Alleviation of the effects of saline-alkaline stress on maize seedlings by regulation of active oxygen metabolism by Trichoderma asperellum

Fu, Jiawei; Liu, Zhihua; Li, Zuotong; Wang, Yufeng; Yang, Kejun

doi:10.1371/journal.pone.0179617

Cited by 62 publications

(35 citation statements)

References 53 publications

(53 reference statements)

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“…This is consistent with previous studies showing that T. asperellum treatment increased SOD activity of ‘XY335’ and ‘JY417’ maize seedlings in saline soil and increased the activity of antioxidant enzymes under NaCl stress in cucumbers. 10 , 37 In this study, CAT activity increased; these differs from a previous report showing that CAT activity was reduced in leaves and roots following T. asperellum treatment. 37 POD activity was decreased following treatment.…”

Section: Discussioncontrasting

confidence: 99%

Biocontrol potential of saline- or alkaline-tolerant Trichoderma asperellum mutants against three pathogenic fungi under saline or alkaline stress conditions

Guo

Wang

Huang

et al. 2018

Brazilian Journal of Microbiology

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Salinity and alkalinity are major abiotic stresses that limit growth and development of poplar. We investigated biocontrol potential of saline- and alkaline-tolerant mutants of Trichoderma asperellum to mediate the effects of salinity or alkalinity stresses on Populus davidiana×P. alba var. pyramidalis (PdPap poplar) seedlings. A T-DNA insertion mutant library of T. asperellum was constructed using an Agrobacterium tumefaciens mediated transformation system; this process yielded sixty five positive transformants (T1-T65). The salinity tolerant mutant, T59, grew in Potato Dextrose Agar (PDA) containing up to 10% (1709.40mM) NaCl. Under NaCl-rich conditions, T59 was most effective in inhibiting Alternaria alternata (52.00%). The alkalinity tolerant mutants, T3 and T5, grew in PDA containing up to 0.4% (47.62mM) NaHCO. The ability of the T3 and T5 mutants to inhibit Fusarium oxysporum declined as NaHCO concentrations increased. NaHCO tolerance of the PdPap seedlings improved following treatment with the spores of the WT, T3, and T5 strains. The salinity tolerant mutant (T59) and two alkalinity tolerant mutants (T3 and T5) generated in this study can be applied to decrease the incidence of pathogenic fungi infection under saline or alkaline stress.

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Section: Discussioncontrasting

confidence: 99%

Biocontrol potential of saline- or alkaline-tolerant Trichoderma asperellum mutants against three pathogenic fungi under saline or alkaline stress conditions

Guo

Wang

Huang

et al. 2018

Brazilian Journal of Microbiology

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“…In this study, we aimed to identify factors regulating maize shoot Na + homeostasis under saline-alkaline conditions. Given sodium hydrogen carbonate (NaHCO 3 ) is one of the major basic salts in nature environments 30 , we used 100 mM NaHCO 3 to mimic the saline-alkaline stress, and both the Na + concentration (100 mM) and pH value (pH 8.8) were agronomic relevance 12,32 . Firstly, we compared the shoot Na + contents in maize seedlings grown under NaHCO 3 and neutral salt (NaCl) conditions.…”

Section: Resultsmentioning

confidence: 99%

“…mays) is a glycophytic specie that is sensitive to saline-alkaline stress 29 . Previous studies have shown that natural maize inbred lines show large variations of sensitivity to saline and saline-alkaline stress, and which is substantially attributed to the variations of shoot Na + contents 30,31 . Here, we show that a calcium-binding EF-hand protein ZmNSA1 underlies the natural variations of shoot-Na + contents under NaHCO 3 condition by a GWAS analysis.…”

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confidence: 99%

Natural variation of an EF-hand Ca2+-binding-protein coding gene confers saline-alkaline tolerance in maize

et al. 2020

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Sodium (Na + ) toxicity is one of the major damages imposed on crops by saline-alkaline stress. Here we show that natural maize inbred lines display substantial variations in shoot Na + contents and saline-alkaline (NaHCO 3 ) tolerance, and reveal that ZmNSA1 (Na + Content under Saline-Alkaline Condition) confers shoot Na + variations under NaHCO 3 condition by a genome-wide association study. Lacking of ZmNSA1 promotes shoot Na + homeostasis by increasing root Na + efflux. A naturally occurred 4-bp deletion decreases the translation efficiency of ZmNSA1 mRNA, thus promotes Na + homeostasis. We further show that, under saline-alkaline condition, Ca 2+ binds to the EF-hand domain of ZmNSA1 then triggers its degradation via 26S proteasome, which in turn increases the transcripts levels of PM-H + -ATPases (MHA2 and MHA4), and consequently enhances SOS1 Na + /H + antiportermediated root Na + efflux. Our studies reveal the mechanism of Ca 2+ -triggered saline-alkaline tolerance and provide an important gene target for breeding saline-alkaline tolerant maize varieties.

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“…Leaf relative water content was calculated as (FW − DW)/(TW − DW) ×100. Leaf ion content was assayed following the method of Fu et al [41]. Oven-dried leaf tissues were ground and digested using sulfuric peroxide.…”

Section: Observations Sampling and Sample Analysismentioning

confidence: 99%

Effect of Straw Biochar on Soil Properties and Wheat Production under Saline Water Irrigation

et al. 2019

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Use of saline water for irrigation is essential to mitigate increasing agricultural water demands in arid and semi-arid regions. The objective of this study is to address the potential of using straw biochar as a soil amendment to promote wheat production under saline water irrigation. A field experiment was conducted in a clay loam soil from eastern China during 2016/2017 and 2017/2018 winter wheat season. There were five treatments: freshwater irrigation (0.3 dS m−1), saline water irrigation (10 dS m−1), saline water irrigation (10 dS m−1) combined with biochar of 10, 20, 30 t ha−1. Saline water irrigation alone caused soil salinization and decreased wheat growth and yield. The incorporation of biochar decreased soil bulk density by 5.5%–11.6% and increased permeability by 35.4%–49.5%, and improved soil nutrient status. Biochar also reduced soil sodium adsorption ratio by 25.7%–32.6% under saline water irrigation. Furthermore, biochar alleviated salt stress by maintaining higher leaf relative water content and lower Na+/K+ ratio, and further enhanced photosynthesis and relieved leaf senescence during reproductive stages, leading to better grain formation. Compared to saline water irrigation alone, biochar application of 10 and 20 t ha−1 significantly increased wheat grain yield by 8.6 and 8.4%, respectively. High dose of biochar might increase soil salinity and limit N availability. In the study, biochar amendment at 10 t ha−1 would be a proper practice at least over two years to facilitate saline water irrigation for wheat production. Long-term studies are recommended to advance the understanding of the sustainable use of straw biochar.

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Alleviation of the effects of saline-alkaline stress on maize seedlings by regulation of active oxygen metabolism by Trichoderma asperellum

Cited by 62 publications

References 53 publications

Biocontrol potential of saline- or alkaline-tolerant Trichoderma asperellum mutants against three pathogenic fungi under saline or alkaline stress conditions

Biocontrol potential of saline- or alkaline-tolerant Trichoderma asperellum mutants against three pathogenic fungi under saline or alkaline stress conditions

Natural variation of an EF-hand Ca2+-binding-protein coding gene confers saline-alkaline tolerance in maize

Effect of Straw Biochar on Soil Properties and Wheat Production under Saline Water Irrigation

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