Potential of Aegilops sp. for Improvement of Grain Processing and Nutritional Quality in Wheat (Triticum aestivum)

Kumar, Aman; Kapoor, Payal; Chunduri, Venkatesh; Sharma, Saloni; Garg, Monika

doi:10.3389/fpls.2019.00308

Cited by 33 publications

(10 citation statements)

References 141 publications

(166 reference statements)

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“…tauschii and Ae. kotschyi show higher grain iron and zinc contents compared with cultivated wheat [257][258][259].…”

Section: Improved Nutritional Qualitymentioning

confidence: 94%

Introducing Beneficial Alleles from Plant Genetic Resources into the Wheat Germplasm

Sharma¹,

Schulthess

Bassi³

et al. 2021

Biology

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Wheat (Triticum sp.) is one of the world’s most important crops, and constantly increasing its productivity is crucial to the livelihoods of millions of people. However, more than a century of intensive breeding and selection processes have eroded genetic diversity in the elite genepool, making new genetic gains difficult. Therefore, the need to introduce novel genetic diversity into modern wheat has become increasingly important. This review provides an overview of the plant genetic resources (PGR) available for wheat. We describe the most important taxonomic and phylogenetic relationships of these PGR to guide their use in wheat breeding. In addition, we present the status of the use of some of these resources in wheat breeding programs. We propose several introgression schemes that allow the transfer of qualitative and quantitative alleles from PGR into elite germplasm. With this in mind, we propose the use of a stage-gate approach to align the pre-breeding with main breeding programs to meet the needs of breeders, farmers, and end-users. Overall, this review provides a clear starting point to guide the introgression of useful alleles over the next decade.

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“…tauschii and Ae. kotschyi show higher grain iron and zinc contents compared with cultivated wheat [257][258][259].…”

Section: Improved Nutritional Qualitymentioning

confidence: 94%

Introducing Beneficial Alleles from Plant Genetic Resources into the Wheat Germplasm

Sharma¹,

Schulthess

Bassi³

et al. 2021

Biology

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“…Modern crop varieties offer decreased genetic diversity compared with that of their wild ancestors. Introgression of alleles from wild ancestors to modern crops has increased iron content, particularly in wheat (146). In addition, some important crops exhibit natural, intraspecific variation in iron content, allowing breeders to attempt iron biofortification through conventional breeding.…”

Section: Current Efforts To Improve Iron Content and Bioavailability mentioning

confidence: 99%

Iron homeostasis and plant immune responses: Recent insights and translational implications

Herlihy

Long

McDowell

2020

Journal of Biological Chemistry

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Iron (Fe) metabolism and the plant immune system are both critical for plant vigor in natural ecosystems and for reliable agricultural productivity. Mechanistic studies of plant iron homeostasis and plant immunity have traditionally been carried out in isolation from each other; however, our growing understanding of both processes has uncovered significant connections. For example, iron plays a critical role in the generation of reactive oxygen intermediates during immunity and has been recently implicated as a critical factor for immune-initiated cell death via ferroptosis. Moreover, plant iron stress triggers immune activation, suggesting that sensing of iron depletion is a mechanism by which plants recognize a pathogen threat. The iron deficiency response engages hormone signaling sectors that are also utilized for plant immune signaling, providing a probable explanation for iron-immunity cross-talk. Finally, interference with iron acquisition by pathogens might be a critical component of the immune response. Efforts to address the global burden of iron deficiency-related anemia, have focused on classical breeding and transgenic approaches to develop crops biofortified for iron content. However, our improved mechanistic understanding of plant iron metabolism suggests that such alterations could promote or impede plant immunity, depending on the nature of the alteration and the virulence strategy of the pathogen. Effects of iron biofortification on disease resistance should be evaluated while developing plants for iron biofortification.

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“…Common wheat is one of the most important staple foods worldwide (Kumar et al., 2019). With the increasing world population, high yield is still one of the main objectives of wheat breeding (Philipp et al., 2018).…”

Section: Introductionmentioning

confidence: 99%

Identification and development of a KASP functional marker of TaTAP46‐5A associated with kernel weight in wheat (Triticum aestivum)

Zhang

Geng

et al. 2021

Plant Breeding

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TAP46 (Type 2A‐phosphatase‐Associated Protein 46 kDa) is homologous to yeast TAP42 or the animal α4 gene and is a crucial gene in the target of rapamycin regulation of protein phosphatase 2A. It has been proven to influence the thousand‐kernel weight (TKW) and kernel size in transgenic wheat. To rapidly identify high‐yield wheat germplasms of TaTAP46, four interlinked single nucleotide polymorphisms were identified by resequencing the TaTAP46‐5A gene in 32 varieties, forming two haplotypes: Hap1 and Hap2. A KASP marker, −1462A/C, was developed to identify Hap1/Hap2. A 157 Chinese wheat mini core collection and 348 Chinese modern collection were constructed for association analysis of the two haplotypes and their phenotypes. The results showed that the Hap1/Hap2 of TaTAP46‐5A was significantly associated with the TKW and kernel size. Hap1 was a favourable haplotype with higher TKW and larger kernel size compared to those of Hap2. Hap1 is a stable high yield type of the TaTAP46 gene that has been continuously selected in high‐yield wheat breeding worldwide. The germplasm of Hap1 can be selected quickly using the KASP primer −1462A/C, to improve breeding efficiency.

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Potential of Aegilops sp. for Improvement of Grain Processing and Nutritional Quality in Wheat (Triticum aestivum)

Cited by 33 publications

References 141 publications

Introducing Beneficial Alleles from Plant Genetic Resources into the Wheat Germplasm

Introducing Beneficial Alleles from Plant Genetic Resources into the Wheat Germplasm

Iron homeostasis and plant immune responses: Recent insights and translational implications

Identification and development of a KASP functional marker of TaTAP46‐5A associated with kernel weight in wheat (Triticum aestivum)

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