Inorganic and organic osmolytes accumulation in five halophytes growing in saline habitats around the Aiding Lake area in Turpan Basin, Northwest China

Maimaiti, Ailijiang; Iwanaga, Fumiko; Taniguchi, Takeshi; Hara, Nana; Matsuo, Naoko; Mori, Nobuhiro; Yunus, Qiman; Yamanaka, Norikazu

doi:10.1080/15324982.2016.1148799

Cited by 12 publications

(8 citation statements)

References 28 publications

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“…Among organic osmolytes the contribution of soluble sugars was 10%, whereas the proline and glycine betaine contribution was <1% in osmotic adjustment (data not shown). Similar results were also reported in P. australis (Gorai et al 2011;Maimaiti et al 2016). However, there is a possibility that polyols (especially mannitol) may contribute to osmotic adjustment in P. karka as also reported in Phragmites australis (Maimaiti et al 2016) and Phragmites communis (Briens and Larher 1982).…”

Section: Table 1 Changes In Calcium Content Sclerophylly Indices Ansupporting

confidence: 87%

“…Similar results were also reported in P. australis (Gorai et al 2011;Maimaiti et al 2016). However, there is a possibility that polyols (especially mannitol) may contribute to osmotic adjustment in P. karka as also reported in Phragmites australis (Maimaiti et al 2016) and Phragmites communis (Briens and Larher 1982). Although small changes in leaf Y p were found at 300 mM NaCl, there was a significant loss in turgor potential (Y p ), which suggests that increasing cell wall rigidity may result in poor plant growth (Martìnez et al 2004;Verslues et al 2006).…”

Section: Table 1 Changes In Calcium Content Sclerophylly Indices Ansupporting

confidence: 83%

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Growth patterns of Phragmites karka under saline conditions depend on the bulk elastic modulus

et al. 2018

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Salt stress is known to hamper steady-state water flow, which may reduce plant growth. This research was aimed to study the roles of leaf turgor, osmotic adjustment and cell wall elasticity under saline conditions which may reduce biomass production in Phragmites karka (Retz.) Trin, ex. Steud. (a marsh grass). Plants were grown in 0, 100 and 300 mM NaCl and harvested on 3, 7, 15 and 30 days to observe periodic changes in growth and water relations. Leaf number, relative growth rate, and relative elongation rates were higher in the non-saline control than in the plants grown under saline conditions. Plants showed a rapid decline in leaf growth rate (7–15 days) in 300 mM NaCl compared with a delayed response (15–30 days) in 100 mM NaCl. Leaf water potential decreased with increases in salinity after the third day of exposure whereas osmotic potential decreased after the fifteenth day. Low leaf turgor (Ψp) on the third day indicated an initial phase of osmotic stress under saline conditions. Plants maintained higher Ψp in 0 and 100 mM than in 300 mM NaCl. Differences between mid-day and pre-dawn water potential and water saturation deficit were higher in 300 mM NaCl than with other treatments. Water potential and hydraulic capacitance at turgor loss point decreased whereas bulk elastic modulus increased in 300 mM NaCl. Maintenance of turgor and growth at 100 mM NaCl could be related to efficient osmotic adjustment (use of K+ and Cl–), higher WUEi, and lower bulk elasticity whereas poor growth at 300 mM NaCl may have been a consequence of low turgor, decreased cell hydraulic capacitance and higher bulk elastic modulus.

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Section: Table 1 Changes In Calcium Content Sclerophylly Indices Ansupporting

confidence: 87%

Section: Table 1 Changes In Calcium Content Sclerophylly Indices Ansupporting

confidence: 83%

Growth patterns of Phragmites karka under saline conditions depend on the bulk elastic modulus

