Evidence of Arabidopsis salt acclimation induced by up‐regulation of <i>HY1</i> and the regulatory role of RbohD‐derived reactive oxygen species synthesis

Xie, Yanjie; Xu, Sheng; Han, Bin; Wu, Mingzhu; Yuan, Xuesong; Han, Yi; Gu, Quan; Xu, Daokun; Yang, Qing; Shen, Wenbiao

doi:10.1111/j.1365-313x.2011.04488.x

Cited by 237 publications

(222 citation statements)

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“…This can be achieved by either seed priming, or by direct irrigation of plants prior high dose 14 salt stress (Patade et al, 2009;Xie et al, 2011). In the present work in order to determine the effectiveness of salt acclimation young wheat plants were trained with low concentration of NaCl before irrigation with high salinity and the acclimation mechanisms were investigated.…”

Section: Discussionmentioning

confidence: 99%

Salt acclimation processes in wheat

Janda

Darkó

Shehata

et al. 2016

Plant Physiology and Biochemistry

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Young wheat plants (Triticum aestivum L. cv. Mv Béres) were exposed to 0 or 25 mM NaCl for 11 days (salt acclimation). Thereafter the plants were irrigated with 500 mM NaCl for 5 days (salt stress). Irrigating the plants with a low concentration of NaCl successfully led to a reduction in chlorotic symptoms and in the impairment of the photosynthetic processes when the plants were exposed to subsequent high-dose salt treatment. After exposure to a high concentration of NaCl there was no difference in leaf Na content between the salt-acclimated and non-acclimated plants, indicating that salt acclimation did not significantly modify Na transport to the shoots. While the polyamine level was lower in salt-treated plants than in the 2 control, salt acclimation led to increased osmotic potential in the leaves. Similarly, the activities of certain antioxidant enzymes, namely glutathione reductase, catalase and ascorbate peroxidase, were significantly higher in salt-acclimated plants. The results also suggest that while SOS1, SOS2 or NHX2 do not play a decisive role in the salt acclimation processes in young wheat plants; another stress-related gene, WALI6, may contribute to the success of the salt acclimation processes. The present study suggested that the responses of wheat plants to acclimation with low level of salt and to treatment with high doses of salt may be fundamentally different.

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Section: Discussionmentioning

confidence: 99%

Salt acclimation processes in wheat

Janda

Darkó

Shehata

et al. 2016

Plant Physiology and Biochemistry

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“…Recent studies in plants demonstrated that HO contributes to alleviating the effects of salt stress. These studies found that the activity of HO was induced due to oxidative stress under salinity conditions (Zilli et al, 2008(Zilli et al, , 2009Xie et al, 2008Xie et al, , 2011Wei et al, 2013). …”

Section: Introductionmentioning

confidence: 99%

Antioxidant activity of heme oxygenase 1 in Brassica juncea (L.) Czern.(Indian mustard) under salt stress

