Geometric Model of a Growing Meristem Leaf initiation takes place in the peripheral zone of a growing shoot apical meristem and involves the patterning of cells
نویسنده
چکیده
Lines. All Arabidopsis thaliana lines were in the Columbia background. The pin1 mutant allele used was pin1-7. DR5::GFP refers to the DR5rev::GFP line (1), in which the DR5 promoter consists of nine repeats of the DR5 element (2), fused in inverse orientation to the minimal CaMV 35S promoter and the coding sequence of an endoplasmic-reticulumtargeted eGFP protein. This construct was kindly provided by J. Friml (Universität Tübingen, Tübingen, Germany) and crossed into the pin1-7 background.
منابع مشابه
THE EFFECTS OF SALT STRESS ON THE SHOOT APICAL MERISTEM AND LEAF GENIERATION IN SUNFLOWER (HELIANTNUS ANNUUS L.)
Sunflower (Helictnthur annuus L. cvs Mehr Shafagh) seedlings were grown in nutrient solutions containing 20.5 to 70.4 mM NaCl and 0 as the control. The effects of salinity on developmental changes occurring in the shoot apices of plants were studied. At 20.5 mM NaCI concentration, the leaf emergence rate and plastochron index of Shafagh increased significantly, but this phenomenon was not o...
متن کاملVFL, the grapevine FLORICAULA/LEAFY ortholog, is expressed in meristematic regions independently of their fate.
The flowering process in grapevine (Vitis vinifera) takes place in buds and extends for two consecutive growing seasons. To understand the genetic and molecular mechanisms underlying this process, we have characterized grapevine bud development, cloned the grapevine FLORICAULA/LEAFY (FLO/LFY) ortholog, VFL, and analyzed its expression patterns during vegetative and reproductive development. Flo...
متن کاملQUANTITATIVE AND QUALITATIVE CHANGES IN SHOOT APICAL MERISTEM OF SAFFRON CROCUS DURING THE PERIOD OF GROWTH AND DEVELOPMENT
متن کامل
Morphogenesis in Plants: Modeling the Shoot Apical Meristem, and Possible Applications
A key determinant of overall morphogenesis in flowering plants such as Arabidopsis thaliana is the shoot apical meristem (growing tip of a shoot). Gene regulan'on networks can be used to model this system. We exhibit a very preliminary two.dimensional model including gene regulation and intercellular signaling, but omitting cell division and dynamical geometry. The model can be trained to have ...
متن کاملShoot organization genes regulate shoot apical meristem organization and the pattern of leaf primordium initiation in rice.
The mechanism regulating the pattern of leaf initiation was analyzed by using shoot organization (sho) mutants derived from three loci (SHO1, SHO2, and SHO3). In the early vegetative phase, sho mutants show an increased rate of leaf production with random phyllotaxy. The resulting leaves are malformed, threadlike, or short and narrow. Their shoot apical meristems are relatively low and wide, th...
متن کامل