Biomonitoring chromium III or VI soluble pollution by moss chlorophyll fluorescence

Chen, Yang-Er; Mao, Hao-Tian; Ma, Jie; Wu, Nan; Zhang, Chaoming; Su, Yan-Qiu; Zhang, Zhongwei; Yuan, Ming; Zhang, Huaiyu; Zeng, Xianyin; Yuan, Shu

doi:10.1016/j.chemosphere.2017.11.177

Cited by 24 publications

(19 citation statements)

References 42 publications

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“…The concentrations of Na + and K + were determined following the method of Chen et al (). The root apices and leaves were thoroughly rinsed three times with distilled deionized water, and then oven‐dried at 75°C for 48 h. The dried samples (100 mg) were incubated with HNO 3 (68%) and then were digested in a microwave digestion system (Ethos 900, Milestone Srl.…”

Section: Methodsmentioning

confidence: 99%

Exogenous melatonin enhances salt stress tolerance in maize seedlings by improving antioxidant and photosynthetic capacity

Chen

Mao

Sun

et al. 2018

Physiologia Plantarum

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208

108

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Melatonin (N-acetyl-5-methoxytryptamine) is an important biological hormone in many abiotic stress responses and developmental processes. In this study, the protective roles of melatonin were investigated by measuring the antioxidant defense system and photosynthetic characteristics in maize under salt stress. The results indicated that NaCl treatment led to the decrease in plant growth, chlorophyll contents and photochemical activity of photosystem II (PSII). However, the levels of reactive oxygen species increased significantly under salt stress. Meanwhile, we found that application of exogenous melatonin alleviated reactive oxygen species burst and protected the photosynthetic activity in maize seedlings under salt stress through the activation of antioxidant enzymes. In addition, 100 μM melatonin-treated plants showed high photosynthetic efficiency and salinity. Immunoblotting analysis of PSII proteins showed that melatonin application alleviated the decline of 34 kDa PSII reaction center protein (D1) and the increase of PSII subunit S protein. Taken together, our study promotes more comprehensive understanding in the protective effects of exogenous melatonin in maize under salt stress, and it may be involved in activation of antioxidant enzymes and regulation of PSII proteins.

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Section: Methodsmentioning

confidence: 99%

Exogenous melatonin enhances salt stress tolerance in maize seedlings by improving antioxidant and photosynthetic capacity

Chen

Mao

Sun

et al. 2018

Physiologia Plantarum

Self Cite

208

108

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show abstract

“…Determination of Na + , K + and Mg 2+ content Na + , K + and Mg 2+ concentrations in the wheat leaves and roots were determined according to the method of Chen et al (2018). The roots and leaves were rinsed three times with deionized water, heated to 105°C for 15 min, and dried at 75°C for 48 h. The dried samples (100 mg) were added to 68% (w/v) HNO 3 and digested in a microwave oven for 30 min.…”

Section: Photosynthetic Pigment Content and Characteristics And Solubmentioning

confidence: 99%

Effects of Bacillus methylotrophicus M4‐1 on physiological and biochemical traits of wheat under salinity stress

