Response of antioxidative system in rice (Oryza sativa) leaves to simulated acid rain stress

Ren, Xiaoqian; Zhu, Jiuzheng; Liu, Hongyue; Xu, Xin; Liang, Chanjuan

doi:10.1016/j.ecoenv.2017.11.046

Cited by 61 publications

(33 citation statements)

References 29 publications

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“…There is more than 40% of terrestrial area experiencing acid rain in China [ 8 ]. The safety of crop ecosystems faces significant challenges because of the negative impacts of acid rain on plant growth and health through injuring leaf structure, destructing cell membrane integrity, degrading chlorophyll, and causing disorder to the antioxidant system and physiological metabolism [ 9 , 10 ].…”

Section: Introductionmentioning

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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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: Introductionmentioning

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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“…Cu/Zn‐SOD is an important component of the defence system against oxidative stress, which converts harmful O 2 − into H 2 O 2 and O 2 , with peroxidase (POD) catalysing H 2 O 2 to water (Gajewska & Skłodowska, ; Liu, Zhang, Qi, & Li, ). Previous studies reported that Cu/Zn‐SOD and POD1 genes were up‐regulated to maintain the normal level of ROS when cells were under oxidative stress (Jakopović et al, ; Ren, Zhu, Liu, Xu, & Liang, ). They both played important role in defence against oxidative stress.…”

Section: Discussionmentioning

confidence: 99%

Protein and transcript profiling analysis of the response of Yarrowia lipolytica Y‐2 in the degradation of ochratoxin A

Zhang

Yang

Zheng

et al. 2019

Annals of Applied Biology

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The occurrence of ochratoxin A (OTA) has been reported in cereals, feeds and food.Biological control of OTA has been considered as a promising strategy. Our previous study has shown that Yarrowia lipolytica Y-2 could degrade OTA. In this study, proteome and transcriptome analysis were performed to investigate the possible mechanisms involved in OTA degradation by Y. lipolytica Y-2 and the responses of this antagonistic yeast to OTA. The results showed that many proteins and genes involved in removal of reactive O 2 species were up-regulated in Y. lipolytica Y-2 to respond to the oxidative stress caused by OTA. Also, some proteins and genes involved in the removal of generated toxicants under stress condition were up-regulated to improve tolerance of this antagonistic yeast to OTA stress. Furthermore, some genes encoding transport proteins and multidrug resistance proteins were up-regulated significantly to transport and expel OTA from cells and alleviate the toxicity to Y. lipolytica Y-2. Notably, the gene ECM14 (encoding putative metallocarboxypeptidase ECM14) directly involved in OTA degradation was up-regulated in Y. lipolytica Y-2 treated with this mycotoxin. To defend against OTA stress, some genes related to tricarboxylic acid cycle were induced by OTA to generate abundant energy for Y. lipolytica Y-2. Besides, the down-regulation of some genes involved in DNA replication and repair decreased the ability of Y. lipolytica Y-2 to repair DNA damage caused by OTA. These results may imply that OTA degradation by this antagonistic yeast was the synergetic effect of multifarious defence responses to OTA stress.

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“…In this way, SOD, CAT and POD together form a complete antioxidant chain. For example, the activities of SOD, CAT and POD were increased to maintain the normal level of O 2 − and H 2 O 2 in cells by upregulating expression levels of Cu/Zn‐SOD, CAT1 and POD1 genes when rice seedlings were exposed to acid rain (Ren et al, ). Glutathione is another part of the first line of antioxidant defence in response to oxidative stress (Hayes & McLellan, ).…”

Section: Discussionmentioning

confidence: 99%

The mechanisms involved in ochratoxin A elimination by Yarrowia lipolytica Y‐2

Zhang

Yang

Apaliya

et al. 2018

Annals of Applied Biology

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Biological control of mycotoxin in cereals, fruits and vegetables have emerged as a promising method. In a previous study, Yarrowia lipolytica Y-2 isolated by our research team showed biocontrol effect on the post-harvest decay of grapes and ochratoxin A (OTA) elimination in polytoma medium. The aim of this study was to elucidate the possible mechanisms of OTA elimination by Y. lipolytica Y-2. The results indicated that OTA elimination by Y. lipolytica Y-2 was attributed to the degradation action of intracellular enzymes but not extracellular enzymes. A degradation product was identified as ochratoxin alpha (OT ) by liquid chromatography-tandem mass spectrometry. The intracellular enzymes precipitated with 65% saturation of ammonium sulphate degrade OTA the most quickly and 97.2% OTA was degraded within 4 h. Analysis of this fraction showed that two proteins of carboxypeptidase were expressed in Y. lipolytica Y-2 but not in Y. lipolytica Polh without the ability to degrade OTA. The results of the protein identification combined with product identification indicated that OTA was degraded to OT by Y. lipolytica Y-2 through the hydrolysis activity of carboxypeptidases. Additionally, many proteins of Y. lipolytica Y-2 involved in stress response and reactive O 2 species elimination also played essential role in OTA degradation.

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Response of antioxidative system in rice (Oryza sativa) leaves to simulated acid rain stress

Cited by 61 publications

References 29 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

Protein and transcript profiling analysis of the response of Yarrowia lipolytica Y‐2 in the degradation of ochratoxin A

The mechanisms involved in ochratoxin A elimination by Yarrowia lipolytica Y‐2

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