• A larger vegetative shoot apical meristem (SAM) often produces more branching inflorescences. (nature.com)
  • During Arabidopsis embryo development, cotyledon primordia are generated at transition stage from precursor cells that are not derived from the embryonic shoot apical meristem (SAM). (biologists.com)
  • While the shoot apical meristem (SAM) formed in the embryo only contributes to the main stem, the branched structure observed in many plants relies on axillary meristems (AMs) formed post-embryonically. (researchgate.net)
  • In addition to reducing the size of both roots and lateral organs of the shoot, hst mutations affect the size of the shoot apical meristem, accelerate vegetative phase change, delay floral induction under short days, adaxialize leaves and carpels, disrupt the phyllotaxis of the inflorescence, and reduce fertility. (silverchair.com)
  • Only a few genes are necessary to confer floral meristem identity. (ens-lyon.fr)
  • LEAFY ( LFY ) and APETALA 1 ( AP1 ) are genes that ensure that primordia adopt a flower fate [ 2 ]. (ens-lyon.fr)
  • The jointless ( j ) mutant produces indeterminate inflorescences that revert to vegetative growth after the production of two or three flowers 16 , 17 . (nature.com)
  • The formation of new meristems is essential for the plastic expansion of the highly branched shoot and root systems. (researchgate.net)
  • LEAFY plant-specific transcription factors, which are key regulators of flower meristem identity and floral patterning, also contribute to meristem activity. (researchgate.net)
  • Plant aerial development relies on meristem activity which ensures main body plant axis development during plant life. (researchgate.net)
  • Key A 1 Plant a sporophyte, consisting of a stem, rhizome, corm, or crown producing well-developed leaves, more than 1 cell thick (except in Trichomanes and Hymenophyllum), generally reproducing by spores . (docslib.org)
  • In addition, FALSIFLORA ( FA ), the tomato ortholog LEAFY , controls flowering time and floral meristem identity. (nature.com)
  • The composite catalysts exhibit amphoteric properties, present broad-spectrum adsorption, and finally produce carbonates via cycloaddition of CO2 to epoxides. (bvsalud.org)
  • While the regulation of the stem cell population in an established meristem is well described, how it is initiated in newly formed meristems is less well underst. (researchgate.net)
  • AIL6 is expressed throughout stage one and two flower primordia, becoming primarily restricted to the floral meristem dome in stage three flowers with only low levels present in sepal primordia [ 1 ]. (biomedcentral.com)
  • The SAM is organized into three zones, namely a central zone (CZ) at the SAM summit in which cells divide slowly to replenish the SAM population, a slowly-dividing organizing center (OC) which lies below the CZ, and a peripheral zone (PZ) in which cells divide more rapidly and become allocated to presumptive organ primordia [ 1 ]. (biomedcentral.com)
  • The indeterminate state of cells within the meristem is also dependent on members of the KNOX gene family that are expressed in the SAM but excluded from incipient organ primordia [ 7 ]. (biomedcentral.com)
  • Cells at the periphery of the CZ begin to differentiate concomitant with the downregulation of KNOX genes and the expression of AINTEGUMENTA ( ANT ), regulating cell proliferation in the emerging organ primordia [ 8 , 9 ]. (biomedcentral.com)
  • SAM activity is also regulated by signals emanating from the organ primordia. (biomedcentral.com)
  • The highest number of well-developed shoots from meristems was obtained with 2 mg l-1 6-benzylaminopurine and 2 mg l-1 2,4-dichlorophenoxyacetic acid. (researchgate.net)
  • In a screen for new mutations affecting floral organ morphology and development, we have identified a novel allele of FIL, fil-9 and characterized its floral and meristem phenotypes. (biomedcentral.com)
  • Here, we show the role of FIL in reproductive meristem development and emphasize the potential of using fil mutants to study mersitem organization and the related effects on flower morphogenesis. (biomedcentral.com)
  • In flowers, AIL6 expression is associated with young flower primordium and early stages of floral organ development. (biomedcentral.com)
  • Loss of AIL6 function on its own has no obvious phenotype in the shoot and only results in a slightly shorter root and root apical meristem [ 3 , 4 ]. (biomedcentral.com)
  • Anatomical observations showed that it took 13 days for the differentiation of root primordia to the appearance of young adventitious roots in IBA treated cuttings, while it took 21 days to develop primordia in the control. (bvsalud.org)
  • The severity of both floral organs and meristem phenotypes is increased acropetally and in higher growth temperature. (biomedcentral.com)
  • Microalgae have been shown to be a highly suitable feedstock to produce biofuels, biofertilizers or even bioplastic. (upsc.se)