Crops for the future: on the way to reduce nitrogen pollution

Gramma, Vladislav; Kontbay, Kübra; Wahl, Vanessa

doi:10.1002/ajb2.1527

Cited by 10 publications

(9 citation statements)

References 20 publications

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“…The observations from maize suggest it may be possible to increase the stress tolerance and resource-use efficiency of crops in a manner that is either neutral or beneficial to overall yield potential. Some crop wild relatives exhibit degrees of stress tolerance well outside the range observed in their domesticated relatives, and therefore may employ mechanisms not present in the primary germplasm of crops 14 .…”

Section: Introductionmentioning

confidence: 99%

Genome of Paspalum vaginatum and the role of trehalose mediated autophagy in increasing maize biomass

et al. 2022

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A number of crop wild relatives can tolerate extreme stress to a degree outside the range observed in their domesticated relatives. However, it is unclear whether or how the molecular mechanisms employed by these species can be translated to domesticated crops. Paspalum (Paspalum vaginatum) is a self-incompatible and multiply stress-tolerant wild relative of maize and sorghum. Here, we describe the sequencing and pseudomolecule level assembly of a vegetatively propagated accession of P. vaginatum. Phylogenetic analysis based on 6,151 single-copy syntenic orthologues conserved in 6 related grass species places paspalum as an outgroup of the maize-sorghum clade. In parallel metabolic experiments, paspalum, but neither maize nor sorghum, exhibits a significant increase in trehalose when grown under nutrient-deficit conditions. Inducing trehalose accumulation in maize, imitating the metabolic phenotype of paspalum, results in autophagy dependent increases in biomass accumulation.

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Section: Introductionmentioning

confidence: 99%

Genome of Paspalum vaginatum and the role of trehalose mediated autophagy in increasing maize biomass

et al. 2022

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“…Improving the productivity of crop plants per unit of fertilizer applied would increase the profitability of agriculture while decreasing its environmental impact [13][14][15] . A significant portion of the overall increase in maize yields appears to be explained by selection for increased stress tolerance and yield stability in the decades since the 1930s 16,17 .…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The genome of stress tolerant crop wild relativePaspalum vaginatumleads to increased biomass productivity in the cropZea mays

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Wase

Shu

et al. 2021

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A number of crop wild relatives can tolerate extreme stressed to a degree outside the range observed in their domesticated relatives. However, it is unclear whether or how the molecular mechanisms employed by these species can be translated to domesticated crops. Paspalum Paspalum vaginatum is a self-incompatible and multiply stress-tolerant wild relative of maize and sorghum. Here we describe the sequencing and pseudomolecule level assembly of a vegetatively propagated accession of P. vaginatum. Phylogenetic analysis based on 6,151 single-copy syntenic orthologous conserved in 6 related grass species placed paspalum as an outgroup of the maize-sorghum clade demonstrating paspalum as their closest sequenced wild relative. In parallel metabolic experiments, paspalum, but neither maize nor sorghum, exhibited significant increases in trehalose when grown under nutrient-deficit conditions. Inducing trehalose accumulation in maize, imitating the metabolic phenotype of paspalum, resulting in autophagy dependent increases in biomass accumulation.

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“…Therefore, improvements in yield and N use efficiency (NUE) in conjunction with a reduction in N application and N losses into the environment are pressing goals for a sustainable agriculture (Zhang et al, 2015a;Anas et al, 2020). However, progress in NUE is an ambitious target as crop yields are influenced by numerous factors, including genetic parameters and their variation among and within species (G), environmental effects such as location, soil conditions, and climate (E), and agronomic technologies and management practices (M; e.g., type, timing, amount, and place of N application or weed and pest control) (Hatfield and Walthall, 2015;Nguyen et al, 2017;Martinez-Feria et al, 2018;Nguyen and Kant, 2018;Gramma et al, 2020;Jensen et al, 2020;Lemaire and Ciampitti, 2020;Plett et al, 2020). Only the combination or interaction of these factors (G × E × M) will allow for sustainable and secure crop production (Swarbreck et al, 2019;Cooper et al, 2020;Hawkesford and Riche, 2020;Peng et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Targeting Nitrogen Metabolism and Transport Processes to Improve Plant Nitrogen Use Efficiency

2021

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In agricultural cropping systems, relatively large amounts of nitrogen (N) are applied for plant growth and development, and to achieve high yields. However, with increasing N application, plant N use efficiency generally decreases, which results in losses of N into the environment and subsequently detrimental consequences for both ecosystems and human health. A strategy for reducing N input and environmental losses while maintaining or increasing plant performance is the development of crops that effectively obtain, distribute, and utilize the available N. Generally, N is acquired from the soil in the inorganic forms of nitrate or ammonium and assimilated in roots or leaves as amino acids. The amino acids may be used within the source organs, but they are also the principal N compounds transported from source to sink in support of metabolism and growth. N uptake, synthesis of amino acids, and their partitioning within sources and toward sinks, as well as N utilization within sinks represent potential bottlenecks in the effective use of N for vegetative and reproductive growth. This review addresses recent discoveries in N metabolism and transport and their relevance for improving N use efficiency under high and low N conditions.

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Crops for the future: on the way to reduce nitrogen pollution

Cited by 10 publications

References 20 publications

Genome of Paspalum vaginatum and the role of trehalose mediated autophagy in increasing maize biomass

Genome of Paspalum vaginatum and the role of trehalose mediated autophagy in increasing maize biomass

The genome of stress tolerant crop wild relativePaspalum vaginatumleads to increased biomass productivity in the cropZea mays

Targeting Nitrogen Metabolism and Transport Processes to Improve Plant Nitrogen Use Efficiency

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