pyrus communis/nikotiin

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Expression of flowering locus T2 transgene from Pyrus communis L. delays dormancy and leaf senescence in Malus×domestica Borkh, and causes early flowering in tobacco.

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Logi sisse

Annual and perennial plants represent two different evolutionary strategies based on differential synchronization of their reproductive development. The mobile signal protein FLOWERING LOCUS T (FT) plays a central role in mediating the onset of reproduction in both plant types. Two novel FT-like

Arabinogalactan-proteins from Nicotiana alata and Pyrus communis contain glycosylphosphatidylinositol membrane anchors.

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Logi sisse

Arabinogalactan-proteins (AGPs) are a class of proteoglycans found in cell secretions and plasma membranes of plants. Attention is currently focused on their structure and their potential role in growth and development. We present evidence that two members of a major class of AGPs, the classical

Activation of three pathogen-inducible promoters of tobacco in transgenic pear (Pyrus communis L.) after abiotic and biotic elicitation.

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Logi sisse

In order to improve pear resistance against fire blight caused by Erwinia amylovora, a search for promoters driving high-level expression of transgenes specifically in response to this bacterial pathogen has been undertaken. We have examined the ability of hsr203J, str246C and sgd24 tobacco

Molecular cloning of cDNAs encoding the protein backbones of arabinogalactan-proteins from the filtrate of suspension-cultured cells of Pyrus communis and Nicotiana alata.

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This paper reports the isolation of cDNAs encoding the protein backbone of two arabinogalactan-proteins (AGPs), one from pear cell suspension cultures (AGPPc2) and the other from suspension cultures of Nicotiana alata (AGPNa2). The proteins encoded by these cDNAs are quite different from the

Structure of the glycosylphosphatidylinositol anchor of an arabinogalactan protein from Pyrus communis suspension-cultured cells.

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Logi sisse

Arabinogalactan proteins (AGPs) are proteoglycans of higher plants, which are implicated in growth and development. We recently have shown that two AGPs, NaAGP1 (from Nicotiana alata styles) and PcAGP1 (from Pyrus communis cell suspension culture), are modified by the addition of a

Deletion in the Promoter of PcPIN-L Affects the Polar Auxin Transport in Dwarf Pear (Pyrus communis L.).

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Logi sisse

Dwarf cultivars or dwarfing rootstocks enable high-density planting and are therefore highly desirable in modern pear production. Previously, we found that the dwarf growth habit of pear is controlled by a single dominant gene PcDw. In this study, PcPIN-L (PCP021016) was cloned from dwarf-type and

First Report of Fire Blight Caused by Erwinia amylovora on Pear, Apple, and Quince in Morocco.

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Logi sisse

In the spring of 2006, symptoms similar to those of fire blight were observed on pear (Pyrus communis), apple (Malus pumila), and quince (Cydonia oblonga) trees at the flowering and early fruit set stages in an orchard in the Meknès Region, 140 km east of Rabat. Symptoms consisted of i) water-soaked

First Report of Erwinia amylovora on Crataegus monogyna and Pyrus pyraster in Bulgaria.

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Logi sisse

Typical symptoms of fire blight, caused by Erwinia amylovora, were observed in late June of 1998 on Crataegus monogyna Jacq. (hawthorn) and Pyrus pyraster Burgsd. (syn. P. caucasia, wild or thorny pear) in the region of Plovdiv. Symptoms observed on hawthorn were shepherd's-crook shoots, necrotic

Post-translational modifications of arabinogalactan-peptides of Arabidopsis thaliana. Endoplasmic reticulum and glycosylphosphatidylinositol-anchor signal cleavage sites and hydroxylation of proline.

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Logi sisse

We have developed a method for separating the deglycosylated protein/peptide backbones of the small arabinogalactan (AG)-peptides from the larger classical arabinogalactan-proteins (AGPs). AGPs are an important class of plant proteoglycans implicated in plant growth and development. Separation of

Comparative analysis of chloroplast DNA in Pyrus species: physical map and gene localization.

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Logi sisse

A physical map of chloroplast DNA (cpDNA) of pear [Pyrus ussuriensis var. hondoensis (Nakai et Kikuchi) Rehder] was constructed using five restriction enzymes, SalI, XhoI, BamHI, SacI and PstI. This information will make it possible to investigate the phylogenetic relationships between Pyrus

First Report of Fire Blight Caused by Erwinia amylovora on Pear in Tunisia.

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Logi sisse

In the spring of 2012 and 2013, symptoms similar to those of fire blight were observed on pear trees (Pyrus communis cv. Alexandrine, Williams) in Tunisia at flowering stages. Disease symptoms appeared in 2012 in the region of Mornag and in the following year extended to the regions of Manouba and

Evidence for the involvement of an oxidative stress in the initiation of infection of pear by Erwinia amylovora.

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Logi sisse

Involvement of an oxidative burst, usually related to incompatible plant/pathogen interactions leading to hypersensitive reactions, was investigated with Erwinia amylovora, the causal agent of fire blight of Maloideae subfamily of Rosaceae, in interaction with pear (Pyrus communis; compatible

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