PDF(Pubmed)
Abstract：
Temperature plays an essential role in a plant\'s life. The current investigation reveals that photoreceptors, whose activity is affected by the geomagnetic field, are a critical element of its perception. This knowledge suggests that plants\' responses to temperature could shift in different geomagnetic conditions. To test this hypothesis, we studied the change in the growth response of the peat moss Sphagnum riparium to temperature with a gradual increase in the geomagnetic Kp index. Growth data for this species were collected from Karelian mires by detailed monitoring over eight full growing seasons. The growth of 209,490 shoots was measured and 1439 growth rates were obtained for this period. The analysis showed a strong positive dependence of sphagnum growth on temperature (r = 0.58; n = 1439; P = 1.7 × 10-119), which is strongest in the Kp range from 0.87 to 1.61 (r = 0.65; n = 464; P = 4.5 × 10-58). This Kp interval is clearer after removing the seasonal contributions from the growth rate and temperature and is preserved when diurnal temperature is used. Our results are consistent with the hypothesis and show the unknown contribution of the geomagnetic field to the temperature responses of plants.
摘要：
温度在植物的生命中起着至关重要的作用。目前的调查显示，光感受器，其活动受到地磁场的影响，是其感知的关键要素。这些知识表明，在不同的地磁条件下，植物对温度的反应可能会发生变化。为了检验这个假设，我们研究了随着地磁Kp指数的逐渐增加，泥炭藓泥炭藓对温度的生长响应的变化。通过对八个完整生长季节的详细监测，从卡累利阿泥潭中收集了该物种的生长数据。在此期间，测量了209,490个芽的生长，并获得了1439个生长速率。分析显示泥炭藓生长对温度有很强的正依赖性（r=0.58；n=1439；P=1.7×10-119），在0.87至1.61的Kp范围内最强（r=0.65；n=464；P=4.5×10-58）。从生长速率和温度中去除季节性影响后，此Kp间隔更加清晰，并且在使用昼夜温度时得以保留。我们的结果与该假设一致，并显示了地磁场对植物温度响应的未知贡献。
