Visible foliar injury and physiological responses to ozone in Italian provenances of Fraxinus excelsior and F. ornus.
Visible foliar injury and physiological responses to ozone in Italian provenances of Fraxinus excelsior and F. ornus.
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DOI：
10.1100/tsw.2007.10
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发表时间：
2007-03-21
影响因子：
--
通讯作者：
Paoletti E
中科院分区：
文献类型：
--
作者：
Contran N;Paoletti E
比较了同一属不同生态特征的两种木本植物：中温绿蜡树(Fraxinus Excelsior)和耐旱性甘露水曲柳(F.ornus)对高臭氧暴露(150nmolmol-1h，8hday-1，35-40d)的叶片可见伤害和生理反应(气体交换和叶绿素a荧光)。我们还研究了这两个物种中来自意大利北部(皮埃蒙特)和中部(托斯卡纳)的种源对臭氧暴露的反应。可见的叶面伤害的发生和程度表明，精益木霉对O_3的敏感度比麦草高。麦草的气孔导度高于精品麦气孔导度，表明其潜在的臭氧吸收能力较大，这与叶片可见伤害程度较低的情况不一致。赤霉菌较高的碳同化能力表明其具有较高的臭氧解毒和/或修复能力。灰分对臭氧的敏感性的地理差异被记录下来，山麓种源减少气体交换的程度比托斯卡纳种源少，而精益生种源比托斯卡纳种源减少的气体交换更多。皮埃蒙特的精益蜂的可见伤害比托斯卡纳的更早，也更严重，而种源不影响麦冬的可见伤害的发生和程度。
We compared leaf visible injury and physiological responses (gas exchange and chlorophyll a fluorescence) to high O3 exposure (150 nmol mol–1 h, 8 h day–1, 35–40 days) of two woody species of the same genus with different ecological features: the mesophilic green ash (Fraxinus excelsior) and the xerotolerant manna ash (F. ornus). We also studied how provenances from northern (Piedmont) and central (Tuscany) Italy, within the two species, responded to O3 exposure. Onset and extent of visible foliar injury suggested that F. excelsior was more O3 sensitive than F. ornus. The higher stomatal conductance in F. ornus than in F. excelsior suggested a larger potential O3 uptake, in disagreement to lower visible foliar injury. The higher carbon assimilation in F. ornus suggested a higher potential of O3 detoxification and/or repair. Contrasting geographical variations of ash sensitivity to O3 were recorded, as Piedmont provenances reduced gas exchange less than Tuscan provenances in F. excelsior and more in F. ornus. Visible injury was earlier and more severe in F. excelsior from Piedmont than from Tuscany, while the provenance did not affect visible injury onset and extent in F. ornus.
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影响因子：
6.4
作者：
Pell, EJ;Schlagnhaufer, CD;Arteca, RN
通讯作者：
Arteca, RN
影响因子：
8.9
作者：
Kolb, TE;Fredericksen, TS;Skelly, JM
通讯作者：
Skelly, JM
影响因子：
9.4
作者：
Paludan-Müller, G;Saxe, H;Leverenz, JW
通讯作者：
Leverenz, JW
影响因子：
7.3
作者：
TJOELKER, MG;VOLIN, JC;REICH, PB
通讯作者：
REICH, PB
影响因子：
9.4
作者：
Bussotti, F;Agati, G;Tani, C
通讯作者：
Tani, C