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Publication
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| Title of Article |
Physiological traits and metabolic profiles of contrasting rice cultivars under mild salinity stress during the seedling stage |
| Date of Acceptance |
13 June 2023 |
| Journal |
| Title of Journal |
Notulae Botanicae Horti Agrobotanici Cluj-Napoca |
| Standard |
SCOPUS |
| Institute of Journal |
University of Agricultural Sciences and Veterinary Medicine 3-5 Manastur St., 400372, Cluj-Napoca, Romania |
| ISBN/ISSN |
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| Volume |
55 |
| Issue |
2 |
| Month |
มิถุนายน |
| Year of Publication |
2023 |
| Page |
13211 |
| Abstract |
This study aimed to investigate the effects of mild salinity stress on some physiological traits and
metabolic profiles of rice during the seedling stage. Three rice cultivars differing in salinity stress response,
‘KDML105’ (salt-sensitive, local Thai jasmine rice), ‘IR29’ (salt-sensitive rice), and ‘Pokkali’ (salt-tolerant
rice), were subjected to mild salinity stress by flood-irrigated with 40 mM NaCl. Salinity stress significantly
reduces the growth and biomass of the sensitive cultivars. Electrolyte leakage in ‘KDML105’ and ‘IR29’ also
increased significantly while the relative water content (RWC) decreased. However, salinity stress did not
affect growth, electrolyte leakage, and RWC in the tolerant cultivar. Salinity significantly increased Na+/K+
ratio in shoot and root of all cultivars. Nevertheless, the increase of Na+/K+ ratio in ‘KDML105’ and ‘IR29’
was higher than that of ‘Pokkali’. The metabolic profile analysis of ‘KDML105’ showed that uracil, L-proline,
malonate, L-carnitine, L-lactate, and guanine were significantly increased, but the levels of dihydroxyacetone
and glycine were significantly decreased under salinity conditions. In ‘IR29’, L-proline, melatonin, gammaaminobutyrate,
and acetate were significantly increased. In ‘Pokkali’, however, sugar alcohols and sugars were
slightly increased when exposed to salinity conditions. The metabolic pathway analysis revealed one involved
metabolic pathway of ‘KDML105’: aminoacyl-tRNA biosynthesis, and three involved those of ‘IR29’: arginine
proline metabolism, sulfur metabolism, and butanoate metabolism. The difference in the metabolic profile of
the salt-tolerance salt-sensitive cultivars provides new insights to identify additional novel biomarkers that will
help better understand the mechanisms for salt tolerance in rice. |
| Keyword |
1H-NMR; metabolic profiles; physiological traits; rice; salinity stress |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
นานาชาติ |
| citation |
true |
| Part of thesis |
true |
| Attach file |
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| Citation |
0
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Journal Publication
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