Effect of exogenous calcium on growth, nutrients uptake and plasma membrane H+-ATPase and Ca2+-ATPase activities in soybean (Glycine max) seedlings under simulated acid rain stress

Liang, Chanjuan; Zhang, Bingjie

doi:10.1016/j.ecoenv.2018.09.019

Cited by 39 publications

(13 citation statements)

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“…This discrepancy might be attributable to the crop variety, acid rain acidity, and pathogen type [ 5 ]. For example, different plants (rice, soybean and Elaeocarpus glabripetalus seedlings) have different tolerance to acid rain stress [ 10 , 11 , 45 ], so do the pathogens [ 5 ]. Hence, the interaction of different plant-pathogens to environmental stress would be varied.…”

Section: Discussionmentioning

confidence: 99%

“…It is estimated that with further economic development in South China, the pH of precipitation would gradually decrease, and therefore an extremely low pH level (i.e., pH 2.0) was considered in this study. A simulated acid rain was prepared by using a stock solution at pH 1.0 which was concentrated solution of H 2 SO 4 and HNO 3 in a ratio of 4:1 (v/v) by chemical equivalents [ 45 ]. The acid rain solution was then adjusted to pH 5.0, 4.0, 3.0 and 2.0, respectively, with deionized water.…”

Section: Methodsmentioning

confidence: 99%

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Acid Rain Increases Impact of Rice Blast on Crop Health via Inhibition of Resistance Enzymes

Xiang

Zhong

et al. 2020

Plants

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Worldwide, rice blast (Pyricularia oryzae) causes more rice crop loss than other diseases. Acid rain has reduced crop yields globally for nearly a century. However, the effects of acid rain on rice-Pyricularia oryzae systems are still far from fully understood. In this study, we conducted a lab cultivation experiment of P. oryzae under a series of acidity conditions as well as a glasshouse cultivation experiment of rice that was inoculated with P. oryzae either before (P. + SAR) or after (SAR + P.) simulated acid rain (SAR) at pH 5.0, 4.0, 3.0 and 2.0. Our results showed that the growth and pathogenicity of P. oryzae was significantly inhibited with decreasing pH treatments in vitro culture. The SAR + P. treatment with a pH of 4.0 was associated with the highest inhibition of P. oryzae expansion. However, regardless of the inoculation time, higher-acidity rain treatments showed a decreased inhibition of P. oryzae via disease-resistance related enzymes and metabolites in rice leaves, thus increasing disease index. The combined effects of high acidity and fungal inoculation were more serious than that of either alone. This study provides novel insights into the effects of acid rain on the plant–pathogen interaction and may also serve as a guide for evaluating disease control and crop health in the context of acid rain.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Acid Rain Increases Impact of Rice Blast on Crop Health via Inhibition of Resistance Enzymes

Xiang

Zhong

et al. 2020

Plants

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“…In general, plants that are resistant to environmental stress exhibit some good phenotypic and physiological traits to a certain extent 24 . When exposed to adverse environment, plants with good phenotypic morphology and high chlorophyll content can better absorb nutrients from soil and carry out photosynthesis, which is conducive to its growth under environmental stress 26,28 . Therefore, the www.nature.com/scientificreports/ results indicated that the acid resistance of Masson pine family No.…”

Section: Discussionmentioning

confidence: 99%

“…Liu et al 27 (2007) studied the changes of chlorophyll in Masson pine under continuous acid rain treatment, indicating that the photochemical efficiency and energy conversion efficiency were decreased in the case of acid rain erosion and strong light. Therefore, plant chlorophyll content can be used as an indicator of plant stress resistance to characterize the physiological situation of plants under environmental stress 28 . High chlorophyll content and low chlorophyll a / b value are the important traits possessed by excellent Masson pine families 27 .…”

Section: Discussionmentioning

confidence: 99%

Acid resistance of Masson pine (Pinus massoniana Lamb.) families and their root morphology and physiological response to simulated acid deposition

