Genetic Map of Mango: A Tool for Mango Breeding

Kuhn, David N.; Bally, I. S. E.; Dillon, Natalie; Innes, David J.; Groh, Amy; Rahaman, Jordon; Ophir, Ron; Cohen, Yuval; Sherman, Amir

doi:10.3389/fpls.2017.00577

Cited by 67 publications

(69 citation statements)

References 31 publications

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“…However, the subsequent genetic evidence proved that poly-embryony in mango is actually under the control of a single dominant locus. A study conducted by Kuhn et al (2017) reported a significant association between a single locus with the dimorphic seed type (mono-embryonic and poly-embryonic) in Linkage Group 8 (LG8). Their study also suggested that a heterozygous dominant allele regulates polyembryony, while the homozygous recessive allele regulates monoembryony.…”

Section: Discussionmentioning

confidence: 99%

Assessment of diversity and population structure of mango (Mangifera indica L.) germplasm based on microsatellite (SSR) markers

Razak¹,

Azman²,

Ismail³

et al. 2019

Aust J Crop Sci

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The assessment of genetic diversity is essential for the conservation and breeding purposes. This study aimed to assess and evaluate the genetic diversity of 116 accessions of mango (Mangifera indica) germplasm using microsatellite markers. The DNA was extracted from young fresh leaf before genotyping using microsatellites to determine the allele size. The analysis of 20 polymorphic microsatellite markers revealed a total of 122 alleles ranging from two (MiIIHR10, MiIIHR21, and MiIIHR25) to 11 alleles per locus (MiIIHR28 and MiIIHR30) with an average of 6.1. The mean polymorphic information content (PIC) value was 0.4585 which ranged between 0.0081 (MiIIHR10) to 0.9573 (MiIIHR28). The UPGMA dendrogram indicated that the accessions were divided into two major clusters, which were divided into several sub-clusters based on their genetic distance matrix values. Some accessions were highly similar to each other, probably due to the duplication of collected accessions or insufficient microsatellite markers to differentiate them. The analysis of the population structure of the individuals also showed two subpopulations, suggesting that the accessions could be separated into two groups, which supported the generated dendrogram. The findings of this study facilitate improved conservation management of the germplasm and help to find strategies for future breeding activities.

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Section: Discussionmentioning

confidence: 99%

Assessment of diversity and population structure of mango (Mangifera indica L.) germplasm based on microsatellite (SSR) markers

Razak¹,

Azman²,

Ismail³

et al. 2019

Aust J Crop Sci

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“…The generation of a large number of mango varieties have progressively speeded its wide-reaching distribution in the world 7 . Although some cytogenetics data 8 , genetic mapping 9,10 and transcriptomics data 11,12 are publicly available, the lack of chromosome-level high-quality mango reference genome sequences has seriously hampered our understanding of the genetic basis of specialized phytochemical composites and allele mining in genomics-assisted breeding for mango improvement.…”

Section: Background and Summarymentioning

confidence: 99%

SMRT sequencing generates the chromosome-scale reference genome of tropical fruit mango,Mangifera indica

Zhu

Zhang

et al. 2020

Preprint

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Mango (Mangifera indica), a member of the family Anacardiaceae, is one of the world’s most popular tropical fruits. Here we sequenced the variety, “Hong Xiang Ya”, and generated a 371.6-Mb mango genome assembly with 34,529 predicted protein-coding genes. Aided with the published genetic map, for the first time, we assembled the M. indica genome to the chromosomes, and finally about 98.77% of the genome assembly was anchored to 20 pseudo-chromosomes. The availability of the chromosome-length genome assembly of M. indica will provide novel insights into genome evolution, understand the genetic basis of specialized phytochemical composites relevant to fruit quality, and enhance allele mining in genomics-assisted breeding for mango genetic improvement.

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“…Despite the availability of cytogenetics data [9], transcriptome data [10,11], and genetic maps [12,13], whole-genome resources for mangoes are still publically unavailable, which creates difficulties in genomic-based trait improvement and understanding of specialized Anacardiaceae biochemistry underneath. To conquer this, we sequenced and assembled the chromosome-level genome of mangoes.…”

Section: Introductionmentioning

confidence: 99%

The genome evolution and domestication of tropical fruit mango

et al. 2020

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Background: Mango is one of the world's most important tropical fruits. It belongs to the family Anacardiaceae, which includes several other economically important species, notably cashew, sumac and pistachio from other genera. Many species in this family produce family-specific urushiols and related phenols, which can induce contact dermatitis. Results: We generate a chromosome-scale genome assembly of mango, providing a reference genome for the Anacardiaceae family. Our results indicate the occurrence of a recent whole-genome duplication (WGD) event in mango. Duplicated genes preferentially retained include photosynthetic, photorespiration, and lipid metabolic genes that may have provided adaptive advantages to sharp historical decreases in atmospheric carbon dioxide and global temperatures. A notable example of an extended gene family is the chalcone synthase (CHS) family of genes, and particular genes in this family show universally higher expression in peels than in flesh, likely for the biosynthesis of urushiols and related phenols. Genome resequencing reveals two distinct groups of mango varieties, with commercial varieties clustered with India germplasms and demonstrating allelic admixture, and indigenous varieties from Southeast Asia in the second group. Landraces indigenous in China formed distinct clades, and some showed admixture in genomes. Conclusions: Analysis of chromosome-scale mango genome sequences reveals photosynthesis and lipid metabolism are preferentially retained after a recent WGD event, and expansion of CHS genes is likely associated with urushiol biosynthesis in mango. Genome resequencing clarifies two groups of mango varieties, discovers allelic admixture in commercial varieties, and shows distinct genetic background of landraces.

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Genetic Map of Mango: A Tool for Mango Breeding

Cited by 67 publications

References 31 publications

Assessment of diversity and population structure of mango (Mangifera indica L.) germplasm based on microsatellite (SSR) markers

Assessment of diversity and population structure of mango (Mangifera indica L.) germplasm based on microsatellite (SSR) markers

SMRT sequencing generates the chromosome-scale reference genome of tropical fruit mango,Mangifera indica

The genome evolution and domestication of tropical fruit mango

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