Instituto de Biología Molecular y Celular de Plantas (Consejo Superior de Investigaciones Científicas-Universidad Politécnica de Valencia), Valencia, Spain.
Plant Physiol Biochem. 2011 Apr;49(4):388-94. doi: 10.1016/j.plaphy.2011.02.008. Epub 2011 Feb 12.
Brittle leaf disease or maladie des feuilles cassantes (MFC) is a disorder affecting date palms (Phoenix dactylifera L.) which after a long declining process eventually leads to the death of the plant. No causal agent for the disease has been found so far but leaflets of affected palms are Mn-deficient despite the existence of adequate exchangeable Mn in the soils in which affected palms grow. The disease is specifically associated with an increase in a series of chloroplastic RNAs. A proteomic analysis of leaflets of affected and unaffected date palms showed differences in quantities of several proteins. Mn-binding PSBO and PSBP proteins, components of the oxygen-evolving complex of photosystem II, were decreased in affected tissue, reinforcing the relation between MFC and Mn deficiency. The quantities of other proteins were increased by disease suggesting a response to stress.
脆叶病或“maladie des feuilles cassantes”（MFC）是一种影响枣椰树（Phoenix dactylifera L.）的疾病，在一个长期的衰退过程后，最终导致植物死亡。迄今为止，尚未发现该疾病的致病因子，但受影响的枣椰树的叶片尽管在受影响的枣椰树生长的土壤中有足够的可交换锰，但仍缺乏锰。该疾病与一系列叶绿体 RNA 的增加特异性相关。对受影响和未受影响的枣椰树叶片的蛋白质组分析显示，几种蛋白质的数量存在差异。锰结合的 PSBO 和 PSBP 蛋白是光系统 II 放氧复合物的组成部分，在受影响的组织中减少，这加强了 MFC 与锰缺乏之间的关系。疾病导致其他蛋白质数量增加，表明对胁迫的反应。
