Sulfur and the Production of Rice in Wetland and Dryland Ecosystems

Bell, R.W.

doi:10.2134/agronmonogr50.c13

Cited by 6 publications

(8 citation statements)

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“…While the physiological interplay between members of the sulfate transport pathways in rice is not currently well understood (Mitani- Ueno et al 2018), there is evidence from studies in Arabidopsis indicating that SULTR1-type transporters are essential for uptake of sulfur from the soil (Shibagaki et al 2002;Takahashi et al 2000) while SULTR2-type transporters may play a more critical role for translocation of sulfur from the root to above ground tissues (Bell 2008;Kataoka et al 2004;Maruyama-Nakashita et al 2015;Rausch and Wachter 2005;Takahashi et al 2000). This is consistent with the results of our study as the MS-SNP detected using the imputed regional GWA analysis for the S_shoot phenotype was found to be 24 bp downstream of the SULTR2;1 candidate gene.…”

Section: Shoot Sulfurmentioning

confidence: 99%

Genetic architecture of root and shoot ionomes in rice (Oryza sativa L.)

et al. 2021

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Key message Association analysis for ionomic concentrations of 20 elements identified independent genetic factors underlying the root and shoot ionomes of rice, providing a platform for selecting and dissecting causal genetic variants. Abstract Understanding the genetic basis of mineral nutrient acquisition is key to fully describing how terrestrial organisms interact with the non-living environment. Rice (Oryza sativa L.) serves both as a model organism for genetic studies and as an important component of the global food system. Studies in rice ionomics have primarily focused on above ground tissues evaluated from field-grown plants. Here, we describe a comprehensive study of the genetic basis of the rice ionome in both roots and shoots of 6-week-old rice plants for 20 elements using a controlled hydroponics growth system. Building on the wealth of publicly available rice genomic resources, including a panel of 373 diverse rice lines, 4.8 M genome-wide single-nucleotide polymorphisms, single- and multi-marker analysis pipelines, an extensive tome of 321 candidate genes and legacy QTLs from across 15 years of rice genetics literature, we used genome-wide association analysis and biparental QTL analysis to identify 114 genomic regions associated with ionomic variation. The genetic basis for root and shoot ionomes was highly distinct; 78 loci were associated with roots and 36 loci with shoots, with no overlapping genomic regions for the same element across tissues. We further describe the distribution of phenotypic variation across haplotypes and identify candidate genes within highly significant regions associated with sulfur, manganese, cadmium, and molybdenum. Our analysis provides critical insight into the genetic basis of natural phenotypic variation for both root and shoot ionomes in rice and provides a comprehensive resource for dissecting and testing causal genetic variants.

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Section: Shoot Sulfurmentioning

confidence: 99%

Genetic architecture of root and shoot ionomes in rice (Oryza sativa L.)

et al. 2021

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“…Upon its uptake from roots, a large portion of sulfate is delivered to different above-ground organs via xylem [174,175]. Not much is known about the transporters that contribute to the within-root radial sulfate transport and sulfate loading onto the xylem in the roots of cereal species.…”

Section: Sulfate Long-distance Transport Via Xylemmentioning

confidence: 99%

“…Typically, S is reduced to sulfide species including H 2 S in anaerobic rice paddy field soils [155,156] (Figure 3). H 2 S in the rhizosphere can pose toxicity to rice plants, manifested as "Akiochi" (autumn decline) or "Straighthead" disorders [174,246,247]. H 2 S exhibits toxicity by inhibiting cellular respiration, which results in disruption in root growth and nutrient uptake, ultimately leading to yield loss [174,248,249] (Figure 3).…”

Section: Fe As a Buffer For Sulfide Damage In The Rice Rhizospherementioning

confidence: 99%

“…Tolerance to H 2 S toxicity is associated with the plant's capacity to release oxygen into the rhizosphere [250]. Rhizosphere oxygenation due to ROL can oxidize sulfide to sulfate [174]. Moreover, ROL leads to the formation of ferric (hydr)oxide deposition, called Fe plaque, on the root surface of hydrophyte species, which can buffer H 2 S toxicity by reacting with H 2 S to form insoluble FeS (Figure 4) [174,247,251,252].…”

