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Tryptophan-independent auxin biosynthesis contributes to early embryogenesis in Arabidopsis
Bing Wang,Jinfang Chu,Tianying Yu,Qian Xu,Xiaohong Sun,Jia Yuan,Guosheng Xiong,Guodong Wang,Yonghong Wang,and Jiayang Li
PNAS
Abstract
The phytohormone auxin regulates nearly all aspects of plant growth and development. Tremendous achievements have been made in elucidating the tryptophan (Trp)-dependent auxin biosynthetic pathway; however, the genetic evidence, key components, and functions of the Trp-independent pathway remain elusive. Here we report that the Arabidopsis indole synthase mutant is defective in the long-anticipated Trp-independent auxin biosynthetic pathway and that auxin synthesized through this spatially and temporally regulated pathway contributes significantly to the establishment of the apical–basal axis, which profoundly affects the early embryogenesis in Arabidopsis. These discoveries pave an avenue for elucidating the Trp-independent auxin biosynthetic pathway and its functions in regulating plant growth and development.
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论文编号: |
DOI:10.1073/pnas.1503998112 |
论文题目: |
Tryptophan-independent auxin biosynthesis contributes to early embryogenesis in Arabidopsis |
英文论文题目: |
Tryptophan-independent auxin biosynthesis contributes to early embryogenesis in Arabidopsis |
第一作者: |
Bing Wang,Jinfang Chu,Tianying Yu,Qian Xu,Xiaohong Sun,Jia Yuan,Guosheng Xiong,Guodong Wang,Yonghong Wang,and Jiayang Li |
英文第一作者: |
Bing Wang,Jinfang Chu,Tianying Yu,Qian Xu,Xiaohong Sun,Jia Yuan,Guosheng Xiong,Guodong Wang,Yonghong Wang,and Jiayang Li |
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2015-03-26 |
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摘要: |
The phytohormone auxin regulates nearly all aspects of plant growth and development. Tremendous achievements have been made in elucidating the tryptophan (Trp)-dependent auxin biosynthetic pathway; however, the genetic evidence, key components, and functions of the Trp-independent pathway remain elusive. Here we report that the Arabidopsis indole synthase mutant is defective in the long-anticipated Trp-independent auxin biosynthetic pathway and that auxin synthesized through this spatially and temporally regulated pathway contributes significantly to the establishment of the apical–basal axis, which profoundly affects the early embryogenesis in Arabidopsis. These discoveries pave an avenue for elucidating the Trp-independent auxin biosynthetic pathway and its functions in regulating plant growth and development. |
英文摘要: |
The phytohormone auxin regulates nearly all aspects of plant growth and development. Tremendous achievements have been made in elucidating the tryptophan (Trp)-dependent auxin biosynthetic pathway; however, the genetic evidence, key components, and functions of the Trp-independent pathway remain elusive. Here we report that the Arabidopsis indole synthase mutant is defective in the long-anticipated Trp-independent auxin biosynthetic pathway and that auxin synthesized through this spatially and temporally regulated pathway contributes significantly to the establishment of the apical–basal axis, which profoundly affects the early embryogenesis in Arabidopsis. These discoveries pave an avenue for elucidating the Trp-independent auxin biosynthetic pathway and its functions in regulating plant growth and development. |
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PNAS |
英文刊物名称: |
PNAS |
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其它备注: |
Bing Wang,Jinfang Chu,Tianying Yu,Qian Xu,Xiaohong Sun,Jia Yuan,Guosheng Xiong,Guodong Wang,Yonghong Wang,and Jiayang Li. Tryptophan-independent auxin biosynthesis contributes to early embryogenesis in Arabidopsis. PNAS. DOI:10.1073/pnas.1503998112 |
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