An ultra-high density map allowed for mapping QTL and candidate genes controlling dry latex yield in rubber tree

Xia, Zhiqiang; Liu, Kede; Zhang, Shengkui; Yu, Wencai; Zou, Meiling; He, Li; Wang, Wenquan

doi:10.1016/j.indcrop.2018.04.057

Cited by 20 publications

(17 citation statements)

References 32 publications

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“…The high number of markers used to construct the new genetic linkage map contributed to both reducing the average interval between two adjacent markers (7.4 cM versus 9.9 cM) [ 14 ] and to increasing the total map length (3525 cM versus 2838 cM) [ 14 ]. Compared to other genetic linkage maps already published for rubber tree, the total lengths of both maps are higher, as the total lengths obtained on other populations were smaller (2144 cM [ 26 ], 2075 cM [ 27 ], 2441 cM [ 11 ], and 2094 cM [ 15 ]). Comparison of length for each linkage group was only possible with previous studies which have SSR markers in common with our work [ 11 , 26 , 27 ].…”

Section: Discussionmentioning

confidence: 59%

“…They show an overall good coherence in the relative lengths of their linkage groups. Conversely, comparisons were not possible with genetic maps constructed without any common marker with other studies [ 15 ]. The fact that the number of linkage groups in our study is superior to the haploid number of chromosomes ( n = 18) in the rubber tree genome is probably because we have linkage groups with a small number of markers in some genomic regions, which will be linked with the others as we add more markers.…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies on rubber tree demonstrated significant repression of HbSus4 under Ethrel treatment, which is consistent with the weakened enzymatic activity of Sus proteins in latex after Ethrel treatment [ 38 ]. These two candidate genes – sieve element occlusion protein and sucrose synthase – were not identified in the recent study of Xia et al [ 15 ], and can therefore be added to the list of genes whose polymorphism can partially explain variations of latex production. Furthermore, the QTL LG02–40 seems to have a determinant influence on circumference increments with a significant additive effect from the parent PR 255 and a significant dominance effect between the alleles of both parents (Table 4 and Additional file 1 : Table S5).…”

Section: Discussionmentioning

confidence: 99%

“…Comparative mapping between the studies by Rattanawong et al [ 13 ] and Souza et al [ 14 ] should be performed for only growth traits because the latter did not map QTLs for latex production in rubber tree. However, more recently, a high density SNP-based genetic map allowed the identification of 17 QTLs involved in the control of dry latex production [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

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QTL detection for growth and latex production in a full-sib rubber tree population cultivated under suboptimal climate conditions

et al. 2018

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BackgroundRubber tree is cultivated in mainly Southeast Asia and is by far the most significant source of natural rubber production worldwide. However, the genetic architecture underlying the primary agronomic traits of this crop has not been widely characterized. This study aimed to identify quantitative trait loci (QTLs) associated with growth and latex production using a biparental population established in suboptimal growth conditions in Brazil.ResultsA full-sib population composed of 251 individuals was developed from crossing two high-producing Asiatic rubber tree cultivars, PR 255 and PB 217. This mapping population was genotyped with microsatellite markers from enriched genomic libraries or transcriptome datasets and single-nucleotide polymorphism (SNP) markers, leading to construction of a saturated multipoint integrated genetic map containing 354 microsatellite and 151 SNP markers. Height and circumference measurements repeated over a six-year period and registration of cumulative latex production during six consecutive months on the same individuals allowed in-depth characterization of the genetic values of several growth traits and precocious latex production. Growth traits, circumference and height, were overall positively correlated, whereas latex production was not correlated or even negatively correlated with growth traits. A total of 86 distinct QTLs were identified, most of which were detected for only one trait. Among these QTLs, 15 were linked to more than one phenotypic trait (up to 4 traits simultaneously). Latex production and circumference increments during the last wintering period were associated with the highest numbers of identified QTLs (eleven and nine, respectively), jointly explaining the most significantly observed phenotypic variances (44.1% and 44.4%, respectively). The most important QTL for latex production, located on linkage group 16, had an additive effect of the male parent PB 217 and corresponded to a QTL at the same position detected in a previous study carried out in Thailand for the biparental population RRIM 600 x PB 217.ConclusionsOur results identified a set of significant QTLs for rubber tree, showing that the performance of modern Asiatic cultivars can still be improved and paving the way for further marker-assisted selection, which could accelerate breeding programs.Electronic supplementary materialThe online version of this article (10.1186/s12870-018-1450-y) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 59%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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QTL detection for growth and latex production in a full-sib rubber tree population cultivated under suboptimal climate conditions

et al. 2018

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“…Rubber trees (Hevea brasiliensis Müll.Arg.) are among the most important commercial sources of high-quality natural rubber in the world [4], which makes rubber trees one of the most important industrial crops for tropical regions in South and Southeast Asia [5]. In Hainan, China, a large number of rubber tree clones have been planted, although the rubber forests are subjected to periodic hurricanes.…”

Section: Introductionmentioning

confidence: 99%

Retrieval of Aerodynamic Parameters in Rubber Tree Forests Based on the Computer Simulation Technique and Terrestrial Laser Scanning Data

Huang

Fan

et al. 2020

Remote Sensing

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Rubber trees along the southeast coast of China always suffer severe damage from hurricanes. Quantitative assessments of the capacity for wind resistance of various rubber tree clones are currently lacking. We focus on a vulnerability assessment of rubber trees of different clones under wind disturbance impacts by employing multidisciplinary approaches incorporating scanned points, aerodynamics, machine learning and computer graphics. Point cloud data from two typical rubber trees belonging to different clones (PR107 and CATAS 7-20-59) were collected using terrestrial laser scanning, and a connection chain of tree skeletons was constructed using a clustering algorithm of machine learning. The concept of foliage clumps based on the trunk and first-order branches was first proposed to optimize rubber tree plot 3D modelling for simulating the wind field and assessing the wind-related parameters. The results from the obtained phenotypic traits show that the variable leaf area index and included angle between the branches and trunk result in variations in the topological structure and gap fraction of tree crowns, respectively, which are the major influencing factors relevant to the rubber tree’s capacity to resist hurricane strikes. The aerodynamics analysis showed that the maximum dynamic pressure, wind velocity and turbulent intensity of the wind-related parameters in rubber tree plots of clone PR107 (300 Pa, 30 m/s and 15%) are larger than that in rubber tree plots of clone CATAS-7-20-59 (120 Pa, 18 m/s and 5%), which results in a higher probability of local strong cyclone occurrence and a higher vulnerability to hurricane damage.

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Development of Molecular Markers in Hevea brasiliensis for Marker-Assisted Breeding

Pootakham

Shearman

Tangphatsornruang

2020

The Rubber Tree Genome

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An ultra-high density map allowed for mapping QTL and candidate genes controlling dry latex yield in rubber tree

Cited by 20 publications

References 32 publications

QTL detection for growth and latex production in a full-sib rubber tree population cultivated under suboptimal climate conditions

QTL detection for growth and latex production in a full-sib rubber tree population cultivated under suboptimal climate conditions

Retrieval of Aerodynamic Parameters in Rubber Tree Forests Based on the Computer Simulation Technique and Terrestrial Laser Scanning Data

Development of Molecular Markers in Hevea brasiliensis for Marker-Assisted Breeding

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