Transcriptomic and Physiological Evidence for the Relationship between Unsaturated Fatty Acid and Salt Stress in Peanut

Sui, Na; Wang, Yu; Liu, Shanshan; Yang, Zhen; Wang, Fang; Wan, Shubo

doi:10.3389/fpls.2018.00007

Cited by 129 publications

(95 citation statements)

References 72 publications

(84 reference statements)

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“…Over~6% of the world's lands are saline and~20% of irrigated lands are currently salt-affected (Song and Wang, 2015;Yuan et al, 2016a). Salt stress is an important factor determining plant growth and yields (Mahajan and Tuteja, 2005;Deng et al, 2015), by substantially affecting key biological processes, such as photosynthesis (Feng et al, 2014), energy metabolism (Song et al, 2016), protein synthesis, and lipid metabolism (Sui et al, 2010;Sui and Han, 2014;Sui et al, 2018). A limited number of crops can survive in saline land, which can lead to desertification (Flowers and Colmer, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…In China, about 100,000 hectares of lands were used to plant sweet sorghum. Sweet sorghum has the characteristics of high photosynthetic efficiency (Guo et al, 2018a), high fermentable sugar content in stalks, and high salt tolerance (Vasilakoglou et al, 2011;Sui et al, 2015). As a C4 crop, it has the ability to produce high biomass under stress conditions.…”

Section: Introductionmentioning

confidence: 99%

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Photosynthetic Regulation Under Salt Stress and Salt-Tolerance Mechanism of Sweet Sorghum

et al. 2020

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Sweet sorghum is a C4 crop with the characteristic of fast-growth and high-yields. It is a good source for food, feed, fiber, and fuel. On saline land, sweet sorghum can not only survive, but increase its sugar content. Therefore, it is regarded as a potential source for identifying salt-related genes. Here, we review the physiological and biochemical responses of sweet sorghum to salt stress, such as photosynthesis, sucrose synthesis, hormonal regulation, and ion homeostasis, as well as their potential salt-resistance mechanisms. The major advantages of salt-tolerant sweet sorghum include: 1) improving the Na + exclusion ability to maintain ion homeostasis in roots under saltstress conditions, which ensures a relatively low Na + concentration in shoots; 2) maintaining a high sugar content in shoots under salt-stress conditions, by protecting the structures of photosystems, enhancing photosynthetic performance and sucrose synthetase activity, as well as inhibiting sucrose degradation. To study the regulatory mechanism of such genes will provide opportunities for increasing the salt tolerance of sweet sorghum by breeding and genetic engineering.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photosynthetic Regulation Under Salt Stress and Salt-Tolerance Mechanism of Sweet Sorghum

et al. 2020

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“…As an effective strategy, transcriptome sequencing can be used to detect candidate participants of stress response on a genome-wide scale. A great deal of attention has been paid to salt stress responses in halophytes using sequencing technologies 2,[46][47][48][49][50][51][52][53][54][55][56] . Full-genome transcriptome analysis through deep sequencing seems to be the most promising strategy to identify candidate genetic determinants of salt tolerance in S. salsa.…”

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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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“…To our knowledge, there have been an increasing number of studies on transcriptome analysis of legume species using high-throughput RNA sequencing approach, among those regarding the effects of salinity stress were reported on Medicago [40][41][42], glycine [43][44][45], and common bean [46][47][48]. Studies focusing on transcriptome research of the peanut under salt stress are rare, but there exists a substantial amount of reports regarding the physiological responses to salt stress in peanut based on a de novo transcriptomic sequence assembly method [49][50][51]. In this study, a high-throughput RNA sequencing of cultivated peanut variety under long-term salinity stress conditions was performed and deeply analyzed, which will contribute to a well annotation of cultivated peanut reference genome by the IPGI group.…”

Section: Discussionmentioning

confidence: 99%

Comparative Transcriptome Analysis Reveals Molecular Defensive Mechanism of Arachis hypogaea in Response to Salt Stress

Zhang

Zhao²,

Sun³

et al. 2020

International Journal of Genomics

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Abiotic stresses comprise all nonliving factors, such as soil salinity, drought, extreme temperatures, and metal toxicity, posing a serious threat to agriculture and affecting the plant production around the world. Peanut (Arachis hypogaea L.) is one of the most important crops for vegetable oil, proteins, minerals, and vitamins in the world. Therefore, it is of importance to understand the molecular mechanism of peanut against salt stress. Six transcriptome sequencing libraries including 24-hour salt treatments and control samples were constructed from the young leaves of peanut. A comprehensive analysis between two groups detected 3,425 differentially expressed genes (DEGs) including 2,013 upregulated genes and 1,412 downregulated genes. Of these DEGs, 141 transcription factors (TFs) mainly consisting of MYB, AP2/ERF, WRKY, bHLH, and HSF were identified in response to salinity stress. Further, GO categories of the DEGs highly related to regulation of cell growth, cell periphery, sustained external encapsulating structure, cell wall organization or biogenesis, antioxidant activity, and peroxidase activity were significantly enriched for upregulated DEGs. The function of downregulated DEGs was mainly enriched in regulation of metabolic processes, oxidoreductase activity, and catalytic activity. Fourteen DEGs with response to salt tolerance were validated by real-time PCR. Taken together, the identification of DEGs' response to salt tolerance of cultivated peanut will provide a solid foundation for improving salt-tolerant peanut genetic manipulation in the future.

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Transcriptomic and Physiological Evidence for the Relationship between Unsaturated Fatty Acid and Salt Stress in Peanut

Cited by 129 publications

References 72 publications

Photosynthetic Regulation Under Salt Stress and Salt-Tolerance Mechanism of Sweet Sorghum

Photosynthetic Regulation Under Salt Stress and Salt-Tolerance Mechanism of Sweet Sorghum

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

Comparative Transcriptome Analysis Reveals Molecular Defensive Mechanism of Arachis hypogaea in Response to Salt Stress

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