03013nas a2200433 4500008004100000022001400041245016000055210006900215260001300284300001200297490000700309520160000316653001601916653003801932653001501970653001701985653001902002653002702021653001502048653002602063653002602089653001002115100002402125700002402149700001902173700002002192700002202212700002102234700002202255700002902277700002002306700001802326700002002344700002402364700001902388700002102407700001902428856013202447 2017 eng d a1573-502800aIntegration of transcriptomic and metabolic data reveals hub transcription factors involved in drought stress response in sunflower (Helianthus annuus L.).0 aIntegration of transcriptomic and metabolic data reveals hub tra c2017 Jul a549-5640 v943 a
By integration of transcriptional and metabolic profiles we identified pathways and hubs transcription factors regulated during drought conditions in sunflower, useful for applications in molecular and/or biotechnological breeding. Drought is one of the most important environmental stresses that effects crop productivity in many agricultural regions. Sunflower is tolerant to drought conditions but the mechanisms involved in this tolerance remain unclear at the molecular level. The aim of this study was to characterize and integrate transcriptional and metabolic pathways related to drought stress in sunflower plants, by using a system biology approach. Our results showed a delay in plant senescence with an increase in the expression level of photosynthesis related genes as well as higher levels of sugars, osmoprotectant amino acids and ionic nutrients under drought conditions. In addition, we identified transcription factors that were upregulated during drought conditions and that may act as hubs in the transcriptional network. Many of these transcription factors belong to families implicated in the drought response in model species. The integration of transcriptomic and metabolomic data in this study, together with physiological measurements, has improved our understanding of the biological responses during droughts and contributes to elucidate the molecular mechanisms involved under this environmental condition. These findings will provide useful biotechnological tools to improve stress tolerance while maintaining crop yield under restricted water availability.
10aChlorophyll10aGene Expression Regulation, Plant10aHelianthus10aPlant Leaves10aPlant Proteins10aProtein Array Analysis10aRNA, Plant10aStress, Physiological10aTranscription Factors10aWater1 aMoschen, Sebastián1 aDi Rienzo, Julio, A1 aHiggins, Janet1 aTohge, Takayuki1 aWatanabe, Mutsumi1 aGonzalez, Sergio1 aRivarola, Máximo1 aGarcia-Garcia, Francisco1 aDopazo, Joaquin1 aHopp, Esteban1 aHoefgen, Rainer1 aFernie, Alisdair, R1 aPaniego, Norma1 aFernandez, Paula1 aHeinz, Ruth, A uhttps://www.clinbioinfosspa.es/content/integration-transcriptomic-and-metabolic-data-reveals-hub-transcription-factors-involved03254nas a2200493 4500008004100000022001400041245010800055210006900163260001300232300001100245490000700256520165600263653004101919653003001960653003801990653001802028653001702046653001502063653000902078653001702087653004402104653001702148653003302165653001902198653002602217100002402243700002602267700002402293700002802317700002002345700002202365700002102387700002102408700002202429700002902451700002002480700002702500700002002527700002402547700001902571700002102590700001902611856013002630 2016 eng d a1467-765200aIntegrating transcriptomic and metabolomic analysis to understand natural leaf senescence in sunflower.0 aIntegrating transcriptomic and metabolomic analysis to understan c2016 Feb a719-340 v143 aLeaf senescence is a complex process, which has dramatic consequences on crop yield. In sunflower, gap between potential and actual yields reveals the economic impact of senescence. Indeed, sunflower plants are incapable of maintaining their green leaf area over sustained periods. This study characterizes the leaf senescence process in sunflower through a systems biology approach integrating transcriptomic and metabolomic analyses: plants being grown under both glasshouse and field conditions. Our results revealed a correspondence between profile changes detected at the molecular, biochemical and physiological level throughout the progression of leaf senescence measured at different plant developmental stages. Early metabolic changes were detected prior to anthesis and before the onset of the first senescence symptoms, with more pronounced changes observed when physiological and molecular variables were assessed under field conditions. During leaf development, photosynthetic activity and cell growth processes decreased, whereas sucrose, fatty acid, nucleotide and amino acid metabolisms increased. Pathways related to nutrient recycling processes were also up-regulated. Members of the NAC, AP2-EREBP, HB, bZIP and MYB transcription factor families showed high expression levels, and their expression level was highly correlated, suggesting their involvement in sunflower senescence. The results of this study thus contribute to the elucidation of the molecular mechanisms involved in the onset and progression of leaf senescence in sunflower leaves as well as to the identification of candidate genes involved in this process.
10aGas Chromatography-Mass Spectrometry10aGene Expression Profiling10aGene Expression Regulation, Plant10aGene ontology10aGenes, Plant10aHelianthus10aIons10ametabolomics10aOligonucleotide Array Sequence Analysis10aPlant Leaves10aPrincipal Component Analysis10aRNA, Messenger10aTranscription Factors1 aMoschen, Sebastián1 aLuoni, Sofía, Bengoa1 aDi Rienzo, Julio, A1 aCaro, María, Del Pilar1 aTohge, Takayuki1 aWatanabe, Mutsumi1 aHollmann, Julien1 aGonzalez, Sergio1 aRivarola, Máximo1 aGarcia-Garcia, Francisco1 aDopazo, Joaquin1 aHopp, Horacio, Esteban1 aHoefgen, Rainer1 aFernie, Alisdair, R1 aPaniego, Norma1 aFernandez, Paula1 aHeinz, Ruth, A uhttps://www.clinbioinfosspa.es/content/integrating-transcriptomic-and-metabolomic-analysis-understand-natural-leaf-senescence