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A [beta]-glucuronidase (GUS) gene that is under the control of the anther-specific LAT52 promoter of tomato (Lycopersicon esculentum) and the nopaline synthetase polyadenylation terminator was successfully expressed in pollen of Lilium longiflorum, Nicotiana tabacum, Nicotiana rustica, and Paeonia
The Lilium longiflorum gH2A promoter is active exclusively in the generative cells of mature pollen in transgenic tobacco expressing the gH2A promoter::GUS (β-glucuronidase) construct as a reporter gene. Temporal and spatial aspects of gH2A promoter activity examined during pollen development in
The presence and localization of actin and myosin have been examined in pollen tubes of Lilium longiflorum and Nicotiana alata. Immunoblot analysis of pollen tube extracts with antibodies to actin, myosins IA and IB, myosin II, and myosin V reveals the presence of these contractile proteins.
We previously identified a 175 kDa polypeptide in Lilium longiflorum germinating pollen using a monoclonal antibody raised against myosin II heavy chain from Physarum polycephalum. In the present study, the equivalent polypeptide was also found in cultured tobacco BY-2 cells. Analysis of the amino
Fertilization in plants relies on fast growth of pollen tubes through the style tissue toward the ovules. This polarized growth depends on influx of ions and water to increase the tube's volume. K(+) inward rectifying channels were detected in many pollen species, with one identified in Arabidopsis.
We have identified a family of repetitive sequences in the genome of Nicotiana alata named Tna1 (Transposon of N. alata). The first element we characterised was a genomic clone for the N. alata s6-ribonuclease (S6-RNase), a gene required for self-incompatibility in this species. The DNA sequence of
Homogeneous populations of developing microspores and pollen from anthers of lily (Lilium longiflorum Thumb.) and tobacco (Nicotiana tabacum L.) show a continuous production of biomass, reaching a maximum in young pollen. The rate of RNA synthesis was 460 fg · h(-1) in young binucleate cells, 138 fg
Eukaryotic translation elongation factors are implicated in protein synthesis across different living organisms, but their biological functions in the pathogenesis of cucumber mosaic virus (CMV) and tobacco rattle virus (TRV) infections are poorly understood. Here, we isolated and characterized a
As part of our research to develop an alternative system for the transformation of recalcitrant plant species we investigated the use of the male gametophyte as a transformation vector. Therefore the activity of four different promoters (CaMV 35S, LAT52, chiA PA2 and TR2') was analyzed in pollen of
NACs are one of the largest transcription factor families in plants and are involved in the response to abiotic stress. A new stress-responsive NAC transcription factor gene, LpNAC13, was isolated from Lilium pumilum bulbs. The expression of LpNAC13 was induced by drought, salt, cold and ABA
Cucumber mosaic virus (CMV) is a highly prevalent viral pathogen causing substantial damage to the bulb and cut-flower production of Lilium spp. Here, we performed an Illumina RNA sequencing (RNA-Seq) study on the leaf tissues of a virus-resistant species Lilium regale inoculated with mock control
The Formosa lily (Lilium formosanum) is one of the most common horticultural species in Taiwan. To explore gene regulation involved in this species, we used transcriptome analysis to generate PH-FB (mixed floral buds) and PH-LF (mature leaves) datasets. Combination of the PH-FB and PH-LF constructed
Cadmium had a highly toxic effect on pollen germination and tube growth, which were greatly inhibited as metal concentrations increased. Cadmium concentrations up to 10(-2) M completely stopped pollen germination and pollen showed an increasing tendency to burst within 1 h. At low concentrations,
Lily, a famous cut flower with highly fragrance, has high ornamental and economic values. Monoterpenes are the main components contributing to its fragrance, and terpene synthase (TPS) genes play critical roles in the biosynthesis of monoterpenoids. To understand the function of TPS and to explore
Lilium, the famous and significant cut flower, emits a variety of volatile organic compounds, which mainly contain monoterpenes, such as myrcene, (E)-β-ocimene, and linalool. To understand the molecular mechanism of monoterpene synthesis in Lilium, we cloned two potential genes in the