Effect of Rhizobacteria on Yield of Hydroponically Grown Tomato Plants

Gül, Ayşe; Özaktan, Hatice; Yolageldi, L.; Çakır, Birsen; Şahin, Mevlüt; Akat, Şahika

doi:10.17660/actahortic.2012.952.98

Cited by 10 publications

(6 citation statements)

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“…Before being inoculated, the circle hole around the plant with ca. 3 cm in depth were made, then poured the solution of PGPR into the circle hole in the planting media with the 3 cm distance from the plant with a dose of 30 ml per plant (Gul et al, 2012). By this procedure, PGPR can colonize into the plant roots quickly.…”

Section: The Biological Fertilizer Applicationmentioning

confidence: 99%

Increasing the Growth and Development of Chili-Pepper Under Three Different Shading Condition in Response to Biofertilizers Application

2021

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Biological agents such as rhizosphere bacteria and Vesicular Arbuscular Mycorrhiza (VAM) are potential agents to improve soil qualities. In addition, species and varieties of crops give different response to the shading related to their growth and development. The research aimed to determine the effect of biofertilizer application under different levels of shading conditions on the growth and capsaicin content of Capsicum frutescens L. and evaluate the suitable levels of shading. The research was conducted from February to June 2019 at Universitas Brawijaya. Bhaskara variety was chosen in this research. Thirteen treatments and three replications were arranged in the randomized design with nest pattern (Nested). The treatments were a combination between the shading level and biofertilizers. The dry weight, nutrient content, fresh weight and capsaicin content were observed. The results showed the application of biofertilizers consisted of PGPR and VAM consortium, under the lowest shading condition (25%) increased the total dry weight of chili, the nutrients absorption, and the capsaicin content. The capsaicin content is influenced by the fruit weight of chili and plant nitrogen uptake. Biofertilizers and the lowest shading conditions contribute to supporting the growth and development of chili pepper.

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Section: The Biological Fertilizer Applicationmentioning

confidence: 99%

Increasing the Growth and Development of Chili-Pepper Under Three Different Shading Condition in Response to Biofertilizers Application

2021

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“…The presence of oxidase, fluorescent pigment production, gelatinase, arginine dihydrolase, levan sucrose, reduction of nitrate, pectinolytic activity on potato slices and hypersensitive reaction (HR) on tobacco leaves were ascertained (Lelliott and Stead, 1987;Schaad et al, 2001). Previous study has revealed that the P. putida strain TR21/1 can produce auxins and siderophores, has phosphate-solubilizing capacity and does not enhance the growth of tomato plants compared to the non-bacterized control treatment (Gul et al, 2012).…”

Section: Pgpr Strain and Inoculationmentioning

confidence: 95%

“…The bacterial strain, called TR21/1, isolated from the rhizosphere of tomato plants grown in southeastern greenhouses in Türkiye was selected for this study according to the tests for in vitro plant growth promotion and biocontrol to FORL (Gul et al, 2012). This strain was identified as Pseudomonas putida according to biochemical and physiological test results as described previously (Schaad et al, 2001).…”

Section: Pgpr Strain and Inoculationmentioning

confidence: 99%

“…In this study, the growth of TR21/1-treated tomatoes and non-bacterized control plants did not differ, indicating that ISR-mediated defense against FORL was not associated with plant growth promotion. This outcome is interesting given that TR21/1 produces auxins and siderophores, on top of exhibiting phosphate-solubilizing capacity (Gul et al, 2012). Furthermore, it is well established that PGPR can promote plant growth through atmospheric nitrogen fixation, nutrient uptake enhancement, soil iron chelation, phytohormone synthesis, and stimulation of enzymes that modulate plant growth/development (Arora et al, 2001).…”

Section: Effect Of P Putida Strain Tr21/1 On Growth Promotion Of Toma...mentioning

confidence: 99%

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Pseudomonas putida induces resistance to Fusarium oxysporum f. sp. radicis-lycopersici in tomato plants by activating expression of defense-related genes