Verma¹,

Dixit²,

Shekhawat³

et al. 2015

Turk J Biol

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IntroductionAbiotic stress is a global agricultural issue that limits plant growth and yield. Amongst abiotic stresses, salt stress leads to significant crop losses worldwide (Greenway and Munns, 1980). Although natural salts are present in soil, their increased concentration affects plant growth adversely. Rao et al. (2008) reported that salinity affects about 932 million hectares of land globally. In plant cells under salt stress, Na + and Clions accumulate in cytoplasm and lower the external water potential, resulting in turgor loss (Binzel et al., 1988). It creates an imbalance of cellular ions that results in ion toxicity, or osmotic stress, followed by significant oxidative stress (Gosset et al., 1996;Goemez et al., 1999;Hasegawa et al., 2000). Together, these factors lead to decreased plant growth, development, and survival. Elevated amounts of reactive oxygen species (ROS) such as superoxide (O 2•ˉ) , hydrogen peroxide (H 2 O 2 ), and hydroxyl (OH • ) radicals can critically disturb cellular homeostasis and standard metabolism through oxidative damage to protein, lipids, and nucleic acid (Baxter et al., 2007).Plants elicit a molecular response to prevent oxidative damage due to ROS production and adjust to the oxidative stress (Baxter et al., 2007;Demirkaya, 2014;Yaycılı and Alikamanoğlu, 2012). They have developed a multifaceted antioxidant defense with enzymatic molecules, including ascorbate peroxidase (APX, EC 1.11.1.11), glutathione reductase (GR, E.C. 1.6.4.2), and peroxidase (POD, EC 1.11.1.7). All these molecules play an important role in scavenging ROS formed during oxidative damage (Erdal and Çakırlar, 2014;Petrić et al., 2014).Recently, the role of heme oxygenase (HO, EC 1.14.99.3) has been recognized among plant defenses as a catalyst for the oxidation of heme to biliverdin IXα (BV), CO, and

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“…Previously, it was reported that treatment of potato (Solanum tuberosum) tubers with hyphal wall components from Phytophthora infestans causes a rapid and transient accumulation of H 2 O 2 at 1 h (phase I), followed by a massive oxidative burst at 6 to 9 h (phase II; Kobayashi et al, 2007). Similarly, biphasic ROS production was recently observed in plants subjected to other stresses such as ozone and H 2 O 2 (Xie et al, 2011). Despite these results, detailed studies on biphasic ROS production have not been performed.…”

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Synergistic Biosynthesis of Biphasic Ethylene and Reactive Oxygen Species in Response to HemibiotrophicPhytophthora parasiticain Tobacco Plants

Park

2012

Plant Physiology

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We observed the biphasic production of ethylene and reactive oxygen species (ROS) in susceptible tobacco (Nicotiana tabacum 'Wisconsin 38') plants after shoot inoculation with Phytophthora parasitica var nicotianae. The initial transient increase in ROS and ethylene at 1 and 3 h (phase I), respectively, was followed by a second massive increase at 48 and 72 h (phase II), respectively, after pathogen inoculation. This biphasic pattern of ROS production significantly differed from the hypersensitive response exhibited by cryptogein-treated wild-type tobacco plants. The biphasic increase in ROS production was mediated by both NADPH oxidase isoforms, respiratory burst oxidase homolog (Rboh) D and RbohF. Conversely, different 1-aminocyclopropane-1-carboxylic acid synthase members were involved in specific phases of ethylene production: NtACS4 in the first phase and NtACS1 in the second phase. Biphasic production of ROS was inhibited in transgenic antisense plant lines expressing 1-aminocyclopropane-1-carboxylic acid synthase/oxidase or ethylene-insensitive3 as well as in transgenic plants impaired in ROS production. All tested transgenic plants were more tolerant against P. parasitica var nicotianae infection as determined based on trypan blue staining and pathogen proliferation. Further, silencing of NtACS4 blocked the second massive increase in ROS production as well as pathogen progression. Pathogen tolerance was due to the inhibition of ROS and ethylene production, which further resulted in lower activation of ROS-detoxifying enzymes. Accordingly, the synergistic inhibition of the second phase of ROS and ethylene production had protective effects against pathogen-induced cell damage. We conclude that the levels of ethylene and ROS correlate with compatible P. parasitica proliferation in susceptible plants.

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Evidence of Arabidopsis salt acclimation induced by up‐regulation of HY1 and the regulatory role of RbohD‐derived reactive oxygen species synthesis

Cited by 237 publications

References 64 publications

Salt acclimation processes in wheat

Salt acclimation processes in wheat

Antioxidant activity of heme oxygenase 1 in Brassica juncea (L.) Czern.(Indian mustard) under salt stress

Synergistic Biosynthesis of Biphasic Ethylene and Reactive Oxygen Species in Response to HemibiotrophicPhytophthora parasiticain Tobacco Plants

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