et al. 2018

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“…Although osmolytes are generally described as compounds that lower the osmotic potential and maintain normal turgor pressure at the cellular level (as above), many literature data highlight osmoprotectants as universal molecules whose chemical structure facilitates their antioxidant activity (e.g., Gil-Oritz et al 2013;Slama et al 2015;Sengupta et al 2016;Valenzuela-Soto and Figueroa-Soto 2019). Combining these two abilities, as well as cross-linking osmotic biosynthetic pathways with biosynthetic pathways of different biocompounds and/or their ability to cooperate with other bioactive compounds involved in different metabolic pathways (Maimaiti et al 2016;Bueno and Cordovilla 2019;Valenzuela-Soto and Figueroa-Soto 2019), osmoprotectants, even at high concentration of salts and/or other environmental stress factors, are capable of maintaining cellular osmotic and ROS balance, preventing membrane injury, stabilizing proteins complexes, and controlling signalling transduction or gene expression of stress-related proteins/biocompounds (Table 1).…”

Section: Aaamentioning

confidence: 99%

“…Soluble carbohydrates and polyols serve as energy sources, storage molecules, and components for the synthesis of other organic metabolites. Carbohydrates are also important osmoprotectants and components of ROS scavenging system (Gil-Ortiz et al 2013;Keunen et al 2013;Slama et al 2015;Maimaiti et al 2016;Medini et al 2019). They probably act synergistically with phenylpropanoids.…”

Section: Carbohydrates and Polyolsmentioning

confidence: 99%

“…Moreover, participation of sugar signaling in metabolic responses by redox regulation and starch metabolism was suggested (Geigenberger and Fernie 2014;Medini et al 2019). Also, polyols act as osmoprotectants, antioxidants, structural components, and compounds supporting membrane protection (Slama et al 2015;Maimaiti et al 2016).…”

Section: Carbohydrates and Polyolsmentioning

confidence: 99%

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Osmoprotectants and Nonenzymatic Antioxidants in Halophytes

Surówka

Hura

2020

Handbook of Halophytes

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Salt tolerance is a complex phenomenon leading to ionic imbalance, osmotic stress, and excessive generation of reactive oxygen species (ROS). Halophytes developed a range of adaptations to tolerate disturbances in their redox homeostasis caused by high salinity alone or by its combination with other stresses. Osmoprotectants are universal molecules whose chemical structure allows them for making efficient osmotic adjustments and exerting antioxidant activity. Combining these two abilities, they become effective molecules that prevent membrane injury and stabilize proteins/enzymes under high concentrations of salts or other harmful solutes. Components of antioxidant systems together with some osmoprotectants act as ROS regulating networks. Selected compatible solutes (carbohydrates, polyols, amino acids, betaines, polyamines, phenols) (i) allow for balancing ROS level and redox status, (ii) are involved in ROSdependent signaling pathways, and (iii) activate the osmotic response network under salt stress. Osmolytes are also sources of carbon, nitrogen, sulfur, and energy for cells. Through the interaction with other biocompounds and/or their involvement in different metabolic pathways/metabolic loops, they can modulate metabolic homeostasis, especially under environmental stresses, and thus affect plant salt tolerance.

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Salinity-Induced Changes in Growth Attributes, Water Relation and Ion Flux of Subtropical Halophytes

Ahmed¹,

Abideen²,

Aziz³

et al. 2020

Handbook of Halophytes

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Although halophytes could grow in a variety of habitats with extreme temperatures and highly variable saline conditions, this chapter explains growth dynamics of subtropical halophytes growing near inland and coastal areas of Karachi. Growth and ecophysiological parameters are discussed in this review which will provide an insight for domestication of the halophytes using saline resources considering their presence in heterogeneous habitats (such as dunes, marshes, salt flats, etc.). Studies suggest that most of the grasses grow best under nonsaline control and reduce their growth under saline conditions, while most of the dicots

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Inorganic and organic osmolytes accumulation in five halophytes growing in saline habitats around the Aiding Lake area in Turpan Basin, Northwest China

Cited by 12 publications

References 28 publications

Growth patterns of Phragmites karka under saline conditions depend on the bulk elastic modulus

Growth patterns of Phragmites karka under saline conditions depend on the bulk elastic modulus

Osmoprotectants and Nonenzymatic Antioxidants in Halophytes

Salinity-Induced Changes in Growth Attributes, Water Relation and Ion Flux of Subtropical Halophytes

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