3(PO4)2 than from aluminum phosphate (AlPO4) and iron phosphate (FePO4). Relative to the control, T2 increased plant height by 22.9%, leaf dry weight by 391.4%, plant stem diameter by 49.6%, and root dry weight by 193.9%. The stem solid soluble content increased 50.0% with T1. Plant‐available soil P increased 94.6% with T3 and 77.3% with T1. Soil alkaline phosphatase activity increased 85.9% with T1. CONCLUSION T2 was the mixed inoculum that most improved Agave angustifolia plant growth. The indigenous mixed inocula of PSB evaluated appears to be a practical and efficient option for promoting field growth of Agave angustifolia plants. However, further research is necessary to achieve a deeper understanding of the relationships between different PSB species and their effects on agave, which may reveal some of the mechanisms of the synergistic interactions that are involved in the promotion of plant growth. © 2019 Society of Chemical Industry

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Phosphate‐solubilizing bacteria improveAgave angustifoliaHaw. growth under field conditions

et al. 2019

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“…Isolat bakteri yang berhasil diperoleh ditumbuhkan pada media Nutrient Broth (20 g L -1 , Merck) yang mengandung 200 mg L -1 larutan Ltriptofan sebagai prekursor. Sebanyak 1 ml supernatan dipisahkan dari debris sel dan ditambahkan 2 ml reagen Salkowski (0,1 ml 0.5 FeCI3, 50 ml HCIO4 50% berdasarkan Gordon dan Werber 1951), selanjutnya diukur menggunakan spektrofotometer pada panjang gelombang 530 nm (Chandra et al 2018;Susilowati et al 2018). Konsentrasi IAA dinyatakan dalam mg L -1 yang dihitung berdasarkan kurva standar IAA sintetik pada konsnetrasi 0 -100 mg L -1 .…”

Section: Pengujian Kemampuan Bakteri Dalam Menghasilkan Iaaunclassified

Potensi Bakteri Asal Bambu dalam Memproduksi Asam Indol Asetat (IAA)

Banna

Arifuddin

2021

agrosainstek

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Bambu dikenal sebagai memiliki kemampuan adaptif yang tinggi dalam mentoleransi perubahan ataupun cekaman lingkungan. Mikroorganisme lokal pada beberapa bagian tanaman bambu telah banyak dilaporkan dapat dimanfaatkan sebagai pupuk organik dan biokompos, namun potensi bakteri asal tanaman bambu sebagai penghasil IAA belum banyak dilaporkan. Dalam penelitian ini dilakukan isolasi bakteri rizosfer dan endofit yang berasal dari enam jenis bambu berbeda. Sampel bambu diperoleh dari kawasan hutan bambu Stasiun Mengkendek Tana Toraja. Isolat bakteri rizosfer diperoleh dari daerah sekitar perakaran tanaman bambu, sedangkan isolat bakteri endofit diperoleh dari jaringan segar akar dan rebung bambu. Dalam penelitian ini diperoleh 6 isolat bakteri rizosfer dan 12 isolat bakteri endofit. Seluruh isolat diidentifikasi bentuk sel, tipe Gram, uji biokimia, serta diukur kemampuannya dalam memproduksi IAA. Dari 18 isolat, diperoleh 12 isolat penghasil IAA. Isolat bakteri endofit mendominasi perolehan isolat penghasil IAA. Dari hasil identifikasi 16S diketahui isolat K12 memiliki kemiripan dengan Bacillus cereus dan mampu menghasilkan IAA sebesar 1.301 mg L-1, sedangkan isolat K14 memiliki kemiripan dengan Stenotrophomonas maltophilia dengan kemampuan menghasilkan IAA sebesar 2.737 mg L-1. Hasil rekonstruksi pohon filogeni menunjukkan isolat K12 memiliki kemiripan pasangan basa dengan Bacillus weidmannii, dan isolat K14 memiliki kekerabatan dengan kelompok Stenotrophomonas sp.

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“…This difference is allegedly due to the type varies based on the location of the sampling of plants and the type of bacteria. The variation of types and strains in the same genus can produce varies IAA due to environmental factors, growth rate, and availability of substrates such as amino acids and other N sources ( Souza et al 2015;Susilowati et al 2018).…”

Section: The Isolation and Characterization Of Endophytic Bacteria Frmentioning

confidence: 99%

The isolation, characterization endophytic bacteria on indole-3-acetic acid-producing and phosphate solubilizing from roots of local rice plant Kamba in Bada Valley, Central Sulawesi

et al. 2020

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Abstract. Sudewi S, Ala A, Baharuddin, Farid M. 2020. The isolation, characterization endophytic bacteria on from roots of local rice plant Kamba in Central Sulawesi, Indonesia. Biodiversitas 21: 1614-1624. The local Kamba rice plants are cultivated by the Bada Valley people for generations by obtaining seeds from previous crops. This rice plant is able to survive even though it is cultivated with traditional cultivation techniques. The ability to survive is suspected because this local rice plant is associated with endophytic bacteria through a variety of mechanisms including being able to produce the IAA hormone and its ability to dissolve phosphate. This study aims to find endophytic bacteria that have the potential to produce IAA and phosphate solvents through morphological and physiological characterization (Gram reaction test with 3% KOH, catalase test, hypersensitivity reaction and hemolysis activity), screening of IAA-producing bacteria qualitative and quantitative, phosphate dissolution activity on Pikovskaya medium, and quantitative using a spectrophotometer. Endophytic bacteria isolates from Gintu give the highest yields in IAA production and phosphate solubility activity, namely RKGU11 and RKGU6, respectively at 4,905 mg L-1 and 10.984 mg L-1 so that it has the potential to be used as a candidate for biofertilizer agents in developing effective sustainable agriculture, respectively, efficient and environmentally friendly.

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Indole-3-acetic acid producing bacteria and its application on the growth of rice

Cited by 30 publications

References 10 publications

Phosphate‐solubilizing bacteria improveAgave angustifoliaHaw. growth under field conditions

Phosphate‐solubilizing bacteria improveAgave angustifoliaHaw. growth under field conditions

Potensi Bakteri Asal Bambu dalam Memproduksi Asam Indol Asetat (IAA)

The isolation, characterization endophytic bacteria on indole-3-acetic acid-producing and phosphate solubilizing from roots of local rice plant Kamba in Bada Valley, Central Sulawesi

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