کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2824727 | 1161850 | 2015 | 9 صفحه PDF | دانلود رایگان |
• The large cells that are necessary in plant and animal organs usually are generated by increased ploidy.
• A large cell has multiple advantages versus a comparable mass of diploid cells.
• Cell hypertrophy via increased ploidy can produce an envelope or control organ shape.
• Polyploidy is linked to cell differentiation and function.
Defining how organ size is regulated, a process controlled not only by the number of cells but also by the size of the cells, is a frontier in developmental biology. Large cells are produced by increasing DNA content or ploidy, a developmental strategy employed throughout the plant and animal kingdoms. The widespread use of polyploidy during cell differentiation makes it important to define how this hypertrophy contributes to organogenesis. I discuss here examples from a variety of animals and plants in which polyploidy controls organ size, the size and function of specific tissues within an organ, or the differentiated properties of cells. In addition, I highlight how polyploidy functions in wound healing and tissue regeneration.
Journal: - Volume 31, Issue 6, June 2015, Pages 307–315