Dealing with Zinc and Iron Deficiency in Rice: Combine Strategies to  Fight Hidden Hunger in Developing Countries

Sarma, Ridip; Swamy, H.V. Vijaya Kumara; Shashidhar, H. E.

doi:10.20546/ijcmas.2018.703.224

Cited by 6 publications

(3 citation statements)

References 40 publications

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“…The process of dehulling and milling discards most micronutrients, fatty acids, anti-oxidants, and fiber. As a result, diets over-reliant on white rice risk deficiencies for several nutritional factors (Verma and Shukla, 2011;Sharma et al, 2013;Saneei et al, 2016;Sarma et al, 2018). The focus of rice breeding has long been concentrated on improving the crop's productivity, although some emphasis has been given to improving the size, shape, and amylose content of the grain (Breseghello, 2013;Rao et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

The Genetic Basis and Nutritional Benefits of Pigmented Rice Grain

et al. 2020

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Improving the nutritional quality of rice grains through modulation of bioactive compounds and micronutrients represents an efficient means of addressing nutritional security in societies which depend heavily on rice as a staple food. White rice makes a major contribution to the calorific intake of Asian and African populations, but its nutritional quality is poor compared to that of pigmented (black, purple, red orange, or brown) variants. The compounds responsible for these color variations are the flavonoids anthocyanin and proanthocyanidin, which are known to have nutritional value. The rapid progress made in the technologies underlying genome sequencing, the analysis of gene expression and the acquisition of global 'omics data, genetics of grain pigmentation has created novel opportunities for applying molecular breeding to improve the nutritional value and productivity of pigmented rice. This review provides an update on the nutritional value and health benefits of pigmented rice grain, taking advantage of both indigenous and modern knowledge, while also describing the current approaches taken to deciphering the genetic basis of pigmentation.

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Section: Introductionmentioning

confidence: 99%

The Genetic Basis and Nutritional Benefits of Pigmented Rice Grain

et al. 2020

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“…The regular and high consumption of white rice creates a problem known as the double burden of nutrition. The removal of many essential nutritional components, including phytochemicals, and fiber during the preparation of white rice leads to the development of micronutrient deficiencies among peoples for whom rice is the primary source of calories (Sarma et al ., 2018; Sharma et al ., 2013). Furthermore, white rice tends to have a high glycemic index (GI), the starch being rapidly converted into glucose in the human intestine (Oko et al ., 2012; Valarmathi et al ., 2015).…”

Section: Introductionmentioning

confidence: 99%

The genetics underlying metabolic signatures in a brown rice diversity panel and their vital role in human nutrition

Brotman

Llorente‐Wiegand

Oyong³

et al. 2021

The Plant Journal

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Brown rice (Oryza sativa) possesses various nutritionally dense bioactive phytochemicals exhibiting a wide range of antioxidant, anti-cancer, and anti-diabetic properties known to promote various human health benefits. However, despite the wide claims made about the importance of brown rice for human nutrition the underlying metabolic diversity has not been systematically explored. Non-targeted metabolite profiling of developing and mature seeds of a diverse genetic panel of 320 rice cultivars allowed quantification of 117 metabolites. The metabolite genome-wide association study (mGWAS) detected genetic variants influencing diverse metabolic targets in developing and mature seeds. We further interlinked genetic variants on chromosome 7 (6.06-6.43 Mb region) with complex epistatic genetic interactions impacting multi-dimensional nutritional targets, including complex carbohydrate starch quality, the glycemic index, antioxidant catechin, and rice grain color. Through this nutrigenomics approach rare gene bank accessions possessing genetic variants in bHLH and IPT5 genes were identified through haplotype enrichment. These variants were associated with a low glycemic index, higher catechin levels, elevated total flavonoid contents, and heightened antioxidant activity in the whole grain with elevated anti-cancer properties being confirmed in cancer cell lines. This multi-disciplinary nutrigenomics approach thus allowed us to discover the genetic basis of human health-conferring diversity in the metabolome of brown rice.

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“…The milling process removes many essential nutritional components, including essential micronutrients such as iron and zinc, vitamins, fatty‐acids, phytochemicals, and fiber. This can lead to the development of micronutrient deficiencies among peoples for whom rice is the primary source of calories (Sarma et al., 2018; Sharma et al., 2013; Verma & Shukla, 2011). Furthermore, white rice tends to have a high glycemic index (GI), the starch being rapidly digested in the human intestine (Oko et al., 2012; Valarmathi et al., 2014).…”

Section: Introductionmentioning

confidence: 99%

Unravelling marker trait associations linking nutritional value with pigmentation in rice seed

Mbanjo,

Pasion,

Jones

et al. 2023

The Plant Genome

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While considerable breeding effort has focused on increasing the yields of staple crops such as rice and the levels of micronutrients such as iron and zinc, breeding to address the problems of the double‐burden of malnutrition has received less attention. Pigmented rice has higher nutritional value and greater health benefits compared to white rice. However, the genetic associations underlying pericarp coloration and accumulation of nutritionally valuable compounds is still poorly understood. Here we report the targeted genetic analysis of 364 rice accessions, assessing the genetic relationship between pericarp coloration (measured using multi‐spectral imaging) and a range of phenolic compounds with potential nutritional and health‐promoting characteristics. A genome‐wide association study resulted in the identification of over 280 single nucleotide polymorphisms (SNPs) associated with the traits of interest. Many of the SNPs were associated with more than one trait, colocalization occurring between nutritional traits, and nutritional and color‐related traits. Targeted association analysis identified 67 SNPs, located within 52 candidate genes and associated with 24 traits. Six haplotypes identified within the genes Rc/bHLH17 and OsIPT5 indicated that these genes have an important role in the regulation of a wide range of phenolic compounds, and not only those directly conferring pericarp color. These identified genetic linkages between nutritionally valuable phenolic compounds and pericarp color present not only a valuable resource for the enhancement of the nutritional value of rice but an easy method of selection of suitable genotypes.

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Dealing with Zinc and Iron Deficiency in Rice: Combine Strategies to Fight Hidden Hunger in Developing Countries

Cited by 6 publications

References 40 publications

The Genetic Basis and Nutritional Benefits of Pigmented Rice Grain

The Genetic Basis and Nutritional Benefits of Pigmented Rice Grain

The genetics underlying metabolic signatures in a brown rice diversity panel and their vital role in human nutrition

Unravelling marker trait associations linking nutritional value with pigmentation in rice seed

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