Genetic Architecture Underpinning Yield Components and Seed Mineral–Nutrients in Sesame
Genetic dissection of yield components and seed mineral-nutrient is crucial for understanding plant physiological and biochemical processes and alleviate nutrient malnutrition. Sesame (<i>Sesamum indicum</i> L.) is an orphan crop that harbors rich allelic repertoire for seed mineral–nutr...
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doaj-4374ce3b2f994fbf9b086d740e1443bc2020-11-25T03:45:08ZengMDPI AGGenes2073-44252020-10-01111221122110.3390/genes11101221Genetic Architecture Underpinning Yield Components and Seed Mineral–Nutrients in SesameNaama Teboul0Yaron Gadri1Zipi Berkovich2Ram Reifen3Zvi Peleg4The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot 7610001, IsraelThe Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot 7610001, IsraelInstitute of Biochemistry, Food Science and Nutrition, The Hebrew University of Jerusalem, Rehovot 7610001, IsraelInstitute of Biochemistry, Food Science and Nutrition, The Hebrew University of Jerusalem, Rehovot 7610001, IsraelThe Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot 7610001, IsraelGenetic dissection of yield components and seed mineral-nutrient is crucial for understanding plant physiological and biochemical processes and alleviate nutrient malnutrition. Sesame (<i>Sesamum indicum</i> L.) is an orphan crop that harbors rich allelic repertoire for seed mineral–nutrients. Here, we harness this wide diversity to study the genetic architecture of yield components and seed mineral–nutrients using a core-collection of worldwide genotypes and segregating mapping population. We also tested the association between these traits and the effect of seed nutrients concentration on their bio-accessibility. Wide genetic diversity for yield components and seed mineral–nutrients was found among the core-collection. A high-density linkage map consisting of 19,309 markers was constructed and used for genetic mapping of 84 QTL associated with yield components and 50 QTL for seed minerals. To the best of our knowledge, this is the first report on mineral–nutrients QTL in sesame. Genomic regions with a cluster of overlapping QTL for several morphological and nutritional traits were identified and considered as genomic hotspots. Candidate gene analysis revealed potential functional associations between QTL and corresponding genes, which offers unique opportunities for synchronous improvement of mineral–nutrients. Our findings shed-light on the genetic architecture of yield components, seed mineral–nutrients and their inter- and intra- relationships, which may facilitate future breeding efforts to develop bio-fortified sesame cultivars.https://www.mdpi.com/2073-4425/11/10/1221bioavailabilitybiofortificationironQTL co-localizationmacronutrientsmicronutrient |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Naama Teboul Yaron Gadri Zipi Berkovich Ram Reifen Zvi Peleg |
spellingShingle |
Naama Teboul Yaron Gadri Zipi Berkovich Ram Reifen Zvi Peleg Genetic Architecture Underpinning Yield Components and Seed Mineral–Nutrients in Sesame Genes bioavailability biofortification iron QTL co-localization macronutrients micronutrient |
author_facet |
Naama Teboul Yaron Gadri Zipi Berkovich Ram Reifen Zvi Peleg |
author_sort |
Naama Teboul |
title |
Genetic Architecture Underpinning Yield Components and Seed Mineral–Nutrients in Sesame |
title_short |
Genetic Architecture Underpinning Yield Components and Seed Mineral–Nutrients in Sesame |
title_full |
Genetic Architecture Underpinning Yield Components and Seed Mineral–Nutrients in Sesame |
title_fullStr |
Genetic Architecture Underpinning Yield Components and Seed Mineral–Nutrients in Sesame |
title_full_unstemmed |
Genetic Architecture Underpinning Yield Components and Seed Mineral–Nutrients in Sesame |
title_sort |
genetic architecture underpinning yield components and seed mineral–nutrients in sesame |
publisher |
MDPI AG |
series |
Genes |
issn |
2073-4425 |
publishDate |
2020-10-01 |
description |
Genetic dissection of yield components and seed mineral-nutrient is crucial for understanding plant physiological and biochemical processes and alleviate nutrient malnutrition. Sesame (<i>Sesamum indicum</i> L.) is an orphan crop that harbors rich allelic repertoire for seed mineral–nutrients. Here, we harness this wide diversity to study the genetic architecture of yield components and seed mineral–nutrients using a core-collection of worldwide genotypes and segregating mapping population. We also tested the association between these traits and the effect of seed nutrients concentration on their bio-accessibility. Wide genetic diversity for yield components and seed mineral–nutrients was found among the core-collection. A high-density linkage map consisting of 19,309 markers was constructed and used for genetic mapping of 84 QTL associated with yield components and 50 QTL for seed minerals. To the best of our knowledge, this is the first report on mineral–nutrients QTL in sesame. Genomic regions with a cluster of overlapping QTL for several morphological and nutritional traits were identified and considered as genomic hotspots. Candidate gene analysis revealed potential functional associations between QTL and corresponding genes, which offers unique opportunities for synchronous improvement of mineral–nutrients. Our findings shed-light on the genetic architecture of yield components, seed mineral–nutrients and their inter- and intra- relationships, which may facilitate future breeding efforts to develop bio-fortified sesame cultivars. |
topic |
bioavailability biofortification iron QTL co-localization macronutrients micronutrient |
url |
https://www.mdpi.com/2073-4425/11/10/1221 |
work_keys_str_mv |
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