DOI: 10.3390/plants9020269
论文题名: Combined effects of UV‐B and drought on native and exotic populations of Verbascum thapsus l.
作者: Hock M. ; Plos C. ; Sporbert M. ; Erfmeier A.
刊名: Plants
ISSN: 22237747
出版年: 2020
卷: 9, 期: 2 语种: 英语
英文关键词: Additive effect
; Common mullein
; Cross‐resistance
; Environmental filter
; Greenhouse experiment
; Local adaptation
; Native vs. non‐native populations
; New Zealand
; Plant invasions
; Synergistic effect
英文摘要: During plant invasions, exotic species have to face new environmental challenges and are affected by interacting components of global change, which may include more stressful environmental conditions. We investigated an invasive species of New Zealand grasslands, commonly exposed to two concomitant and limiting abiotic factors—high levels of ultraviolet‐B radiation and drought. The extent to which Verbascum thapsus may respond to these interacting stress factors via adaptive responses was assessed in a greenhouse experiment comprising native German plants and plants of exotic New Zealand origins. Plants from both origins were grown within four treatments resulting from the crossed combinations of two levels of UV‐B and drought. Over twelve weeks, we recorded growth, morphological characteristics, physiological responses and productivity. The results showed that drought stress had the strongest effect on biomass, morphology and physiology. Significant effects of UV‐B radiation were restricted to variables of leaf morphology and physiology. We found neither evidence for additive effects of UV‐B and drought nor origin‐dependent stress responses that would indicate local adaptation of native or exotic populations. We conclude that drought‐resistant plant species might be predisposed to handle high UV‐B levels, but emphasize the importance of setting comparable magnitudes in stress levels when testing experimentally for antagonistic interaction effects between two manipulated factors. © 2020 by the authors. Licensee MDPI, Basel, Switzerland. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159807
Appears in Collections: 气候变化与战略
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作者单位: Kiel University, Institute for Ecosystem Research / Geobotany, Olshausenstr. 75, Kiel, 24118, Germany; Martin Luther University Halle‐Wittenberg, Institute of Biology / Geobotany and Botanical Garden, Am Kirchtor 1, Halle, 06108, Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig, Deutscher Platz 5E, Leipzig, 04103, Germany; Friedrich Schiller University Jena, Institute of Ecology and Evolution / Plant Biodiversity, Philosophenweg 16, Jena, 07743, Germany
Recommended Citation:
Hock M.,Plos C.,Sporbert M.,et al. Combined effects of UV‐B and drought on native and exotic populations of Verbascum thapsus l.[J]. Plants,2020-01-01,9(2)