ArticleApplied and environmental microbiology2006
Expression of the 1-aminocyclopropane-1-carboxylic acid deaminase gene requires symbiotic nitrogen-fixing regulator gene nifA2 in Mesorhizobium loti MAFF303099.
Article in Applied and environmental microbiology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.
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24 citing papers in PubMed, 92 citations in OpenAlex.
- Rhizobia and non-rhizobial nodule bacteria with ACC deaminase increase both nodulation and stress resistance.Frontiers in microbiology · 2025Review
- How Do Plant Growth-Promoting Bacteria Use Plant Hormones to Regulate Stress Reactions?Plants (Basel, Switzerland) · 2024Review
- Bacterial ACC deaminase: Insights into enzymology, biochemistry, genetics, and potential role in amelioration of environmental stress in crop plants.Frontiers in microbiology · 2023Review
- Nodulation and Growth Promotion of Chickpea byMicroorganisms · 2022Article
- A novel function of the key nitrogen-fixation activator NifA in beta-rhizobia: Repression of bacterial auxin synthesis during symbiosis.Frontiers in plant science · 2022Article
- Plants Saline Environment in Perception with Rhizosphere Bacteria Containing 1-Aminocyclopropane-1-Carboxylate Deaminase.International journal of molecular sciences · 2021Review
- Legume-rhizobium dance: an agricultural tool that could be improved?Microbial biotechnology · 2021Review
- Exogenous ACC Deaminase Is Key to Improving the Performance of Pasture Legume-Rhizobial Symbioses in the Presence of a High Manganese Concentration.Plants (Basel, Switzerland) · 2020Article
- Significance of Plant Growth Promoting Rhizobacteria in Grain Legumes: Growth Promotion and Crop Production.Plants (Basel, Switzerland) · 2020Review
- Symbiosis islands of Loteae-nodulatingMicrobial genomics · 2020Article
- Article
- Nodulation and Delayed Nodule Senescence: Strategies of Two Bradyrhizobium Japonicum Isolates with High Capacity to Fix Nitrogen.Current microbiology · 2018Article
- Regulation of Nitrogen Fixation inFrontiers in microbiology · 2018Article
- Survey of Plant Growth-Promoting Mechanisms in Native Portuguese Chickpea Mesorhizobium Isolates.Microbial ecology · 2017Article
- Role and Regulation of ACC Deaminase Gene inFrontiers in genetics · 2017Article
- Properties of Astragalus sp. microsymbionts and their putative role in plant growth promotion.Archives of microbiology · 2016Article
- Nitrogen Fixation and Molecular Oxygen: Comparative Genomic Reconstruction of Transcription Regulation in Alphaproteobacteria.Frontiers in microbiology · 2016Article
- Bacterial Modulation of Plant Ethylene Levels.Plant physiology · 2015Review
- Biochemistry and genetics of ACC deaminase: a weapon to "stress ethylene" produced in plants.Frontiers in microbiology · 2015Review
- 1-aminocyclopropane-1-carboxylic acid (ACC) in plants: more than just the precursor of ethylene!Frontiers in plant science · 2014Review
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Many soil bacteria contain 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase, which degrades ACC, a precursor of the phytohormone ethylene. In order to examine the regulation of the acdS gene encoding ACC deaminase in Mesorhizobium loti MAFF303099 during symbiosis with the host legume Lotus japonicus, we introduced the beta-glucuronidase (GUS) gene into acdS so that GUS was expressed under control of the acdS promoter, and we also generated disruption mutants with mutations in a nitrogen fixation regulator gene, nifA. The histochemical GUS assay showed that there was exclusive expression of acdS in mature root nodules. Two homologous nifA genes, mll5857 and mll5837, were found in the symbiosis island of M. loti and were designated nifA1 and nifA2, respectively. Quantitative reverse transcription-PCR demonstrated that nifA2 disruption resulted in considerably diminished expression of acdS, nifH, and nifA1 in bacteroid cells. In contrast, nifA1 disruption slightly enhanced expression of the acdS transcripts and suppressed nifH to some extent. These results indicate that the acdS gene and other symbiotic genes are positively regulated by the NifA2 protein, but not by the NifA1 protein, in M. loti. The mode of gene expression suggests that M. loti acdS participates in the establishment and/or maintenance of mature nodules by interfering with the production of ethylene, which induces negative regulation of nodulation.
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