منابع مشابه
Control of Organ Size in Plants
The size of plant organs, such as leaves and flowers, is determined by an interaction of genotype and environmental influences. Organ growth occurs through the two successive processes of cell proliferation followed by cell expansion. A number of genes influencing either or both of these processes and thus contributing to the control of final organ size have been identified in the last decade. ...
متن کاملCompensation: a key to clarifying the organ-level regulation of lateral organ size in plants.
Leaves are ideal model systems to study the organ size regulation of multicellular plants. Leaf cell number and cell size are determinant factors of leaf size which is controlled through cell proliferation and post-mitotic cell expansion, respectively. To achieve a proper leaf size, cell proliferation and post-mitotic cell expansion should be co-ordinated during leaf morphogenesis. Compensation...
متن کاملOrgan Size Regulation in Plants: Insights from Compensation
The regulation of organ size in higher organisms is a fundamental issue in developmental biology. In flowering plants, a phenomenon called "compensation" has been observed where a cell proliferation defect in developing leaf primordia triggers excessive cell expansion. As a result, final leaf size is not significantly reduced compared to that expected from the reduction in leaf cell numbers. Re...
متن کاملControl of seed size in plants.
R eproductive success in seed plants depends on a healthy seed set. The viability of the embryo is enhanced if a seed contains substantial reserves of starch and protein to nourish the seedling when it germinates months or years later in uncertain conditions. Increased reserves will generally result in an increased seed size, but large seeds are less efficiently dispersed, unless there is human...
متن کاملMaternal control of seed size in plants.
Seed size is a key determinant of evolutionary fitness, and is also one of the most important components of seed yield. In angiosperms, seed development begins with double fertilization, which leads to the formation of a diploid embryo and a triploid endosperm. The outermost layer of the seed is the seed coat, which differentiates from maternal integuments. Therefore, the size of a seed is dete...
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ژورنال
عنوان ژورنال: Genome Biology
سال: 2008
ISSN: 1465-6906
DOI: 10.1186/gb-2008-9-7-226