Effects of tropospheric ozone on loblolly pine seedlings inoculated with root infecting ophiostomatoid fungi

被引：4

作者：

Chieppa, Jeff ^{[1
]}

Chappelka, Art ^{[2
]}

Eckhardt, Lori ^{[1
]}

机构：

[1] Auburn Univ, Forest Hlth Dynam Lab, Sch Forestry & Wildlife Sci, Auburn, AL 36849 USA

[2] Auburn Univ, Sch Forestry & Wildlife Sci, Auburn, AL 36849 USA

来源：

ENVIRONMENTAL POLLUTION | 2015年 / 207卷

关键词：

Tropospheric ozone; Lob lolly pine; Root infecting ophiostomatoid fungi; Leptographium terebrantis; Grosmannia huntii; CLIMATE-CHANGE; AIR-POLLUTANTS; UNITED-STATES; DISEASE; PATHOGENICITY; LEPTOGRAPHIUM; VERTICICLADIELLA; POLLUTION; EXPOSURE; GROWTH;

D O I：

10.1016/j.envpol.2015.08.053

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Seedlings from four loblolly pine (Pinus taeda L.) families were exposed in open-top chambers to charcoal-filtered air (CF), non-filtered air (NF) or air amended with ozone to 2 times ambient (2x). Two of the families used were selected for their tolerance to fungi associated with Southern Pine Decline while two were selected for their susceptibility. Seedlings were treated with five inoculation treatments: no wound (NW), wound only (W), wound + media (WM), Grosmannia huntii (GH) and Leptographium terebrantis (LT). After 118 days of exposure (AOT40 = 31 ppm-hr(-1) for 2x ozone) seedling volume, dry matter, chlorophyll content, water potential and lesions were measured and analyzed using ANOVA procedures. Our results indicate that seedlings selected for their susceptibility to root infecting ophiostomatoid fungi were also more sensitive to ozone. Overall lesion length was greater on seedlings exposed to elevated ozone concentrations but was not specific to either root infecting ophiostomatoid fungi. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：130 / 137

页数：8

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