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Pollen of Petunia hybrida was germinated in artificial medium. At the beginning of the incubation, a large amount of proline, which comprises about half of the total free amino acid pool, was released into the medium. Part of this proline is reutilized by the pollen. Uptake of radioactive amino
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Petunias (Petunia hybrida cv. 'Mitchell') accumulate free proline (Pro) under drought-stress conditions. It is therefore believed that Pro acts as an osmoprotectant in plants subjected to drought conditions. Petuniaplants were transformed by Delta(1)-pyrroline-5-carboxylate synthetase genes (AtP5CS
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Transmitting tissue-specific proteins (TTS proteins) are abundant in the extracellular matrix of Nicotianapistils, and vital for optimal pollen tube growth and seed set. We have identified orthologs from several species in the Solanaceae, including Petuniaaxillaris axillaris
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The free amino acid contents in the anthers of male fertile, cytoplasmic male sterile (cms) and genic male sterile (gms) petunia lines were compared at different developmental stages of the male gametophyte. Quantitative differences in the amounts of free amino acids were found between the fertile
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Edible flowers have both great nutritional value and sensory appeal; however, their shelf-life is limited to a few days because they are highly perishable.<p>
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The impact of postharvest ethanol (ET) treatment and modified atmosphere packaging (MAP)
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A change of flower shape was observed in petunia corollas treated with 0.5 mM glyphosate. Glyphosate changed the flower symmetry from the actinomorphic type to the zygomorphic type. Corollas treated with glyphosate showed an increased free amino acid content. Free amino acid profiles in petunia
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Development of anthers in cytoplasmic male sterile (CMS) Petunia diverges from the normal sequence of events early in meiosis. Quantitative and qualitative changes in morphology, proteins and free amino acid contents correlate with this divergence. In anthers of the fertile line (5719), total
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Hydroxyproline-rich glycopeptides (HypSys peptides) are recently discovered 16-20-amino acid defense signals in tobacco and tomato leaves that are derived from cell wall-associated precursors. The peptides are powerful wound signals that activate the expression of defensive genes in tobacco and
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We investigated whether the presence of anthocyanins in plants could contribute to low pH stress tolerance using anthocyanin-enriched transgenic petunia lines (PM2, PM6, and PM8) expressing RsMYB1 and wild-type (WT) plants. We examined several physiological and biochemical factors and the transcript
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The response of plants to drought stress includes reduced transpiration as stomates close in response to increased abscisic acid (ABA) concentrations. Constitutive overexpression of 9-cis-epoxycarotenoid dioxygenase (NCED), a key enzyme in ABA biosynthesis, increases drought resistance, but causes
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