Search results for "plant physiology"

showing 10 items of 118 documents

Pflanzenfamilien

1841

PflanzensystematikAugu sistemātikaPflanzenfamilien:NATURAL SCIENCES::Biology::Organism biology::Systematics and phylogenetics [Research Subject Categories]Botānika:NATURAL SCIENCES::Biology::Organism biology::Plant physiology [Research Subject Categories]BotanikRokrakstu kolekcija
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Xyloglucan endotransglucosylase/hydrolases (XTHs) during tomato fruit growth and ripening

2009

Abstract: Depolymerization of cell watt xyloglucan has been proposed to be involved in tomato fruit softening, along with the xyloglucan modifying enzymes. Xyloglucan endo-transgtucosylase/hydrolases (XTHs: EC 2.4.1.207 and/or EC 3.2.1.151) have been proposed to have a dual role integrating newly secreted xyloglucan chains into an existing watt-bound xyloglucan, or restructuring the existing cell watt material by catalyzing transglucosylation between previously wall-bound xyloglucan molecules. Here, 10 tomato (Solanum lycopersicum) SIXTHs were studied and grouped into three phylogenetic groups to determine which members of each family were expressed during fruit growth and fruit ripening, a…

PhysiologyPlant ScienceCell wallchemistry.chemical_compoundSolanum lycopersicumGene Expression Regulation PlantHemicelluloseBiologyPhylogenybiologyReverse Transcriptase Polymerase Chain ReactionComputational BiologyGlycosyltransferasesfood and beveragesPlant physiologyRipeningEthylenesXyloglucan endotransglucosylasebiology.organism_classificationXyloglucanHorticulturechemistryBiochemistryFruitSolanumAgronomy and Crop ScienceSolanaceaeJournal of Plant Physiology
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Detection of a plant enzyme exhibiting chlorogenate-dependant caffeoyltransferase activity in methanolic extracts of arbuscular mycorrhizal tomato ro…

2012

When Glomus intraradices-colonised tomato roots were extracted in methanol at 6 degrees C, chlorogenic acid (5-caffeoylquinic acid), naturally present in the extract, was slowly converted by transesterification into methyl caffeate. The progress of the reaction could be monitored by HPLC. The reaction only occurred when the ground roots were left in contact with the hydro-alcoholic extract and required the presence of 15-35% water in the mixture. When the roots were extracted in ethanol, chlorogenic acid was transformed to ethyl caffeate in the same conditions. The reaction was also detected in Glomus mosseae-colonised tomato root extracts. It was also detectable in non-mycorrhizal root ext…

Physiology[SDV]Life Sciences [q-bio]Arbuscular mycorrhizal fungiPlant SciencePlant RootsSubstrate SpecificityACBIOSYNTHESISchemistry.chemical_compoundTRANSFERASESolanum lycopersicumMycorrhizaeMethyl caffeateSWEET-POTATO ROOTSFood scienceEnzyme InhibitorsGlomusChromatography High Pressure LiquidPlant ProteinsbiologyTemperaturePlant physiologyfood and beveragesChlorogenic acidBiochemistryFUNGUSCOFFEE[SDE]Environmental SciencesGENESMETABOLISMCaffeoyltransferaseTomatoCaffeic AcidsChlorogenic acidTransferasesGenetics[SDV.BV]Life Sciences [q-bio]/Vegetal BiologyEnzyme AssaysEthanolEsterificationPlant ExtractsfungiEthyl caffeatePlant Components Aerialbiology.organism_classificationRootsEnzyme assayEnzyme ActivationPhenylmethylsulfonyl FluorideTransesterificationchemistrybiology.proteinMethanolCAFFEIC ACIDCATALYZED SYNTHESIS
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Flora Livonica, oder: Abbildung und Beschreibung der in Livland wildwachsenden Pflanzen, bearbeitet in Verbindung mit einigen Freunden der vaterländi…

1809

Atsevišķas burtnīcas papildinātas ar precizējošām titullapām ar citu izdošanas gadu: 9. Heft (1810). Beschreibung und Abbildung der vorzüglichsten und nützlichsten wildwachsenden Futtergräser in Liefland, Ehstland und Kurland (1811); 10. Heft (1810). Beschreibung und Abbildung der vorzüglich-schädlichsten wildwachsenden Giftpflanzen in Liefland, Ehstland und Kurland (1811).

Plant geography - LivoniaFloraAugu ģeogrāfija - LivonijaBotānikaAugu ģeogrāfija - BaltijaPhytogeographie - Baltikum:NATURAL SCIENCES::Biology::Organism biology::Plant physiology [Research Subject Categories]Pflanzengeographie - LivlandPhytogeography - BalticsFitoģeogrāfija - Baltija
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Rododendru un to sakņu endofītisko sēņu mijiedarbības anatomiski fizioloģiskie aspekti un izmantošana rododendru pavairošanā

