Lauter F R
Institut für Genbiologische Forschung, AG Frommer, Berlin, Germany.
Mol Gen Genet. 1996 Oct 28;252(6):751-4. doi: 10.1007/BF02173983.
The tomato gene LeRse-1 was isolated from a root hair-specific cDNA library. The amino acid sequence of the LeRse-1 product displayed a high degree of identity to that of AgMtd, a mannitol dehydrogenase-encoding gene from celery. Expression of LeRse-1 was found to be restricted to the root organs of tomato, with no detectable transcripts in stems and leaves. Transcripts of LeRse-1 were detected in root hairs, as well as other root tissues of mature plants and seedlings. Root-specific LeRse-1 expression increased upon exposure of the shoot to light. Since roots were kept in darkness, shoot-to-root communication is required for light-induced LeRse-1 RNA accumulation.
番茄基因LeRse-1是从一个根毛特异性cDNA文库中分离出来的。LeRse-1产物的氨基酸序列与芹菜中编码甘露醇脱氢酶的基因AgMtd的氨基酸序列具有高度同源性。研究发现，LeRse-1的表达仅限于番茄的根器官，在茎和叶中未检测到转录本。在成熟植株和幼苗的根毛以及其他根组织中检测到了LeRse-1的转录本。将地上部分暴露于光照下，根特异性的LeRse-1表达增加。由于根处于黑暗中，光诱导的LeRse-1 RNA积累需要地上部分与根之间的信号传导。
