Chutipaijit, Sutee

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Preferred name
Chutipaijit, Sutee
Alternative Name
Chutipaijit, S.
Main Affiliation
Email
sutee.ch@kmitl.ac.th

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    Item type:Publication,
    High contents of proline and anthocyanin increase protective response to salinity in Oryza sativa L. spp. indica
    (2011-09-01)
    Chutipaijit, Sutee
    ;
    Cha-um, Suriyan
    ;
    Sompornpailin, Kanokporn
    Pigmented rice cultivar is a good candidate for abiotic tolerance especially salt tolerant trait. Physiological and growth parameters of eight indica rice genotypes under control or salt stress conditions were subjected to Hierarchical cluster analysis. From cluster ranking, rice genotypes were classified into two groups, salt-tolerant (Sangyod, Khao Dang, Kulab Dang and TD49) and salt-sensitive genotypes (Klum Sakol, Klum Khonkaen1, Klum Khonkaen2 and Black Sticky Rice). In salt stress (100 mM NaCl), the salt-tolerant genotypes showed the high percentages of proline and anthocyanin more than in the salt-sensitive genotypes. In addition, the photosynthetic pigment stabilizations of stressed-seedlings were positively correlated to the proline (R <sup>2</sup> = 0.98) and anthocyanin (R <sup>2</sup> = 0.70) accumulations. While, the malondialdehyde (MDA) contents of salt-stressed seedlings were negatively correlated to the proline (R <sup>2</sup> = 0.63) and anthocyanin (R <sup>2</sup> = 0.51) accumulations. Moreover, the total antioxidant activity of extraction from stressed-seedlings was assessed using the ABTS (2,2-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid) method. The higher percentages of total antioxidant activity were determined in salt-tolerant (125-199%) than salt-sensitive genotypes (106-113%). From the results it can be concluded that accumulation of above mentioned metabolites is associated with cellular protection and salt detoxification in salinity rice seedlings.
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    Growth of pigmented rice (Oryza sativa L. Cv. Riceberry) exposed to ZnO nanoparticles
    (2019-01-01)
    Samart, Sutichai
    ;
    Chutipaijit, Sutee
    Exposure of plants to nanomaterials has been evaluated to the positive and negative effects on crop growth, metabolism, and productivity. In this research, application of zinc oxide (ZnO) nanoparticles was studied in pigmented rice (Oryza sativa L. cv. Riceberry). Riceberry plants were grown and irrigated for 60 days. After that, Riceberry plants were exposed to ZnO nanoparticles by treating them with 0, 200, 400 or 800 mg L<sup>-1</sup> of ZnO nanoparticles. The plant heights, plant weights, numbers of panicles/clump, photosynthetic pigment contents, and antioxidant enzyme activities were determined. Results showed that 200 mg L<sup>-1</sup> of ZnO nanoparticles induced the high enhancement of plant heights, plant weights, numbers of panicles/clump, total photosynthetic pigment contents, and antioxidant enzyme activities as compared to 400 mg L<sup>-1</sup>, 800 mg L<sup>-1</sup> of ZnO nanoparticles and the control (0 mg L<sup>-1</sup> of ZnO nanoparticles) treatments. Moreover, the contents of anthocyanin accumulation in the rice seeds exposed to ZnO nanoparticles were measured. The seeds of Riceberry plants exposed to 200 mg L<sup>-1</sup> of ZnO nanoparticles exhibited higher the accumulation of anthocyanin contents than other treatments (0, 400 and 800 mg L<sup>-1</sup> of ZnO nanoparticles). It was observed that the appropriation of ZnO nanoparticle concentrations may play a role in enhanced the plant growth, productivity and metabolite of Riceberry plants.