Wang²,

Tian

et al. 2020

J Appl Microbiol

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Aim: The aim of this study was to evaluate the ability of Bacillus methylotrophicus M4-1 to protect winter wheat from the harmful effects of soil salinity and alkalinity. Methods and Results: We isolated the halotolerant B. methylotrophicus M4-1. Two representative soils with different salt contents (S1, 213 ls cm À1 ; S2, 786 ls cm À1) in the Yellow River delta region of China were selected for experiments. The effects of the M4-1 strain on the typical wheat variety (Jimai 21) in this environment were proven. In S1 soil, the M4-1 strain reduced the wheat rhizosphere soil pH (1Á61%) and electrical conductivity (EC) (8Á01%) and increased the exchangeable K content (11Á14%). The uptake of Mg 2+ (20Á73%) by wheat roots and K + (8Á84%) by leaves was increased, and the content of Na + (23Á62%) in leaves was reduced. In S2 soil, the M4-1 strain was able to reduce soil EC (2Á56%) and increase exchangeable K (11Á20%) content. The absorption of K + (13Á28%) in wheat leaves was increased, and the content of Na + (12Á41%) in roots was decreased. Total N and organic matter contents in rhizosphere soil were significantly positively correlated with wheat growth and salt tolerance, whereas EC showed a significant negative correlation. Conclusions: M4-1 attenuates salt stress injury in wheat under both low and high salt stress. Significance and Impact of the Study: We demonstrated the efficacy and value of plant growth-promoting rhizobacteria addition to protect winter wheat against salt stress and improve crop yield. We also elucidated the physicochemical and biochemical interactions among M4-1, the rhizosphere and the host plant.

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“…The HDTMA units aggregated on the external zeolite surface creating a bilayer and covering or blocking some of the zeolitic pores. As a result the modification of zeolite with HDTMA decreased its surface area and pore volume and increased its average pore size [11].…”

Section: Soil Experimentsmentioning

confidence: 99%

“…It can be leached immediately and easily stay in the groundwater and subsoil. Many industries produce effluents with high concentrations of chromium in different oxidation states during the processes of chrome plating, textile and paper manufacturing, stainless steel production, leather tanning [3,4]. The treatment of effluents before discharging them into the environment becomes necessary.…”

Section: Introductionmentioning

confidence: 99%

Removal of Cr (VI) and Cr (III) From Polluted Water and Soil Sown with Beet (Beta Vulgaris) or Celery (Apium Graveolens) after the Addition of Modified Zeolites

Brozou¹,

Ioannou²,

Dimirkou³

2018

Int J Waste Resour

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Clinoptilolite, which was modified with hexadecyltrimethylammonium-bromide solution (HDTMA-Br) in a proportion of 1/8 w/v (Ζ1), was applied for the adsorption of chromate anions from aqueous solutions. Different initial concentrations of chromate anions from 0 to 145 ppm were added as K 2 Cr 2 O 7 to 1 g of modified zeolite adsorbent. Zeolite (clinoptilolite, Z) was also used for comparison reasons. The kinetic analysis of both adsorbents (Z, Z1) was studied at 25°C. Equilibrium isotherms of chromate anions were studied for clinoptilolite and modified zeolite at 25, 40 and 60°C. According to the kinetic analysis, the chromate anions adsorption capacity reached at 1115.10 mg Cr (VI)/kg adsorbent for Z1 and 35.05 mg Cr (VI) kg for Z. According to isotherms, the adsorption of Cr (VI) on Z1 and Z did not increase with the increase of temperature indicating that the whole adsorption mechanism is controlled by chemisorption and not by physical adsorption. Modified zeolite and zeolite were tested to two different soils, i.e. a soil amendments. The modification of clinoptilolite with HDTMA-Br leads to the creation of positively charged surface sites of zeolite increasing the adsorption of Cr (VI) as chromate anions. Such adsorbents can be applied for the removal of heavy metals and dyes in an anionic form from wastewater and soil solutions where negative charged sites of clinoptilolite present low adsorption capacity.

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Biomonitoring chromium III or VI soluble pollution by moss chlorophyll fluorescence

Cited by 24 publications

References 42 publications

Exogenous melatonin enhances salt stress tolerance in maize seedlings by improving antioxidant and photosynthetic capacity

Exogenous melatonin enhances salt stress tolerance in maize seedlings by improving antioxidant and photosynthetic capacity

Effects of Bacillus methylotrophicus M4‐1 on physiological and biochemical traits of wheat under salinity stress

Removal of Cr (VI) and Cr (III) From Polluted Water and Soil Sown with Beet (Beta Vulgaris) or Celery (Apium Graveolens) after the Addition of Modified Zeolites

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