Analysis of storage compounds and inorganic ions in dimorphic seeds of euhalophyte Suaeda salsa

Zhao, Yuanqin; Yang, Yang; Song, Yan-Yan; Li, Qiang; Song, Jie

doi:10.1016/j.plaphy.2018.08.003

Cited by 29 publications

(24 citation statements)

References 47 publications

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“…In the present study, 500 mM NaCl induced the significant differential expression of lipid metabolites, and more unsaturated fatty acids were increased, when compared to those in controls and at 200 mM NaCl (Table 1). Monoacylglyceride (MAG), lysophosphatidylcholine (LysoPC), octadecatrienoic acid's derivates, α-linolenic acid (ALA) and punicic acid are unsaturated fatty acids that are good for human health, especially ALA [52]. The main role of ALA may be as a precursor to long-chain n-3 PUFAs, such as EPA and DHA [53].…”

Section: Discussionmentioning

confidence: 99%

Analysis of widely targeted metabolites of the euhalophyte Suaeda salsa under saline conditions provides new insights into salt tolerance and nutritional value in halophytic species

Liu

Song

2019

BMC Plant Biol

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Background: Suaeda salsa L. (S. salsa) is an annual euhalophyte with high salt tolerance and high value as an oil crop, traditional Chinese medicine and vegetable. However, there are few comprehensive studies on the metabolomics of S. salsa under saline conditions. Results: Seedlings of S. salsa were cultured with 0, 200 and 500 mM NaCl for two days. Then, widely targeted metabolites were detected with ultra performance liquid chromatography and tandem mass spectrometry. A total of 639 metabolites were annotated. Among these, 253 metabolites were differential metabolites. Salt treatment increased the content of certain metabolites, such as nucleotide and its derivates, organic acids, the content of amino acids, lipids such as αlinolenic acid, and certain antioxidants such as quercetin. These substances may be correlated to osmotic tolerance, increased antioxidant activity, and medical and nutritional value in the species. Conclusion: This study comprehensively analyzed the metabolic response of S. salsa under salinity from the perspective of omics, and provides an important theoretical basis for understanding salt tolerance and evaluating nutritional value in the species.

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Section: Discussionmentioning

confidence: 99%

Analysis of widely targeted metabolites of the euhalophyte Suaeda salsa under saline conditions provides new insights into salt tolerance and nutritional value in halophytic species

Liu

Song

2019

BMC Plant Biol

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“…Besides, accumulation of compatible solutes has been regarded as one of basic strategies for the protection and survival of euhalophytes under salt stress, including soluble carbohydrates, glycocoll betaine, polyols and proteins. These compatible solutes protect plants against stress by adjusting cellular osmotic pressure, detoxifiation of reactive oxygen species (ROS), maintaining membrane integrity, and stabilizing enzyme and protein complex [30][31][32][33][34][35] .…”

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confidence: 99%

Transcriptomic analysis identifies novel genes and pathways for salt stress responses in Suaeda salsa leaves

