Photosynthetic and water physiological characteristics of Tamarix chinensis under different groundwater salinity conditions

Xia, Jiangbao; Zhao, Xingbo; Ren, Jiayun; Lang, Ying; Qu, Fanzhu; 徐, 会連

doi:10.1016/j.envexpbot.2017.03.015

Cited by 33 publications

(13 citation statements)

References 38 publications

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“…However, temperature, humidity, and vapor pressure deficit may play a critical role to lower Pn later on the noon hours. The lowering of Ci values when Pn increased may indicate the utilization of carbon for biosynthesizing sugars and related compounds (Xia et al 2017). However, Ci values around 250 μmol m À2 s À1 are showing the typical C3 response for CO 2 (Way et al 2014).…”

Section: Changes In the Photosynthesismentioning

confidence: 97%

Soil Respiration and Photosynthetic Carbon Gain on an Abundant Coastal Land After Plantation of Tamarix chinensis

Hussain¹,

Li²,

Feng³

et al. 2020

Handbook of Halophytes

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A field experiment was performed to assess the dynamics of soil respiration and its key influencing factors in a coastal saline wasteland along the Bohai Sea at 3 and 10 years after planting Tamarix chinensis. The results showed that the cultivation of T. chinensis, which corresponded to relatively higher root biomass and soil-infiltration ability, can result in a significantly higher rate of soil respiration than that of abandoned saline-alkali bare land as well as regulated net photosynthesis along with other CO 2 /H 2 O gas exchange parameters. The root growth rate was the key factor that affected the soil respiration rate more than the total root biomass of the plants did. The soil surface temperature was also an important factor that affected the soil respiration rate in each land, and the soil salt and water contents were closely related to only root respiration on the lands planted with 3-year-old T. chinensis due to the short-term improvement of the soil by the plant community; long-term cultivation of T. chinensis reduced the soil surface salinity during the period of the highest evaporation and provided an adequate carbon source for the growth of bacteria, fungi, and actinomycetes. This research can offer a reference value for the characteristics of carbon sequestration during the process of vegetation regeneration on coastal saline lands.

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Section: Changes In the Photosynthesismentioning

confidence: 97%

Soil Respiration and Photosynthetic Carbon Gain on an Abundant Coastal Land After Plantation of Tamarix chinensis

Hussain¹,

Li²,

Feng³

et al. 2020

Handbook of Halophytes

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“…If C i decreases with the decrease of G s , the decrease of P n is caused by stomatal limitation, otherwise, it is caused by non-stomatal limitation. Therefore, the effects of salt stress on plants can be divided into stomatal limitation period and non-stomatal limitation period (Hejnak et al, 2016;Xia et al, 2017;Yang et al, 2019). At the early stage of salt stress, stomatal closure is the main limiting factor (Sudhir et al, 2004;Yildiztugay et al, 2020) and decrease the activity of ribose 1,5-diphosphate carboxylase/oxygenase (Rubisco), destroy the photosynthetic system, and the chloroplast structure/function or thylakoid energy over excitation are the main limiting factors, at the later stage of salt stress (Chen et al, 2020;Sudhir et al, 2004;Demetriou et al, 2007;Shu et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

H₂O₂/ABA signal pathway participates in the regulation of stomata opening of cucumber leaves under salt stress by putrescine

Jahan

Guo

et al. 2020

Preprint

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The stomatal-aperture is imperative for plant physiological metabolism. The function of polyamines (PAs) in stomatal regulation under stress environment largely remains elucidate. Herein, we investigated the regulatory mechanism of exogenous putrescine (Put) on the stomatal opening of cucumber leaves under salt stress. The results revealed that Put relieved the salt-induced photosynthetic inhibition of cucumber leaves by regulating stomatal-apertures. Put application increased hydrogen peroxide (H2O2) and decreased abscisic acid (ABA) content in leaves under salt stress. The inhibitors of diamine oxidase (DAO), polyamine oxidase (PAO), nicotinamide adenine dinucleotide phosphate oxidase (NADPH) are AG, 1,8-DO and DPI, respectively and pre-treatment with these inhibitors up-regulated key gene NCED of ABA synthase and down-regulated key gene GSHS of reduced glutathione (GSH) synthase. The content of H2O2 and GSH were decreased and ABA content was increased and its influenced trend is AG>1,8-DO>DPI. Moreover, the Put induced down-regulation of ABA content under salt stress blocked by treatment with H2O2 scavenger (DMTU) and GSH scavenger (CNDB). Additionally, the application of DMTU also blocked the increase of GSH content. Collectively, these results suggest that Put can regulate GSH content by promoting H2O2 generation through polyamine metabolic pathway, which inhibits ABA accumulation to achieve stomatal regulation under salt stress.HighlightExogenous putrescine alleviates photosynthesis inhibition in salt-stressed cucumber seedlings by regulating stomatal-aperture.

