Adaptation Mechanism of Salt Excluders under Saline Conditions and Its Applications

Chen, Min; Yang, Zhen; Jing, Liu; Zhu, Tingting; Wei, Xiaocen; Hai, Fan; Wang, Baoshan

doi:10.3390/ijms19113668

Cited by 107 publications

(76 citation statements)

References 84 publications

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“…Salt stress is a serious problem that limits crop production worldwide (Munns and Tester, 2008;Chen et al, 2018). Many C2H2-type TFs act as transcriptional activators or repressors to regulate plant responses to salt stress (Han et al, 2014).…”

Section: Roles In Salt Stressmentioning

confidence: 99%

C2H2 Zinc Finger Proteins: Master Regulators of Abiotic Stress Responses in Plants

et al. 2020

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Abiotic stresses such as drought and salinity are major environmental factors that limit crop yields. Unraveling the molecular mechanisms underlying abiotic stress resistance is crucial for improving crop performance and increasing productivity under adverse environmental conditions. Zinc finger proteins, comprising one of the largest transcription factor families, are known for their finger-like structure and their ability to bind Zn 2+ . Zinc finger proteins are categorized into nine subfamilies based on their conserved Cys and His motifs, including the Cys2/His2-type (C2H2), C3H, C3HC4, C2HC5, C4HC3, C2HC, C4, C6, and C8 subfamilies. Over the past two decades, much progress has been made in understanding the roles of C2H2 zinc finger proteins in plant growth, development, and stress signal transduction. In this review, we focus on recent progress in elucidating the structures, functions, and classifications of plant C2H2 zinc finger proteins and their roles in abiotic stress responses. FIGURE 1 | Structure of C2H2 zinc finger proteins. Structural model of the Arabidopsis C2H2 zinc finger protein STZ produced using the Protein Model Portal tool. Han et al.

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Section: Roles In Salt Stressmentioning

confidence: 99%

C2H2 Zinc Finger Proteins: Master Regulators of Abiotic Stress Responses in Plants

et al. 2020

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“…Plants are capable of adjusting their water balance in response to salt stress. Plants adapt to osmotic stress mainly by reducing transpiration and accumulating osmotic adjustment substances (Chen M. et al, 2018). It has been reported that sorghum accumulated proline and soluble carbohydrates after NaCl treatment for 20 days (Heidari, 2009).…”

Section: Osmotic Stressmentioning

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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“…Correspondingly, plants have evolved some defensive mechanisms such as root Na + exclusion, osmolyte synthesis and antioxidant induction. These defensive mechanisms generally work more effectively in halophytes, and additionally, some special defensive behaviors exist in halophytes for their survival in saline land, such as salt secretion by glands and salt accumulation in vacuoles as osmolytes [8][9][10][11][12]. Plant survival and growth largely depend on photosynthesis.…”

Section: Introductionmentioning

confidence: 99%

Salt adaptability in a halophytic soybean (Glycine soja) involves photosystems coordination

Bian

et al. 2020

BMC Plant Biol

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Background: Glycine soja is a halophytic soybean native to saline soil in Yellow River Delta, China. Photosystem I (PSI) performance and the interaction between photosystem II (PSII) and PSI remain unclear in Glycine soja under salt stress. This study aimed to explore salt adaptability in Glycine soja in terms of photosystems coordination. Results: Potted Glycine soja was exposed to 300 mM NaCl for 9 days with a cultivated soybean, Glycine max, as control. Under salt stress, the maximal photochemical efficiency of PSII (Fv/Fm) and PSI (△MR/MR 0 ) were significantly decreased with the loss of PSI and PSII reaction center proteins in Glycine max, and greater PSI vulnerability was suggested by earlier decrease in △MR/MR 0 than Fv/Fm and depressed PSI oxidation in modulated 820 nm reflection transients. Inversely, PSI stability was defined in Glycine soja, as △MR/MR 0 and PSI reaction center protein abundance were not affected by salt stress. Consistently, chloroplast ultrastructure and leaf lipid peroxidation were not affected in Glycine soja under salt stress. Inhibition on electron flow at PSII acceptor side helped protect PSI by restricting electron flow to PSI and seemed as a positive response in Glycine soja due to its rapid recovery after salt stress. Reciprocally, PSI stability aided in preventing PSII photoinhibition, as the simulated feedback inhibition by PSI inactivation induced great decrease in Fv/Fm under salt stress. In contrast, PSI inactivation elevated PSII excitation pressure through inhibition on PSII acceptor side and accelerated PSII photoinhibition in Glycine max, according to the positive and negative correlation of △MR/MR 0 with efficiency that an electron moves beyond primary quinone and PSII excitation pressure respectively.Conclusion: Therefore, photosystems coordination depending on PSI stability and rapid response of PSII acceptor side contributed to defending salt-induced oxidative stress on photosynthetic apparatus in Glycine soja. Photosystems interaction should be considered as one of the salt adaptable mechanisms in this halophytic soybean.

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Adaptation Mechanism of Salt Excluders under Saline Conditions and Its Applications

Cited by 107 publications

References 84 publications

C2H2 Zinc Finger Proteins: Master Regulators of Abiotic Stress Responses in Plants

C2H2 Zinc Finger Proteins: Master Regulators of Abiotic Stress Responses in Plants

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

Salt adaptability in a halophytic soybean (Glycine soja) involves photosystems coordination

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