Polyploidy remodels fruit metabolism by modifying carbon source utilization and metabolic flux in Ponkan mandarin (Citrus reticulata Blanco)

Tan, Feng-Quan; Zhang, Miao; Xie, Kai‐Dong; Fan, Yan-Jie; Song, Xin; Wang, Rong; Wu, Xiaomeng; Zhang, Hongyan; Guo, Wen‐Wu

doi:10.1016/j.plantsci.2019.110276

Cited by 34 publications

(16 citation statements)

References 58 publications

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“…Downregulation of gene expression involved in its transport and uptake in mitochondria like NAD-IDH, GABA-T, and GABP has been observed. Meanwhile, sucrose, fructose, and glucose content are very similar between 2x and 4x fruit, and ripening season does not differ between them, while secondary metabolites such as flavonoids and carotenoids are decreased (Tan et al, 2019). Similar results have been observed in the fruit and seeds of natural allohexaploid pitaya (Hylocereus spp.)…”

Section: Fruit Qualitysupporting

confidence: 72%

“…Similarly, 4x "Ponkan" mandarin has altered accumulation of primary and secondary metabolites in the fruit. Total acid and ascorbic acid, which are the main components of fruit flavor, are higher in the 4x fruit (Tan et al, 2019). Downregulation of gene expression involved in its transport and uptake in mitochondria like NAD-IDH, GABA-T, and GABP has been observed.…”

Section: Fruit Qualitymentioning

confidence: 97%

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Synthetic Polyploidy in Grafted Crops

et al. 2020

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Synthetic polyploids have been extensively studied for breeding in the last decade. However, the use of such genotypes at the agronomical level is still limited. Polyploidization is known to modify certain plant phenotypes, while leaving most of the fundamental characteristics apparently untouched. For this reason, polyploid breeding can be very useful for improving specific traits of crop varieties, such as quality, yield, or environmental adaptation. Nevertheless, the mechanisms that underlie polyploidy-induced novelty remain poorly understood. Ploidy-induced phenotypes might also include some undesired effects that need to be considered. In the case of grafted or composite crops, benefits can be provided both by the rootstock's adaptation to the soil conditions and by the scion's excellent yield and quality. Thus, grafted crops provide an extraordinary opportunity to exploit artificial polyploidy, as the effects can be independently applied and explored at the root and/or scion level, increasing the chances of finding successful combinations. The use of synthetic tetraploid (4x) rootstocks may enhance adaptation to biotic and abiotic stresses in perennial crops such as apple or citrus. However, their use in commercial production is still very limited. Here, we will review the current and prospective use of artificial polyploidy for rootstock and scion improvement and the implications of their combination. The aim is to provide insight into the methods used to generate and select artificial polyploids and their limitations, the effects of polyploidy on crop phenotype (anatomy, function, quality, yield, and adaptation to stresses) and their potential agronomic relevance as scions or rootstocks in the context of climate change.

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Section: Fruit Qualitysupporting

confidence: 72%

Section: Fruit Qualitymentioning

confidence: 97%

Synthetic Polyploidy in Grafted Crops

et al. 2020

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“…Finally, some important genes were verified by real-time PCR, and these results were consistent with our sequencing results. In-depth verification of these important functional genes in the future may reveal important genes that affect pig growth and pork quality and provide a theoretical basis for future genetic breeding of new varieties that meet social needs [58,59].…”

Section: Discussionmentioning

confidence: 99%

Transcriptome analysis of differential gene expression in the longissimus dorsi muscle from Debao and landrace pigs based on RNA-sequencing

Song

Zeng

et al. 2019

Bioscience Reports

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RNA-seq analysis was used to identify differentially expressed genes (DEGs) at the genetic level in the longissimus dorsi muscle from two pigs to investigate the genetic mechanisms underlying the difference in meat quality between Debao pigs and Landrace pigs. Then, these DEGs underwent functional annotation, Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment, and protein–protein interaction (PPI) analyses. Finally, the expression levels of specific DEGs were assessed using qRT-PCR. The reference genome showed gene dosage detection of all samples which showed that the total reference genome comprised 22342 coding genes, including 14743 known and 190 unknown genes. For detection of the Debao pig genome, we obtained 14168 genes, including 13994 known and 174 unknown genes. For detection of the Landrace pig genome, we obtained 14404 genes, including 14223 known and 181 unknown genes. GO analysis and KEGG signaling pathway analysis show that DEGs are significantly related to metabolic regulation, amino acid metabolism, muscular tissue, muscle structure development etc. We identified key genes in these processes, such as FOS, EGR2, and IL6, by PPI network analysis. qRT-PCR confirmed the differential expression of six selected DEGs in both pig breeds. In conclusion, the present study revealed key genes and related signaling pathways that influence the difference in pork quality between these breeds and could provide a theoretical basis for improving pork quality in future genetic thremmatology.

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“…Polyploidy refers to the presence of more than two sets of chromosomes and offers clear advantages for plant evolution. Polyploidy breeding strategies have been widely exploited for citrus rootstock (Grosser et al, 2015;Tan et al, 2015;Rouiss et al, 2017) and to a lesser extent for citrus scion (Tan et al, 2017(Tan et al, , 2019. Citrus trees are mostly diploid (2n = 2× = 18), with few exceptions of polyploidy varieties as the triploid "Tahiti" lime.…”

Section: Introductionmentioning

confidence: 99%

Triploidy in Citrus Genotypes Improves Leaf Gas Exchange and Antioxidant Recovery From Water Deficit

et al. 2021

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The triploidy has proved to be a powerful approach breeding programs, especially in Citrus since seedlessness is one of the main consumer expectations. Citrus plants face numerous abiotic stresses including water deficit, which negatively impact growth and crop yield. In this study, we evaluated the physiological and biochemical responses to water deficit and recovery capacity of new triploid hybrids, in comparison with diploid hybrids, their parents (“Fortune” mandarin and “Ellendale” tangor) and one clementine tree used as reference. The water deficit significantly decreased the relative water content (RWC) and leaf gas exchange (Pnet and gs) and it increased the levels of oxidative markers (H2O2 and MDA) and antioxidants. Compared to diploid varieties, triploid hybrids limited water loss by osmotic adjustment as reflected by higher RWC, intrinsic water use efficiency (iWUE Pnet/gs) iWUE and leaf proline levels. These had been associated with an effective thermal dissipation of excess energy (NPQ) and lower oxidative damage. Our results showed that triploidy in citrus enhances the recovery capacity after a water deficit in comparison with diploids due to better carboxylation efficiency, restored water-related parameters and efficient antioxidant system.

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Polyploidy remodels fruit metabolism by modifying carbon source utilization and metabolic flux in Ponkan mandarin (Citrus reticulata Blanco)

Cited by 34 publications

References 58 publications

Synthetic Polyploidy in Grafted Crops

Synthetic Polyploidy in Grafted Crops

Transcriptome analysis of differential gene expression in the longissimus dorsi muscle from Debao and landrace pigs based on RNA-sequencing

Triploidy in Citrus Genotypes Improves Leaf Gas Exchange and Antioxidant Recovery From Water Deficit

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