Genetic architecture of fruit size and shape variation in cucurbits: a comparative perspective

Pan, Yupeng; Wang, Yuhui; McGregor, Cecilia; Liu, Shi; Luan, Feishi; Gao, Meiling; Weng, Yiqun

doi:10.1007/s00122-019-03481-3

Cited by 123 publications

(112 citation statements)

References 156 publications

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“…Several genes underlying the QTLs related to fruit size and shape have been identified in tomatoes and cucurbits [25,29,35]. In our study, the genomic regions carrying mapped QTLs had a large number of genes, making it difficult to identify specific candidates responsible for fruit-associated traits in C. maxima (Supplementary Table S4).…”

Section: Discussionmentioning

confidence: 90%

“…In our study, fruit length was positively correlated with fruit shape index confirming that fruit elongation plays an important role in the determination of C. maxima fruit shape. In cucumber, it was demonstrated that fruit length is highly correlated with fruit shape index [29]. Despite different fruit morphology in C. maxima, it seems that fruit length is also a key component of fruit shape index in this cucurbit crop.…”

Section: Discussionmentioning

confidence: 96%

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Identification of Fruit-Associated QTLs in Winter Squash (Cucurbita maxima Duchesne) Using Recombinant Inbred Lines

Kaźmińska

Hallmann

Korzeniewska

et al. 2020

Genes

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Cucurbita maxima Duchesne squash and pumpkins are cultivated world-wide. Cucurbita maxima fruits are produced for fresh market and are valuable for food processing. Therefore, fruit characteristics and yield are the traits of high economic importance for breeders. To date, the genetic basis of fruit-associated traits in C. maxima have been poorly understood. In the present study, we evaluated fruit-associated traits and conducted quantitative trait locus (QTL) analysis using recombinant inbred lines (RILs) derived from a cross of two inbred lines with different fruit morphotypes. Phenotypic data for nine fruit traits (earliness, weight, number per plant, yield per plant, length and diameter, shape index, flesh thickness, sucrose content and dry matter content) were collected for RILs in two open-field experiments. Pairwise analysis of the phenotypic data revealed correlations among the fruit and yield-associated traits. Using a previously developed genetic map, we identified 26 QTLs for eight traits. The QTLs were found in 10 locations on eight chromosomes of C. maxima. The QTLs were detected across experiments and explained up to 41.4% of the observed phenotypic variations. Major-effect QTLs for multiple fruit-associated traits were clustered on chromosome 4, suggesting that this genomic region has been under selection during diversification and/or domestication of C. maxima.

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Section: Discussionmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 96%

Identification of Fruit-Associated QTLs in Winter Squash (Cucurbita maxima Duchesne) Using Recombinant Inbred Lines

Kaźmińska

Hallmann

Korzeniewska

et al. 2020

Genes

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“…However, the names of the QTL are confusing in the literature. For convenience, following recommendations for QTL naming by Pan et al (2020) and Wang et al (2020), here we developed a QTL nomenclature for naming QTL for seed-related traits, which are presented in Table 1. In brief, SL, SWD, ST, and 100SWT stood for the seed length, seed width, seed thickness and 100-seed weight, respectively.…”

Section: Qtl For Seed Size (Ss) Variation In Major Cucurbit Cropsmentioning

confidence: 99%

Quantitative Trait Loci for Seed Size Variation in Cucurbits – A Review

et al. 2020

Self Cite

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Cucurbits (Cucurbitaceae family) include many economically important fruit vegetable crops such as watermelon, pumpkin/squash, cucumber, and melon. Seed size (SS) is an important trait in cucurbits breeding, which is controlled by quantitative trait loci (QTL). Recent advances have deciphered several signaling pathways underlying seed size variation in model plants such as Arabidopsis and rice, but little is known on the genetic basis of SS variation in cucurbits. Here we conducted literature review on seed size QTL identified in watermelon, pumpkin/squash, cucumber and melon, and inferred 14, 9 and 13 consensus SS QTL based on their physical positions in respective draft genomes. Among them, four from watermelon (ClSS2.2, ClSS6.1, ClSS6.2, and ClSS8.2), two from cucumber (CsSS4.1 and CsSS5.1), and one from melon (CmSS11.1) were majoreffect, stable QTL for seed size and weight. Whole genome sequence alignment revealed that these major-effect QTL were located in syntenic regions across different genomes suggesting possible structural and functional conservation of some important genes for seed size control in cucurbit crops. Annotation of genes in the four watermelon consensus SS QTL regions identified genes that are known to play important roles in seed size control including members of the zinc finger protein and the E3 ubiquitinprotein ligase families. The present work highlights the utility of comparative analysis in understanding the genetic basis of seed size variation, which may help future mapping and cloning of seed size QTL in cucurbits.

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“…OVATE-like proteins have been identified in all land plants, including the early-diverged land plants Physcomitrella patens (moss) and Selaginella moellendorffii (spikemoss) [16]. Genome searches of sequenced land plants using the tomato OVATE protein revealed that all the plants examined contain OFPs, with 31 OsOFPs in the rice genome [33], 19 AtOFPs in the Arabidopsis genome [16], 19 CsOFPs in cucumber, 18 CmOFPs in melon, and 17 ClOFPs in watermelon [30]. In radish, 35 unique putative RsOFPs were identified from three radish genome databases.…”

Section: Discussionmentioning

confidence: 99%

“…In addition, CsOFP1a and ClOFP1a are clustered in the same clade as tomato SlOFP20. Thus, CsOFP1a and ClOFP1a are considered top candidates for the two QTLs in cucumber and watermelon, respectively [30]. However, whether OFPs in radish play a role in tuberous root shape formation remains unclear.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the OFP Gene Family and its Putative Involvement of Tuberous Root Shape in Radish

Wang

et al. 2020

IJMS

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The shape of the tuberous root, a very important quality trait, varies dramatically among radish cultivars. Ovate family proteins (OFPs) are plant-specific proteins that regulate multiple aspects of plant growth and development. To investigate the possible role of OFPs in radish tuberous root formation, 35 putative RsOFPs were identified from radish, and their expression patterns were detected during tuberous root development in six different radish cultivars. Phylogenetically, RsOFP2.3 clustered together with AtOFP1 and other members of this family that are known to regulate organ shape. Moreover, RsOFP2.3 expression was negatively correlated with tuberous root elongation after the cortex splitting stage, which made this gene the top candidate for the involvement of tuberous root shape. To further characterize the function of RsOFP2.3, it was ectopically expressed in Arabidopsis. RsOFP2.3 overexpression in Arabidopsis led to multiple phenotypical changes, especially the decreased length and increased width of the hypocotyl. Furthermore, RsOFP2.3 expression was induced by all the five classic plant hormones except ethylene, and it was most sensitive to exogenous gibberellic acid treatment. We also found that RsOFP2.3 was localized in the cytoplasm. Taken together, our results suggested the possible involvement for RsOFP2.3 in suppressing radish tuberous root elongation and that it encodes a functional protein which mainly inhibits the elongation of Arabidopsis aerial organs.

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Genetic architecture of fruit size and shape variation in cucurbits: a comparative perspective

Cited by 123 publications

References 156 publications

Identification of Fruit-Associated QTLs in Winter Squash (Cucurbita maxima Duchesne) Using Recombinant Inbred Lines

Identification of Fruit-Associated QTLs in Winter Squash (Cucurbita maxima Duchesne) Using Recombinant Inbred Lines

Quantitative Trait Loci for Seed Size Variation in Cucurbits – A Review

Characterization of the OFP Gene Family and its Putative Involvement of Tuberous Root Shape in Radish

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