Location: Cereal Crops ResearchTitle: Plant responses to tropospheric ozone
|LI, YONGFANG - Henan Agricultural University|
|MUTHURAMALINGAM, MEENKUMARI - Oklahoma State University|
Submitted to: Springer Verlag
Publication Type: Book / Chapter
Publication Acceptance Date: 9/21/2015
Publication Date: 1/8/2016
Citation: Li, Y., Muthuramalingam, M., Mahalingam, R. 2016. Plant responses to tropospheric ozone. In: P.K. Jaiwal, R.P. Singh, O.P. Dhankher, editors. Genetic Manipulation in Plants for Mitigation of Climate Change. Springer Verlag. p. 1-14. doi: 10.1007/978-81-322-2662-8.
Interpretive Summary: Tropspheric ozone is the second most abundant air pollutant and a major component of the global climate change. This chapter summarizes the impact of ozone stress in plants at physiological, biochemical and molecular levels. Authors provide some perspectives on conducting screening for ozone tolerance in conjunction with other co-occurring stresses.
Technical Abstract: Tropospheric ozone is the second most abundant air pollutant and an important component of the global climate change. Over five decades of research on the phytotoxicity of ozone in model plants systems, crop plants and forest trees have provided some insight into the physiological, biochemical and molecular responses to this toxic pollulant. Majority of the studies on ozone have been conducted using acute treatment regimes on model plant systems. Several omics platforms have been used to investigate the ozone responses in plants. Some efforts have been undertaken to understand the genetic basis of ozone resistance using Arabidopsis and rice. The omics and mapping studies have shown that resistance to ozone impinges upon multiple pathways including phytohormones, stress/defense, secondary metabolism and redox signaling. Furthermore, ozone stress is more likely to co-occur with other global climate change factors including increasing CO2 levels, high temperatures and other abiotic stresses such as drought, UV-light and salinity. Crop germplasm screening for ozone resistance should consider using free-air concentration enrichment technology in conjunction with state-of-the-art remote sense reflectance spectroscopy. Cis-genic and transgenic approaches to develop ozone resistant crops will be more successful if combinations of ozone and other stresses are taken into consideration.