Heifetz Y, Tram U, Wolfner M F
Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853-2703, USA.
Proc Biol Sci. 2001 Jan 22;268(1463):175-80. doi: 10.1098/rspb.2000.1347.
Drosophila melanogatser seminal fluid components, accessory gland proteins (Acps) and sperm, induce females to deposit high numbers of fertilized eggs for about 11 days. This high and sustained level of egg deposition requires that oogenesis be stimulated to provide the necessary mature oocytes. To investigate the relative timing and contributions of Acps and sperm in the egg-production process, we examined the rates of oogenic progression and egg deposition in females mated to genetically altered males that have seminal fluid deficient in Acps and/or sperm, and subjected these data to path analysis. We found that Acps and sperm are complementary stimuli necessary for inducing high rates of oogenic progression and rapid egg deposition. While egg deposition and oogenic progression can be induced by Acps alone, both Acps and sperm are required for maximum stimulation of oogenic progression and egg deposition immediately after mating.
果蝇黑腹果蝇的精液成分、附属腺蛋白(Acps)和精子,会诱导雌性在大约11天内产下大量受精卵。这种高且持续的产卵水平要求刺激卵子发生以提供必要的成熟卵母细胞。为了研究Acps和精子在产卵过程中的相对时间和作用,我们检测了与基因改变的雄性交配的雌性的卵子发生进程速率和产卵率,这些雄性的精液中缺乏Acps和/或精子,并对这些数据进行了通径分析。我们发现Acps和精子是诱导高卵子发生进程速率和快速产卵所必需的互补刺激因素。虽然单独的Acps就能诱导产卵和卵子发生进程,但在交配后立即最大程度地刺激卵子发生进程和产卵则需要Acps和精子两者。