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  • DEFECTIVE
  • Because of their abnormal structure, many of these defective embryo sacs give rise to abnormal seeds, which allowed the identification of the ig1-O reference allele ( Figure 1B ). (plantcell.org)
  • INFLORESCENCE
  • Variability in the number and organization of sympodial branches produces a remarkable array of inflorescence architectures, but little is known about the mechanisms underlying sympodial growth and branching diversity. (pnas.org)
  • SAMs first give rise to leaves before transitioning to inflorescence meristems (IM), which can produce lateral (axillary) meristems that either transition into flower-bearing shoots or differentiate directly into flowers ( 1 - 3 ). (pnas.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)
  • Plants in the nightshade (Solanaceae) family ( 7 ), particularly tomato ( Solanum lycopersicum ), are models for sympodial growth, and inflorescence architectures range from a solitary flower, as in petunia ( 8 ), to progressively more complex structures in which the meristem proliferates into multiple branches with dozens of flowers, as in several wild species of tomato ( 9 ). (pnas.org)
  • 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)
  • Instead, the transition of inflorescence to floral meristem appears to be a developmental stage when silenced genes can be derepressed. (pnas.org)
  • somatic
  • To explore poorly understood differences between primary and subsequent somatic embryogenic lines of plants, we induced secondary (2 ry ) and tertiary (3 ry ) lines from cotyledonary somatic embryos (SEs) of two Douglas-fir genotypes: SD4 and TD17. (springer.com)
  • amp1
  • Here we show that MP patterning activity is largely dispensable when the presumptive carboxypeptidase ALTERED MERISTEM PROGRAM 1 ( AMP1 ) is not functional, indicating that MP is primarily necessary to counteract AMP1 activity. (biologists.org)
  • Despite a wealth of phenotypic data, AMP1 function has not been genetically linked to other genes in embryo or meristem patterning. (biologists.org)
  • embryogenesis
  • To study how morphogenetic events are temporally coordinated during embryogenesis, we screened for mutations of A. thaliana that mimicked the cotyledon-leaf phenotype of precociously germinated Brassica napus embryos ( 7 , 8 ). (pnas.org)
  • transcriptional
  • AGL15 (for AGAMOUS-Like 15) is a member of the MADS domain family of DNA binding transcriptional regulators that accumulates to its highest amounts during embryo development. (plantcell.org)
  • plants
  • 1. A Zea mays (L.) cell line which is auxin-autotrophic and from which protoplasts, which can reproducibly and stably regenerate into fertile plants, can be produced. (google.com)
  • Still further provided by the invention are methods for producing cotton plants by crossing the cotton variety 04T048 with itself or another cotton variety and plants produced by such methods. (google.com)
  • e) repeating steps (c) and (d) one or more times in succession to produce selected second or higher backcross progeny plants that comprise the single locus and otherwise comprise all of the physiological and morphological characteristics of cotton variety 04T048 when grown in the same environmental conditions. (google.com)