Aydemir

Şahin²,

Gül

et al. 2022

ANADOLU Ege Tarımsal Araştırma Enstitüsü Dergisi

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Plant growth-promoting rhizobacteria (PGPR) may prevent attack from pathogenic microorganisms by eliciting induced systemic resistance (ISR). In the present work, Pseudomonas putida isolate TR21/1 showed significant biological control of tomato seedlings inoculated with Fusarium oxysporum f.sp. radicis-lycopersici (FORL). Here, the SA-responsive genes PR-1, PR-4, PR-6 and CH9 were downregulated upon induction of ISR by P. putida strain TR21/1 and induced when bacterized tomato roots were inoculated with FORL. This indicates that SAR involves the accumulation of SA-responsive genes but ISR does not. Similarly, expression of ET-regulated genes such as ACO1, ACO3, ACO4 were not induced in ISR-expressing tomato roots and P. putida treatment induced only ACO2 expression suggesting that ACO2 expression is involved in ISR-expressing tomato seedlings. In contrast, the infection of ISR expressing plants by FORL strongly induced ACO3, ACO2, and ACO1 indicating the transcriptional regulation of ACO genes in response to FORL attack which may be related to possible ethylene synthesis in response to pathogen. Here P. putida treatment increased ETR1 gene expression in roots and this induction was upregulated in presence of FORL indicating that ETR1 plays a role in the protection of plants against FORL by reducing ethylene sensitivity. Activation of SA-and ET- regulated genes in bacterized plants in the presence of FORL implies that not only SA but other signals as well, may play an important role in inducing resistance.

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“…Plant Growth Promoting Rhizobacteria (PGPR) were chosen by Gul et al [30] in order to observe their ability to stimulate growth of plant and for the biological control of crown and root rot diseases caused by pathogen Fusarium oxysporum f. sp. radicis-lycopersici (FORL).…”

Section: Pgpr As Biocontrol Agents (Biopesticides)mentioning

confidence: 99%

Plant Growth Promoting- Rhizobacteria (PGPR): Their Potential as Biofertilizer and Biopesticide Agents: A Review

Purnima

Singh

2023

AJAAR

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Currently, world is dealing with the curse of pollution in agricultural fields due to rampant use of chemical fertilizers and pesticides. These agrochemicals cause great harm to human health when consumed in food (e.g. cancer and thyroid) and also to environment (reduce fertility of soil etc) when released out there. Hence, there is an intense demand of such biological agents (e.g. microorganisms) which could partially or fully replace these agrochemicals. Plant growth promoting rhizobacteria could come to the rescue and would help to escalate growth and productivity of plants in an environment friendly way. Plant growth promoting rhizobacteria occurs in/around plant roots; enhance its growth and development, directly or indirectly by depleting or secreting several regulative chemical compounds. The direct method by which plant growth promoting rhizobacteria escalates plant growth is, by making easy availability of phosphorus, nitrogen and other essential minerals as well as by controlling quantity of plant hormones whereas indirect methods include, reducing impeding effects of pathogenic microbes (e.g. by siderophore production) which adversely affect development and growth of plants. There are several studies which registers that plant growth promoting rhizobacteria escalates health and yield of several plant species, both in normal and adverse situations. Therefore, plant growth promoting rhizobacteria could possibly lower the reliability of world on harmful agricultural chemicals which disturbs ecosystem. They can be used as a potent biofertilizers and biopesticides whose market demand is also hiking globally, currently as reported here.

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Effect of Rhizobacteria on Yield of Hydroponically Grown Tomato Plants

Cited by 10 publications

References 0 publications

Increasing the Growth and Development of Chili-Pepper Under Three Different Shading Condition in Response to Biofertilizers Application

Increasing the Growth and Development of Chili-Pepper Under Three Different Shading Condition in Response to Biofertilizers Application

Pseudomonas putida induces resistance to Fusarium oxysporum f. sp. radicis-lycopersici in tomato plants by activating expression of defense-related genes

Plant Growth Promoting- Rhizobacteria (PGPR): Their Potential as Biofertilizer and Biopesticide Agents: A Review

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