Oryza Sativa
Photosynthesis enhanced oxidative stress tolerance in high-yield rice varieties (Oryza sativa var. japonica L.) in the field
Authors: X.D. Wei, L. Jin and X. Li
The objective of this study was to understand varietal differences in photosynthetic characteristics, chlorophyll fluorescence, antioxidant capability, and yield of japonica rice varieties. Nanjing 44, Oryza sativa var. japonica (average yield of 12.7 t/ha), Nanjing 46, and Nanjing 5055 (average yields of 11.3 and 11.5 t/ha) were included as “super&.. Read More»
- Genet. Mol. Res. 15(3):
- gmr.15038247
- DOI:
- 10.4238/gmr.15038247
Natural variation of rice blast resistance gene Pi-d2
Authors: J.B. Li, Y.D. Sun, H. Liu, Y.Y. Wang, Y.L. Jia and M.H. Xu
Studying natural variation in rice resistance genes of cultivated and wild rice relatives can predict resistance stability to rice blast fungus. In the present study, the protein coding regions of the rice R gene Pi-d2 in 35 rice accessions, including Oryza sativa L. subsp. indica Kato (Aus), indica (IND), temperate japonica (TEJ), tropical japonica (TRJ), a.. Read More»
- Genet. Mol. Res. 14(1):
- 2015.February.13.2
- DOI:
- 10.4238/2015.February.13.2
Identification of neutral genes at pollen sterility loci Sd and Se of cultivated rice (Oryza sativa) with wild rice (O. rufipogon) origin
Authors: B. Liu, J.Q. Li, X.D. Liu, M.Q. Shahid, L.G. Shi and Y.G. Lu
Pollen sterility is one of the main hindrances against the utilization of strong intersubspecific (indica-japonica) heterosis in rice. We looked for neutral alleles at known pollen sterility loci Sd and Se that could overcome this pollen sterility characteristic. Taichung 65, a typical japonica cultivar, and its near isogenic .. Read More»
- Genet. Mol. Res. 10(4):
Mapping quantitative trait loci for sheath blight disease resistance in Yangdao 4 rice
Authors: Z.H. Wen, Y.X. Zeng, Z.J. Ji and C.D. Yang
Rice sheath blight (ShB), which is caused by Rhizoctonia solani, has become the most serious rice disease in China. Yangdao 4, a cultivar with partial resistance to ShB, was crossed with Lemont, a susceptible cultivar, to develop mapping populations that were used to analyze quantitative trait loci (QTL) that confer resistance to ShB. QTL analysis were pe.. Read More»
- Genet. Mol. Res. 14(1):
- 2015.March.6.10
- DOI:
- 10.4238/2015.March.6.10
Genome-wide expression analysis of a rice mutant line under salt stress
Authors: K.J. Lee, S.-J. Kwon, J.E. Hwang, S.M. Han, I. Jung, J.-B. Kim, H.-I. Choi, J. Ryu and S.-Y. Kang
Salinity is a major environmental stress to plants. In this study, the ability of plants to tolerate salt was investigated by studying growth, physiological characteristics, and expression levels of genes related to the salt-stress response in the salt-tolerant rice mutant (Till-II-877), which was derived from γ-ray irra.. Read More»
- Genet. Mol. Res. 15(4):
- gmr15048833
- DOI:
- 10.4238/gmr15048833
Incongruent evolution of chromosomal size in rice
Authors: X. Guo, G. Xu, Y. Zhang, X. Wen, W. Hu and L. Fan
To investigate genome size evolution, it is usually informative to compare closely related species that vary dramatically in genome size. A whole genome duplication (polyploidy) that occurred in rice (Oryza sativa) about 70 million years ago has been well documented based on current genome sequencing. The presence of three dis.. Read More»
- Genet. Mol. Res. 5(2):
Evaluation of reference genes for RT-qPCR studies in the leaves of rice seedlings under salt stress
Authors: G.P. Moraes, L.C. Benitez, M.N. do Amaral, I.L. Vighi, P.A. Auler, L.C. da Maia, V.J. Bianchi and E.J.B. Braga
To obtain accurate and reliable results for the expression of genes of interest using quantitative real-time polymerase chain reaction (RT-qPCR) techniques, it is necessary to normalize the data by comparing them to constitutive genes that exhibit uniform expression levels under experimental conditions. In this study, the stability of expression was evalu.. Read More»
- Genet. Mol. Res. 14(1):
- 2015.March.27.24
- DOI:
- 10.4238/2015.March.27.24
Changes in gene expression and catalase activity in Oryza sativa L. under abiotic stress
Authors: I.L. Vighi, L.C. Benitez, M.N. do Amaral, P.A. Auler, G.P. Moraes, G.S. Rodrigues, L.C. da Maia, L.S. Pinto and E.J.B. Braga
Different rice (Oryza sativa L.) genotypes were subjected to high salinity and low temperature (150 mM NaCl and 13°C, respectively) for 0, 6, 24, 48, or 72 h. We evaluated the simultaneous expression of the genes OsCATA, OsCATB, and OsCATC, correlated gene expression with enzyme activity, and verified the regulation of the.. Read More»
- Genet. Mol. Res. 15(4):
- gmr15048977
- DOI:
- 10.4238/gmr15048977
Expression of LTP genes in response to saline stress in rice seedlings
Authors: G.P. Moraes, L.C. Benitez, M.N. do Amaral, I.L. Vighi, P.A. Auler, L.C da Maia, V.J. Bianchi and E.J.B. Braga
Saline stress is one of the primary factors limiting increased rice productivity in the southern region of Brazil. Farming can be affected by salinity that is due to both the origin of the soils as well as the irrigation water. Lipid transfer proteins (LTPs) have many physiological functions, including in the response to saline stress. Therefore, the obje.. Read More»
- Genet. Mol. Res. 14(3):
- 2015.July.27.18
- DOI:
- 10.4238/2015.July.27.18
Effects of low temperature on photosynthetic characteristics in the super-high-yield hybrid rice �Liangyoupeijiu� at the seedling stage
Authors: D.W. Shi, X.D. Wei and G.X. Chen
To elucidate the resistance of high-yield hybrid rice (Oryza sativa L.) at the seedling stage to low temperature, photosynthetic characteristics, such as membrane lipid peroxidation, fatty acid composition, and chloroplast ultrastructure, were investigated in a newly developed super-hybrid rice (‘Liangyoupeijiu’) a.. Read More»
- Genet. Mol. Res. 15(4):
- gmr15049021
- DOI:
- 10.4238/gmr15049021