Molecular marker association for yellow stem borer resistance in rice

Selvi, A.; Shanmugasundaram, P.; Raja, Joseph A. J.; Mohankumar, S.

doi:10.1142/9789812814319_0105

Cited by 3 publications

(4 citation statements)

References 1 publication

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“…As suggested by Selvi et al. (), weedy or wild recipients of different genotypes may have evolved diverse tolerances to the target insects, which can considerably affect the damage of the weedy or wild plants under the same insect pressure. If a weedy rice parent has the genetic background that is originally more resistant to target insects, the insect‐resistant transgenes may convey a lower fecundity advantage to its crop‐weed hybrid progeny.…”

Section: Discussionmentioning

confidence: 99%

Ambient insect pressure and recipient genotypes determine fecundity of transgenic crop‐weed rice hybrid progeny: Implications for environmental biosafety assessment

Xia

Zhang

Wei

et al. 2016

Evolutionary Applications

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Transgene introgression into crop weedy/wild relatives can provide natural selective advantages, probably causing undesirable environmental impact. The advantages are likely associated with factors such as transgenes, selective pressure, and genetic background of transgene recipients. To explore the role of the environment and background of transgene recipients in affecting the advantages, we estimated the fitness of crop‐weed hybrid lineages derived from crosses between marker‐free insect‐resistant transgenic (Bt/CpTI) rice with five weedy rice populations under varied insect pressure. Multiway anova indicated the significant effect of both transgenes and weedy rice genotypes on the performance of crop‐weed hybrid lineages in the high‐insect environment. Increased fecundity was detected in most transgene‐present F1 and F2 hybrid lineages under high‐insect pressure, but varied among crop‐weed hybrid lineages with different weedy rice parents. Increased fecundity of transgenic crop‐weed hybrid lineages was associated with the environmental insect pressure and genotypes of their weedy rice parents. The findings suggest that the fitness effects of an insect‐resistant transgene introgressed into weedy populations are not uniform across different environments and genotypes of the recipient plants that have acquired the transgene. Therefore, these factors should be considered when assessing the environmental impact of transgene flow to weedy or wild rice relatives.

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Section: Discussionmentioning

confidence: 99%

Ambient insect pressure and recipient genotypes determine fecundity of transgenic crop‐weed rice hybrid progeny: Implications for environmental biosafety assessment

Xia

Zhang

Wei

et al. 2016

Evolutionary Applications

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“…Genetic variation among wild populations interacted with the crop genomes in a non‐uniform manner, leading to fitness differences among hybrids produced from different cross‐combinations. In addition, previous studies indicated that wild plants of different genetic background may have evolved diverse tolerances to the target insects (Selvi et al ., ; Alagar et al ., ), which can strongly affect the insect damage of the hybrid plants under the same insect pressure, resulting in various fitness responses to target insects.…”

Section: Discussionmentioning

confidence: 98%

Persistence of transgenes in wild rice populations depends on the interaction between genetic background of recipients and environmental conditions

Dong

Xiao

Ouyang

et al. 2017

Annals of Applied Biology

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The persistence of transgenes in wild populations may cause unintended ecological consequences, and the possibility of transgenes' persistence and introgression is dependent on fitness performance of transgenic crop-wild hybrids. To investigate the effects of transgene and genotype × environment on the fitness of crop-wild rice hybrids, a total of 11 cross-combination progenies between insect-resistant transgene (CpTI and Bt/CpTI) rice lines and wild rice (Oryza rufipogon) were evaluated at different sites with contrasting insect treatments. The results showed that fitness performance varied between transgenic hybrids having different wild parents and under different environmental conditions, indicating that fitness effects of transgenes on hybrid progenies depend heavily on the genetic background of recipient plants and growing environment. Significant fitness advantages conferred by transgenes were found only in some hybrids under high insect pressure condition, demonstrating that the level of target insects in the field environment influences the persistence and spread of insect-resistant transgenes in wild rice populations. These findings suggest that evolutionary fate of escaped transgenes is different in wild populations with diverse genetic backgrounds under various environmental conditions.

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“…Also, they investigated and described the possibility of screening for yellow stemborer resistance using micro satellite markers. This marker, RM241, located on chromosome 4, was also found to be associated with the trait and is closed to the genes for yellow stemborer resistance (Selvi et al 2003).…”

Section: Stem Borermentioning

confidence: 93%

“…Such damage results in reduced plant vigor, fewer tillers, and many unfilled spikelets (Pathak and Khan 1994). Selvi et al (2002) reported the identification of RAPD markers associated with yellow stemborer resistance and susceptibility, the markers C1320 and K6695 were linked with resistance and AH5660 and C41300 with susceptibility. The markers K6695 and AH5660 were linked to the genes at distances of 12.8 cM and 14.9 cM, respectively, their sufficiently closer linkage to the genes regulating the trait and their unambiguous scorability in the resistant and susceptible cultivars were tested.…”

Section: Stem Borermentioning

confidence: 99%

Current Applicable DNA Markers for Marker Assisted Breeding in Abiotic and Biotic Stress Tolerance in Rice (Oryza sativa L.)

Nogoy¹,

Song²,

Ouk³

et al. 2016

Plant Breed. Biotech.

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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. ABSTRACT Abiotic and biotic stresses adversely affect rice (Oryza sativa L.) growth and yield. Conventional breeding is a very effective method to develop tolerant rice variety; however, it takes a decade long to establish a new rice variety. DNA-based markers have a huge potential to improve the efficiency and precision of conventional plant breeding via marker-assisted selection (MAS). The large number of quantitative trait loci (QTLs) mapping studies for rice has provided an abundance of DNA marker-trait associations. The limitations of conventional breeding such as linkage drag and lengthy time consumption can be overcome by utilizing DNA markers in plant breeding. The major applications of DNA markers such as MAS, QTL mapping and gene pyramiding have been surveyed. In this review, we presented the latest markers available for some of the most important abiotic and biotic stresses in rice breeding programs. Achieving a significant impact on crop improvement by marker assisted breeding (MAB) represents the great challenge for agricultural scientists in the next few decades.

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Molecular marker association for yellow stem borer resistance in rice

Cited by 3 publications

References 1 publication

Ambient insect pressure and recipient genotypes determine fecundity of transgenic crop‐weed rice hybrid progeny: Implications for environmental biosafety assessment

Ambient insect pressure and recipient genotypes determine fecundity of transgenic crop‐weed rice hybrid progeny: Implications for environmental biosafety assessment

Persistence of transgenes in wild rice populations depends on the interaction between genetic background of recipients and environmental conditions

Current Applicable DNA Markers for Marker Assisted Breeding in Abiotic and Biotic Stress Tolerance in Rice (Oryza sativa L.)

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