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Nitrogen and Sulfur Effects on Brassica
Research Guide
What is Nitrogen and Sulfur Effects on Brassica?
Nitrogen and Sulfur Effects on Brassica refers to the molecular, biochemical, and agronomic impacts of nitrogen and sulfur nutrition on Brassica species, including sulfur assimilation pathways, sulfate transporters, glucosinolate biosynthesis, and improvements in seed yield and oil content in crops like oilseed rape and canola.
This field encompasses over 40,955 papers on transporters and enzymes in sulfur metabolism in photosynthetic organisms, with a focus on Arabidopsis thaliana and Brassica crops. Studies examine sulfate transporters, metabolic responses to sulfur deprivation, and nitrogen management to enhance seed yield in winter oilseed rape. Interactions between nitrogen and sulfur affect nutrient uptake and canola yield.
Topic Hierarchy
Research Sub-Topics
Sulfate Transporters in Arabidopsis
This sub-topic investigates SULTR gene families, their regulation, localization, and transport kinetics in sulfate uptake and distribution. Researchers use mutants and expression studies to elucidate functions.
Sulfur Assimilation Pathways
This sub-topic covers enzymes like APS reductase, sulfite reductase, and O-acetylserine(thiol)lyase in reductive sulfur assimilation. Researchers study pathway flux and transcriptional controls under varying conditions.
Methionine Biosynthesis Regulation
This sub-topic explores genetic and metabolic regulation of methionine synthesis from cysteine, including feedback inhibition and compartmentation. Researchers analyze mutants for yield improvements.
Sulfur Deprivation Responses
This sub-topic examines transcriptomic, metabolic, and physiological adaptations to sulfur starvation, including remobilization and glucosinolate adjustments. Researchers identify signaling hubs like SLIM1.
Nitrogen Sulfur Interactions in Oilseed Rape
This sub-topic studies synergies between N and S fertilization on seed yield, oil content, and protein quality in Brassica napus. Researchers conduct field trials optimizing nutrient ratios.
Why It Matters
Nitrogen and sulfur nutrition directly influences seed yield and oil content in Brassica napus, enabling integrated management strategies for oilseed rape production. For instance, Chalhoub et al. (2014) in "Early allopolyploid evolution in the post-Neolithic Brassica napus oilseed genome" revealed the genomic basis of this crop, supporting breeding for improved nutrient responses. Halkier and Gershenzon (2006) in "BIOLOGY AND BIOCHEMISTRY OF GLUCOSINOLATES" detailed sulfur-rich defense compounds in Brassica, which impact pest resistance and nutritional quality in agriculture. Noctor et al. (2011) in "Glutathione in plants: an integrated overview" showed glutathione's role in sulfur metabolism, aiding stress tolerance in canola under varying nitrogen and sulfur supplies. Maathuis (2009) in "Physiological functions of mineral macronutrients" outlined macronutrient functions, including nitrogen and sulfur uptake, critical for optimizing yields in Brassica farming.
Reading Guide
Where to Start
"BIOLOGY AND BIOCHEMISTRY OF GLUCOSINOLATES" by Halkier and Gershenzon (2006) provides a foundational overview of sulfur-rich compounds central to Brassica metabolism, making it ideal for initial reading.
Key Papers Explained
Halkier and Gershenzon (2006) in "BIOLOGY AND BIOCHEMISTRY OF GLUCOSINOLATES" establishes sulfur-dependent defense pathways, which Chalhoub et al. (2014) in "Early allopolyploid evolution in the post-Neolithic Brassica napus oilseed genome" connects to genomic evolution in oilseed rape for yield improvement. Noctor et al. (2011) in "Glutathione in plants: an integrated overview" builds on this by detailing glutathione's integration in sulfur responses, while Maathuis (2009) in "Physiological functions of mineral macronutrients" links nitrogen and sulfur uptake mechanistically.
Paper Timeline
Most-cited paper highlighted in red. Papers ordered chronologically.
Advanced Directions
Current work focuses on molecular regulations of sulfate transporters and nitrogen-sulfur interplay in Brassica under deprivation, as seen in the 40,955-paper cluster emphasizing Arabidopsis and oilseed crop responses.
