Identification of a Rice stripe necrosis virus resistance locus and yield component QTLs using Oryza sativa × O. glaberrima introgression lines

  title={Identification of a Rice stripe necrosis virus resistance locus and yield component QTLs using Oryza sativa × O. glaberrima introgression lines},
  author={Andr{\'e}s Gutierrez and Silvio James Carabal{\'i} and Olga Ximena Giraldo and C{\'e}sar P. Mart{\'i}nez and Fernando Corr{\^e}a and Gustavo A. Prado and Joe Tohme and Mathias Lorieux},
  journal={BMC Plant Biology},
  pages={6 - 6}
BackgroundDeveloping new population types based on interspecific introgressions has been suggested by several authors to facilitate the discovery of novel allelic sources for traits of agronomic importance. Chromosome segment substitution lines from interspecific crosses represent a powerful and useful genetic resource for QTL detection and breeding programs.ResultsWe built a set of 64 chromosome segment substitution lines carrying contiguous chromosomal segments of African rice Oryza… 

Chromosome Segment Substitution Lines: A Powerful Tool for the Introgression of Valuable Genes from Oryza Wild Species into Cultivated Rice (O. sativa)

An overview of the research involving CSSLs and BILs in the introgression of quantitative trait loci (QTLs) associated with the improved performance of rice including resistance to various biotic and abiotic stresses, and even high yield from wild relatives of rice and other unadapted germplasm into the genetic background of adapted rice cultivars is presented.

Construction of rice chromosome segment substitution lines harboring Oryza barthii genome and evaluation of yield-related traits

Results suggest that alleles from O. barthii might be used as a novel genetic resource for improving the yield-related traits in cultivars of O. sativa.

A Genetic Resource for Rice Improvement:introgression Library of Agronomic Traits for All AA Genome Species in Genus Oryza

This introgression library provided the powerful resource for future rice improvement and genetic dissection of allelic variations and selections of favorable alleles that are present in wild relatives proceed the driving force of the rice domestication.

Development and evaluation of Oryza glaberrima Steud. chromosome segment substitution lines (CSSLs) in the background of O. sativa L. cv. Koshihikari

It is suggested that alleles from the African rice may be useful in improving traits related to grain yield and plant stature in existing cultivars of O. sativa.

Identification and Fine Mapping of Pi69(t), a New Gene Conferring Broad-Spectrum Resistance Against Magnaporthe oryzae From Oryza glaberrima Steud

Evaluation of IL106 with 151 blast strains collected from 6 countries in Asia showed that 148 strains are avirulent on IL106, suggesting that Pi69(t) is a broad-spectrum blast R gene, and a promising resistant resource for improvement of Asian cultivated rice.

Construction of a new set of rice chromosome segment substitution lines and identification of grain weight and related traits QTLs

A new set of chromosome segment substitution lines (CSSLs) in rice, in which the genome of the elite japonica cultivar C418 has been introgressed into the background of the Elite indica cultivar 9311, was developed by marker aided selection.

Development of introgression lines of AA genome Oryza species, O. glaberrima, O. rufipogon, and O. nivara, in the genetic background of O. sativa L. cv. Taichung 65

Three sets of CSSLs carrying segments of AA genome species closely related to Oryza sativa are developed through the use of 101 to 121 simple-sequence-repeat markers in whole-genome genotyping and marker-assisted selection.

Introgression Lines: Valuable Resources for Functional Genomics Research and Breeding in Rice (Oryza sativa L.)

The narrow base of genetic diversity of modern rice varieties is mainly attributed to the overuse of the common backbone parents that leads to the lack of varied favorable alleles in the process of

Development and exploitation of a set of contiguous segmental substitution lines in pearl millet[Pennisetum glaucum (L.) R. Br.]

The present results validate these QTLs which were detected in earlier studies using testcrosses of an advanced backcross population derived from two agronomically elite parental lines and provide a nearly ideal set of genetic stocks for fine mapping the multitude of traits for which their parents differ, and use in unraveling the genetic and physiological mechanisms of several agronomeically important but complexly inherited traits.

Genetic characterization and fine mapping of qHMS4 responsible for pollen sterility in hybrids between Oryza sativa L. and Oryza glaberrima Steud

African cultivated rice (Oryza glaberrima Steud) contains many favorable genes for tolerance to biotic and abiotic stresses and F1 hybrids between Asian cultivated rice (Oryza sativa L.) show strong

QTL mapping and introgression of yield-related traits from Oryza glumaepatula to cultivated rice (Oryza sativa) using microsatellite markers

Positive QTL effects from O. glumaepatula were observed in chromosomal regions associated with tillering and panicle-number traits, and could be a source of alleles of agronomic importance to rice breeding programs.

Construction of introgression lines carrying wild rice (Oryza rufipogon Griff.) segments in cultivated rice (Oryza sativa L.) background and characterization of introgressed segments associated with yield-related traits

It is revealed that the high-yielding and low-Yielding ILs contained relatively less introgressed segments than the low-y yielding ILs, and that the yield increase or decrease was mainly due to the number of grain.

RFLP Mapping and QTL Analysis of Heading Date and Pollen Sterility Using Backcross Populations between Oryza sativa L. and Oryza glaberrima Steud.

An RFLP Iinkage map based on backcross population (BC1F1) was constructed and a wide region showed a significant association with the trait, suggesting the existence of a powerful male-sterility gene.

QTL detection for rice grain quality traits using an interspecific backcross population derived from cultivated Asian (O. sativa L.) and African (O. glaberrima S.) rice.

Results suggested that genes from O. glaberrima may be useful in improving specific grain quality characteristics in high-yielding O. sativa hybrid cultivars.

QTL mapping of grain quality traits from the interspecific cross Oryza sativa × O. glaberrima

Results from this study suggest that the African rice might be a valuable new source for introgression and improvement of several traits that affect quality traits demanded by the different rice export markets.

Development of a wide population of chromosome single-segment substitution lines in the genetic background of an elite cultivar of rice (Oryza sativa L.).

A wide population consisting of 217 chromosome single-segment substitution lines (SSSLs) using HJX74, an elite Indica cultivar, as recipient, and 6 other accessions, including 2 Indica and 4 Japonica, as donors is developed to facilitate the genetic analysis of complex traits and the use of marker-assisted breeding in rice.

An introgression line population of Lycopersicon pennellii in the cultivated tomato enables the identification and fine mapping of yield-associated QTL.

A novel population consisting of 50 introgression lines originating from a cross between the green-fruited species Lycopersicon pennellii and the cultivated tomato (cv M82) is presented, which provides complete coverage of the genome and a set of lines nearly isogenic to M82.

Reciprocal chromosome segment substitution series derived from japonica and indica cross of rice (Oryza sativa L.)

The reciprocal substitution set appeared to be an efficient and systematic method for QTL precision analysis and consistent reciprocal QTL effects for heading date and grain size were observed in both IAS and AIS.

Assessing hybrid sterility in Oryza glaberrima × O. sativa hybrid progenies by PCR marker analysis and crossing with wide compatibility varieties

Monitoring of reproductive plant development showed that spikelet sterility was at least partially due to an arrest of pollen development at the microspore stage, which suggests that distinct or additional S-loci are responsible for sterility of O. glaberrima × O. sativa indica hybrids.

RFLP analysis of rice (Oryza sativa L.) introgression lines

None of the RFLP markers could be unambiguously associated with BPH resistance, and some of the introgressed segments show association with genes for brown planthopper (BPH) resistance in some introgression lines, but not in others.