Growth promotion by sodium in amaranthaceous plants

Yamada, Mikio; Kuroda, Chika; Fujiyama, Hideyasu

doi:10.1080/01904167.2015.1069341

Cited by 15 publications

(11 citation statements)

References 20 publications

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“…The same characteristics have been observed not only in halophytes but also in some glycophytes. We identified these species as the Naloving plants (Yamada et al 2015). We demonstrated that the optimal sodium chloride (NaCl) concentration for the growth of dwarf glasswort is 200 mol m , and that the relative Na-loving character of these plants is in the order dwarf glasswort (Salicornia bigelovii Torr.)…”

Section: Introductionmentioning

confidence: 99%

“…According to our previous work (Yamada et al 2015), maximum growth of dwarf glasswort, Swiss chard and table beet was respectively observed at 200, 80 and 80 mol m −3 NaCl under K-sufficient conditions. Both the ratio of shoot DW at optimal external Na concentration to that at 0 mol m −3 and the Na concentration of shoots at optimal external Na concentration indicate that the relative Na-loving characters of these plants fall in the order dwarf glasswort ≫ Swiss chard > table beet.…”

Section: Effect Of Increasing the Na/k Ratio In Solution And Of Na Amentioning

confidence: 99%

“…In the current study, the WC of Swiss chard was kept around the optimum value (0.933 g g −1 FW, Yamada et al 2015) in all treatments (Table 3); therefore, 100 mol m −3 Na or K can maintain a favorable water status. This observation leads to the conclusion that Na and K have complementary functions in producing a high internal osmotic pressure in Swiss chard under high salinity.…”

Section: Effect Of Increasing Na/k Ratio In Solution On Water Uptake mentioning

confidence: 99%

“…Many studies have concluded that halophytes require a large amount of Na, which is compartmentalized in the vacuole as an osmolyte (Parks et al 2002;Lv et al 2012a). We proposed that dwarf glasswort and Swiss chard require Na to produce enough osmotic pressure to absorb water (Ohori and Fujiyama 2011;Yamada et al 2015). …”

Section: Effect Of Increasing Na/k Ratio In Solution On Water Uptake mentioning

confidence: 99%

“…To achieve this aim, experiments were conducted under favorable salinity for Naloving plants, 100 mol m −3 NaCl or potassium chloride (KCl) at six Na to K ratios. The increase in biomass production at 100 mol m −3 NaCl relative to that at 0 mol m −3 for dwarf glasswort, Swiss chard and table beet is about 161, 131 and 128%, respectively (Yamada et al 2015). -N), and the ratio of Na to K was varied as indicated in Table 1.…”

Section: Introductionmentioning

confidence: 99%

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Function of sodium and potassium in growth of sodium-loving Amaranthaceae species

Yamada

Kuroda

Fujiyama

2015

Soil Science and Plant Nutrition

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We observed that the growth of three Amaranthaceae species was promoted by sodium (Na), in the order dwarf glasswort (Salicornia bigelovii Torr.) >> Swiss chard (Beta Burgaris L. spp. cicla cv. Seiyou Shirokuki) > table beet (Beta vulgaris L. spp. vulgaris cv. Detroit Dark Red). In the present study, these Na-loving plants were grown in solutions containing 4 mol m −3 nitrate nitrogen (NO 3 -N) and 100 mol m −3 sodium chloride (NaCl) and potassium chloride (KCl) under six Na to potassium (K) ratios, 0:100, 20:80, 40:60, 60:40, 80:20 and 100:0, to elucidate the function of Na and K on specific characteristics of Na-loving plants. The growth of dwarf glasswort increased with increasing Na concentration of the shoot, and the shoot dry weight of plants grown in 100:0 Na:K was 214% that of plants grown at 0:100. In Swiss chard and table beet, growth was unchanged by the external ratio of Na to K. The water content was not changed in Swiss chard or table beet by the external Na to K ratio. These observations indicate that both Na and K have a function in osmotic regulation. However, dwarf glasswort could not maintain succulence at 0:100; therefore, Na has a specific function in dwarf glasswort for osmotic regulation to maintain a favorable water status, and the contribution of K to osmotic regulation is low. NO 3 -N uptake was promoted by Na uptake in dwarf glasswort and Swiss chard. NO 3 -N uptake and transport to shoots was optimal at 100:0 in dwarf glasswort and at 80:20 in Swiss chard. These functions are very important for the Na-loving mechanism, and the contribution of K was lower in dwarf glasswort than in Swiss chard. ARTICLE HISTORY

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Section: Introductionmentioning

confidence: 99%

Section: Effect Of Increasing the Na/k Ratio In Solution And Of Na Amentioning

confidence: 99%

Section: Effect Of Increasing Na/k Ratio In Solution On Water Uptake mentioning

confidence: 99%