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Identification of Rice Accessions Having Cold Tolerance at the Seedling Stage and Development of Novel Genotypic Assays for Predicting Cold Tolerance
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Document Title
Identification of Rice Accessions Having Cold Tolerance at the Seedling Stage and Development of Novel Genotypic Assays for Predicting Cold Tolerance
Author
Yongbin Q. Summat P. Panyawut N. Sikaewtung K. Ditthab K. Tongmark K. Chakhonkaen S. Sangarwut N. Wasinanon T. Kaewmungkun K. Muangprom A.
Affiliations
Institute of Crop Science and Nuclear Technology Utilization Zhejiang Academy of Agricultural Sciences Hangzhou 310021 China; National Center for Genetic Engineering and Biotechnology Thailand Science Park Khlong Luang Pathum Thani 12120 Thailand; Department of Biotechnology Faculty of Science and Technology Thammasat University Rangsit Centre Khlong Luang Pathum Thani12120 Thailand; Nadi District Agricultural Extension Office Chamanan Road Nadi Subdistrict Nadi District Prachinburi25220 Thailand
Type
Article
Source Title
Plants
ISSN
22237747
Year
2023
Volume
12
Issue
1
Open Access
All Open Access Gold Green
Publisher
MDPI
DOI
10.3390/plants12010215
Abstract
Rice is susceptible to cold stress at the seedling stage which can delay growth and decrease yield. We evaluated 187 rice accessions for cold tolerance at the seedling stage and developed genotypic assays for three markers. All japonica (20/20) and 20/140 indica accessions were highly cold tolerant. Two SNP markers specific for COLD1 and LOC_Os10g34840 were practical to use by normal agarose gel. The SNP marker specific for COLD1 was highly specific for predicting cold tolerance. However the sensitivity of this marker was low as several cold-tolerant indica accessions lacked the cold-tolerant allele. The LOC_Os10g34840 marker was slightly more sensitive than the COLD1 marker for predicting highly cold-tolerant accessions. An insertion/deletion variant in the NAC6 gene was identified as a novel cold tolerance marker. The NAC6 marker predicted more highly cold-tolerant accessions compared with the other two markers. The SNP marker specific for LOC_Os10g34840 and the NAC6 marker were present in several tested subgroups suggesting their wide effects and distribution. The three markers combined predicted the most highly cold-tolerant accessions indicating that the marker combination is superior for applications such as marker-assisted breeding. The cold-tolerant accessions and the genotypic marker assays will be useful for future rice breeding. ? 2023 by the authors.
Keyword
cold tolerance | COLD1 | functional markers | LOC_Os10g34840 | NAC | rice germplasm
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 2
Knowledge Taxonomy Level 3
License
CC BY
Rights
Authors
Publication Source
WOS