Temperature modulates epidermal cell size in Drosophila melanogaster
Temperature modulates epidermal cell size in Drosophila melanogaster
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DOI：
10.1016/s0022-1910(01)00168-8
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发表时间：
2002-02-01
影响因子：
2.2
通讯作者：
Partridge, L
中科院分区：
文献类型：
--
作者：
Azevedo, RBR;French, V;Partridge, L
大多数变温动物在较低的温度下饲养时，成熟时的体型会增加。原则上。温度可以通过影响表皮细胞的生长、增殖和/或死亡来产生这种结果。本文研究了不同饲养温度对果蝇翅叶、腿基底和眼角膜细胞大小和数量的影响。我们发现，在这两个菌株中，在两性中，饲养温度的降低通过影响表皮细胞大小增加了翅膀、腿和眼睛的大小，而细胞数量没有明显变化。我们的研究结果表明，温度对果蝇表皮的细胞大小有一致的影响，这也可能适用于其他类型的细胞。相比之下，温度对不同器官的进化影响并不一致。我们在果蝇生长控制的背景下讨论我们的发现。(C) 2002 Elsevier Science Ltd.版权所有。
Most ectotherms show increased body size at maturity when reared under colder temperatures. In principle. temperature could produce this outcome by influencing growth, proliferation and/or death of epidermal cells. Here we investigated the effects of rearing temperature on the cell size and cell number in the wing blade, the basitarsus of the leg and the cornea of the eye of Drosophila melanogaster from two populations at opposite ends of a South American latitudinal cline. We found that, in both strains of D. melanogaster and in both sexes, a decrease in rearing temperature increases the size of the wings, legs and eyes through an effect on epidermal cell size, with no significant change in cell number. Our results indicate that temperature has a consistent effect on cell size in the Drosophila epidermis and this may also apply to other cell types. In contrast, the evolutionary effects of temperature on the different organs are not consistent. We discuss our findings in the context of growth control in Drosophila. (C) 2002 Elsevier Science Ltd. All rights reserved.