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  • morphology
  • Surprisingly, we find thousands of age-dependent expression changes, even when there is little change in meristem morphology. (pnas.org)
  • To distinguish between these factors, we have compared the vegetative morphology of plants highly expressing the floral repressor FLC ( FRI;FLC ) with plants mutant for this gene ( FRI;flc-3 ) under both photoinductive (long day, LD and night interruption, NI) and non-photoinductive (short day, SD) conditions. (biologists.org)
  • differentiate
  • Unlike most examples of stem cells in animals, where the potency of the differentiating daughter is restricted, cells produced by plant meristems have the capacity to differentiate as any cell type. (iastate.edu)
  • In woody plants, these transitions can be separated by years, but in herbaceous species they are often very close together, making it difficult to differentiate the effects of vegetative phase change and floral induction on vegetative development. (biologists.org)
  • plants
  • The leaves of the vegetative rosette are often slightly smaller and darker green in aim1 plants, but the differences in phenotype at this stage are insufficient to score aim1 plants unambiguously in segregating populations. (plantcell.org)
  • The difference in vegetative development between wild-type Ws ( Figure 1A ) and aim1 ( Figure 1B ) plants can be enhanced by growing them under short-day conditions (8 to 12 hr of daylight). (plantcell.org)
  • The alternation between meristem termination and renewal in sympodial plants provides the foundation for a wide range of inflorescence types showing extensive variation in branch and flower number ( 5 , 6 ), but the basis for sympodial growth and branching diversity is poorly understood. (pnas.org)
  • In plants that normally produce a relatively fixed number of nodes, if the meristem is removed and allowed to reform a plant in culture, the plant will have the normal number of nodes. (iastate.edu)
  • In addition, the use of engineered male sterile plants would be especially useful to produce environmentally friendly transgenic plants carrying new traits by preventing gene flow between the genetically modified ornamentals and related plant species. (biomedcentral.com)
  • The vegetative-propagated bedding plants from the two groups Pelargonium zonale (syn. (biomedcentral.com)
  • These plants have been bred to produce a variety of flower shapes, ranging from star-shaped to funnel-shaped, and colors, such as white, pink, red, orange-red, fuchsia or deep purple. (biomedcentral.com)
  • Sexual reproduction Development of new plants by the processes of meiosis and fertilization in the flower to produce a viable embryo in a seed. (yumpu.com)
  • The epidermis of plants is made up of a single sheet of cells derived from the L1 of meristems. (plantcell.org)
  • Regulation
  • This shows that tomatoes, with their day-neutral flowering, easily accessible meristems, and balance of florigen and anti-florigens, have plenty to teach us about the regulation of flowering. (plantae.org)
  • repetitive
  • In addition, sequencing errors may produce false repetitive regions and uneven sequencing depth leads some sequence regions to have too few or too many reads. (jove.com)
  • The activity of vegetative meristems is repetitive , often described as iterative or meristic (from mer meaning unit as in poly mer ). (iastate.edu)
  • Surprisingly
  • Our systems genetics approach reveals that the program for inflorescence branching is initiated surprisingly early during meristem maturation and that evolutionary diversity in inflorescence architecture is modulated by heterochronic shifts in the acquisition of floral fate. (pnas.org)
  • Mutations
  • Most cultivated tomatoes produce inflorescences with a few flowers arranged in a zigzag branching pattern ( Fig. 1 A - E ), but we previously showed that variants with highly branched inflorescences bearing hundreds of flowers arose more than a century ago due to loss-of-function mutations in a homeobox transcription factor encoded by the COMPOUND INFLORESCENCE ( S ) gene ( Fig. 1 G ) ( 10 ). (pnas.org)
  • form
  • Each rRNA gene can be transcribed within the nucleolus by RNA polymerase I to produce a primary transcript that is processed to form the 18S, 5.8S, and 25-27S rRNAs (the size depends on species). (pnas.org)
  • At sexual maturity, this form, called the sporophyte , produces an offspring ( gametophyte ) with cells containing only one set of genetic instructions ( haploid ). (academic.ru)