1-Aminocyclopropane-1-Carboxylate (ACC) Deaminase Genes in Rhizobia from Southern Saskatchewan

Jin, Depeng; Müller, Kirsten M.; Charles, Trevor C.; Vesely, Susanne; Glick, Bernard R.

doi:10.1007/s00248-009-9493-0

Cited by 28 publications

(36 citation statements)

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“…strains, among 233 rhizobial strains obtained from 30 different sites across Saskatchewan, Canada, displayed ACC deaminase activity (Duan et al, 2009). Ahmad et al (2011) isolated ten rhizobia and 25 PGPR containing ACC deaminse from nodules and rhizosphere soil samples of mungbean.…”

Section: Resultsmentioning

confidence: 99%

Amelioration of salt stress in chickpea (Cicer arietinum L.) by coinculation of ACC deaminase-containing rhizospheric bacteria with Mesorhizobium strains

Chaudhary

Sindhu

2016

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Chickpea is a major legume crop grown in the semi-arid tropics and its yields are adversely affected by salinity. In this study, 55 rhizobacterial isolates obtained from the chickpea rhizosphere soil were screened for their salt tolerance. At 3% NaCl concentration, 41.8% rhizobacterial isolates formed colonies varying from 0.5-10 mm size and only 10.9 per cent isolates showed growth at 4% NaCl concentration. Significant growth on ACC supplemented medium plates was observed in 32.7% rhizobacterial isolates. Coinoculation studies with ACC + as well as ACC -Mesorhizobium and rhizobacterial isolates were made on chickpea under chillum jar conditions containing sloger's broth with salt (EC, 4dS/m) and without salt. Coinoculation of Mesorhizobium isolate MBD26 (ACC + ) and rhizobacterial isolate RHD18 (ACC + ) formed 59 nodules/plant and caused 112.9% increase in plant dry weight as compared to uninoculated control plants at 50 days of plant growth, whereas in the presence of salt, only 31.2% increase in plant dry weight was observed in comparison to uninoculated plants. At 80 days of plant growth, coinoculation of Mesorhizobium isolate MBD26 (ACC + ) with rhizobacterial isolate RHD18 (ACC + ) further increased the nodule number (78 nodules/plant) and 141.9% increase in shoot dry weight was observed as compared to uninoculated plants. Thus, it was concluded that coinoculation of ACC + Mesorhizobium and rhizobacterial isolates showed more stimulatory effect on nodulation and plant biomass under normal and salt amended treatments.

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Section: Resultsmentioning

confidence: 99%

Amelioration of salt stress in chickpea (Cicer arietinum L.) by coinculation of ACC deaminase-containing rhizospheric bacteria with Mesorhizobium strains

Chaudhary

Sindhu

2016

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“…ACC deaminase induction in cells was performed as described by Duan et al (2008). Mesorhizobium strains were grown in TY (supplemented with 20 μg/ ml tetracycline when necessary) for 2-3 days at 28°C.…”

Section: Acc Deaminase Activity Assaymentioning

confidence: 99%

Enhanced chickpea growth-promotion ability of a Mesorhizobium strain expressing an exogenous ACC deaminase gene

et al. 2011

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Aims The main goal of the study reported herein was to assess the nodulation performance of a Mesorhizobium strain transformed with an exogenous ACC deaminase gene (acdS), and its subsequent ability to increase chickpea plant growth under normal and waterlogged conditions. Methods The Mesorhizobium ciceri strain LMS-1 was transformed with the acdS gene of Pseudomonas putida UW4 by triparental conjugation using plasmid pRKACC. A plant growth assay was conducted to verify the plant growth promotion ability of the LMS-1 (pRKACC) transformed strain under normal and waterlogging conditions. Bacterial ACC deaminase and nitrogenase activity was measured.Results By expressing the exogenous acdS gene, the transformed strain LMS-1 showed a 127% increased ability to nodulate chickpea and a 125% promotion of the growth of chickpea compared to the wild-type strain, under normal conditions. Plants inoculated with the LMS-1 wild-type strain showed a higher nodule number under waterlogging stress than under control conditions, suggesting that waterlogging increases nodulation in chickpea. No significant relationship was found between ACC deaminase and nitrogenase activity. Conclusions The results obtained in this study show that the use of rhizobial strains with improved ACC deaminase activity might be very important for developing microbial inocula for agricultural purposes.

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“…Thus, the rhizobacteria diminish the accumulation of excess ethylene levels and re-establish a healthy root system to deal with environmental stress. The study of rhizospheric bacteria such as Bacillus, Enterobacter, Pseudomonas, and Rhizobium, which have ACC deaminase activity (Duan et al, 2009), has demonstrated the expression of the ACC deaminase gene in plants under environmental stress treated with PGPR. Enterobacter cloacae and Pseudomonas putida expressing ACC deaminase have been associated with an increase in resistance to stress in inoculated tomato seeds (Glick, 2004).…”

Section: Production Of 1-amino Cyclopropane-1-carboxylic Acid (Acc) Dmentioning

confidence: 99%

Smart biologics for crop protection in agricultural systems

Baysal¹,

Tör²

2014

Turk J Agric For

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Crop losses caused by insects, pests, and pathogens remain one of the major problems in sustainable agriculture. Environmental and health concerns regarding the overuse of pesticides, and the impacts of climate change on epidemics are immediate pressing issues. In addition, the breakdown of plant resistance by pathogen populations brings limitations to the genetic control of diseases. Biologics can be effective in all types of agricultural systems including organic, sustainable, and conventional. Beneficial microorganisms including Bacillus and Trichoderma species have been employed as environmentally safe biopesticides. Molecular and proteomic studies on biopesticides have revealed the nature of antibiotics, secreted enzymes, and inhibitory compounds. This review focuses on the current knowledge regarding biological agents and their metabolites including quorum-sensing molecules and volatile compounds, and how they can be used in pest and disease management programs.

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1-Aminocyclopropane-1-Carboxylate (ACC) Deaminase Genes in Rhizobia from Southern Saskatchewan

Abstract: In Table 1 of the original version of this article, there were mistakes on the Accession numbers under the third column "ACC deaminase gene". Correct Table 1 is given here.

Cited by 28 publications

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Amelioration of salt stress in chickpea (Cicer arietinum L.) by coinculation of ACC deaminase-containing rhizospheric bacteria with Mesorhizobium strains

Amelioration of salt stress in chickpea (Cicer arietinum L.) by coinculation of ACC deaminase-containing rhizospheric bacteria with Mesorhizobium strains

Enhanced chickpea growth-promotion ability of a Mesorhizobium strain expressing an exogenous ACC deaminase gene

Smart biologics for crop protection in agricultural systems

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