A new lead chemical for strigolactone biosynthesis inhibitors.

A new lead chemical for strigolactone biosynthesis inhibitors.
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DOI:
10.1093/pcp/pcq077
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发表时间:
2010-07
影响因子:
4.9
通讯作者:
Asami T
Asami T
中科院分区:
生物学2区
文献类型:
--
作者:
Ito S;Kitahata N;Umehara M;Hanada A;Kato A;Ueno K;Mashiguchi K;Kyozuka J;Yoneyama K;Yamaguchi S;Asami T

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几种含三唑的化学物质先前已被证明可以作为细胞色素 P450 单加氧酶的有效抑制剂。为了发现独脚金内酯生物合成抑制剂,我们筛选了三唑衍生物的化学库,以寻找诱导水稻幼苗分蘖芽生长的化学物质。我们发现了一种三唑型化学物质 TIS13 [2,2-二甲基-7-苯氧基-4-(1H-1,2,4-三唑-1-基)庚烷-3-ol],它能诱导野生型幼苗第二分蘖芽的生长,正如在未经处理的独脚金内酯缺陷 d10 突变幼苗中观察到的那样。 TIS13处理以浓度依赖性方式降低根和根分泌物中的独脚金内酯水平。 GR24(一种合成独脚金内酯)与 TIS13 的共同施用消除了 TIS13 诱导的分蘖芽生长。综上所述,这些结果表明 TIS13 抑制水稻幼苗中的独脚金内酯生物合成。我们认为 TIS13 是一种用于开发特定独脚金内酯生物合成抑制剂的新先导化合物。
Several triazole-containing chemicals have previously been shown to act as efficient inhibitors of cytochrome P450 monooxygenases. To discover a strigolactone biosynthesis inhibitor, we screened a chemical library of triazole derivatives to find chemicals that induce tiller bud outgrowth of rice seedlings. We discovered a triazole-type chemical, TIS13 [2,2-dimethyl-7-phenoxy-4-(1H-1,2,4-triazol-1-yl)heptan-3-ol], which induced outgrowth of second tiller buds of wild-type seedlings, as observed for non-treated strigolactone-deficient d10 mutant seedlings. TIS13 treatment reduced strigolactone levels in both roots and root exudates in a concentration-dependent manner. Co-application of GR24, a synthetic strigolactone, with TIS13 canceled the TIS13-induced tiller bud outgrowth. Taken together, these results indicate that TIS13 inhibits strigolactone biosynthesis in rice seedlings. We propose that TIS13 is a new lead compound for the development of specific strigolactone biosynthesis inhibitors.
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