Papers at a Glance
| # | Paper | Year | Venue | Citations | Open Access |
|---|---|---|---|---|---|
| 1 | A TWO‐STAGE TECHNIQUE FOR THE <i>IN VITRO</i> DIGESTION OF FOR... | 1963 | Grass and Forage Science | 6.5K | ✕ |
| 2 | Early allopolyploid evolution in the post-Neolithic <i>Brassic... | 2014 | Science | 2.5K | ✓ |
| 3 | BIOLOGY AND BIOCHEMISTRY OF GLUCOSINOLATES | 2006 | Annual Review of Plant... | 2.2K | ✕ |
| 4 | A Further Examination of the Molecular Weight and Size of Deso... | 1954 | Journal of the America... | 2.2K | ✕ |
| 5 | Glutathione in plants: an integrated overview | 2011 | Plant Cell & Environment | 1.5K | ✓ |
| 6 | Genome analysis in Brassica with special reference to the expe... | 1935 | — | 1.4K | ✕ |
| 7 | Therapeutic targeting of the NRF2 and KEAP1 partnership in chr... | 2019 | Nature Reviews Drug Di... | 1.3K | ✓ |
| 8 | Sulfolobus: A new genus of sulfur-oxidizing bacteria living at... | 1972 | Archives of Microbiology | 1.3K | ✕ |
| 9 | Nitrogen Metabolism in the Rumen | 2005 | Journal of Dairy Science | 1.3K | ✓ |
| 10 | Physiological functions of mineral macronutrients | 2009 | Current Opinion in Pla... | 1.1K | ✕ |
Frequently Asked Questions
What role do glucosinolates play in Brassica sulfur metabolism?
Glucosinolates are sulfur-rich natural products in Brassica that hydrolyze via myrosinases to produce isothiocyanates and other defense compounds. Halkier and Gershenzon (2006) in "BIOLOGY AND BIOCHEMISTRY OF GLUCOSINOLATES" explain their biosynthesis depends on sulfur assimilation pathways. These compounds enhance plant defense against herbivores and pathogens.
How does sulfur deprivation affect Brassica metabolic pathways?
Sulfur deprivation triggers metabolic responses involving sulfate transporters and assimilatory enzymes in Brassica and Arabidopsis thaliana. Studies in this cluster highlight gene expression changes under sulfur limitation. This leads to altered biosynthetic pathways for sulfur-containing compounds like glutathione.
What is the impact of nitrogen and sulfur on oilseed rape yield?
Nitrogen management combined with sulfur improves seed yield and oil content in winter oilseed rape. Research in this area integrates nutrient strategies to optimize Brassica production. Chalhoub et al. (2014) in "Early allopolyploid evolution in the post-Neolithic Brassica napus oilseed genome" provides genomic insights supporting such improvements.
How does glutathione function in plant sulfur nutrition?
Glutathione, a sulfur-containing tripeptide, is essential for plant development and stress responses in Brassica. Noctor et al. (2011) in "Glutathione in plants: an integrated overview" describe its roles in redox homeostasis and sulfur metabolism. It cannot be fully replaced by homologues in photosynthetic organisms.
What are the physiological roles of nitrogen and sulfur as macronutrients?
Nitrogen and sulfur serve as essential macronutrients for protein synthesis, enzyme function, and metabolic pathways in Brassica. Maathuis (2009) in "Physiological functions of mineral macronutrients" details their uptake and roles in growth. Deficiencies impair nutrient uptake and crop yield in oilseed species.
Open Research Questions
- ? How do interactions between nitrogen and sulfur transporters regulate gene expression under dual nutrient deprivation in Brassica napus?
- ? What genetic mechanisms control the balance between glucosinolate biosynthesis and seed oil accumulation in response to sulfur limitation?
- ? How can sulfur assimilation pathways be engineered to enhance canola yield under varying nitrogen supplies?
- ? What are the long-term effects of sulfur depletion on polyploid genome stability in oilseed rape?
Recent Trends
The field maintains 40,955 works with sustained focus on sulfur assimilation and nitrogen management in Brassica, as evidenced by high citations to Chalhoub et al. on Brassica napus genomics and Halkier and Gershenzon (2006) on glucosinolates, without noted growth rate changes or recent preprints.
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