Distribution pattern and salt excretion rate of salt glands in two recretohalophyte species of Limonium (Plumbaginaceae)

Leng, Bingying; Yuan, Fang; Dong, Xiao-Qiao; Wang, J.; Wang, B.S.

doi:10.1016/j.sajb.2018.01.002

Cited by 60 publications

(40 citation statements)

References 33 publications

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“…Another salt-tolerant plant is Limonium bicolor, a recretohalophyte with salt glands and a bladder that enable the secretion of excess salt into the environment Yuan et al, 2014;Yuan et al, 2015a;Yuan et al, 2015b;Yuan et al, 2016a;Yuan et al, 2016b). Recent studies show that the rate of secretion is determined by K + and Ca 2+ concentration (Ding et al, 2010;Feng et al, 2014;Feng et al, 2015;Leng et al, 2018). In Thellungiella salsuginea, microRNAs and unsaturated fatty acids enhance resistance to high salinity Sui and Han, 2014).…”

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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“…[88][89][90] In the long-term evolution, the halophyte itself forms a special structure such as salt glands and salt sacs to help plants resist salt stress. [91][92][93][94][95][96][97][98][99][100] In addition, certain hormones, genes, ions, and foreign substances, etc., participate in the plant salt stress response process through various pathways. [101][102][103][104][105][106][107][108][109][110][111][112][113][114][115][116] In recent years, it has been found that salt stress can also induce the expression of ME gene and the accumulation of ME protein in various plants.…”

Section: Research Progress Of Me In Plant Salt Responsementioning

confidence: 99%

Roles of malic enzymes in plant development and stress responses

Han

Meng

Lin

et al. 2019

Plant Signaling & Behavior

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Malic enzyme (ME) comprises a family of proteins with multiple isoforms located in different compartments of eukaryotic cells. It is a key enzyme regulating malic acid metabolism and can catalyze the reversible reaction of oxidative decarboxylation of malic acid. And it is also one of the important enzymes in plant metabolism and is involved in multiple metabolic processes. ME is widely present in plants and mainly discovered in cytoplasmic stroma, mitochondria, chloroplasts. It is involved in plant growth, development, and stress response. Plants are stressed by various environmental factors such as drought, high salt, and high temperature during plant growth, and the mechanisms of plant response to various environmental stresses are synergistic. Numerous studies have shown that ME participates in the process of coping with the above environmental factors by increasing water use efficiency, improving photosynthesis of plants, providing reducing power, and so on. In this review, we discuss the important role of ME in plant development and plant stress response, and prospects for its application. It provides a theoretical basis for the future use of ME gene for molecular resistance breeding.

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“…Plants have evolved various adaptive mechanisms in response to salt stress, leading to survival in saline land. These mechanisms occur at multiple levels, the molecular level (Yuan et al, 2016b) and the physiological and biochemical levels (Guo et al, 2012;Kong et al, 2016;Leng et al, 2018). At the molecular level, many genes related to salt-stress responses are differentially expressed after plants sense the external salt-stress signals (Zhu, 2001).…”

Section: Introductionmentioning

confidence: 99%

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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Distribution pattern and salt excretion rate of salt glands in two recretohalophyte species of Limonium (Plumbaginaceae)

Cited by 60 publications

References 33 publications

Cell Cycle Regulation in the Plant Response to Stress

Cell Cycle Regulation in the Plant Response to Stress

Roles of malic enzymes in plant development and stress responses

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

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