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  1. Novel type II cell wall architecture in dichlobenil-habituated maize calluses.

    Planta 229(3):617 (2009) PMID 19048286

    Growth of maize (Zea mays L.) callus-culture cells was inhibited using dichlobenil (2,6 dichlorobenzonitrile, DCB) concentrations > or =1 microM; I (50) value for the effect on inhibited fresh weight gain was 1.5 microM. By increasing the DCB concentration in the culture medium, DCB-habituated c...
  2. Galactose metabolism in cell walls of opening and senescing petunia petals.

    Planta 229(3):709 (2009) PMID 19082620

    Galactose was the major non-cellulosic neutral sugar present in the cell walls of 'Mitchell' petunia (Petunia axillaris x P. axillaris x P. hybrida) flower petals. Over the 24 h period associated with flower opening, there was a doubling of the galactose content of polymers strongly associated w...
  3. A novel role of BELL1-like homeobox genes, PENNYWISE and POUND-FOOLISH, in floral patterning.

    Planta 229(3):693 (2009) PMID 19082619

    Flowers are determinate shoots comprised of perianth and reproductive organs displayed in a whorled phyllotactic pattern. Floral organ identity genes display region-specific expression patterns in the developing flower. In Arabidopsis, floral organ identity genes are activated by LEAFY (LFY), wh...
  4. Remodelling of arabinoxylan in wheat (Triticum aestivum) endosperm cell walls during grain filling.

    Planta 229(3):667 (2009) PMID 19066942

    Previous studies using spectroscopic imaging have allowed the spatial distribution of structural components in wheat endosperm cell walls to be determined. FT-IR microspectroscopy showed differing changes in arabinoxylan (AX) structure, during grain development under cool/wet and hot/dry growing...
  5. Botryticides affect grapevine leaf photosynthesis without inducing defense mechanisms.

    Planta 229(3):497 (2009) PMID 19002490

    The effects of the two botryticides, fludioxonil (fdx) and fenhexamid (fhd), were investigated on grapevine leaves (Vitis vinifera L. cv. Pinot noir) following photosynthesis and defense mechanisms. Treatments were carried out in vineyard at the end of flowering. Phytotoxicity of both fungicides...
  6. Identification of OsbZIP72 as a positive regulator of ABA response and drought tolerance in rice.

    Planta 229(3):605 (2009) PMID 19048288

    Abscisic Acid (ABA) is an important phytohormone involved in abiotic stress resistance in plants. A group of bZIP transcription factors play important roles in the ABA signaling pathway in Arabidopsis. However, little is known about the function of their orthologs in rice, where they may hold a ...
  7. Reproductive organs regulate leaf nitrogen metabolism mediated by cytokinin signal.

    Planta 229(3):633 (2009) PMID 19048287

    The metabolism of vegetative organs in plants changes during the development of the reproductive organs. The regulation of this metabolism is important in the control of crop productivity. However, the complexity of the regulatory systems makes it difficult to elucidate their mechanisms. To exam...
  8. A novel type III polyketide synthase encoded by a three-intron gene from Polygonum cuspidatum.

    Planta 229(3):457 (2009) PMID 18998157

    A type III polyketide synthase cDNA and the corresponding gene (PcPKS2) were cloned from Polygonum cuspidatum Sieb. et Zucc. Sequencing results showed that the ORF of PcPKS2 was interrupted by three introns, which was an unexpected finding because all type III PKS genes studied so far contained ...
  9. Rapid alterations of gene expression and cytosine methylation in newly synthesized Brassica napus allopolyploids.

    Planta 229(3):471 (2009) PMID 18998158

    Allopolyploidy is an important speciation mechanism and is ubiquitous among plants. Brassica napus is a model system for studying the consequences of hybridization and polyploidization on allopolyploid genome. In this research, two sets of plant materials were used to investigate the transcripto...
  10. Role of AUX1 in the control of organ identity during in vitro organogenesis and in mediating tissue specific auxin and cytokinin interaction in Arabidopsis.

    Planta 229(3):645 (2009) PMID 19052775

    Classic plant tissue culture experiments have shown that exposure of cell culture to a high auxin to cytokinin ratio promotes root formation and a low auxin to cytokinin ratio leads to shoot regeneration. It has been widely accepted that auxin and cytokinin play an antagonistic role in the contr...