Structure and function of cytokinin oxidase/dehydrogenase genes of maize, rice, Arabidopsis and other species.

IF 2.7 3区生物学 Q2 PLANT SCIENCES

Journal of Plant Research Pub Date : 2003-06-01 Epub Date: 2003-04-29 DOI:10.1007/s10265-003-0096-4

Thomas Schmülling, Tomás Werner, Michael Riefler, Eva Krupková, Isabel Bartrina y Manns

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引用次数: 359

Abstract

Cytokinin oxidases/dehydrogenases (CKX) catalyze the irreversible degradation of the cytokinins isopentenyladenine, zeatin, and their ribosides in a single enzymatic step by oxidative side chain cleavage. To date the sequences of 17 fully annotated CKX genes are known, including two prokaryotic genes. The CKX gene families of Arabidopsis thaliana and rice comprise seven and at least ten members, respectively. The main features of CKX genes and proteins are summarized in this review. Individual proteins differ in their catalytic properties, their subcellular localization and their expression domains. The evolutionary development of cytokinin-catabolizing gene families and the individual properties of their members indicate an important role for the fine-tuned control of catabolism to assure proper regulation of cytokinin functions. The use of CKX genes as a tool in studies of cytokinin biology and biotechnological applications is discussed.

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玉米、水稻、拟南芥等植物细胞分裂素氧化酶/脱氢酶基因的结构与功能

细胞分裂素氧化酶/脱氢酶(CKX)通过氧化侧链裂解，催化细胞分裂素异戊烯腺苷、玉米素及其核苷的不可逆降解。迄今为止，已知17个完全注释的CKX基因序列，包括两个原核基因。拟南芥和水稻的CKX基因家族分别包含7个和至少10个成员。本文就CKX基因及其蛋白的主要特征作一综述。单个蛋白质的催化特性、亚细胞定位和表达域不同。细胞分裂素分解代谢基因家族的进化发展及其成员的个体特性表明，细胞分裂素分解代谢的精细控制对细胞分裂素功能的适当调节具有重要作用。讨论了CKX基因在细胞分裂素生物学研究和生物技术应用中的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Plant Research 生物-植物科学

CiteScore

5.40

自引率

3.60%

发文量

审稿时长

1 months

期刊介绍： The Journal of Plant Research is an international publication that gathers and disseminates fundamental knowledge in all areas of plant sciences. Coverage extends to every corner of the field, including such topics as evolutionary biology, phylogeography, phylogeny, taxonomy, genetics, ecology, morphology, physiology, developmental biology, cell biology, molecular biology, biochemistry, biophysics, bioinformatics, and systems biology. The journal presents full-length research articles that describe original and fundamental findings of significance that contribute to understanding of plants, as well as shorter communications reporting significant new findings, technical notes on new methodology, and invited review articles.