ArticlePloS one2009
NPR1 protein regulates pathogenic and symbiotic interactions between Rhizobium and legumes and non-legumes.
Article in PloS one, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed, 47 citations in OpenAlex.
- Dynamics of Hydrogen Peroxide Accumulation During Tip Growth of Infection Thread in Nodules and Cell Differentiation in Pea (Plants (Basel, Switzerland) · 2024Article
- Targeted knockout of early nodulin-like 3 (MusaENODL3) gene in banana reveals its function in resistance to Xanthomonas wilt disease.Plant biotechnology journal · 2024Article
- Assessment of TunisianMicroorganisms · 2023Article
- Understanding plant-microbe interaction of rice and soybean with two contrasting diazotrophic bacteria through comparative transcriptome analysis.Frontiers in plant science · 2022Article
- Reactive Oxygen Species and Nitric Oxide Control Early Steps of the Legume - Rhizobium Symbiotic Interaction.Frontiers in plant science · 2016Review
- Salicylic acid prevents Trichoderma harzianum from entering the vascular system of roots.Molecular plant pathology · 2014Article
- Phytohormone regulation of legume-rhizobia interactions.Journal of chemical ecology · 2014Review
- Oak root response to ectomycorrhizal symbiosis establishment: RNA-Seq derived transcript identification and expression profiling.PloS one · 2014Article
- Article
- Two-way plant mediated interactions between root-associated microbes and insects: from ecology to mechanisms.Frontiers in plant science · 2013Review
- OsSNDP1, a Sec14-nodulin domain-containing protein, plays a critical role in root hair elongation in rice.Plant molecular biology · 2013Article
- Article
- Evidence of a role for foliar salicylic acid in regulating the rate of post-ingestive protein breakdown in ruminants and contributing to landscape pollution.Journal of experimental botany · 2012Article
- ROS production during symbiotic infection suppresses pathogenesis-related gene expression.Plant signaling & behavior · 2012Article
- Cytoplasmic H2O2 prevents translocation of NPR1 to the nucleus and inhibits the induction of PR genes in Arabidopsis.Plant signaling & behavior · 2010Article
- Whole genome wide expression profiles of Vitis amurensis grape responding to downy mildew by using Solexa sequencing technology.BMC plant biology · 2010Article
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundLegumes are unique in their ability to establish symbiotic interaction with rhizobacteria from Rhizobium genus, which provide them with available nitrogen. Nodulation factors (NFs) produced by Rhizobium initiate legume root hair deformation and curling that entrap the bacteria, and allow it to grow inside the plant. In contrast, legumes and non-legumes activate defense responses when inoculated with pathogenic bacteria. One major defense pathway is mediated by salicylic acid (SA). SA is sensed and transduced to downstream defense components by a redox-regulated protein called NPR1. METHODOLOGY/PRINCIPAL
findingsWe used Arabidopsis mutants in SA defense pathway to test the role of NPR1 in symbiotic interactions. Inoculation of Sinorhizobium meliloti or purified NF on Medicago truncatula or nim1/npr1 A. thaliana mutants induced root hair deformation and transcription of early and late nodulins. Application of S. meliloti or NF on M. truncatula or A. thaliana roots also induced a strong oxidative burst that lasted much longer than in plants inoculated with pathogenic or mutualistic bacteria. Transient overexpression of NPR1 in M. truncatula suppressed root hair curling, while inhibition of NPR1 expression by RNAi accelerated curling. CONCLUSIONS/SIGNIFICANCE: We show that, while NPR1 has a positive effect on pathogen resistance, it has a negative effect on symbiotic interactions, by inhibiting root hair deformation and nodulin expression. Our results also show that basic plant responses to Rhizobium inoculation are conserved in legumes and non-legumes.
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