Flowering time is strictly controlled by a combination of internal and external signals that match seed set with favorable environmental conditions. In the model plant species Arabidopsis thaliana (Brassicaceae), many of the genes underlying development and evolution of flowering have been discovered. However, much remains unknown about how conserved the flowering gene networks are in plants wi...

Plants requiring an insect pollinator often produce nectar as a reward for the pollinator's visitations. This rich secretion needs mechanisms to inhibit microbial growth. In Nicotiana spp. nectar, anti-microbial activity is due to the production of hydrogen peroxide. In a close relative, Petunia hybrida, limited production of hydrogen peroxide was found; yet petunia nectar still has anti-bacter...

A recall campaign for commercial, orange flowering petunia varieties in spring 2017 caused economic losses worldwide. The orange varieties were identified as undeclared genetically engineered (GE)-plants, harboring a maize dihydroflavonol 4-reductase (DFR, A1), which was used in former scientific transgenic breeding attempts to enable formation of orange pelargonidin derivatives from the precur...

In January 2012, spreading type petunia cv. Wave Pink plants showing an abnormal growth habit of sprouting unusual multiple plantlets from the lateral buds were collected from a greenhouse in Gwacheon, Gyeonggi Province, Korea. The presence of phytoplasma was investigated using PCR with the primer pairs P1/P6, and R16F1/R1 for nested-PCR. In the nested PCR, 1,096 bp PCR products were obtained, ...

A procedure is developed for the isolation of intact chloroplast DNA (ctDNA) from Petunia hybrida. The molecular weight, calculated from contour length measurements, is 96.0 +/- 4.5 x 10(6) daltons. This value is in good agreement with the value of 101.2 x 10(6) daltons that was estimated from the electrophoretic mobilities of restriction endonuclease fragments of ctDNA. Analysis of petunia ctD...

A procedure to identify dihydroflavonol (glucosides), cinnamic acids and anthocyanins in flowers of Petunia hybrida is presented. Nearly all known intermediates and anthocyanins ocurring in Petunia are separated on one column using different elution systems. Hydrolysis of extracts before HPLC and thin layer chromatography is in some cases necessary to make positive identification of flavonoids....

Research into molecular mechanisms of self-incompatibility (SI) in plants can be observed representatives various families, including Solanaceae. Earlier studies the S-RNase-based SI petunia (Petunia hybrida E. Vilm.) demonstrate that programmed cell death (PCD) is an factor. These suggest phytohormon cytokinin (CK) putative activator caspase-like proteases (CLPs). In this work, data confirming...

Abstract The Neotropical region holds high plant species richness, and these originated under the influence of climate changes, tectonic processes ecological factors. Several genera Solanaceae have appeared diversified quickly in area, producing a number lineages. Petunia is endemic to grasslands southern South America constitutes one young groups. From this perspective, I aim identify driving ...

In many flowering plants, such as petunia (Petunia x hybrida), ethylene produced in floral organs after pollination elicits a series of physiological and biochemical events, ultimately leading to senescence of petals and successful fertilization. Here, we demonstrate, using transgenic ethylene insensitive (44568) and Mitchell Diploid petunias, that multiple components of emission of volatile or...

Two cDNAs (PhERS1 and PhETR2) encoding ethylene receptor homologues were cloned and characterized from petunia. Genomic Southern blot analysis revealed that small families of PhERS1-related and PhETR2-related genes exist in petunia. PhERS1 and PhETR2 are constitutively expressed in stem, flower bud, flower, and roots, with a very low level in leaves. High levels of both PhERS1 and PhETR2 transc...