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

Azlin, C. O.; Amir, H. G.; ChanLai, Keng; Ishak, Zamzuri

doi:10.3923/biotech.2007.549.554

Cited by 13 publications

(12 citation statements)

References 23 publications

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“…Shakeri et al [9] reported that application of nitrogen fertilizers and nitrogen fixing rhizobacteria significantly improved the protein content in sesame. It has been reported that inoculation of oil palm plants with A. lipoferum significantly improved the chlorophyll content [16] and these findings are in line with our results except that of tested strains enhanced yield and oil quality along with the half dose of nitrogen as well as phosphorous fertilizer. Azospirillum is a N 2 -fixing organism and assist in increasing nitrogen metabolism and leaf protein content.…”

Section: Discussionsupporting

confidence: 93%

Nutritional value of Sesamum indicum L. was improved by Azospirillum and Azotobacter under low input of NP fertilizers

et al. 2019

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BackgroundSesame (Sesame indicum L.) is well-known as a versatile industrial crop having various usages and contains 50–55% oil, 20% protein, 14–20% carbohydrate and 2–3% fiber. Several environmental factors are known to adversely affect yield and productivity of sesame. Our overall aim was to improve the growth, yield and quality of sesame cv. TS-3 using plant growth promoting rhizobacteria (PGPR) and saving the nitrogen and phosphate fertilizers (NP) by 50%. Field experiment (randomized complete block design) was conducted during the months of July to October of two consecutive years 2012–2013. Azospirillum (AL) and Azotobacter (AV) were applied as seed inoculation alone as well as along with half of the recommended dose of nitrogen (N) and phosphate (P) fertilizers (urea and diammonium phosphate) at the rate of 25 kg/ha and 30 kg/ha respectively.ResultsHere we report that A. lipoferum along with half dose of NP fertilizers (ALCF) were highly effective in increasing the agronomic and yield traits of sesame as compared to the control. A. vinelandii plus NP fertilizers (AVCF) exhibited higher seed oil content. Minimum acid value, optimum specific gravity and modified fatty acid composition were observed in ALCF treatment. Increase in oleic acid by ALCF is directly linked with improved oil quality for health benefits as oleic acid is the fatty acid which creates a balance between saturation and unsaturation of oil and for the hypotensive (blood pressure reducing) effects.ConclusionIt is inferred that ALCF treatment improved plant growth, seed yield and oil quality of sesame pertaining to good quality edible oil production.

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Section: Discussionsupporting

confidence: 93%

Nutritional value of Sesamum indicum L. was improved by Azospirillum and Azotobacter under low input of NP fertilizers

et al. 2019

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“…Sturz et al (2000) suggested that such a relationship could be introduced to the in vitro plant materials as early as the embryoid and shoot formation stages. At an early stage, this relationship allows the host plant to be better adapted to the inoculum for an effective and efficient micropropagation process (Sturz et al, 2000;Azlin et al, 2007). Some early micropropagation stages of plant-microbe interactions have also been reported, such as Rhizobium japonicum associated with tobacco and cowpea cell cultures (Scowcroft and Gibson, 1975), Azotobacter zettuovii and carrot callus (Varga et al, 1994), Azomonas insignis with strawberry callus (Preininger et al, 1997), Azospirillum sp.…”

Section: Artificial Symbiosis Of Pgpr and In Vitro Plant Culturementioning

confidence: 99%

Biotization of in vitro oil palm (Elaeis guineensis Jacq.) and its plant-microbe interactions

et al. 2023

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Continuous discovery of novel in vitro plant culture practices is always essential to promote better plant growth in the shortest possible cultivation period. An alternative approach to conventional micropropagation practice could be achieved through biotization by inoculating selected Plant Growth Promoting Rhizobacteria (PGPR) into the plant tissue culture materials (e.g., callus, embryogenic callus, and plantlets). Such biotization process often allows the selected PGPR to form a sustaining population with various stages of in vitro plant tissues. During the biotization process, plant tissue culture material imposes developmental and metabolic changes and enhances its tolerance to abiotic and biotic stresses, thereby reducing mortality in the acclimatization and pre-nursery stages. Understanding the mechanisms is, therefore crucial for gaining insights into in vitro plant-microbe interactions. Studies of biochemical activities and compound identifications are always essential to evaluate in vitro plant-microbe interactions. Given the importance of biotization in promoting in vitro plant material growth, this review aims to provide a brief overview of the in vitro oil palm plant-microbe symbiosis system.

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“…Inoculation of PGPR to oil palm seedling at the early stage of growth would enable early associative interactions between the bacteria and the seedling. These early associations would enhance adaptation of the seedlings to the environmental conditions, hence, increase the survival rate (Sturz and Nowak 2000;Azlin et al 2007). Previous studies have shown that inoculation of PGPR at the early stage of plant growth could significantly enhance survival rates of the host plants (Pandey et al 2000).…”

Section: Introductionmentioning

confidence: 97%

An endophytic Bacillus strain promotes growth of oil palm seedling by fine root biofilm formation

2018

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Plant-microbe interaction is one of the most important determining factors that could influence plant health and soil fertility. In this research, plant-microbe interaction between Bacillus salmalaya strain 139SI and oil palm (Elaeis guineensis Jacq.) was initiated by inoculating B. salmalaya strain 139SI at the early stage of oil palm seedling growth. Colonization of the strain 139SI on oil palm seedling roots and its mechanisms of plant growth promotion were evaluated and characterized. Analysis of strain 139SI colonization showed that the strain colonizes and attached to the root surface by forming biofilm. The strain 139SI was identified as endophytic bacteria as it shows the ability to colonize plant rhizosphere and penetrate into the plant internal root tissue. The results also indicate that the strain was positive for indole acetic acid (IAA), nitrogen fixation, phosphate solubilization, and siderophores production. The plant growth promoting features of strain 139SI were further confirmed by growth enhancement of oil palm seedling inoculated with this strain. The overall findings of this study suggest that associations of this novel strain could enhance growth quality of oil palm seedlings, hence, enable better adaptation of the seedlings to the environmental conditions of the planting site.

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

Cited by 13 publications

References 23 publications

Nutritional value of Sesamum indicum L. was improved by Azospirillum and Azotobacter under low input of NP fertilizers

Nutritional value of Sesamum indicum L. was improved by Azospirillum and Azotobacter under low input of NP fertilizers

Biotization of in vitro oil palm (Elaeis guineensis Jacq.) and its plant-microbe interactions

An endophytic Bacillus strain promotes growth of oil palm seedling by fine root biofilm formation

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