Seed germination of the halophyteSuaeda japonica under salt stress

Yokoishi, Takaharu; Tanimoto, Shizufumi

doi:10.1007/bf02344061

Cited by 43 publications

(18 citation statements)

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“…The change may enable halophytes to respond to varying salt-marsh or desert environments and could provide multiple opportunities for seedling establishment and survival in the salt environment (Philipupillai and Ungar 1984). Similar polymorphism has also been shown in other Suaeda species, such as S. depressa (Ungar and Capilupo 1969;Williams and Ungar 1972), S. fruticosa (Jhamb and Sen 1984;, S. maritima (Boucaud andUngar 1973, 1976), S. japonica (Yokoishi and Tanimoto 1994) and S. moquinii .…”

Section: Introductionmentioning

confidence: 76%

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The effect of plant growth regulators, nitric oxide, nitrate, nitrite and light on the germination of dimorphic seeds of Suaeda salsa under saline conditions

et al. 2005

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Suaeda salsa, a leaf succulent shrub in the family Chenopodiaceae, is one of the most important halophytes in China. Suaeda salsa produces dimorphic seeds (soft brown seeds and hard black seeds). Seeds of S. salsa were collected from the coastal salt flats near Huanghua City, China. Experiments were conducted to determine the salinity-alleviating effect of plant growth regulators, nitric oxide, nitrate, nitrite and light on the germination of dimorphic seeds of S. salsa. Brown seeds had a higher germination rate than black seeds in all experiments. Black seeds were more sensitive to salt in the absence of light in comparison to brown seeds. Brown seeds absorbed water more quickly in comparison to black seeds and were found to be more tolerant of salt stress. Our results showed that 1-aminocyclopropane-1-carboxylate (ACC, the immediate precursor of ethylene), nitrite, GA(4) and BA improved seed germination in the presence of salt. However, nitrate, GA(1), GA(3) failed to alleviate salt stress. ABA inhibited seed germination and seedling growth. Possible mechanisms involved in the alleviation of salt stress in S. salsa seeds and the ecological adaptation of the seeds to the environment are discussed.

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Section: Introductionmentioning

confidence: 76%

“…The limit of salt tolerance for Suaeda species varies from 400-1,000 mM NaCl (Ungar 1962;Ungar and Capilupo 1969;Clarke and Hannon 1970;Okusanya 1979;Yokoishi and Tanimoto 1994;Khan et al 2001).…”

Section: Introductionmentioning

confidence: 99%

The effect of plant growth regulators, nitric oxide, nitrate, nitrite and light on the germination of dimorphic seeds of Suaeda salsa under saline conditions

et al. 2005

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“…With a lower flow rate, more seeds might have established in flat geomorphology in Korea and Japan (Figs. 3, 4, 5, and 6;Wells et al 1990;Alexander et al 1991;Yokoishi and Tanimoto 1994;Min 2005;Sin and Kim 2010). Early germination rate was higher in the upper intertidal zone due to a higher seed sediment rate.…”

Section: Habitat Characteristics and Soil Factorsmentioning

confidence: 99%

Relationship between halophyte distribution and soil environmental factors in the west coast of South Korea

Lee

Kim

2018

j ecology environ

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Background: The objective of this study was to determine the relationship between soil environmental factors and halophyte distribution in the west coast of South Korea. Soils of our study sites were categorized into two groups: salt marsh and estuary marsh. Results: Salinity was higher in the salt marsh group than that in the estuary marsh group. However, total nitrogen, silt, and clay contents were higher in the estuary marsh group than those in the salt marsh group. Although altitude had a wider range in the salt marsh group, the mean altitude was higher in the estuary marsh group than that in the salt marsh group. Annual halophytes of seed propagation species were distributed parallel to the coast line on salt marsh. Higher coverage of vegetation was found in the area closer to the coast line. Plant density was higher near dead parental plants in estuary marsh, showing less difference in area that was more distant from the coast line. Conclusions: Results of canonical correspondence analysis (CCA) for vegetation distribution and sediment environmental factors and germination analysis in the coast line showed significant relationship with halophyte distribution. Therefore, they can be used as an indicator of coastal plant movement due to sea level rise.

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“…Thus, S. japonica is expected to have unique adaptive strategies to survive in harsh conditions, but only a few studies on the mechanisms of stress tolerance in this species have been reported. Yokoishi and Tanimoto (1994) and Tanimoto et al (1997) showed that the synthesis of glycinebetaine was up-regulated under salt stress conditions in the seedlings and callus tissues of S. japonica.…”

mentioning

confidence: 99%