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“…In our previous research, we found that the salt content of soil columns planted with Tamarix chinensis increased with increasing groundwater salinity under the same groundwater level [29], and the salinity altered the soil water and salt conditions, thus significantly affecting the growth, photosynthetic characteristics, and water consumption performance of T . chinensis [30]. When the groundwater level is deep, the groundwater evaporation rate and volume are small, and the soil does not undergo salinization, even if the evaporation-precipitation ratio is large.…”

Section: Introductionmentioning

confidence: 99%

Transport characteristics of salt ions in soil columns planted with Tamarix chinensis under different groundwater levels

et al. 2019

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The groundwater level is the main factor affecting the distribution of soil salinity and vegetation in the Yellow River Delta (YRD), China, but the response relationship between the spatial distribution of soil salt ions and the groundwater level in the soil- Tamarix chinensis system remains unclear. In order to investigate the patterns of soil salt ions responding to groundwater levels, in the ‘groundwater-soil- T . chinensis ’ system. Soil columns planted with T . chinensis , a constructive species in the YRD, were taken as the study object, and six groundwater levels (0.3, 0.6, 0.9, 1.2, 1.5 and 1.8 m) were simulated under saline mineralization. The results demonstrated the following: As affected by groundwater, Na + and Cl - were the main ions in the T . chinensis -planted soil column, with a trend of decreasing first and then increasing by the increase of soil depth. However, the contents of K + and NO 3 - gradually decreased and CO 3 2- +HCO 3 - gradually increased. As affected by groundwater evaporation, all the salt ions except CO 3 2- +HCO 3 - exhibited different degrees of surface aggregation in the 0–20 cm layer. However, due to the impact of root uptake, the contents of the salt ions rapidly decreased in the root distribution layer (20–50 cm soil layer), which rendered a turning-point layer that was significantly lower than the surface soil layer; such decreases in ion contents showed a relatively large rate of variation. In the whole T . chinensis -planted soil column, with increasing groundwater level, the contents of Na + , Cl - , Ca 2+ , Mg 2+ , and NO 3 - all tended to first decrease, then increase and decrease again, but the content of CO 3 2- +HCO 3 - first decreased and then increased. Therefore, the 0.9 m groundwater level was the turning point at which the main salt ions underwent significant changes. The contents of Na + , Cl - , Ca 2+ and Mg 2+ in the T . chinensis planted soil column exhibited moderate variability (14.46%111.36%) at most groundwater level except less than 0.9 m. The...

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Photosynthetic and water physiological characteristics of Tamarix chinensis under different groundwater salinity conditions

Cited by 33 publications

References 38 publications

Soil Respiration and Photosynthetic Carbon Gain on an Abundant Coastal Land After Plantation of Tamarix chinensis

Soil Respiration and Photosynthetic Carbon Gain on an Abundant Coastal Land After Plantation of Tamarix chinensis

H₂O₂/ABA signal pathway participates in the regulation of stomata opening of cucumber leaves under salt stress by putrescine

Transport characteristics of salt ions in soil columns planted with Tamarix chinensis under different groundwater levels

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Photosynthetic and water physiological characteristics of Tamarix chinensis under different groundwater salinity conditions

Cited by 33 publications

References 38 publications

Soil Respiration and Photosynthetic Carbon Gain on an Abundant Coastal Land After Plantation of Tamarix chinensis

Soil Respiration and Photosynthetic Carbon Gain on an Abundant Coastal Land After Plantation of Tamarix chinensis

H2O2/ABA signal pathway participates in the regulation of stomata opening of cucumber leaves under salt stress by putrescine

Transport characteristics of salt ions in soil columns planted with Tamarix chinensis under different groundwater levels

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H₂O₂/ABA signal pathway participates in the regulation of stomata opening of cucumber leaves under salt stress by putrescine