scholarly journals Meta-analysis of whole-transcriptome data suggests new mechanisms of auxin-induced ethylene biosynthesis and signaling in Arabidopsis thaliana

2018 ◽  
pp. 45-45
Keyword(s):  
Arabidopsis Thaliana ◽  
Meta Analysis ◽  
Ethylene Biosynthesis ◽  
Transcriptome Data ◽  
Whole Transcriptome ◽  
Ethylene Biosynthesis And Signaling

Heat stress differentially modifies ethylene biosynthesis and signaling in pea floral and fruit tissues

2017 ◽  
Vol 95 (3) ◽  
pp. 313-331 ◽  
Author(s):  
Raghavendra P. Savada ◽  
Jocelyn A. Ozga ◽  
Charitha P. A. Jayasinghege ◽  
Kosala D. Waduthanthri ◽  
Dennis M. Reinecke
Keyword(s):  
Heat Stress ◽  
Ethylene Biosynthesis ◽  
Ethylene Biosynthesis And Signaling

scholarly journals Overexpression of SgGH3.1 from Fine-Stem Stylo (Stylosanthes guianensis var. intermedia) Enhances Chilling and Cold Tolerance in Arabidopsis thaliana

Genes ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 1367
Author(s):  
Ming Jiang ◽  
Long-Long Ma ◽  
Huai-An Huang ◽  
Shan-Wen Ke ◽  
Chun-Sheng Gui ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Cold Stress ◽  
Stress Responses ◽  
Molecular Mechanisms ◽  
Transcriptome Profiling ◽  
Pasture Legumes ◽  
Cold Tolerant ◽  
Whole Transcriptome ◽  
Altered Sensitivity ◽  
Exogenous Iaa

Stylosanthes (stylo) species are commercially significant tropical and subtropical forage and pasture legumes that are vulnerable to chilling and frost. However, little is known about the molecular mechanisms behind stylos’ responses to low temperature stress. Gretchen-Hagen 3 (GH3) proteins have been extensively investigated in many plant species for their roles in auxin homeostasis and abiotic stress responses, but none have been reported in stylos. SgGH3.1, a cold-responsive gene identified in a whole transcriptome profiling study of fine-stem stylo (S. guianensis var. intermedia) was further investigated for its involvement in cold stress tolerance. SgGH3.1 shared a high percentage of identity with 14 leguminous GH3 proteins, ranging from 79% to 93%. Phylogenetic analysis classified SgGH3.1 into Group Ⅱ of GH3 family, which have been proven to involve with auxins conjugation. Expression profiling revealed that SgGH3.1 responded rapidly to cold stress in stylo leaves. Overexpression of SgGH3.1 in Arabidopsis thaliana altered sensitivity to exogenous IAA, up-regulated transcription of AtCBF1-3 genes, activated physiological responses against cold stress, and enhanced chilling and cold tolerances. This is the first report of a GH3 gene in stylos, which not only validated its function in IAA homeostasis and cold responses, but also gave insight into breeding of cold-tolerant stylos.

scholarly journals Deciphering Auxin-Ethylene Crosstalk at a Systems Level

2018 ◽  
Vol 19 (12) ◽  
pp. 4060 ◽  
Author(s):  
Elena V. Zemlyanskaya ◽  
Nadya A. Omelyanchuk ◽  
Elena V. Ubogoeva ◽  
Victoria V. Mironova
Keyword(s):  
Large Scale ◽  
Tissue Specificity ◽  
Ethylene Biosynthesis ◽  
Growth Responses ◽  
Plant Morphogenesis ◽  
Molecular Events ◽  
Approaches To Study ◽  
Molecular Crosstalk ◽  
Phenotypic Responses ◽  
Ethylene Biosynthesis And Signaling

The auxin and ethylene pathways cooperatively regulate a variety of developmental processes in plants. Growth responses to ethylene are largely dependent on auxin, the key regulator of plant morphogenesis. Auxin, in turn, is capable of inducing ethylene biosynthesis and signaling, making the interaction of these hormones reciprocal. Recent studies discovered a number of molecular events underlying auxin-ethylene crosstalk. In this review, we summarize the results of fine-scale and large-scale experiments on the interactions between the auxin and ethylene pathways in Arabidopsis. We integrate knowledge on molecular crosstalk events, their tissue specificity, and associated phenotypic responses to decipher the crosstalk mechanisms at a systems level. We also discuss the prospects of applying systems biology approaches to study the mechanisms of crosstalk between plant hormones.

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