Zhang

Yao

et al. 2020

Sci Rep

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Salinity is a critical abiotic stress, which significantly impacts the agricultural yield worldwide. Identification of the molecular mechanisms underlying the salt tolerance in euhalophyte Suaeda salsa is conducive to the development of salt-resistant crops. In the present study, high-throughput RNA sequencing was performed after S. salsa leaves were exposed to 300 mM NaCl for 7 days, and 7,753 unigenes were identified as differently expressed genes (DEGs) in S. salsa, including 3,638 increased and 4,115 decreased unigenes. Moreover, hundreds of pathways were predicted to participate in salt stress response in S. salsa by Gene Ontology (GO), MapMan and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses, including ion transport and sequestration as well as photoprotection of photosystem (PS) II. The GO enrichment analysis indicated that genes related to ion transport, reactive oxygen species (ROS) scavenging and transcriptional factors were highly expressed upon NaCl treatment. The excessive Na + and cl − ions were supposed to be absorbed into the vacuole for ion sequestration and balance adjustment by potassium transporters (such as KEA3) with high expressions. Moreover, we predicted that mutiple candidate genes associated with photosynthesis (such as PSB33 and ABA4), ROS (such as TAU9 and PHI8) and transcriptional regulation (HB-7 and MYB78) pathways could mitigate salt stress-caused damage in S. salsa. Salt stress, one of the most important abiotic factors, greatly affects global agricultural productivity. It is estimated that about 6.0% of the land worldwide, more than 800 million ha, is either salt affected or has been subjected to soil salinization 1,2. The food production is increased at a rate of 1.8% per year, the world population is expected to exceed 9.5 billion people by 2050 (http://www.fao.org/wsfs/world-summit/en), and 30% of the cultivable soils will become unusable due to salt stress, all of which pose serious challenges to salt alleviating technologies for agricultural research 3. Plants can be divided into halophytes and glycophytes according to the ability of salt tolerance. External salt concentration of 86 mM NaCl has been taken as a general limit, above which the plant yield of glycophytes is severely reduced 4,5. Nevertheless, halophytes can grow in a surrounding containing even 200 mM NaCl or more, and they are further categorized into euhalophytes, recretohalophytes and pseudo-halophytes 6-9. Salt-diluting halophytes, such as sea beet and other succulent halophytes, are able to balance low external water potential and generate turgor by accumulating high contents of internal Na + and Cl − ions in their vegetative tissues 10-12. Recretohalophytes are typical halophytes, which have developed a series of adaptive secretory structures, including salt glands and salt bladders, for salt excretion 2,4,5,13-15. These characteristic visible structures of recretohalophytes play a crucial role in excreting excess salt out of the plants to avoid ionic damage 13,14,16-20. Euhalophytes ...

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“…Halophytes produce or accumulate more organic osmolytes (proline, betaine, soluble sugar, and polyols) and protein in their large seeds as compared with small seeds to ensure optimum germination under salt stress [31]. These osmolytes can help in osmotic adjustment, can serve as membrane protectors, may aid in ROS detoxification or may act as signaling compounds that trigger other stress-alleviation mechanisms [32].…”

Section: Inorganic Ions and Organic Osmolytesmentioning

confidence: 99%

Adaptation of Halophytes to Different Habitats

Bueno¹

2020

Seed Dormancy and Germination

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In recent years, global climate change has been altering environmental (severe drought, soil salinization, irregular precipitation, etc.), around world, decreasing crop yield and upsetting the balance of ecosystems. Nonetheless, a group of plants known as halophytes have the ability to survive and develop in saline soils (wetlands, deserts or temperate zones), may be used in agriculture as a possible alternative to crops (salt-sensitive), as well as for fodder, energy production, medicinal purposes, and desalination of salt-affected areas (phytoremediation). This chapter provides a comprehensive summary of the adaptive strategies used by the annual and perennial halophytes on ecophysiological perspectives, to survive in diverse habitats. The results show a great diverse strategies, such as heteromorphism, seed banks, dormancy, rapid germination, and recovery capacity, from saline shock, favoring the chances of seed survival, although these mechanisms depend on light, moisture, temperature, and the type of salt, in which seeds germinate. In addition, it has been included some molecular, and biochemical aspects, discovered in last years, that might improve our understanding of physiology of these plants. It can conclude that halophytes may be as a possible alternative to ease pressure on cropping systems, restored lands degraded, or confer stress tolerance trough gene transfer.

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Analysis of storage compounds and inorganic ions in dimorphic seeds of euhalophyte Suaeda salsa

Cited by 29 publications

References 47 publications

Analysis of widely targeted metabolites of the euhalophyte Suaeda salsa under saline conditions provides new insights into salt tolerance and nutritional value in halophytic species

Analysis of widely targeted metabolites of the euhalophyte Suaeda salsa under saline conditions provides new insights into salt tolerance and nutritional value in halophytic species

Transcriptomic analysis identifies novel genes and pathways for salt stress responses in Suaeda salsa leaves

Adaptation of Halophytes to Different Habitats

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