Section: Fe As a Buffer For Sulfide Damage In The Rice Rhizospherementioning

confidence: 99%

“…Rhizosphere oxygenation due to ROL can oxidize sulfide to sulfate [174]. Moreover, ROL leads to the formation of ferric (hydr)oxide deposition, called Fe plaque, on the root surface of hydrophyte species, which can buffer H 2 S toxicity by reacting with H 2 S to form insoluble FeS (Figure 4) [174,247,251,252]. In agreement, H 2 S damage often becomes evident towards the grain maturity [246,249], during which the rice rhizosphere oxidization capacity due to ROL goes down and Fe plaque on the roots becomes less prominent [253].…”

Section: Fe As a Buffer For Sulfide Damage In The Rice Rhizospherementioning

confidence: 99%

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Potential Implications of Interactions between Fe and S on Cereal Fe Biofortification

Kawakami

Bhullar

2020

IJMS

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Iron (Fe) and sulfur (S) are two essential elements for plants, whose interrelation is indispensable for numerous physiological processes. In particular, Fe homeostasis in cereal species is profoundly connected to S nutrition because phytosiderophores, which are the metal chelators required for Fe uptake and translocation in cereals, are derived from a S-containing amino acid, methionine. To date, various biotechnological cereal Fe biofortification strategies involving modulation of genes underlying Fe homeostasis have been reported. Meanwhile, the resultant Fe-biofortified crops have been minimally characterized from the perspective of interaction between Fe and S, in spite of the significance of the crosstalk between the two elements in cereals. Here, we intend to highlight the relevance of Fe and S interrelation in cereal Fe homeostasis and illustrate the potential implications it has to offer for future cereal Fe biofortification studies.

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Farmers’ fertilizer use gaps relative to government recommendations in the saline coastal zone of the Ganges Delta

Islam

Bell

Miah

et al. 2022

Agron. Sustain. Dev.

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Overuse or underuse of nutrients relative to recommendations is a likely cause of crop yield gaps and an impediment to the achievement of food security. Government-endorsed recommendations are developed to deliver the best evidence-based advice on balanced fertilizer; however, deviations of farmers’ nutrient use from the recommendations are rarely examined. This study chose the salt-affected coastal zone of the Ganges Delta, where low crop productivity and cropping intensity by smallholders limit their income, to determine current nutrient use gaps for the first time of three cropping patterns in two representative districts of Bangladesh. A total of 246 farms were surveyed from three farm sizes. Farmers’ nutrient use gaps were compared with Fertilizer Recommendation Guides published in 2012 (FRG-2012) and 2018 (FRG-2018). Relative to FRG-2012 recommendations, farmers used 12%, 70%, and 11% overdoses of N, P, and K, respectively, under two fully rice-based cropping patterns, but the level of overdoses increased with farm size. Rates of K (14%), S (28%), and Zn use were below the FRG-2012 recommendations, especially for the smallest category of farms. However, the FRG-2018, increased recommended N (5%), K (62%), S (12%), and Zn rates but reduced P (25%) rates for fully rice-based cropping patterns. In contrast with rice, regardless of farm size, farmers applied overdose nutrients to watermelon but compensated with underdoses in the subsequent monsoon rice implying that farmers prioritized fertilizer expenditure on the most profitable crop. For the cropping pattern with watermelon, farmers could reduce the use of N (69%) and P (46%) and increase the use of K (48%), S (5%), and B. Reducing NPK use gaps can save treasury for both the farmers and the governments by 39.1 and 73.8 USD ha -1 , respectively, under fully rice-based cropping patterns. Finally, our findings suggest there is scope to promote crop yields and sustainable intensification through balanced fertilizer use in a vulnerable saline region. Supplementary Information The online version contains supplementary material available at 10.1007/s13593-022-00797-1.

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Sulfur and the Production of Rice in Wetland and Dryland Ecosystems

Cited by 6 publications

References 53 publications

Genetic architecture of root and shoot ionomes in rice (Oryza sativa L.)

Genetic architecture of root and shoot ionomes in rice (Oryza sativa L.)

Potential Implications of Interactions between Fe and S on Cereal Fe Biofortification

Farmers’ fertilizer use gaps relative to government recommendations in the saline coastal zone of the Ganges Delta

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