植物地上部对铝毒的生理响应和其耐性_英文_.pdfVIP

Journal of Plant Physiology and Molecular Biology 2006, 32 (2):-155 143 143 综　述Review Physiological Responses and Tolerance of Plant Shoot to Aluminum Toxicity * CHEN Li-Song Colleg e of Horticulture, Fuj ian Agriculture and Forestry University, Fuzhou 350002, China Abstract: Aluminum (Al) toxicity is one of the most est symptoms of Al injury and the most easily recognized deleteriou s factors for plant growth in acidic soils b e- symptom in solution culture (Delhaize and Ryan 1995), cause over 50% of the world ’s potentially arable lands accumulating evidence shows that Al affects photosyn- are acidic. In recent years, considerable research has been thesis (Pereira et al. 2000), photoprotective sy stems conducted to understand the mechanisms of Al toxicity (Chen et al. 2005a), water relations (Simon et al. 1994a), and tolerance in plants, and some review p apers have carbohydrate content (Graham 2002), mineral nutrition been published. But most p apers addressed mainly the (Lidon et al. 1999), organic acid metabolism (Watanabe mechanisms of Al toxicity and tolerance in plant root and Osaki 2002a), and nitrogen metabolism (Xiao 2002) system, because inhibition of root growth is one of the in plant shoot. Recently, attention has been paid to those earliest symptoms of Al injury and the most easily rec- plant species that can accumulate Al to high levels in the ognized symptom in solution culture. This paper reviews above-ground parts and their mechanisms of Al detoxifi- the effects of Al on photosynthesis, photoprotective cation (Ma et al. 1997b; Shen et al. 2004; Watanabe and systems, water use efficiency (WUE), water content, car- Osaki 2002a). Some review papers have been pu