Auxin biosynthesis: spatial regulation and adaptation to stress

被引:79
作者
Blakeslee, Joshua J. [2 ]
Rossi, Tatiana Spatola [1 ]
Kriechbaumer, Verena [1 ]
机构
[1] Oxford Brookes Univ, Dept Biol & Med Sci, Oxford OX3 0BP, England
[2] Ohio State Univ, Dept Hort & Crop Sci, Wooster, OH 44691 USA
关键词
Auxin biosynthesis; drought; endoplasmic reticulum; halotropism; heat stress; membrane; metabolon; TAA; TAR; YUC; ENDOPLASMIC-RETICULUM; METABOLON FORMATION; ARABIDOPSIS; SALT; TRANSPORT; DROUGHT; HALOTROPISM; TOLERANCE; HOMEOSTASIS; ENZYMES;
D O I
10.1093/jxb/erz283
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The plant hormone auxin is essential for plant growth and development, controlling both organ development and overall plant architecture. Auxin homeostasis is regulated by coordination of biosynthesis, transport, conjugation, sequestration/storage, and catabolism to optimize concentration-dependent growth responses and adaptive responses to temperature, water stress, herbivory, and pathogens. At present, the best defined pathway of auxin biosynthesis is the TAA/YUC route, in which the tryptophan aminotransferases TAA and TAR and YUCCA flavin-dependent monooxygenases produce the auxin indole-3-acetic acid from tryptophan. This review highlights recent advances in our knowledge of TAA/YUC-dependent auxin biosynthesis focusing on membrane localization of auxin biosynthetic enzymes, differential regulation in root and shoot tissue, and auxin biosynthesis during abiotic stress.
引用
收藏
页码:5041 / 5049
页数:9
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