Enhanced sensitivity to higher ozone in a pathogen-resistant tobacco cultivar

doi:10.1093/jxb/err361

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	Enhanced sensitivity to higher ozone in a pathogen-resistant tobacco cultivar
	Ye, Lefu 1,3; Fu, Xue 1,2; Ge, Feng 1
刊名	JOURNAL OF EXPERIMENTAL BOTANY
	2012
卷号	63 期号:3 页码:1341-1347
关键词	Elevated ozone open top chamber (OTC) potato virus Y petiole necrosis strain resistance
ISSN号	0022-0957
DOI	10.1093/jxb/err361
通讯作者	Ye, Lefu
英文摘要	Investigations of the effects of elevated ozone (O-3) on the virus-plant system were conducted to inform virus pathogen management strategies better. One susceptible cultivar of tobacco (Nicotiana tabacum L. cv. Yongding) and a resistant cultivar (Nicotiana tabacum L. cv. Vam) to Potato virus Y petiole necrosis strain (PVYN) infection were grown in open-top chambers under ambient and elevated O-3 concentrations. Above-ground biomass, foliage chlorophyll, nitrogen and total non-structural carbohydrate (TNCs), soluble protein, total amino acid (TAA) and nicotine content, and peroxidase (POD) activity were measured to estimate the effects of elevated O-3 on the impact of PVYN in the two cultivars. Results showed that under ambient O-3, the resistant cultivar possessed greater biomass and a lower C/N ratio after infection than the susceptible cultivar; however, under elevated O-3, the resistant cultivar lost its biomass advantage but maintained a lower C/N ratio. Variation of foliar POD activity could be explained as a resistance cost which was significantly correlated with biomass and C/N ratio of the tobacco cultivar. Chlorophyll content remained steady in the resistant cultivar but decreased significantly in the susceptible cultivar when stressors were applied. Foliar soluble protein and free amino acid content, which were related to resistance cost changes, are also discussed. This study indicated that a virus-resistant tobacco cultivar showed increased sensitivity to elevated O-3 compared to a virus-sensitive cultivar.
学科主题	Plant Sciences ; PLANT SCIENCES
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000300238400022
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/12289]
专题	植物保护研究所
作者单位	1.Chinese Acad Sci, Inst Zool, State Key Lab Integrated Management Pest Insects, Beijing 100101, Peoples R China 2.HeiLongjiang Univ, Coll Agr Resource & Environm, Harbin 150086, Peoples R China 3.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Plant Dis & Insect Pests, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Ye, Lefu,Fu, Xue,Ge, Feng. Enhanced sensitivity to higher ozone in a pathogen-resistant tobacco cultivar[J]. JOURNAL OF EXPERIMENTAL BOTANY,2012,63(3):1341-1347.
APA	Ye, Lefu,Fu, Xue,&Ge, Feng.(2012).Enhanced sensitivity to higher ozone in a pathogen-resistant tobacco cultivar.JOURNAL OF EXPERIMENTAL BOTANY,63(3),1341-1347.
MLA	Ye, Lefu,et al."Enhanced sensitivity to higher ozone in a pathogen-resistant tobacco cultivar".JOURNAL OF EXPERIMENTAL BOTANY 63.3(2012):1341-1347.