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The Role of GmSnRK1-GmNodH Module in Regulating Soybean Nodulation Capacity. Int J Mol Sci 2023; 24:ijms24021225. [PMID: 36674741 PMCID: PMC9861110 DOI: 10.3390/ijms24021225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 11/25/2022] [Accepted: 11/29/2022] [Indexed: 01/11/2023] Open
Abstract
SnRK1 protein kinase plays hub roles in plant carbon and nitrogen metabolism. However, the function of SnRK1 in legume nodulation and symbiotic nitrogen fixation is still elusive. In this study, we identified GmNodH, a putative sulfotransferase, as an interacting protein of GmSnRK1 by yeast two-hybrid screen. The qRT-PCR assays indicate that GmNodH gene is highly expressed in soybean roots and could be induced by rhizobial infection and nitrate stress. Fluorescence microscopic analyses showed that GmNodH was colocalized with GsSnRK1 on plasma membrane. The physical interaction between GmNodH and GmSnRK1 was further verified by using split-luciferase complementary assay and pull-down approaches. In vitro phosphorylation assay showed that GmSnRK1 could phosphorylate GmNodH at Ser193. To dissect the function and genetic relationship of GmSnRK1 and GmNodH in soybean, we co-expressed the wild-type and mutated GmSnRK1 and GmNodH genes in soybean hairy roots and found that co-expression of GmSnRK1/GmNodH genes significantly promoted soybean nodulation rates and the expression levels of nodulation-related GmNF5α and GmNSP1 genes. Taken together, this study provides the first biological evidence that GmSnRK1 may interact with and phosphorylate GmNodH to synergistically regulate soybean nodulation.
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Kroc M, Koczyk G, Kamel KA, Czepiel K, Fedorowicz-Strońska O, Krajewski P, Kosińska J, Podkowiński J, Wilczura P, Święcicki W. Transcriptome-derived investigation of biosynthesis of quinolizidine alkaloids in narrow-leafed lupin (Lupinus angustifolius L.) highlights candidate genes linked to iucundus locus. Sci Rep 2019; 9:2231. [PMID: 30783128 PMCID: PMC6381137 DOI: 10.1038/s41598-018-37701-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 12/12/2018] [Indexed: 01/23/2023] Open
Abstract
Unravelling the biosynthetic pathway of quinolizidine alkaloids (QAs), regarded as antinutritional compounds of narrow-leafed lupin (NLL) seeds, is fundamental to best exploit NLL as food or feed. We investigated 12 candidate genes connected to QA biosynthesis, selecting them by transcriptomic and genomic approaches, from the landscape of genes differentially expressed in leaves of the high- and low-alkaloid NLL accessions. Linkage analysis enabled the assessment of the location of the candidate genes in relation to iucundus, a major locus of unknown identity, that confers reduced QA content in seeds. The key finding was the identification of APETALA2/ethylene response transcription factor, RAP2-7, cosegregating with the iucundus locus and located within a region with highly significant QTLs that affect QA composition. We additionally identified a 4-hydroxy-tetrahydrodipicolinate synthase (DHDPS) gene involved in L-lysine biosynthesis as being closely linked to iucundus. The distributed location of other remaining candidates (including previously known QA genes) across different linkage groups, also indirectly supports the transcription factor as a possible regulator of lupin alkaloid biosynthesis. Our findings provide crucial insight into QA biosynthesis in NLL. Additionally, we evaluated and selected appropriate reference genes for qRT-PCRs to analyse the expression levels of QA genes in NLL.
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Affiliation(s)
- Magdalena Kroc
- Department of Genomics, Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland.
| | - Grzegorz Koczyk
- Department of Biometry and Bioinformatics, Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland
| | - Katarzyna A Kamel
- Department of Genomics, Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland
| | - Katarzyna Czepiel
- Department of Genomics, Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland
| | - Olga Fedorowicz-Strońska
- Department of Genomics, Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland
| | - Paweł Krajewski
- Department of Biometry and Bioinformatics, Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland
| | - Joanna Kosińska
- Department of Medical Genetics, Medical University of Warsaw, Pawińskiego 3c, 02-106, Warsaw, Poland
| | - Jan Podkowiński
- Department of Molecular and Systems Biology, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Piotrowo 2, 61-138, Poznań, Poland
| | - Paulina Wilczura
- Department of Genomics, Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland
| | - Wojciech Święcicki
- Department of Genomics, Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479, Poznań, Poland
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