Changes in phenological events in response to a global warming scenario reveal greater adaptability of winter annual compared with summer annual arabidopsis ecotypes.
Changes in phenological events in response to a global warming scenario reveal greater adaptability of winter annual compared with summer annual arabidopsis ecotypes.
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DOI：
10.1093/aob/mcaa141
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发表时间：
2021-01-01
期刊：
影响因子：
4.2
通讯作者：
Finch-Savage WE
中科院分区：
文献类型：
--
作者：
Footitt S;Hambidge AJ;Finch-Savage WE
全球变暖对生命周期时间的影响是不确定的。我们调查了全球变暖情景下生命周期时间的变化。我们比较了适应于温暖/干燥的开普尔第群岛(CVI)、Macaronesia和北欧Burren(Bur)、爱尔兰和北欧的凉爽/潮湿气候的拟南芥生态型。这分别是冬季和夏季的专有年度。使用全球变暖情景预测2011年气温将上升4摄氏度至约2080年，我们在一个温度梯度隧道的两端都产生了F1种子。然后，在冬季和夏季的年度生活周期中，每个F1群体(凉爽和温暖)在温度梯度的两端产生F2种子。将来自冬季生活史的F2种子沿梯度埋在3个位置，以确定在模拟冬季生活史中温度对出苗的影响。在一个冬季生活史中，温度升高使开花时间冬季提前10.1d°C-1，夏季提前4.9d°C-1。两个生态型的植株大小和种子产量对全球变暖都有积极的响应。在一个冬季生活史中，增温对出苗时间的影响在冬季为正，而在夏季为负。在夏季生命周期中，全球变暖减少了夏季年度植株的大小和种子产量。在北欧夏季年度生态型中观察到的出苗时间可能会加剧预计的春季和夏季气温上升对其建立和繁殖性能的负面影响。相反，Macaronesian冬季一年生植物的幼苗建立可能受益于较高的土壤温度，这将把出苗推迟到秋季，但这也有助于提前春季开花，从而避免夏季高温。在预期的全球变暖情景中，这种可塑性使冬季年度拟南芥生态型比夏季年度拟南芥生态型具有明显的优势。这突出了幼苗建立时间的变化对于了解植物物种对人为气候变化的反应的重要性。
The impact of global warming on life cycle timing is uncertain. We investigated changes in life cycle timing in a global warming scenario. We compared Arabidopsis thaliana ecotypes adapted to the warm/dry Cape Verdi Islands (Cvi), Macaronesia, and the cool/wet climate of the Burren (Bur), Ireland, Northern Europe. These are obligate winter and summer annuals, respectively. Using a global warming scenario predicting a 4 °C temperature rise from 2011 to approx. 2080, we produced F1 seeds at each end of a thermogradient tunnel. Each F1 cohort (cool and warm) then produced F2 seeds at both ends of the thermal gradient in winter and summer annual life cycles. F2 seeds from the winter life cycle were buried at three positions along the gradient to determine the impact of temperature on seedling emergence in a simulated winter life cycle. In a winter life cycle, increasing temperatures advanced flowering time by 10.1 d °C–1 in the winter annual and 4.9 d °C–1 in the summer annual. Plant size and seed yield responded positively to global warming in both ecotypes. In a winter life cycle, the impact of increasing temperature on seedling emergence timing was positive in the winter annual, but negative in the summer annual. Global warming reduced summer annual plant size and seed yield in a summer life cycle. Seedling emergence timing observed in the north European summer annual ecotype may exacerbate the negative impact of predicted increased spring and summer temperatures on their establishment and reproductive performance. In contrast, seedling establishment of the Macaronesian winter annual may benefit from higher soil temperatures that will delay emergence until autumn, but which also facilitates earlier spring flowering and consequent avoidance of high summer temperatures. Such plasticity gives winter annual arabidopsis ecotypes a distinct advantage over summer annuals in expected global warming scenarios. This highlights the importance of variation in the timing of seedling establishment in understanding plant species responses to anthropogenic climate change.
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DOI：
10.1111/tpj.12186
发表时间：
2013-06
期刊：
The Plant journal : for cell and molecular biology
影响因子：
--
作者：
Footitt S;Huang Z;Clay HA;Mead A;Finch-Savage WE
通讯作者：
Finch-Savage WE
影响因子：
16.6
作者：
Née G;Kramer K;Nakabayashi K;Yuan B;Xiang Y;Miatton E;Finkemeier I;Soppe WJJ
通讯作者：
Soppe WJJ
影响因子：
2.1
作者：
Huang, Ziyue;Footitt, Hulya Olcer;Finch-Savage, William E.
通讯作者：
Finch-Savage, William E.
影响因子：
7.3
作者：
Huang, Z.;Footitt, S.;Finch-Savage, W. E.
通讯作者：
Finch-Savage, W. E.
影响因子：
11.6
作者：
Kendall, Sarah L.;Hellwege, Anja;Penfield, Steven
通讯作者：
Penfield, Steven