Identification of salt-tolerant QTLs with strong genetic background effect using two sets of reciprocal introgression lines in rice

Cheng, Lei; Wang, Yun; Meng, Liang; Hu, Xia; Cui, Yanru; Sun, Yong; Zhu, Linghua; Ali, Jauhar; Xu, Jianlong; Li, Zhikang

doi:10.1139/g11-075

Cited by 86 publications

(78 citation statements)

References 43 publications

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“…Shan et al (2006) detected SSR markers linked to salt tolerance in wheat by using the bulked segregation analysis method combined with SSR markers and then located the salt tolerance-related genes. Cheng et al (2012) Although many EST-SSR markers have been developed from G. hirsutum, G. arboreum, G. raimondii, G. barbadense, and G. herbaceum, no EST-SSR primers have been developed specifically using salt-tolerance ESTs. In this research, 132 pairs of EST-SSR primers were developed based on cotton salt-tolerance ESTs obtained from BLAST with Arabidopsis salt-tolerance genes, so as to serve cotton salt-tolerance molecular breeding efforts.…”

Section: Development Amplification and Characteristics Of The Salt-mentioning

confidence: 99%

Development of EST-SSR markers related to salt tolerance and their application in genetic diversity and evolution analysis in Gossypium

Wang¹,

Zhu²,

Yuán³

et al. 2014

Genet. Mol. Res.

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ABSTRACT. Salt stress is becoming one of the major problems in global agriculture with the onset of global warming, an increasing scarcity of fresh water, and improper land irrigation and fertilization practices, which leads to reduction of crop output and even causes crop death. To speed up the exploitation of saline land, it is a good choice to grow plants with a high level of salt tolerance and economic benefits. As the leading fiber crop grown commercially worldwide, cotton is placed in the moderately salt-tolerant group of plant species, and there is promising potential to improve salt tolerance in cultivated cotton. To facilitate the mapping of salt-tolerant quantitative trait loci in cotton so as to serve the aims of salt-tolerant molecular breeding in cotton, it is necessary to develop salt-tolerant molecular markers. The objective of this research was to develop simple sequence repeat (SSR) markers based on cotton salt-tolerant expressed sequence tags. To test the efficacy of these SSR markers, their polymorphism and cross-species transferability were evaluated, and their value was further investigated on the basis of genetic diversity and evolution analysis.

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Section: Development Amplification and Characteristics Of The Salt-mentioning

confidence: 99%

Development of EST-SSR markers related to salt tolerance and their application in genetic diversity and evolution analysis in Gossypium

Wang¹,

Zhu²,

Yuán³

et al. 2014

Genet. Mol. Res.

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“…Recent studies on molecular quantitative genetics of complex traits demonstrated the fact that even though the germplasms or modern varieties do not show stress tolerance, they do harbor some excellent genes such as drought tolerance Lafitte et al 2006;He et al 2010), salt tolerance (Cheng et al 2012;Wang et al 2012), and cold tolerance (Andaya and Tai 2006;Jiang et al 2008). Such favourable genes were found to be 'hidden' in germplasms, and advance backcross populations appears to be an effective way to mine them by introgressing and further pyramiding favourable genes of parents and different donors with molecular marker technologies Guan et al 2010).…”

Section: Implications For Rice Breeding Of Dtmentioning

confidence: 99%

Drought-tolerance QTLs commonly detected in two sets of reciprocal introgression lines in rice

et al. 2014

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Abstract. Drought is one of the major abiotic stresses limiting rice (Oryza sativa L.) production. Quantitative trait loci (QTLs) for drought tolerance (DT) at the reproductive stage were identified with two sets of reciprocal introgression lines derived from Lemont Â Teqing. In total, 29 and 23 QTLs were identified in the Teqing and Lemont backgrounds, respectively, during the reproductive stage under drought and irrigated conditions for spikelet number per panicle, seed fertility, filled grain weight per panicle, plant height, and grain yield per plant. Most of these QTLs showed obvious differential expressions in response to drought stress. Another 21 QTLs were detected by the ratio of trait values under drought stress relative to the normal irrigation conditions in the two backgrounds. For 28 DT QTLs, the Teqing alleles at 23 loci had increased trait values and could improve DT under drought stress. Only five (17.9%) DT QTLs (QSnp1b, QSnp3a, QSnp11, QSf8, and QGyp2a) were consistently detected in the two backgrounds, clearly suggesting overwhelming genetic background effects on QTL detection for DT. Seven of the DT QTL regions identified were found to share the same genomic regions with previously reported DT-related genes. Introgressing or pyramiding of favourable alleles from Teqing at the validated QTLs (QSnp3a, QSnp11 and QGyp2a) into Lemont background may improve DT level of Lemont.

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“…A large number of quantitative trait loci (QTLs) for seed germination and seedling growth under normal (Cui et al 2002;Zhang et al 2005;Wang et al 2010;Li et al 2011;Cheng et al 2013Cheng et al , 2014, drought (Teng et al 2002;Zhou et al 2006;Kamoshita et al 2008;Hu et al 2011;Ding et al 2011) and salt (Pandit et al 2010;Ahmadi et al 2011;Tian et al 2011;Wang et al 2011b;Cheng et al 2012;Wang et al 2012a, b) conditions have been identified by the traditional biparental mapping approach in rice. However, the genetic relationship of seed germination and/or seedling growth between multiple conditions at the whole-genome level is still unclear.…”

Section: Introductionmentioning

confidence: 99%

Association mapping of seed germination and seedling growth at three conditions in indica rice (Oryza sativa L.)

Jiaan

Yang

et al. 2015

Euphytica

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Seed germination and seedling establishment are critical phases in rice. In this study, 276 indica accessions were used to investigate the genetic control of seed germination and seedling growth under normal, drought and salt conditions by using the trait of germination percentage, germination index and seedling survival percentage. The significant natural variation of seed germination and seedling growth was observed among accessions at three conditions. Correlation analysis showed that the significant and positive relationship between drought and salt stress conditions was observed in seed germination while not in seedling growth. A total of 12, 14 and 9 simple sequence repeat (SSR) markers associated with three traits were identified under normal, drought and salt conditions respectively. Seven and two SSR loci were simultaneously identified at two and three conditions, respectively, five SSR loci each were specific for drought and salt stress condition. By comparing chromosomal positions of the markers here with previously studies, six SSR loci might represent novel. Several accessions with elite performance of seed germination and seedling growth under stress conditions were firstly identified, such as Gulfrose, Kaijiangliushizao, Yangxidao and Xincunheigu. Six cross combinations each for improving seed germination and seedling growth under stress conditions were predicted. The identified elite accessions and alleles might be applicable to improve rice seed germination and seedling growth by the marker-assisted selection approach.

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Identification of salt-tolerant QTLs with strong genetic background effect using two sets of reciprocal introgression lines in rice

Cited by 86 publications

References 43 publications

Development of EST-SSR markers related to salt tolerance and their application in genetic diversity and evolution analysis in Gossypium

Development of EST-SSR markers related to salt tolerance and their application in genetic diversity and evolution analysis in Gossypium

Drought-tolerance QTLs commonly detected in two sets of reciprocal introgression lines in rice

Association mapping of seed germination and seedling growth at three conditions in indica rice (Oryza sativa L.)

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