背景:条件依赖性性别理论预测,在其他条件相同的情况下,与较健康的个体相比,不太健康的个体会以更高的比率超越。在这里,我们使用了混合交配植物Lamiumamplexcaule,能够产生两种自花授粉的封闭花(CL),与开放的花朵(CH)一起,允许异花授粉来测试它。我们研究了非生物胁迫-盐溶液灌溉-对植物及其后代开花模式的影响。我们监测了几个开花和营养参数,包括花卉的数量和分布,CH分数,和植物大小。
结果:我们发现,受胁迫的植物显示出自花授粉的增加趋势,以及花和营养发育的不足。然而,当父母准备时,强调的植物表现出温和的反应。紧张父母的未紧张后代表现出相反的反应,并表现出更大的异交趋势,并改善花卉和植物性发育。
结论:总之,我们发现,胁迫会影响经历胁迫的植物以及随后的F2代后代的繁殖策略。我们的结果提供了实验证据,支持对健康相关性别和传播理论的跨代扩展,一个人的性和分散倾向可能取决于其父母所经历的压力。
BACKGROUND: The theory of Condition Dependent Sex predicts that - everything else being equal - less fit individuals would outcross at higher rates compared with fitter ones. Here we used the mixed mating plant Lamium amplexicaule, capable of producing both self-pollinating closed flowers (CL), alongside open flowers (CH) that allow cross pollination to test it. We investigated the effects of abiotic stress - salt solution irrigation - on the flowering patterns of plants and their offspring. We monitored several flowering and vegetative parameters, including the number and distribution of flowers, CH fraction, and plant size.
RESULTS: We found that stressed plants show an increased tendency for self-pollination and a deficit in floral and vegetative development. However, when parentally primed, stressed plants show a milder response. Un-stressed offspring of stressed parents show reversed responses and exhibit an increased tendency to outcross, and improve floral and vegetative development.
CONCLUSIONS: In summary, we found that stress affects the reproduction strategy in the plants that experienced the stress and in subsequent offspring through F2 generation. Our results provide experimental evidence supporting a transgenerational extension to the theories of fitness associate sex and dispersal, where an individual\'s tendency for sex and dispersal may depend on the stress experienced by its parents.