Effect of Plant Growth-Promoting Rhizobacteria on Root Formation and Growth of Tissue Cultured Oil Palm (Elaeis guineensis Jacq.)

2007 ◽  
Vol 6 (4) ◽  
pp. 549-554 ◽  
Author(s):  
C.O. Azlin ◽  
H.G. Amir ◽  
Chan Lai Keng ◽  
I. Zamzuri
2020 ◽  
Vol 70 (2) ◽  
pp. 841-848 ◽  
Author(s):  
Munusamy Madhaiyan ◽  
Venkatakrishnan Sivaraj Saravanan ◽  
Jochen Blom ◽  
Theo H. M. Smits ◽  
Fabio Rezzonico ◽  
...  

2019 ◽  
Vol 17 (3) ◽  
pp. 344-348
Author(s):  
FAA Zakry ◽  
P. Ammal ◽  
M. Malahubban ◽  
A. R. Faridah ◽  
A.H.M. Umar

A total of 30 bacterial isolates were isolated from soil, rhizoplane, and internal tissue of oil palm roots. The isolates were qualitatively tested for their potential to fix N2, solubilize inorganic P and K, and produce phytohormone indole-3-acetic acid. Of the 30 isolates, six isolates were able to exhibit multiple beneficial traits. All six isolates were then identified based on fatty acid methyl esters profile as Escherichia coli strain EX2, Serratia sp. strain EN1, Pantoea ananatis strain EN3, Bacillus sp. strain EN5, Pantoea ananatis strain EN8 and Pantoea sp. strain EN9. Subsequently, all shortlisted isolates were evaluated for plant growth-promoting potential by using shallot as a test plant. The plant test showed no significant difference (p>0.05) between inoculated and uninoculated plants except for Pantoea sp. strain EN9 inoculation which increased significantly (p<0.05) total root length over uninoculated control. Host specificity and IAA capacity of the isolates may be among the important factors affecting their effectiveness in plant growth promotion. J Bangladesh Agril Univ 17(3): 344–348, 2019


2018 ◽  
Vol 28 (1) ◽  
pp. 25-34
Author(s):  
Waheeda Parvin ◽  
Quazi Shirin Akhter Jahan ◽  
Md Mahbubur Rahman ◽  
Mui Yun Wong

Burkholderia cepacia UPMB3 is an important plant growth promoting rhizobacteria isolated from oil palm rhizosphere which is considered to promote plant growth directly or indirectly. The IAA was extracted, purified, detected and confirmed by thin layer chromatography analyses f r om t h e strain UPMB3 of B. cepacia. Rf value was compared with the authentic IAA. Maximum 50 μg/ml IAA was produced in the medium supplemented with 4 mg/ml L-tryptophan, under shaken conditions at 150 rpm in seven days incubation at pH 7. The bacterial extract significantly influenced the growth of oil palm seedlings producing shoot, root, leaf and leaf length compared to control.Plant Tissue Cult. & Biotech. 28(1): 25-34, 2018 (June)


2014 ◽  
Vol 5 (2) ◽  
Author(s):  
Hilwa Walida

White root fungus disease has become the most damaging root disease in rubber trees in both Africa and Asia that supplies 98% of rubber products to the world market. Chemical control by using pesticide was a common root control of white root fungus. PGPR (Plant Growth Promoting Rhizobacteria) could be one of the solutions in biological control of environmentally to against white root fungi. The aims of yhis study were to obtain isolates of local PGPR bacteria from the root endophytes of oil palm trees, to know the morphological characteristics of local PGPR isolates from root endophytes of oil palm plants, and to know the potential of biological control agents againts white root fungus disease. This research was conducted by using descriptive analysis method. The results showed that there were 9 bacterial isolates from the root endophytes of oil palm plants with different macroscopic morphological characteristic and there were 9 isolatesable to inhibite the growth of white root fungus with the biggest potential was A5 isolate. Keywords : PGPR, Root Endophytes of Palm Oil Plant, Rigidoporus microporus


2020 ◽  
Vol 21 (1) ◽  
pp. 14-19
Author(s):  
Praptiningsih Gamawati Adinurani ◽  
Sri Rahayu ◽  
Nurul Fima Zahroh

Mikroba Bacillus subtilis merupakan agen pengendali hayati mempunyai kelebihan sebagai Plant Growth Promoting Rhizobacteria (PGPR) yaitu dapat berfungsi sebagai biofertilizer, biostimulan, biodekomposer dan bioprotektan. Tujuan penelitian mengetahui potensi B. subtilis dalam merombak bahan organik sebagai usaha meningkatkan ketersediaan bahan organik tanah yang semakin menurun. Penelitian menggunakan Rancangan Petak Terbagi dengan berbagai  bahan organik sebagai petak utama (B0 = tanpa bahan organik, B1 = kotoran ayam,  B2 = kotoran kambing, B3 = kotoran sapi) dan aplikasi B.subtilis sebagai anak petak (A0 = 0 cc/L, A1 = 5cc/L, A2 = 10 cc/L, Pengamatan meliputi variabel tinggi tanaman, indeks luas daun, jumlah buah per tanaman, berat buah per tanaman, dan bahan organik tanah. Data pengamatan  dianalisis ragam  menggunakan  Statistical Product and Service Solutions (SPSS) versi 25 dan dilanjutkan dengan uji Duncan untuk mengetahui signifikansi perbedaan antar perlakuan. Hasil penelitian menunjukkan tidak terdapat interaksi antara bahan organik kotoran ternak dan konsentrasi B. subtilis terhadap semua variabel pengamatan. Potensi B. subtilis sangat baik dalam mendekomposisi bahan organik yang ditunjukkan dengan peningkatan bahan organik, dan hasil terbaik pada kotoran  sapi (B3) dan konsentrasi B. subtilis 15 mL/L masing-masing sebesar 46.47 % dan 34.76 %. Variabel pertumbuhan tidak berbeda nyata kecuali tinggi tanaman dengan pertambahan tinggi paling banyak pada pemberian kotoran kambing sebesar 170.69 %.


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