Thai jasmine rice cultivar KDML105 carrying Saltol QTL exhibiting salinity tolerance at seedling stage

Punyawaew, Kanchana; Suriya-arunroj, Duangjai; Siangliw, Meechai; Thida, M.; Lanceras-Siangliw, J.; Fukai, S.; Toojinda, Theerayut

doi:10.1007/s11032-016-0574-8

Cited by 15 publications

(10 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2 ). The improved KD-SKC1-FL showed greater tolerance, with a lower Na/K ratio and higher yield under salt stress at 10–12 ds m − 1 (Punyawaew et al 2016 ). One elite line was released to farmers under the name “RD73” by the Thailand Rice Department in 2017.…”

Section: Adapting Kdml To High-saline Soilmentioning

confidence: 99%

Thai Hom Mali Rice: Origin and Breeding for Subsistence Rainfed Lowland Rice System

Vanavichit

Kamolsukyeunyong

Siangliw

et al. 2018

Rice

View full text Add to dashboard Cite

The world-renowned Thai Hom Mali Rice has been the most important aromatic rice originating in Thailand. The aromatic variety was collected from Chachoengsao, a central province, and after pure-line selection, it was officially named as Khao Dawk Mali 105, (KDML105). Because of its superb fragrance and cooking quality, KDML105 has been a model variety for studying genes controlling grain quality and aroma. The aromatic gene was cloned in KDML105, as an amino aldehyde dehydrogenase (AMADH) or better known as BADH2 located on chromosome 8. Later on, all other aromatic rice genes were discovered as allelic to the AMADH. As a selection of local landrace variety found in rainfed areas, the Thai Jasmine rice showed adaptive advantages over improved irrigated rice in less fertile lowland rainfed conditions. Because KDML105 was susceptible to most diseases and insect pests, marker-assisted backcross selection (MABC) was used for the genetic improvement since 2000. After nearly 17 years of MABC for integrating new traits into KDML105, a new generation of KDML105, designated HM84, was developed which maintains the cooking quality and fragrance, and has gained advantages during flash flooding, disease, and insect outbreak.Electronic supplementary materialThe online version of this article (10.1186/s12284-018-0212-7) contains supplementary material, which is available to authorized users.

show abstract

Section: Adapting Kdml To High-saline Soilmentioning

confidence: 99%

Thai Hom Mali Rice: Origin and Breeding for Subsistence Rainfed Lowland Rice System

Vanavichit

Kamolsukyeunyong

Siangliw

et al. 2018

Rice

View full text Add to dashboard Cite

show abstract

“…Pokkali and Nona Bokra have been largely used as donors in breeding programs for the marker-assisted selection of salinity tolerance and varieties as tolerant as the donor parent, such as BRRI Dhan 47, have been released [ 39 ]. Although excellent results were obtained by introgressing the Saltol QTL into mega-varieties [ 36 , 39 – 41 ], this QTL alone is not sufficient to obtain a high degree of salt tolerance under all conditions and stages. A pyramiding approach was proposed several decades ago [ 22 ] and Ahmadi et al [ 30 ] showed that even for tolerance at the vegetative stage, the crossing design might involve a large number of accessions that carry different tolerance mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Tolerance to mild salinity stress in japonica rice: A genome-wide association mapping study highlights calcium signaling and metabolism genes

Frouin¹,

Languillaume²,

Mas³

et al. 2018

PLoS ONE

View full text Add to dashboard Cite

Salinity tolerance is an important quality for European rice grown in river deltas. We evaluated the salinity tolerance of a panel of 235 temperate japonica rice accessions genotyped with 30,000 SNP markers. The panel was exposed to mild salt stress (50 mM NaCl; conductivity of 6 dS m-1) at the seedling stage. Eight different root and shoot growth parameters were measured for both the control and stressed treatments. The Na+ and K+ mass fractions of the stressed plants were measured using atomic absorption spectroscopy. The salt treatment affected plant growth, particularly the shoot parameters. The panel showed a wide range of Na+/K+ ratio and the temperate accessions were distributed over an increasing axis, from the most resistant to the most susceptible checks. We conducted a genome-wide association study on indices of stress response and ion mass fractions in the leaves using a classical mixed model controlling structure and kinship. A total of 27 QTLs validated by sub-sampling were identified. For indices of stress responses, we also used another model that focused on marker × treatment interactions and detected 50 QTLs, three of which were also identified using the classical method. We compared the positions of the significant QTLs to those of approximately 300 genes that play a role in rice salt tolerance. The positions of several QTLs were close to those of genes involved in calcium signaling and metabolism, while other QTLs were close to those of kinases. These results reveal the salinity tolerance of accessions with a temperate japonica background. Although the detected QTLs must be confirmed by other approaches, the number of associations linked to candidate genes involved in calcium-mediated ion homeostasis highlights pathways to explore in priority to understand the salinity tolerance of temperate rice.

show abstract

“…Under salt stress, the yield of YNU31-2-4 was significantly higher than that of Yukinko-mai [99]; Bimpong et al used marker-assisted selection to develop salt-tolerant rice cultivars through introgressing Saltol into the lowland cultivar, Rassi, and obtained 16 introgression lines for further African-wide testing prior to release in six West African countries [100]. Pauyawaew et al introgressed Saltol into KDML105 by two rounds of marker-assisted backcrossing, and introgression lines with positive Saltol alleles are being tested for salinity tolerance in the salt-affected areas in the northeast of Thailand [101]. All these results suggest that SNP marker-assisted selection breeding is a fast and effective method to improve rice salt tolerance.…”

Section: Biotechnology Promises To Accelerate Breeding Of Salt-toleramentioning

confidence: 99%

Advances and Challenges in the Breeding of Salt-Tolerant Rice

Qin

Huang

2020

IJMS

112

View full text Add to dashboard Cite

Soil salinization and a degraded ecological environment are challenging agricultural productivity and food security. Rice (Oryza sativa), the staple food of much of the world’s population, is categorized as a salt-susceptible crop. Improving the salt tolerance of rice would increase the potential of saline-alkali land and ensure food security. Salt tolerance is a complex quantitative trait. Biotechnological efforts to improve the salt tolerance of rice hinge on a detailed understanding of the molecular mechanisms underlying salt stress tolerance. In this review, we summarize progress in the breeding of salt-tolerant rice and in the mapping and cloning of genes and quantitative trait loci (QTLs) associated with salt tolerance in rice. Furthermore, we describe biotechnological tools that can be used to cultivate salt-tolerant rice, providing a reference for efforts aimed at rapidly and precisely cultivating salt-tolerance rice varieties.

show abstract

Thai jasmine rice cultivar KDML105 carrying Saltol QTL exhibiting salinity tolerance at seedling stage

Cited by 15 publications

References 59 publications

Thai Hom Mali Rice: Origin and Breeding for Subsistence Rainfed Lowland Rice System

Thai Hom Mali Rice: Origin and Breeding for Subsistence Rainfed Lowland Rice System

Tolerance to mild salinity stress in japonica rice: A genome-wide association mapping study highlights calcium signaling and metabolism genes

Advances and Challenges in the Breeding of Salt-Tolerant Rice

Contact Info

Product

Resources

About