Genetic regulation of the traits contributing to wheat nitrogen use efficiency

Islam, Shahidul; Zhang, Jingjuan; Zhao, Yun; She, Maoyun; Ma, Wujun

doi:10.1016/j.plantsci.2020.110759

Cited by 37 publications

(21 citation statements)

References 304 publications

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“…HvNRT2.7 was identified as a promising candidate to increase the dry weight of the root and shoot and became a potential target for genetic improvement in this species [ 103 ]. In addition, for the pleiotropic effects of the NRT2 and NRT3 gene families, recent findings indicate that the genetic basis of efficient transport of nitrate involves these transporters among a pyramid of several genes that must be ranked to achieve the most effective approach that allows a satisfactory NUE level in the field [ 104 ] In rice crops, it has been shown that the overexpression of the OsNRT2.3b transporter increases the NUE, but this response improves if this transporter is introduced together with the promoter OsNAR2.1p. Since it increases the NUE level and the yield of the grain, it additionally influences the homeostasis of the pH, which improves the absorption of ammonium, P, and Fe as well as the metabolism of other nutrients [ 19 , 101 ].…”

Section: Discussionmentioning

confidence: 99%

Phylogenomic and Microsynteny Analysis Provides Evidence of Genome Arrangements of High-Affinity Nitrate Transporter Gene Families of Plants

Zoghbi-Rodríguez

Gamboa-Tuz

Pereira-Santana

et al. 2021

IJMS

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Nitrate transporter 2 (NRT2) and NRT3 or nitrate-assimilation-related 2 (NAR2) proteins families form a two-component, high-affinity nitrate transport system, which is essential for the acquisition of nitrate from soils with low N availability. An extensive phylogenomic analysis across land plants for these families has not been performed. In this study, we performed a microsynteny and orthology analysis on the NRT2 and NRT3 genes families across 132 plants (Sensu lato) to decipher their evolutionary history. We identified significant differences in the number of sequences per taxonomic group and different genomic contexts within the NRT2 family that might have contributed to N acquisition by the plants. We hypothesized that the greater losses of NRT2 sequences correlate with specialized ecological adaptations, such as aquatic, epiphytic, and carnivory lifestyles. We also detected expansion on the NRT2 family in specific lineages that could be a source of key innovations for colonizing contrasting niches in N availability. Microsyntenic analysis on NRT3 family showed a deep conservation on land plants, suggesting a high evolutionary constraint to preserve their function. Our study provides novel information that could be used as guide for functional characterization of these gene families across plant lineages.

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Section: Discussionmentioning

confidence: 99%

Phylogenomic and Microsynteny Analysis Provides Evidence of Genome Arrangements of High-Affinity Nitrate Transporter Gene Families of Plants

Zoghbi-Rodríguez

Gamboa-Tuz

Pereira-Santana

et al. 2021

IJMS

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“…Indica usually has higher nitrogen uptake capacity and nitrogen use e ciency than japonica (Hu et al 2015;Islam et al 2021), thus the yield per plant of japonica is often lower than that of indica. Haplotype analysis revealed that Hap2 could improve both appearance quality and CEQ of rice, but the yield per plant of Hap2 was also the lowest among the four main haplotypes (Fig.…”

Section: Discussionmentioning

confidence: 99%

FLOURY ENDOSPERM19 encoding a class I glutamine amidotransferase affects grain quality in rice

et al. 2021

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As a staple food for more than half of the world's population, the importance of rice is self-evident.Compared with ordinary rice, rice cultivars with superior eating quality and appearance quality are more popular with consumers due to its unique taste and ornamental value, even if their price is much higher. Appearance quality and CEQ (cooking and eating quality) are two very important aspects in the evaluation of rice quality. Here, we performed a genome-wide association study on chalkiness rate in a diverse panel of 533 cultivated rice accessions. We identi ed a batch of potential chalky genes and prioritize one (LOC_Os03g48060) for functional analyses. Two oury outer endosperm mutants ( o19-1 and o19-2) were generated through editing LOC_Os03g48060 (named as FLO19 in this study), which encodes a class I glutamine amidotransferase. The different performance of the two mutants in various storage substances directly led to completely different changes in CEQ. The mutation of FLO19 gene caused the damage of carbon and nitrogen metabolism in rice, which affected the normal growth and development of rice, including decreased plant height and yield loss by decreased grain lling rate. Through haplotype analysis, we identi ed a haplotype of FLO19 that can improve both CEQ and appearance quality of rice, Hap2, which provides a selection target for rice quality improvement, especially for high-yield indica rice varieties.

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“…The combination of N and water stress has been recently reported ( Islam et al, 2021 ) and, in our dryland condition, may be useful to identify genotypes within our panel that are more able to maintain NUE performance under water stress. This approach could also highlight tolerance mechanisms in the ancient genotypes included in our study, providing valuable genotype for improving NUE under a Mediterranean environment.…”

Section: Introductionmentioning

confidence: 90%

Nitrogen Use Efficiency in Durum Wheat Under Different Nitrogen and Water Regimes in the Mediterranean Basin

et al. 2021

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Improving nitrogen use efficiency (NUE) represents one of the main goals to reduce N input in maximizing crop yield for sustainable agriculture. A NUE key strategy is the exploitation of genetic variation in available germplasm together with the understanding of molecular mechanisms governing this complex trait. Thus, NUE, its components, nitrogen uptake efficiency (NUpE) and nitrogen utilization efficiency (NUtE), and NUE-related traits heritability were evaluated in ancient (Cappelli, Capeiti, Russello, and Mazzancoio) and modern (Messapia, Tiziana, Svevo, and Normanno) wheat genotypes for tackling nitrogen (N) and/or water limitation in both growth chamber and field experiments. Our results exhibited a reduction of NUE, NUpE, and NUtE under water and combined (nitrogen + water) stress in all the genotypes, as expected. The contribution of genetic variability on phenotypic variation was significant for NUtE, harvest index, post-anthesis nitrogen uptake (PANU), and biomass production traits. Moreover, the stress tolerance indexes, calculated and bi-plotted for N and water stresses, exhibited two distinct clusters for many traits as then confirmed by principal component analysis. Although modern varieties showed higher crop yield and NUE under conventional N and water regimes, ancient varieties exhibited best performances to cope with both stresses, mainly under water limitation. Finally, the usage index, which takes into account total biomass increase, underlined that old genotypes were less affected by both stresses during crop cycle. In particular, these genotypes showed the best performances for NUE and its components under both stresses at stem elongation and milk ripening as shown also by PANU. In addition, at these stages, nitrate and ammonium transporter gene expressions in the root were performed, showing the highest activity in ancient varieties. In conclusion, the identification of NUE traits during a specific crop cycle stage, under both N and water limitation, will help in the breeding of more resilient varieties in Mediterranean sustainable agriculture by reducing N supply.

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Genetic regulation of the traits contributing to wheat nitrogen use efficiency

Cited by 37 publications

References 304 publications

Phylogenomic and Microsynteny Analysis Provides Evidence of Genome Arrangements of High-Affinity Nitrate Transporter Gene Families of Plants

Phylogenomic and Microsynteny Analysis Provides Evidence of Genome Arrangements of High-Affinity Nitrate Transporter Gene Families of Plants

FLOURY ENDOSPERM19 encoding a class I glutamine amidotransferase affects grain quality in rice

Nitrogen Use Efficiency in Durum Wheat Under Different Nitrogen and Water Regimes in the Mediterranean Basin

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