2019

Promocijas darba ietvaros no mūžzaļo rododendru šķirnes ‘Babītes Lavanda’ stādu saknēm izolētas endofītiskās sēnes un pētīta šo sēņu ietekme uz divu mūžzaļo rododendru šķirņu – ‘Babītes Lavanda’ un ‘Nova Zembla’ dzinumiem augu audu kultūrā, kā arī vienpumpura spraudeņu ar lapu apsakņošanos un in vitro inokulēto dzinumu apsakņošanos ex vitro apstākļos. Pētījumā analizēti rododendru un to endofītu mijiedarbību anatomiskie un fizioloģiskie aspekti. Pētījumā iegūta viena endofītiskā sēne, kas veicina adventīvo sakņu meristemoīdu attīstību in vitro apstākļos un adventīvo sakņu attīstību rododendru vienpumpura spraudeņiem ar lapu, kā arī palielina izdzīvojušo apsakņoto spraudeņu daudzumu ilgtermi…

Plant physiologyAugu fizioloģijaBioloģijaBiology
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Fizioloģiskais pamats parastās priedes (Pinus sylvestris) pavairošanai audu kultūrā

2008

Fizioloģiskais pamats parastās priedes (Pinus sylvestris) pavairošanai audu kultūrā Darba mērķis - veidot fizioloģisko pamatu pieaugušas parastās priedes Pinus sylvestris L. pavairošanai ar audu kultūru metodi. Piemērotākais laiks pieaugušu parasto priežu ievadīšanai kultūrā bija no jūlija līdz oktobra beigām. Fizioloģiskā miera stāvoklī esošu priežu pumpuru morfogēno kompetenci audu kultūrā varēja palielināt, pumpurus pirms ievadīšanas kultūrā uzglabājot pazeminātā temperatūrā. Pazemināta vai stabila oksidatīvo fermentu aktivitāte korelēja ar paaugstinātu audu morfogēno kompetenci in vitro. Priežu pumpuru kultivēšanai piemērotāka ir skāba iniciālā barotne. In vitro kultivētu pieaugušu prie…

Plant physiologyAugu fizioloģijaDzīvās dabas zinātnesBioloģijaBiology
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Rugosa grupas rožu hibrīdu bioloģiskā daudzveidība

2014

Darba anotācija Pētījuma „Rugosa grupas rožu hibrīdu bioloģiskā daudzveidība” gaitā ar DNS testu palīdzību ir pārbaudīta rugosa hibrīdu šķirņu un pamatsugas iedzimtība, kā arī novērtēta izturība pret Diplocarpon rosaea izraisīto tumšplankumainību, pētīta antiradikālā aktivitāte, pigmentu daudzums un gaistošo savienojumu saturs un sastāvs dažādās auga daļās. Par modeļiem izvēlētas Nacionālajā botāniskajā dārzā augušas Dr. agr. Dzidras Riekstas selekcionētās šķirnes un to vecākaugi. Rugosa hibrīdi satur plašu spektru bioloģiski aktīvu vielu, kas nosaka lapu un vainaglapu krāsu un smaržu, tiem piemīt spēcīga antiradikālo aktivitāti. Augļi ir bagāti ar karotinoīdiem un askorbīnskābi. Līdz šim R…

Plant physiologyAugu fizioloģijaDzīvās dabas zinātnesBioloģijaBiology
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Genera plantarum Livoniae indigenarum

1840

Plants - BalticsPlantis - LivoniaAugu sistemātikaBotanyBotānika:NATURAL SCIENCES::Biology::Organism biology::Plant physiology [Research Subject Categories]Augi - BaltijaFitoģeogrāfija - BaltijaRokrakstu kolekcija
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Proteomic profiling of German Dornfelder grape berries using data-independent acquisition

2017

Grapevine is one of the most important fruit plants throughout the world. Sequencing of the grape genome in 2007 enabled in-depth analyses of the grape proteome. Whereas many studies addressed changes in proteomic composition of grapes during ripening, we focused on the proteome of mature grape berries from Dornfelder, a characteristic red wine grape for Germany. Current data-independent acquisition proteomics technology enables the analysis of proteomic compositions in a degree of accuracy that was unreachable only a few years ago. Using a label-free proteomics approach, we quantified 712 proteins in mature Dornfelder grape berries, of which 650 could be annotated by the Blast2GO software.…

Proteomics0106 biological sciences0301 basic medicinePhysiologyProteomic Profilingfungifood and beveragesPlant physiologyRipeningPlant ScienceBiologyProteomics01 natural sciencesWine grape03 medical and health sciences030104 developmental biologyBiochemistryFruitProteomeGeneticsVitisSugarBlast2GOPlant Proteins010606 plant biology & botanyPlant Physiology and Biochemistry
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Activity and activation state of ribulose-1,5-bisphosphate carboxylase of spruce trees with varying degrees of damage relative to the occurrence of n…

1989

The aim was to determine whether a reduced carboxylation efficiency in needles of damaged spruce trees (Picea abies), is derived from a direct impairment of the ribulose-1,5-bisphosphate carboxylase (RuBP carboxylase) or there is an indirect inhibition of the RuBP carboxylase. In 1985, 1986 and 1987 measurements of RuBP carboxylase activity were carried out at three locations. Trees of different ages and degrees of damage were examined. RuBP carboxylase was assayed using both a rapid extraction method to determine the initial activity and an in vitro test after total activation to determine the total activity. The activation state was calculated as the ratio of initial activity to total act…

Ribulose 15-bisphosphatebiologyPlant physiologyInitial activityPicea abiesCell BiologyPlant ScienceGeneral Medicinebiology.organism_classificationBiochemistryPyruvate carboxylaseRuBP carboxylase activitychemistry.chemical_compoundchemistryCarboxylationBotanyExtraction methodsPhotosynthesis research
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