3a are also synchronously suppressed in Osnar2. 1 are reduced in response to nitrate induction, and constitutive high-affinity influx and high-affinity nitrate-inducible influx are dramatically decreased. 1 mutant plant, the expression levels of AtNRT1. NRT3 (also named NAR2) proteins are partner proteins that interact with most NRT2 proteins and contribute to high-affinity nitrate uptake. This indicates that both alternative splices execute different functions in rice development. 3a expression is decreased, xylem loading of nitrate is impaired, and there is decreased plant growth at low nitrate levels. 3b leads to an improvement in grain yield and NUE by 40%. 3 is transcribed into two spliced isoforms ( OsNRT2. There is a lesser number of NRT2 genes than NRT1, and they are expressed predominantly in the root. 3) greatly improves N utilization and grain yield, as well as shortens the maturation time. 5) is a putative homolog of CHL1, and it contributes to grain yield and NUE in rice. 1 ( CHL1), a dual-affinity nitrate transporter, functions as high-affinity and low-affinity nitrate transporters, when it is phosphorylated and dephosphorylated, respectively. The functions of some NRT genes have been analyzed in plants. To date, two kinetically distinct nitrate uptake systems have been identified by physiological and molecular studies in plant roots, including the low-affinity transport system (LATS), which is encoded by the NITRATE TRANSPORTER 1/ PEPTIDE TRANSPORTER (NRT1/PTR) family (NPF), and the high-affinity transport system (HATS), which is encoded by the nitrate transporter 2 ( NRT2) family. Improving nitrogen use efficiency (NUE) in plants requires a more complete understanding of the transport of NO 3 - from the soil to the plant and within the plant itself. Therefore, it is important to improve nitrogen use efficiency for cereal production with a low nitrogen supply. However, the excessive use of nitrogen fertilizers results in severe pollution and environmental deterioration. Limited nitrogen supplies decrease crop production. Nitrogen, as a function of nutrient availability, plays an essential role in controlling plant growth and development. Taken together, the data generated in the present study will be useful for genome-wide analyses to determine the precise role of the HvNRT2/3 genes during barley development, with the ultimate goal of improving NUE and crop production. 1 improved the yield related traits in Arabidopsis. Furthermore, the overexpression of HvNRT2. In addition, the HvNRT2/3 genes displayed various expression patterns at selected developmental stages and were induced in the roots by both low and high nitrogen levels. Remarkably, the presence of tandem repeats indicated that duplication events contributed to the expansion of the NRT2 gene family in barley. All the HvNRT2/3 genes were located on chromosomes 3H, 5H, 6H or 7H. In the present study, ten putative NRT2 and three putative NRT3 genes were identified using bioinformatics methods. However, limited data are available on the contribution of the NRT2/3 gene family in barley nitrate transport. Plants have high-affinity nitrate transport systems, which involve certain nitrate transporter (NRT) genes. Nitrogen use efficiency (NUE) is the efficiency with which plants acquire and use nitrogen.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |