Chronic drought stress reduced but not protected Shantung maple (Acer truncatum Bunge) from adverse effects of ozone (O3) on growth and physiology in the suburb of Beijing, China
Chronic drought stress reduced but not protected Shantung maple (Acer truncatum Bunge) from adverse effects of ozone (O3) on growth and physiology in the suburb of Beijing, China
复制标题
慢性干旱胁迫减轻了中国北京郊区山东枫树 (Acer truncatum Bunge) 的生长和生理机能，使其免受臭氧 (O3) 的不利影响
DOI：
10.1016/j.envpol.2015.02.023
复制
发表时间：
2015-06-01
影响因子：
8.9
通讯作者：
Wang, Xiaoke
中科院分区：
文献类型：
--
作者：
Li, Li;Manning, William J.;Wang, Xiaoke
2012-2013年，在北京郊区采用开顶式气室（OTCs）对元宝枫幼苗进行了为期两年的臭氧浓度升高和干旱胁迫处理。结果表明，AO和DS处理均显著降低了叶片质量面积（LMA）、气孔导度（Gs）、光饱和光合速率（A（sat））以及地上部和地下部生物量。干旱胁迫虽然减轻了叶片伤害、叶片光合色素、叶片光合速率、高生长和地径的表达，但由于有限的碳固定作用，O-3诱导的A（sat）、Gs和总生物量的减少增加了23.7%。分别为15.5%和8.1%。这些数据表明，在本试验条件下，干旱不能保护山东枫树幼苗免受O-3的影响。(C)2015爱思唯尔有限公司版权所有。
A two-year experiment exposing Acer truncatum Bunge seedlings to elevated ozone (03) concentrations above ambient air (AO) and drought stress (DS) was carried out using open-top chambers (OTCs) in a suburb of Beijing in north China in 2012-2013. The results suggested that AO and DS had both significantly reduced leaf mass area (LMA), stomatal conductance (Gs), light saturated photosynthetic rate (A(sat)) as well as above and below ground biomass at the end of the experiment. It appeared that while drought stress mitigated the expression of foliar injury, LMA, leaf photosynthetic pigments, height growth and basal diameter, due to limited carbon fixation, the O-3 - induced reductions in A(sat), Gs and total biomass were enhanced 23.7%. 15.5% and 8.1% respectively. These data suggest that when the whole plant was considered that drought under the conditions of this experiment did not protect the Shantung maple seedlings from the effects of O-3. (C) 2015 Elsevier Ltd. All rights reserved.