Comparative physiological and metabolomic analyses reveal mechanisms of Aspergillus aculeatus-mediated abiotic stress tolerance in tall fescue

Xie, Yan; Sun, Xiaoyan; Feng, Qijia; Luo, Hongji; Wassie, Misganaw; Amee, Maurice; Amombo, Erick; Chen, Liang

doi:10.1016/j.plaphy.2019.07.022

Cited by 14 publications

(12 citation statements)

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“…In addition, we also found that salt stress led to a significant increase in the expression of most BnaAAPs in both the shoots and roots (Fig. 12), and might be associated with salt stress inducing an obvious increase in AA concentrations [50], which contributed to enhancing plant salt resistance [51].…”

Section: Differential Expression Profiling Of Bnaaaps Implied Their Pmentioning

confidence: 76%

“…Soil salinity is one of the most important environmental factors that constrain plant growth, and development, and salt stress significantly reduces rapeseed yield [49]. Salt stress induces an obvious increase in AA concentrations [50], and the enhanced AAP expression promotes Fig. 11 The qRT-PCR-assisted transcriptional characterization of the amino acid permease (AAP) genes in Brassica napus under cadmium (Cd) toxicity.…”

Section: Transcriptional Analysis Of Bnaaaps Under Diverse Nutrient Smentioning

confidence: 99%

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Genome-wide identification of the amino acid permease genes and molecular characterization of their transcriptional responses to various nutrient stresses in allotetraploid rapeseed

et al. 2020

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Background: Nitrogen (N), referred to as a "life element", is a macronutrient essential for optimal plant growth and yield production. Amino acid (AA) permease (AAP) genes play pivotal roles in root import, long-distance translocation, remobilization of organic amide-N from source organs to sinks, and other environmental stress responses. However, few systematic analyses of AAPs have been reported in Brassica napus so far. Results: In this study, we identified a total of 34 full-length AAP genes representing eight subgroups (AAP1-8) from the allotetraploid rapeseed genome (A n A n C n C n , 2n = 4x = 38). Great differences in the homolog number among the BnaAAP subgroups might indicate their significant differential roles in the growth and development of rapeseed plants. The BnaAAPs were phylogenetically divided into three evolutionary clades, and the members in the same subgroups had similar physiochemical characteristics, gene/protein structures, and conserved AA transport motifs. Darwin's evolutionary analysis suggested that BnaAAPs were subjected to strong purifying selection pressure. Ciselement analysis showed potential differential transcriptional regulation of AAPs between the model Arabidopsis and B. napus. Differential expression of BnaAAPs under nitrate limitation, ammonium excess, phosphate shortage, boron deficiency, cadmium toxicity, and salt stress conditions indicated their potential involvement in diverse nutrient stress responses. Conclusions: The genome-wide identification of BnaAAPs will provide a comprehensive insight into their family evolution and AAP-mediated AA transport under diverse abiotic stresses. The molecular characterization of core AAPs can provide elite gene resources and contribute to the genetic improvement of crop stress resistance through the modulation of AA transport.

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Section: Differential Expression Profiling Of Bnaaaps Implied Their Pmentioning

confidence: 76%

Section: Transcriptional Analysis Of Bnaaaps Under Diverse Nutrient Smentioning

confidence: 99%

Genome-wide identification of the amino acid permease genes and molecular characterization of their transcriptional responses to various nutrient stresses in allotetraploid rapeseed

et al. 2020

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“…Previous research found that endophyte-infected tall fescue plants maintained tiller numbers, plant height, and total biomass when grown under saline conditions (Yin et al 2014). The Aspergillus aculeatus inoculated tall fescue plants had lower levels of H 2 O 2 and Na + and higher photosynthetic efficiency than that in uninoculated plants under salinity stress, but there were no differences in metabolites and malondialdehyde content between the inoculated and uninoculated plants (Xie et al 2019). Endophyte infection decreased root concentrations of Na + and Clin tall fescue and meadow fescue [Schedonorus pratensis (Huds.…”

