Research activity information

• Identification and Validation of QTLs for Yield and Yield Components under Long-Term Salt Stress Using IR64 CSSLs in the Genetic Background of Koshihikari and Their Backcross Progenies

  Nguyen Sao Mai, Dao Duy Hanh, Mai Nakashima, Kotaro Kumamoto, Nguyen Thi Thu Thuy, Tohru Kobata, Kuniyuki Saitoh, Yoshihiko Hirai

  Lead, Aug. 2021, Agriculture, 11(777) (777), English, No password

  [Refereed]

  Scientific journal

  添付ファイルのURL


• QTL mapping for salt tolerance at reproductive stage in rice: A minireview

  Nguyen Sao Mai, Yoshihiko Hirai

  Lead, Apr. 2021, Journal of Environmental Science for Sustainable Society, 10(MR08) (MR08), English, No password

  添付ファイルのURL


• Identification and Characterization of Chromosome Regions Associated With Salinity Tolerance in Rice

  Nguyen Thi Thu Thuy, Misato Tokuyasu, Nguyen Sao Mai, Yoshihiko Hirai

  Rice, the major crop sustaining approximately half the world population, has been extensively reported to be sensitive to saline conditions. However, the genetic and physiological understanding related to long-term salinity stress remains unclear so far. The aim of this study was to evaluate the mechanisms of salinity tolerance in a salinity-tolerant variety of rice, Nona Bokra, and to detect the chromosomal regions responsible for it. We utilized chromosome segment substitution lines (CSSLs) carrying segments from Nona Bokra in the genetic background of a salt-sensitive variety Koshihikari by investigating the plant growth, grain productivity, and ion contents in plants subjected to long-term salinity stress. Comparison of plant growth and grain yield of CSSLs grown under long-term saline conditions suggests that the salinity tolerance of Nona Bokra involves the improvement of plant dry matter, panicle number, and percentage of ripened grains. Nona Bokra has the chromosomal regions for the improvement of the panicle number on chromosome 2 and the percentage of ripened grains on chromosome 6 or 10 under salinity conditions. It was suggested that these chromosomal regions were related to Na+ and Cl- exclusion. Low Na+ and Cl- contents in whole plant at full heading stage would be vital for improving the yield under long-term saline conditions.

  Canadian Center of Science and Education, Oct. 2018, Journal of Agricultural Science, 10(11) (11), 57 - 57

  Scientific journal


• Fractionation of phenolic compounds from Sonneratia apetala pneumatophores and their bioactivities

  Nguyen Sao Mai, Dao Van Tan

  Sonneratia apetala pneumatophore samples were collected from Xuan Thuy National Park, and then 80% methanol extract was fractionated through Sephadex LH-20 column chromatography. After elution with 95% ethanol and 50% acetone, two phenolic fractions were obtained from the crude extract of of S. apetala pneumatophore. The acetone fraction consisted of tannins having high antioxidant activity, 1.14 times higher than that of ascorbic acid. This fraction also have higher activity of α-amylase inhibition (IC50 0.83 mg/mL) and R. sativus root growth inhibition (IC50 6.4 mg/mL) than did the ethanol fraction. In contrast, ethanol fraction consisted of low-molecular phenolic compounds having inhibitory effects on Samonella tiphimurium growth. Such antibacterial activity was not observed in the acetone extract. Citation: Nguyen Sao Mai, Dao Van Tan, 2017. Fractionation of phenolic compounds from Sonneratia apetala pneumatophores and their bioactivities. Tap chi Sinh hoc, 39(4): 451-456. DOI: 10.15625/0866-7160/v39n4.10708.*Corresponding author: daotanvn@yahoo.comReceived 19 September 2017, accepted 12 December 2017

  Lead, Publishing House for Science and Technology, Vietnam Academy of Science and Technology (Publications), Nov. 2017, TAP CHI SINH HOC, 39(4) (4), 451 - 456, English, No password

  [Refereed]

  Scientific journal

  添付ファイルのURL

• Targeted Base Editing in Rice Using Target-AID in CRISPR-Cas Methods (Volume 3)

  Contributor, Springer Nature, ISBN: 9781071643570

• Analysis of salt tolerant QTLs associated with grain productivity in rice under long-term salt stress using a Koshihikari/IR64 chromosome segment substitution line and its backcross progeny populations

  Nguyen Sao Mai, Yusuke Machida, Mai Fukada, Yoshihiko Hirai

  248th meeting of the Crop Science Society of Japan, Sep. 2019, English

  Poster presentation


• QTL analysis for salt tolerance in rice under long-term salt stress using Koshihikari/IR64 chromosome segment substitution lines and backcross progeny F2 population

  Nguyen Sao Mai, Mai Fukada, Dao Duy Hanh, Yoshihiko Hirai

  247th meeting of the Crop Science Society of Japan, Mar. 2019, English

  Poster presentation