Reference - Detail
| RRC ID | 72350 |
|---|---|
| Author | Wang Q, Zhang W, Xiao H, Sotta N, Beier MP, Takano J, Miwa K, Gao L, Fujiwara T. |
| Title | Involvement of boron transporter BOR1 in growth under low boron and high nitrate conditions in Arabidopsis thaliana. |
| Journal | Physiol Plant |
| Abstract |
BOR1 is an efflux transporter of boron (B), responsible for loading B into the xylem. It has been reported that nitrate (NO3- ) concentrations significantly influence B concentrations in leaves and BOR1 mRNA accumulation in roots. Here, to unravel the interactive effects of B and NO3- on plant growth and the function of BOR1 under the combination of B and NO3- , seedling growth was analyzed in Col-0 and bor1 mutants. The growth of bor1 mutants was negatively affected by high NO3- but neither by potassium chloride (KCl) nor ammonium (NH4+ ) under low B conditions, suggesting the involvement of BOR1 in growth under high NO3- . Mutants of bor2 and bor4 did not exhibit such growth responses, suggesting that this effect was specific to BOR1 among the BORs tested. Under low B conditions, loss of the BOR1 function led to a more significant decrease in B concentrations in the presence of high NO3- compared to normal NO3- . Additionally, grafting experiments demonstrated that these effects of NO3- occurred when BOR1 is absent in roots. High NO3- treatment elevated BOR1 mRNA accumulation while the BOR1 protein accumulation was downregulated. These apparent opposite responses indicated that the transcriptional and (post-)translational regulations follow different patterns. Our work provides evidence of a novel regulation of BOR1 and another B transport system by both B and NO3- in an interactive manner. |
| Volume | 171(4) |
| Pages | 703-713 |
| Published | 2021-4-1 |
| DOI | 10.1111/ppl.13249 |
| PMID | 33090485 |
| MeSH | Antiporters Arabidopsis* / genetics Arabidopsis* / metabolism Arabidopsis Proteins* / genetics Arabidopsis Proteins* / metabolism Boron Nitrates Plant Roots / genetics Plant Roots / metabolism |
| IF | 4.148 |
| Altmetric score |
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| The most frequently cited source | |
| Total number of mentions | 2 |
| Altmetric score changes over past 6months | 0.0 |
| Resource | |
| Arabidopsis / Cultured plant cells, genes | pss00101 |