ArticleJournal of experimental botany2019
Uncovering Bax inhibitor-1 dual role in the legume-rhizobia symbiosis in common bean roots.
Article in Journal of experimental botany, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 18 citations in OpenAlex.
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- Uclacyanin MtUC1 Is Involved in the Regulation of Nodule Senescence in Medicago truncatula.Molecular plant pathology · 2025Article
- Article
- The cytoprotective co-chaperone, AtBAG4, supports increased nodulation and seed protein content in chickpea without yield penalty.Scientific reports · 2023Article
- Symbiosis between cyanobacteria and plants: from molecular studies to agronomic applications.Journal of experimental botany · 2023Review
- Critical role for uricase and xanthine dehydrogenase in soybean nitrogen fixation and nodule development.The plant genome · 2023Article
- CRISPR/Cas9-Mediated Efficient Targeted Mutagenesis in Sesame (Frontiers in plant science · 2022Article
- Genetic and lipidomic analyses suggest thatAccess microbiology · 2022Article
- New methods for confocal imaging of infection threads in crop and model legumes.Plant methods · 2021Article
Corrections and comments
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Bax-inhibitor 1 (BI-1) is a cell death suppressor conserved in all eukaryotes that modulates cell death in response to abiotic stress and pathogen attack in plants. However, little is known about its role in the establishment of symbiotic interactions. Here, we demonstrate the functional relevance of an Arabidopsis thaliana BI-1 homolog (PvBI-1a) to symbiosis between the common bean (Phaseolus vulgaris) and Rhizobium tropici. We show that the changes in expression of PvBI-1a observed during early symbiosis resemble those of some defence response-related proteins. By using gain- and loss-of-function approaches, we demonstrate that the overexpression of PvBI-1a in the roots of common bean increases the number of rhizobial infection events (and therefore the final number of nodules per root), but induces the premature death of nodule cells, affecting their nitrogen fixation efficiency. Nodule morphological alterations are known to be associated with changes in the expression of genes tied to defence, autophagy, and vesicular trafficking. Results obtained in the present work suggest that BI-1 has a dual role in the regulation of programmed cell death during symbiosis, extending our understanding of its critical function in the modulation of host immunity while responding to beneficial microbes.
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