NaCl markedly improved the reproductive capacity of the euhalophyte Suaeda salsa

Guo, Jianrong; Li, Yandi; Han, Guoliang; Song, Jie; Wang, Baoshan

doi:10.1071/fp17181

Cited by 127 publications

(140 citation statements)

References 52 publications

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“…Interestingly, there exists a group of salt-tolerant plants which grow in highly saline soil or water called halophyte Zhao et al, 2011;. An example of a halophyte is Suaeda salsa Cheng et al, 2014;Guo et al, 2015;Guo et al, 2018), which produces dimorphic seeds on the same plant, brown seeds but not black seeds are able to germinate under conditions of high salinity owing to the presence of a seed coat Song et al, 2016;Xu et al, 2016;Song et al, 2017). In this species, ion transport signaling contributes to salt tolerance through the action of various genes including HIGH-AFFINITY POTASSIUM TRANSPORTER (SsHKT)1 (Shao et al, 2014), SODIUM/ HYDROGEN EXCHANGER (SsNHX)1 , and ASCORBATE PEROXIDASE (SsAPX) (Song and Wang, 2015).…”

Section: Salt Stressmentioning

confidence: 99%

Cell Cycle Regulation in the Plant Response to Stress

2020

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As sessile organisms, plants face a variety of environmental challenges. Their reproduction and survival depend on their ability to adapt to these stressors, which include water, heat stress, high salinity, and pathogen infection. Failure to adapt to these stressors results in programmed cell death and decreased viability, as well as reduced productivity in the case of crop plants. The growth and development of plants are maintained by meiosis and mitosis as well as endoreduplication, during which DNA replicates without cytokinesis, leading to polyploidy. As in other eukaryotes, the cell cycle in plants consists of four stages (G1, S, G2, and M) with two major check points, namely, the G1/S check point and G2/M check point, that ensure normal cell division. Progression through these checkpoints involves the activity of cyclin-dependent kinases and their regulatory subunits known as cyclins. In order for plants to survive, cell cycle control must be balanced with adaption to dynamic environmental conditions. In this review, we summarize recent advances in our understanding of cell cycle regulation in plants, with a focus on the molecular interactions of cell cycle machinery in the context of stress tolerance. FIGURE 1 | Schematic representation of the mitotic cell cycle in plants.At the G1 phase, D-type cyclins (CYCD) interact with the A-type CDK (CDKA), forming the CDKA/CYCD complex. The activity of CDKA/CYCD complex can be negatively regulated by KPR and SIM proteins. Once activation, this complex phosphorylates RBR to release the transcript factor E2Fa/b-DP. This E2Fa/b-DP complex binds to the E2F box and activate the transcription of S phase genes. At the G2 and M phase S, CYCA and CYCB are strongly expressed and their gene products assemble with CDKA and CDKB. The CYCD can also associate with CDKs. At the beginning of G2 phase, CDK activity are inhibited because of the phosphorylation of Y14 and T15 site by WEEI kinase. The CDC25-related kinase, which removes the inhibitory phosphate groups, still needs to be identified. Once the CDK/CYC complex are active, they phosphorylate MYB3R transcription factors and activate mitotic genes' transcription. Mitotic exit requires anaphase-promoting complex (APC), which degrades cyclins through ubiquitin-proteasome pathway.

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Section: Salt Stressmentioning

confidence: 99%

Cell Cycle Regulation in the Plant Response to Stress

2020

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“…S. salsa is an euhalophyte with high salt tolerance during germination [23][24][25][26], vegetative growth [27] and reproductive stages [28][29][30][31]. The species is considered to have potential as a vegetable and oilseed crop [32,33], and it is rich in protein, crude fiber, carotenoids and amino acids [34].…”

Section: Introductionmentioning

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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“…In animals, exploring the regulation of Eg5 may provide new knowledge regarding the pathogenesis of cancer and other diseases, leading to improved diagnosis and treatments . In plants, exploring the function, localization, and motor activity of Eg5 may provide important insights into its roles in plant growth and development; furthermore, these studies will provide new knowledge for Eg5 research in animals . It is worth noting that the localization of kinesins during mitosis has been systematically analyzed in Physcomitrella patens .…”

Section: Discussionmentioning

confidence: 99%

Non‐canonical functions of the mitotic kinesin Eg5

2018

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Kinesins are widely expressed, microtubule‐dependent motors that play vital roles in microtubule‐associated cellular activities, such as cell division and intracellular transport. Eg5, also known as kinesin‐5 or kinesin spindle protein, is a member of the kinesin family that contributes to the formation and maintenance of the bipolar mitotic spindle during cell division. Small‐molecule compounds that inhibit Eg5 activity have been shown to impair spindle assembly, block mitotic progression, and possess anti‐cancer activity. Recent studies focusing on the localization and functions of Eg5 in plants have demonstrated that in addition to spindle organization, this motor protein has non‐canonical functions, such as chromosome segregation and cytokinesis, that have not been observed in animals. In this review, we discuss the structure, function, and localization of Eg5 in various organisms, highlighting the specific role of this protein in plants. We also propose directions for the future studies of novel Eg5 functions based on the lessons learned from plants.

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NaCl markedly improved the reproductive capacity of the euhalophyte Suaeda salsa

Cited by 127 publications

References 52 publications

Cell Cycle Regulation in the Plant Response to Stress

Cell Cycle Regulation in the Plant Response to Stress

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

Non‐canonical functions of the mitotic kinesin Eg5

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