Susceptibility and tolerance of rice crop to salt threat: Physiological and metabolic inspections

PloS One
Nyuk Ling MaMohd Razi Ismail

Abstract

Salinity threat is estimated to reduce global rice production by 50%. Comprehensive analysis of the physiological and metabolite changes in rice plants from salinity stress (i.e. tolerant versus susceptible plants) is important to combat higher salinity conditions. In this study, we screened a total of 92 genotypes and selected the most salinity tolerant line (SS1-14) and most susceptible line (SS2-18) to conduct comparative physiological and metabolome inspections. We demonstrated that the tolerant line managed to maintain their water and chlorophyll content with lower incidence of sodium ion accumulation. We also examined the antioxidant activities of these lines: production of ascorbate peroxidase (APX) and catalase (CAT) were significantly higher in the sensitive line while superoxide dismutase (SOD) was higher in the tolerant line. Partial least squares discriminant analysis (PLS-DA) score plots show significantly different response for both lines after the exposure to salinity stress. In the tolerant line, there was an upregulation of non-polar metabolites and production of sucrose, GABA and acetic acid, suggesting an important role in salinity adaptation. In contrast, glutamine and putrescine were noticeably high in the ...Continue Reading

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Citations

Feb 26, 2019·3 Biotech·Chui-Yao TehMaziah Mahmood
Dec 19, 2019·Metabolites·Ali RazzaqFozia Saleem
Jan 31, 2019·Plants·Anumalla MahenderJauhar Ali
May 6, 2020·International Journal of Molecular Sciences·Stephanie SchaarschmidtEllen Zuther
Dec 4, 2020·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Riti Thapar Kapoor, Mirza Hasanuzzaman
Mar 5, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Pengcheng LiZefeng Yang
Feb 24, 2021·Physiologia Plantarum·Celymar Angela SolisZhong-Hua Chen

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Methods Mentioned

BETA
NMR
salt treatment

Software Mentioned

DA
SIMCA
PLS
MestReNova

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