LEAF RESPONSES TO FE DEFICIENCY - A REVIEW
LEAF RESPONSES TO FE DEFICIENCY - A REVIEW
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DOI：
10.1080/01904169209364432
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发表时间：
1992-01-01
影响因子：
2.1
通讯作者：
ABADIA, J
中科院分区：
文献类型：
--
作者：
ABADIA, J
缺铁引起高等植物整个光合机构结构和功能的变化。铁缺乏引起的色素减少似乎是由于类囊体膜形成对铁的绝对需求。在缺铁叶片的类囊体组成中发现的修饰包括光系统II至光系统I化学计量的变化、叶黄素与叶绿素的比例以及它们的脂质组成。这些变化中的一些可能导致对光抑制的一些保护。其他叶组分，如叶脂质和铁组分的变化进行了讨论。此外，还讨论了评价叶片功能的参数，包括气体交换、水分状况和叶绿素荧光的变化。介绍了铁缺乏的新问题，如膜组分的可能滥用，铁缺乏的叶片在白天对光照条件的快速适应变化，以及在受控环境中生长的铁缺乏植物与田间生长的铁缺乏植物的比较。
Iron deficiency induces changes in the structure and function of the whole photosynthetic apparatus of higher plants. The iron deficiency-induced decrease in pigments seems to arise from the absolute requirement for iron in the formation of thylakoid membrane. Modifications found in the thylakoid composition of iron deficient leaves include changes in the photosystem II to photosystem I stoichiometry, in the xanthophylls to chlorophylls ratio and in their lipid composition. Some of these changes may result in some protection towards photoinhibition. Changes in other leaf components, such as leaf lipids and iron fractions are discussed. Changes in parameters evaluating leaf functions, including gas exchange, water status and chlorophyll fluorescence are also discussed. New issues on iron deficiency, such as the possible misuse of membrane fractions, the rapid adaptation changes which are found to occur during the day in the iron deficient leaves in response to light conditions, and the comparison of iron deficient plants grown in controlled environments with iron deficient plants grown in the field are introduced.