Characterization of Bacterial Volatiles and Their Impact on Plant Health Under Abiotic Stress

The calcineurin B-like protein (CBL) and CBL-interacting protein kinase (CIPK) play important roles in plant signal transduction and response to abiotic stress. Plants of Medicago genus contain many important forages, and their growth is often affected by a variety of abiotic stresses. However, studies on the CBL and CIPK family member and their function are rare in Medicago. In this study, a total of 23 CBL and 58 CIPK genes were identified from the genome of Medicago sativa as an important forage crop, and Medicaog truncatula as the model plant. Phylogenetic analysis suggested that these CBL and CIPK genes could be classified into five and seven groups, respectively. Moreover, these genes/proteins showed diverse exon-intron organizations, architectures of conserved protein motifs. Many stress-related cis-acting elements were found in their promoter region. In addition, transcriptional analyses showed that these CBL and CIPK genes exhibited distinct expression patterns in various tissues, and in response to drought, salt, and abscisic acid treatments. In particular, the expression levels of MtCIPK2 (MsCIPK3), MtCIPK17 (MsCIPK11), and MtCIPK18 (MsCIPK12) were significantly increased under PEG, NaCl, and ABA treatments. Collectively, our study suggested that CBL and CIPK genes play crucial roles in response to various abiotic stresses in Medicago.

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C4 Bacterial Volatiles Improve Plant Health

Pathogens ◽

10.3390/pathogens10060682 ◽

2021 ◽

Vol 10 (6) ◽

pp. 682

Author(s):

Bruno Henrique Silva Dias ◽

Sung-Hee Jung ◽

Juliana Velasco de Castro Oliveira ◽

Choong-Min Ryu

Keyword(s):

Plant Growth ◽

Volatile Compounds ◽

Large Scale ◽

Growth Promotion ◽

Plant Growth Promoting Rhizobacteria ◽

Plant Health ◽

Systemic Resistance ◽

Potential Applications ◽

Plant Growth Promoting ◽

Bacterial Volatiles

Plant growth-promoting rhizobacteria (PGPR) associated with plant roots can trigger plant growth promotion and induced systemic resistance. Several bacterial determinants including cell-wall components and secreted compounds have been identified to date. Here, we review a group of low-molecular-weight volatile compounds released by PGPR, which improve plant health, mostly by protecting plants against pathogen attack under greenhouse and field conditions. We particularly focus on C4 bacterial volatile compounds (BVCs), such as 2,3-butanediol and acetoin, which have been shown to activate the plant immune response and to promote plant growth at the molecular level as well as in large-scale field applications. We also disc/ uss the potential applications, metabolic engineering, and large-scale fermentation of C4 BVCs. The C4 bacterial volatiles act as airborne signals and therefore represent a new type of biocontrol agent. Further advances in the encapsulation procedure, together with the development of standards and guidelines, will promote the application of C4 volatiles in the field.

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Characterization of PyMAPK2, a D group mitogen-activated protein kinase gene from Pyropia yezoensis responding to various abiotic stress

Algal Research ◽

10.1016/j.algal.2021.102445 ◽

2021 ◽

Vol 59 ◽

pp. 102445

Author(s):

Fanna Kong ◽

Daoying Dong ◽

Na Li ◽

Bin Sun ◽

Meijuan Sun

Keyword(s):

Abiotic Stress ◽

Protein Kinase ◽

Pyropia Yezoensis ◽

Mitogen Activated Protein Kinase ◽

Kinase Gene ◽

Mitogen Activated Protein ◽

Protein Kinase Gene

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Functional Characterization of DEAD-Box RNA Helicases in Arabidopsis thaliana under Abiotic Stress Conditions

Plant and Cell Physiology ◽

10.1093/pcp/pcn125 ◽

2008 ◽

Vol 49 (10) ◽

pp. 1563-1571 ◽

Cited By ~ 57

Author(s):

Jin Sun Kim ◽

Kyung Ae Kim ◽

Tae Rin Oh ◽

Chul Min Park ◽

Hunseung Kang

Keyword(s):

Arabidopsis Thaliana ◽

Abiotic Stress ◽

Functional Characterization ◽

Stress Conditions ◽

Rna Helicases ◽

Dead Box

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Systematic discovery and characterization of stress-related microRNA genes in Oryza sativa

Biologia ◽

10.1515/biolog-2015-0001 ◽

2015 ◽

Vol 70 (1) ◽

Cited By ~ 1

Author(s):

Kai Bin Xie ◽

Xue Zhou ◽

Tian Hai Zhang ◽

Bao Long Zhang ◽

Li Ming Chen ◽

...

Keyword(s):

Abiotic Stress ◽

Stress Responses ◽

Systematic Investigation ◽

Chemical Toxicity ◽

Promoter Regions ◽

Crop Species ◽

Translation Inhibition ◽

Microrna Genes ◽

Insight Into

AbstractAbiotic stresses including drought, salinity, extreme temperatures, chemical toxicity and oxidative are the natural status of the environment to exert serious threats to agriculture. Abiotic stress-related microRNAs (ASmiRNAs) are a group of microRNAs (miRNAs) regulating stress responses in plants. However, the systematic investigation of ASmiRNAs is limited in Rice (O. sativa), a typical abiotic stress-resistant crop species. In the present work, we systematically investigated ASmiRNAs in silico. First, we identified 177 putative ASmiRNAs in O.sativa. Second, we found most ASmiRNAs were driven by TATA-promoter and most stress-related miRNA promoter regions contained the stress-related elements. Third, we found many ASmiRNAs families were species/family specific and a set of miRNAs might derive from genomic repeat-sequences in O. sativa. Finally, we found the ASmiRNAs in O. sativa target 289 genes with 1050 predicted target sites in which 98% sites have cleavage activity and 2% sites have translation inhibition activity. In conclusion, our findings provide an insight into both the function and evolution of ASmiRNAs and improve our understanding on the mechanism of abiotic stress resistance in O. sativa.

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Metabolomics, a Powerful Tool for Understanding Plant Abiotic Stress

Agronomy ◽

10.3390/agronomy11050824 ◽

2021 ◽

Vol 11 (5) ◽

pp. 824

Author(s):

Fredy P. Carrera ◽

Carlos Noceda ◽

María G. Maridueña-Zavala ◽

Juan M. Cevallos-Cevallos

Keyword(s):

Abiotic Stress ◽

Abiotic Stresses ◽

High Salinity ◽

Living Organism ◽

Resistance Strategies ◽

Response To Stress ◽

Biochemical State ◽

Plant Abiotic Stress

Metabolomics is a technology that generates large amounts of data and contributes to obtaining wide and integral explanations of the biochemical state of a living organism. Plants are continuously affected by abiotic stresses such as water scarcity, high temperatures and high salinity, and metabolomics has the potential for elucidating the response-to-stress mechanisms and develop resistance strategies in affected cultivars. This review describes the characteristics of each of the stages of metabolomic studies in plants and the role of metabolomics in the characterization of the response of various plant species to abiotic stresses.

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