Mapping of QTLs associated with cadmium tolerance and accumulation during seedling stage in rice (Oryza sativa L.)

Xue, Dawei; Chen, Mingcan; Zhang, Guoping

doi:10.1007/s10681-008-9785-3

Cited by 75 publications

(42 citation statements)

References 41 publications

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“…The one-way ANOVA was involved to test the difference of means among lines of DH population and parents by using shortest significant ranges (SSR) test. The whole project of QTL analysis was conducted according to the methods reported by Xue et al (2009).…”

Section: Data and Weighted Function Analysismentioning

confidence: 99%

“…Quantitative trait loci (QTL) mapping, as an appulsively common and powerful approach for genetic dissection, has brought numerously distinguished fruits about metal stress tolerance for rice, such as cadmium (Ishikawa et al 2005;Deniau et al 2006;Xue et al 2009), aluminum (Nguyen et al 2001;Ma et al 2002;Xue et al 2006), zinc (Deniau et al 2006;Dong et al 2006), ferrous iron (Wu et al 1997;Wan et al 2003) and manganese (Wang et al 2002). However, there is no report about the genetic analysis of QTL related to Cr tolerance and accumulation in rice so far.…”

Section: Introductionmentioning

confidence: 99%

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Identification of Cr-tolerant lines in a rice (Oryza sativa) DH population

et al. 2010

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Identification of Cr-tolerant lines in a rice DH population was conducted based on the modified weighted function analysis. The significant difference was found between the two parents and among DH population lines, with lines 117, 101 and parent ZYQ8 showing the high Cr tolerance, lines 41 and 49 showing Cr sensitivity. A dramatic difference also existed in Cr accumulation of plant tissues, with lines 19, 18 and 1, 5 having the minimum and maximum shoot Cr accumulation, respectively, and line 19, parent JX17 and lines 1, 56, ZYQ8 having the minimum and maximum root Cr accumulation, respectively. There was a significant difference in shoot/root ratio of Cr accumulation among the population, with line 18 and parent ZYQ8 ranking the tops and lines 109, 71, 19, parent JX17 ranking the bottoms. Zn uptake and accumulation was reduced when the plants were exposed to Cr stress. In addition, three QTLs were detected, which are, respectively, associated with Cr accumulation in shoot and root, and ratio of shoot to root.

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Section: Data and Weighted Function Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Identification of Cr-tolerant lines in a rice (Oryza sativa) DH population

et al. 2010

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“…Natural variation of a 13-to 23-fold difference in grain Cd concentration in diverse japonica rice germplasm points to plant breeding opportunities in the context of Cd minimization. Cd accumulation related QTLs in rice have been found on Chromosomes 2, 3, 4, 5, 6, 7, 8, 10 and 11 [169][170][171]. Cd minimization related alleles are also found to relate with crop yield.…”

Section: Plant Breedingmentioning

confidence: 93%

Trace Element Management in Rice

Sebastian¹,

Prasad²

2015

Agronomy

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Trace elements (TEs) are vital for the operation of metabolic pathways that promote growth and structural integrity. Paddy soils are often prone to TE limitation due to intensive cultivation and irrigation practices. Apart from this, rice paddies are potentially contaminated with transition metals such as Cd, which are often referred to as toxic TEs. Deficiency of TEs in the soil not only delays plant growth but also causes exposure of plant roots to toxic TEs. Fine-tuning of nutrient cycling in the rice field is a practical solution to cope with TEs deficiency. Adjustment of soil physicochemical properties, biological process such as microbial activities, and fertilization helps to control TEs mobilization in soil. Modifications in root architecture, metal transporters activity, and physiological processes are also promising approaches to enhance TEs accumulation in grains. Through genetic manipulation, these modifications help to increase TE mining capacity of rice plants as well as transport and trafficking of TEs into the grains. The present review summarizes that regulation of TE mobilization in soil, and the genetic improvement of TE acquisition traits help to boost essential TE content in rice grain.

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“…The seedlings were cultured to the one-tip three-leaf stage. The hydroponic nutrient solution was prepared and replaced as described previously (Xue et al, 2009). …”

Section: Experimental Materials and Cultivation Of Rice Seedlingsmentioning

confidence: 99%

A comparative study of stress-related gene expression under single stress and intercross stress in rice

et al. 2015

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ABSTRACT. Plant hormones play important roles in the crosstalk between biotic and abiotic stresses in rice throughout its entire growth period. However, these interactions are not completely understood. In this study, the physiological performance of rice seedlings under a single stress and a sequential combination of various stresses (intercross stress) was determined. We found that catalase, superoxide dismutase, and peroxidase activities and malondialdehyde were highly regulated by intercross stresses. Furthermore, the expression levels of pathogenesisrelated genes and drought stress-related genes under various treatments were analyzed. We demonstrated that under drought-disease intercross stress, the expression levels of the PR4, PAL, and Cht-1 genes were significantly upregulated, while under salt-disease intercross stress, the expression levels of the PR1a, PBZ1, Gns1, and Cht-1 genes underwent significant changes. Regardless of the type of intercross stress, the expression of LOX-RLL was significantly affected. We also showed that the expression of drought stress-related genes OsSKIPa, OsNADPH1, JRC0594, and OsGL1-2 was significantly regulated, suggesting that these genes play important roles in the interaction between biotic and abiotic stresses. We, therefore, conclude that the interactions between various types of biotic and abiotic stresses vary in a complex pattern and would require further in-depth investigation.

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Mapping of QTLs associated with cadmium tolerance and accumulation during seedling stage in rice (Oryza sativa L.)

Cited by 75 publications

References 41 publications

Identification of Cr-tolerant lines in a rice (Oryza sativa) DH population

Identification of Cr-tolerant lines in a rice (Oryza sativa) DH population

Trace Element Management in Rice

A comparative study of stress-related gene expression under single stress and intercross stress in rice

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