scholarly journals Special issue in honour of Prof. Reto J. Strasser - Additive main effect and digenic epistatic quantitative trait loci for chlorophyll fluorescence traits influencing salt tolerance at seedling stage in rice

2020 ◽  
Vol 58 (SPECIAL ISSUE) ◽  
pp. 595-607
Author(s):  
K. CHATTOPADHYAY ◽  
J. VIJAYAN ◽  
A. RAY ◽  
K. CHAKRABORTY ◽  
R.K. SARKAR
Keyword(s):  
Chlorophyll Fluorescence ◽  
Quantitative Trait Loci ◽  
Salt Tolerance ◽  
Quantitative Trait ◽  
Seedling Stage ◽  
Special Issue ◽  
Main Effect ◽  
Trait Loci

scholarly journals Meta-Analysis of Quantitative Trait Loci Associated with Seedling-Stage Salt Tolerance in Rice (Oryza sativa L.)

Plants ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 33 ◽  
Author(s):  
Md. Islam ◽  
John Ontoy ◽  
Prasanta Subudhi
Keyword(s):  
Quantitative Trait Loci ◽  
Salt Tolerance ◽  
Candidate Genes ◽  
Quantitative Trait ◽  
Oryza Sativa L ◽  
Meta Analysis ◽  
Seedling Stage ◽  
Phenotypic Variance ◽  
A Genome ◽  
Trait Loci

Soil and water salinity is one of the major abiotic stresses that reduce growth and productivity in major food crops including rice. The lack of congruence of salt tolerance quantitative trait loci (QTLs) in multiple genetic backgrounds and multiple environments is a major hindrance for undertaking marker-assisted selection (MAS). A genome-wide meta-analysis of QTLs controlling seedling-stage salt tolerance was conducted in rice using QTL information from 12 studies. Using a consensus map, 11 meta-QTLs for three traits with smaller confidence intervals were localized on chromosomes 1 and 2. The phenotypic variance of 3 meta-QTLs was ≥20%. Based on phenotyping of 56 diverse genotypes and breeding lines, six salt-tolerant genotypes (Bharathy, I Kung Ban 4-2 Mutant, Langmanbi, Fatehpur 3, CT-329, and IARI 5823) were identified. The perusal of the meta-QTL regions revealed several candidate genes associated with salt-tolerance attributes. The lack of association between meta-QTL linked markers and the level of salt tolerance could be due to the low resolution of meta-QTL regions and the genetic complexity of salt tolerance. The meta-QTLs identified in this study will be useful not only for MAS and pyramiding, but will also accelerate the fine mapping and cloning of candidate genes associated with salt-tolerance mechanisms in rice.

Mapping of quantitative trait loci for gibberellic acid response at rice (Oryza sativa L.) seedling stage

Plant Science ◽  
2006 ◽  
Vol 170 (1) ◽  
pp. 12-17 ◽  
Author(s):  
Yanjun Dong ◽  
H. Kamiuten ◽  
Zhongnan Yang ◽  
Dongzhi Lin ◽  
T. Ogawa ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Quantitative Trait Loci ◽  
Gibberellic Acid ◽  
Quantitative Trait ◽  
Oryza Sativa L ◽  
Seedling Stage ◽  
Trait Loci

Mapping quantitative trait loci for tolerance to phosphorus-deficiency at the seedling stage in barley

Euphytica ◽  
2017 ◽  
Vol 213 (6) ◽  
Author(s):  
Jingyi Guo ◽  
Guangdeng Chen ◽  
Xizhou Zhang ◽  
Tingxuan Li ◽  
Haiying Yu ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Quantitative Trait ◽  
Phosphorus Deficiency ◽  
Seedling Stage ◽  
Trait Loci

Mapping of quantitative trait loci for cold tolerance at the early seedling stage in landrace rice Xiang 743

Euphytica ◽  
2014 ◽  
Vol 201 (3) ◽  
pp. 401-409 ◽  
Author(s):  
Wenqiang Liu ◽  
Tingting Lu ◽  
Yongchao Li ◽  
Xiaowu Pan ◽  
Yonghong Duan ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Cold Tolerance ◽  
Quantitative Trait ◽  
Seedling Stage ◽  
Trait Loci ◽  
Early Seedling

scholarly journals Chlorophyll Retention and High Photosynthetic Performance Contribute to Salinity Tolerance in Rice Carrying Drought Tolerance Quantitative Trait Loci (QTLs)

Agriculture ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 620
Author(s):  
Noppawan Nounjan ◽  
Wuttipong Mahakham ◽  
Jonaliza L. Siangliw ◽  
Theerayut Toojinda ◽  
Piyada Theerakulpisut
Keyword(s):  
Salt Stress ◽  
Quantitative Trait Loci ◽  
Salt Tolerance ◽  
Drought Tolerance ◽  
Quantitative Trait ◽  
Photosynthetic Performance ◽  
Chromosome 8 ◽  
Recurrent Parent ◽  
Putative Gene ◽  
Trait Loci

Jasmine rice (Oryza sativa L.), or Khao Dawk Mali 105 (KDML105), is sensitive to drought and salt stresses. In this study, two improved drought-tolerant chromosome segment substitution lines (CSSLs) of KDML105 (CSSL8-103 and CSSL8-106), which carry drought tolerance quantitative trait loci (QTLs) on chromosome 8, were evaluated for salt tolerance and were compared with KDML105 and the QTL donor DH103, their parents and the salt-tolerant genotype Pokkali. After being subjected to salt stress for 6 days, 3-week-old seedlings of Pokkali showed the highest salt tolerance. Parameters related to photosynthesis were less inhibited in both CSSLs and the donor DH103, while these parameters were more severely damaged in the recurrent parent KDML105. Albeit a high ratio of Na+/K+, CSSLs and DH103 showed similar or higher contents of soluble sugar and activity of superoxide dismutase (SOD; EC1.15.1.1) compared with Pokkali, indicating possible mechanisms of either tissue or osmotic tolerance in these plants. The expression of a putative gene Os08g41990 (aminotransferase), which is located in DT-QTL and is involved in chlorophyll biosynthesis, significantly decreased under salt stress in KDML105 and CSSL8-103, while no obvious change in the expression of this gene was observed in Pokkali, DH103 and CSSL8-106. This gene might play a role in maintaining chlorophyll content under stress conditions. Taken together, the results of this study indicate that DT-QTL could contribute to the enhancement of photosynthetic performance in CSSL lines, leading to changes in their physiological ability to tolerate salinity stress.

Identification of Quantitative Trait Loci for Alkaline Tolerance at Early Seedling Stage of Japonica Rice Under Alkaline Stress

2009 ◽  
Vol 35 (2) ◽  
pp. 301-308
Author(s):  
Dong-Ling QI ◽  
Gui-Zhen GUO ◽  
Myung-Chul LEE ◽  
Chun-Gang YANG ◽  
Jun-Guo ZHANG ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Quantitative Trait ◽  
Seedling Stage ◽  
Alkaline Stress ◽  
Japonica Rice ◽  
Alkaline Tolerance ◽  
Trait Loci ◽  
Early Seedling

Detection of quantitative trait loci for phosphorus deficiency tolerance at soybean seedling stage

Euphytica ◽  
2009 ◽  
Vol 167 (3) ◽  
pp. 313-322 ◽  
Author(s):  
Dan Zhang ◽  
Hao Cheng ◽  
Leiyue Geng ◽  
Guizhen Kan ◽  
Shiyou Cui ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Quantitative Trait ◽  
Phosphorus Deficiency ◽  
Seedling Stage ◽  
Soybean Seedling ◽  
Trait Loci
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