Section: Introductionmentioning

confidence: 82%

Plant growth, ion accumulation, and antioxidant enzymes of endophyte-infected and endophyte-free tall fescue to salinity stress

et al. 2021

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Endophyte-mediated salinity tolerance is largely unknown in tall fescue [Schedonorus arundinaceus (Schreb.)]. The experiment was designed to characterize growth, ion accumulation, and antioxidant metabolism of tall fescue infected by the endophyte Epichloë coenophiala to different levels of salinity stress. Endophyte-infected (E +) and endophyte-free (E−) tall fescue (cv Kentucky 31) plants were exposed to 10 d of 0 (unstressed control), 100 and 200 mM NaCl treatments in a greenhouse, respectively. Salinity stress caused reductions in plant height, leaf fresh weight (LFW), leaf dry weight (LDW), and leaf water content (LWC), and increased Na + concentration, but E + plants had significantly higher LFW, LDW, and LWC under both NaCl treatments and lower Na + than E− plants under 200 mM NaCl. Salinity stress decreased K + and Mg 2+ and did not alter P, and increased Ca 2+ in E + plants and caused no change in Ca 2+ in E− plants; however, endophyte had no effects on these elements. Chlorophyll fluorescence (Fv/Fm), malondialdehyde (MDA) concentration, and activities of superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX) remained unchanged in E + plants, but Fv/Fm was reduced and MDA level and enzyme activities were elevated in E− plants under 200 mM NaCl, where E + plants had significantly higher Fv/Fm and lower MDA, SOD, and APX activities than E− plants. Peroxidase activities increased in E + plants under 200 mM NaCl and in E− plants under both NaCl treatments. The results indicated that endophyte promoted salinity tolerance in tall fescue through maintaining higher growth and photochemical efficiency and lowering Na + accumulation and lipid peroxidation. The significantly induced antioxidant enzyme activities and lipid peroxidation in E− plants suggested a possible enhanced oxidative injury in endophyte-free plants exposed to a high level of salinity stress.

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“…Omic sciences such as genomics [ 19 , 20 , 21 ], transcriptomics [ 22 , 23 , 24 ], proteomics [ 25 , 26 , 27 ], and more recently metabolomics [ 28 , 29 , 30 , 31 ], as well as multi-omics approaches [ 32 , 33 ] have been applied to study the genus Aspergillus . Metabolomics is considered to be the omic that best reflects the phenotype response [ 34 , 35 , 36 ].…”

Section: Introductionmentioning

confidence: 99%

“…The recent untargeted metabolomic studies on Aspergillus have used internal libraries [ 30 ] or general metabolomic databases [ 29 , 30 , 31 ] for metabolite identification. The first step in performing metabolite identification in MS studies is, in most cases, the annotation process.…”

Section: Introductionmentioning

confidence: 99%

Aspergillus Metabolome Database for Mass Spectrometry Metabolomics

Gil-de-la-Fuente

Mamani-Huanca

Stroe

et al. 2021

JoF

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The Aspergillus Metabolome Database is a free online resource to perform metabolite annotation in mass spectrometry studies devoted to the genus Aspergillus. The database was created by retrieving and curating information on 2811 compounds present in 601 different species and subspecies of the genus Aspergillus. A total of 1514 scientific journals where these metabolites are mentioned were added as meta-information linked to their respective compounds in the database. A web service to query the database based on m/z (mass/charge ratio) searches was added to CEU Mass Mediator; these queries can be performed over the Aspergillus database only, or they can also include a user-selectable set of other general metabolomic databases. This functionality is offered via web applications and via RESTful services. Furthermore, the complete content of the database has been made available in .csv files and as a MySQL database to facilitate its integration into third-party tools. To the best of our knowledge, this is the first database and the first service specifically devoted to Aspergillus metabolite annotation based on m/z searches.

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Comparative physiological and metabolomic analyses reveal mechanisms of Aspergillus aculeatus-mediated abiotic stress tolerance in tall fescue

Cited by 14 publications

References 42 publications

Genome-wide identification of the amino acid permease genes and molecular characterization of their transcriptional responses to various nutrient stresses in allotetraploid rapeseed

Genome-wide identification of the amino acid permease genes and molecular characterization of their transcriptional responses to various nutrient stresses in allotetraploid rapeseed

Plant growth, ion accumulation, and antioxidant enzymes of endophyte-infected and endophyte-free tall fescue to salinity stress

Aspergillus Metabolome Database for Mass Spectrometry Metabolomics

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