Zhou

Zhang

Chen

et al. 2020

Sci Rep

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Pinus massoniana Lamb. is one of the most sensitive species to acid deposition among forest woody plants, but differences in acid resistance among pine families still exist. It is of great significance to study the differences in acid resistance of Masson pine families and to analyze the physiological regulation mechanism of their acid resistance. In this study, the 100-day-old seedlings of 16 Masson pine families were treated with the simulated acid rain (SAR) at different pH levels (5.6, 4.5, 3.5 and 2.5) for 100 days to investigate the plant morphology, chlorophyll content, and root physiological responses. Results showed that pine family No. 35 maintained the good morphology, high chlorophyll content and organic acids secretion, and low plasma membrane permeability exposed to SAR, while family No. 79 presented the opposite. SAR not only increased the root plasma membrane permeability, but also induced an exudation of organic acids from the pine roots, and the test parameters changed sharply when the SAR pH was lower than 4.5. The results indicated that Masson pine could resist to acidic environment (pH 4.5–5.6), and family No. 35 had the acid resistance while the family No. 79 was sensitive to acid stress. The acid resistance diversity of different pine families had close relation with the root physiological processes, including the root plasma membrane permeability and organic acids secretion. For the future research, the natural genetic variation of Masson pine in response to acid stress and its acid resistance mechanism should be further studied.

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“…This is the likely reason for not observing differences in Ca levels in the plant tissue between the two solution treatments. Further Ca can regulate Mg uptake in plants (Tang and Luan, 2017;Liang and Zhang, 2018), which may have likely resulted in no differences in the levels of Mg in the plant tissue. Therefore, growth reduction in the recycle treatment is mostly due to nutrient deficiencies in the tissue.…”

Section: Effects Of Recycling Nutrient Solution On Plant Growthmentioning

confidence: 99%

Recycling Nutrient Solution Can Reduce Growth Due to Nutrient Deficiencies in Hydroponic Production

2020

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It is common in hydroponics to supply nutrients to crops by maintaining electrical conductivity (EC) of the recycling solution at a target level. Levels of individual nutrients in the solution are generally not assessed as their regular measurement and adjustment can be both expensive and technically challenging. However, the approach of growing crops at a target EC can potentially result in nutrient imbalances in the solution and reduced growth. We quantified the effects of recycling on solution EC changes, tissue nutrient concentration, canopy growth rate, plant water status, and shoot and root weight of lettuce (Lactuca sativa) in a greenhouse. The tap water quality was moderately alkaline and similar to that commonly observed in many commercial greenhouses. In our research, recycling solution maintained at a target EC (1.8 dS⋅m–1) significantly reduced shoot fresh (22–36%) and dry weight compared to the control supplied regularly with freshly prepared solution at the target EC. Further, recycling significantly decreased N, P, K, and Fe and increased Na and Cu levels in the tissue, in addition to increasing solution EC between adjustments compared to the control. Using image analysis of groups of plants, we identified that the negative effects of recycling on canopy area started 2 weeks after transplanting. Based on these results, we hypothesized that certain unwanted compounds (e.g., bicarbonates) and slowly consumed elements (e.g., Ca, Mg) were added to the recycling solution through the alkaline tap water with time. Their accumulation “artificially” increased solution EC and “masked” the lower than optimal levels of major nutrients in the solution, leading to the reductions in the concentration of nutrients in the tissue and plant growth. Supporting this, the negative effects of recycling were not observed when the recycling solution was either discarded after 2 weeks of use or made using reverse osmosis water and continuously used. Our findings aid in proper management of recycling solution in hydroponic lettuce production.

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Effect of exogenous calcium on growth, nutrients uptake and plasma membrane H+-ATPase and Ca2+-ATPase activities in soybean (Glycine max) seedlings under simulated acid rain stress

Cited by 39 publications

References 50 publications

Acid Rain Increases Impact of Rice Blast on Crop Health via Inhibition of Resistance Enzymes

Acid Rain Increases Impact of Rice Blast on Crop Health via Inhibition of Resistance Enzymes

Acid resistance of Masson pine (Pinus massoniana Lamb.) families and their root morphology and physiological response to simulated acid deposition

Recycling Nutrient Solution Can Reduce Growth Due to Nutrient Deficiencies in Hydroponic Production

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