Tolerance of submerged germinating rice to 50-200mM NaCl in aerated solution

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    Abstract

    This paper concerns tolerance to 50-200mM NaCl of submerged rice (Oryza sativa cv. Amaroo) during germination and the first 138-186h of development in aerated solution. Rice was able to germinate and the seedlings even tolerated exposure to 200mM NaCl, albeit with severe growth restrictions. After return to 0.3mM NaCl, growth increased, indicating that even at 200mM NaCl there was no irreparable injury. Osmotic adjustment was achieved by using Na+ and Cl- as the major osmotica. At 200mM NaCl commenced at sowing, the shoot Na+ and Cl- concentrations between 50-110h were about 210 and 260mM, respectively, i.e. above the external concentration. Thus, there was a high tissue tolerance to NaCl. The internal concentrations declined subsequently, concurrent with a decline in growth. At 50-200mM NaCl, the contributions from ions to πsap were 81-92% in roots and 62-74% in shoots. The assessed turgor pressures at 200mM NaCl were 0.33MPa in shoots and 0.15MPa in roots, compared to 0.62 and 0.43MPa at 0.3mM NaCl. In the General Discussion section, we compare the different responses of submerged seedlings to the responses of transpiring rice plants, reported in the literature, and suggest that the submerged system is useful to evaluate effects of NaCl on turgor pressure and particularly to establish whether there are specific effects of Na+ and Cl- in tissues. © 2013 Scandinavian Plant Physiology Society.
    Original languageEnglish
    Pages (from-to)222-233
    JournalPhysiologia Plantarum
    Volume149
    Issue number2
    DOIs
    Publication statusPublished - 2013

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    turgor
    rice
    shoots
    Seedlings
    seedlings
    Growth
    plant physiology
    Plant Physiological Phenomena
    Pressure
    sap
    Oryza sativa
    sowing
    Germination
    ions
    germination
    Ions
    Oryza
    Wounds and Injuries
    tissues

    Cite this

    @article{df1469993c31430f96447e35fb5880e2,
    title = "Tolerance of submerged germinating rice to 50-200mM NaCl in aerated solution",
    abstract = "This paper concerns tolerance to 50-200mM NaCl of submerged rice (Oryza sativa cv. Amaroo) during germination and the first 138-186h of development in aerated solution. Rice was able to germinate and the seedlings even tolerated exposure to 200mM NaCl, albeit with severe growth restrictions. After return to 0.3mM NaCl, growth increased, indicating that even at 200mM NaCl there was no irreparable injury. Osmotic adjustment was achieved by using Na+ and Cl- as the major osmotica. At 200mM NaCl commenced at sowing, the shoot Na+ and Cl- concentrations between 50-110h were about 210 and 260mM, respectively, i.e. above the external concentration. Thus, there was a high tissue tolerance to NaCl. The internal concentrations declined subsequently, concurrent with a decline in growth. At 50-200mM NaCl, the contributions from ions to πsap were 81-92{\%} in roots and 62-74{\%} in shoots. The assessed turgor pressures at 200mM NaCl were 0.33MPa in shoots and 0.15MPa in roots, compared to 0.62 and 0.43MPa at 0.3mM NaCl. In the General Discussion section, we compare the different responses of submerged seedlings to the responses of transpiring rice plants, reported in the literature, and suggest that the submerged system is useful to evaluate effects of NaCl on turgor pressure and particularly to establish whether there are specific effects of Na+ and Cl- in tissues. {\circledC} 2013 Scandinavian Plant Physiology Society.",
    author = "B. Kurniasih and Hendrik Greenway and Tim Colmer",
    year = "2013",
    doi = "10.1111/ppl.12029",
    language = "English",
    volume = "149",
    pages = "222--233",
    journal = "Physiologia Plantarum",
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    }

    Tolerance of submerged germinating rice to 50-200mM NaCl in aerated solution. / Kurniasih, B.; Greenway, Hendrik; Colmer, Tim.

    In: Physiologia Plantarum, Vol. 149, No. 2, 2013, p. 222-233.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Tolerance of submerged germinating rice to 50-200mM NaCl in aerated solution

    AU - Kurniasih, B.

    AU - Greenway, Hendrik

    AU - Colmer, Tim

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    N2 - This paper concerns tolerance to 50-200mM NaCl of submerged rice (Oryza sativa cv. Amaroo) during germination and the first 138-186h of development in aerated solution. Rice was able to germinate and the seedlings even tolerated exposure to 200mM NaCl, albeit with severe growth restrictions. After return to 0.3mM NaCl, growth increased, indicating that even at 200mM NaCl there was no irreparable injury. Osmotic adjustment was achieved by using Na+ and Cl- as the major osmotica. At 200mM NaCl commenced at sowing, the shoot Na+ and Cl- concentrations between 50-110h were about 210 and 260mM, respectively, i.e. above the external concentration. Thus, there was a high tissue tolerance to NaCl. The internal concentrations declined subsequently, concurrent with a decline in growth. At 50-200mM NaCl, the contributions from ions to πsap were 81-92% in roots and 62-74% in shoots. The assessed turgor pressures at 200mM NaCl were 0.33MPa in shoots and 0.15MPa in roots, compared to 0.62 and 0.43MPa at 0.3mM NaCl. In the General Discussion section, we compare the different responses of submerged seedlings to the responses of transpiring rice plants, reported in the literature, and suggest that the submerged system is useful to evaluate effects of NaCl on turgor pressure and particularly to establish whether there are specific effects of Na+ and Cl- in tissues. © 2013 Scandinavian Plant Physiology Society.

    AB - This paper concerns tolerance to 50-200mM NaCl of submerged rice (Oryza sativa cv. Amaroo) during germination and the first 138-186h of development in aerated solution. Rice was able to germinate and the seedlings even tolerated exposure to 200mM NaCl, albeit with severe growth restrictions. After return to 0.3mM NaCl, growth increased, indicating that even at 200mM NaCl there was no irreparable injury. Osmotic adjustment was achieved by using Na+ and Cl- as the major osmotica. At 200mM NaCl commenced at sowing, the shoot Na+ and Cl- concentrations between 50-110h were about 210 and 260mM, respectively, i.e. above the external concentration. Thus, there was a high tissue tolerance to NaCl. The internal concentrations declined subsequently, concurrent with a decline in growth. At 50-200mM NaCl, the contributions from ions to πsap were 81-92% in roots and 62-74% in shoots. The assessed turgor pressures at 200mM NaCl were 0.33MPa in shoots and 0.15MPa in roots, compared to 0.62 and 0.43MPa at 0.3mM NaCl. In the General Discussion section, we compare the different responses of submerged seedlings to the responses of transpiring rice plants, reported in the literature, and suggest that the submerged system is useful to evaluate effects of NaCl on turgor pressure and particularly to establish whether there are specific effects of Na+ and Cl- in tissues. © 2013 Scandinavian Plant Physiology Society.

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