| RRC ID |
72350
|
| 著者 |
Wang Q, Zhang W, Xiao H, Sotta N, Beier MP, Takano J, Miwa K, Gao L, Fujiwara T.
|
| タイトル |
Involvement of boron transporter BOR1 in growth under low boron and high nitrate conditions in Arabidopsis thaliana.
|
| ジャーナル |
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.
|
| 巻・号 |
171(4)
|
| ページ |
703-713
|
| 公開日 |
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
|
| リソース情報 |
| シロイヌナズナ / 植物培養細胞・遺伝子 |
pss00101 |
