Agricultural Research Institute of the Hungarian Academy of Sciences, Martonvásár, Hungary.
Plant Biol (Stuttg). 2011 Jan;13(1):78-84. doi: 10.1111/j.1438-8677.2010.00343.x.
This paper provides a detailed phenotypic analysis of the abscisic acid (ABA) hypersensitive Cap Binding Protein 20 (cbp20) mutant. Some hitherto undescribed changes were found in the tissue structure and epidermal morphology of this mutant. These include more and smaller cells in the epidermis, a thicker cuticle and more frequent occurrence of trichomes on leaf surfaces. Some of these traits may contribute to the physiological processes responsible for the water-saving behaviour of the mutant. Abnormal spatial patterns between stomatal pore complexes were also found on various organs of the mutant. All these observations indicate profoundly disturbed development of epidermal tissue in the cbp20 mutant, which has not previously been reported for this class of mutants. A potential connection between the new phenotypes and disturbed miRNA metabolism and mRNA splicing of the mutant is discussed.
本文对脱落酸（ABA）超敏感的 Cap 结合蛋白 20（cbp20）突变体进行了详细的表型分析。在该突变体的组织结构和表皮形态中发现了一些以前未描述的变化。这些变化包括表皮中更多和更小的细胞、更厚的角质层和叶片表面上更频繁出现的刚毛。这些特征中的一些可能有助于解释突变体的节水行为的生理过程。在突变体的各种器官上还发现了气孔孔复合体之间异常的空间模式。所有这些观察结果表明，cbp20 突变体的表皮组织发育严重受损，这在以前的这类突变体中没有报道过。讨论了新表型与突变体中 miRNA 代谢和 mRNA 剪接紊乱之间的潜在联系。
