title: PARASITIC PLANTS. Probing strigolactone receptors in Striga hermonthica with fluorescence.
abstract: Elucidating the signaling mechanism of strigolactones has been the key to controlling the devastating problem caused by the parasitic plant Striga hermonthica. To overcome the genetic intractability that has previously interfered with identification of the strigolactone receptor, we developed a fluorescence turn-on probe, Yoshimulactone Green (YLG), which activates strigolactone signaling and illuminates signal perception by the strigolactone receptors. Here we describe how strigolactones bind to and act via ShHTLs, the diverged family of α/β hydrolase-fold proteins in Striga. Live imaging using YLGs revealed that a dynamic wavelike propagation of strigolactone perception wakes up Striga seeds. We conclude that ShHTLs function as the strigolactone receptors mediating seed germination in Striga. Our findings enable access to strigolactone receptors and observation of the regulatory dynamics for strigolactone signal transduction in Striga.
authors: Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan. Department of Cell and Systems Biology, University of Toronto, 25 Willcocks Street, Toronto, Ontario M5S 3B2, Canada. yuichiro@itbm.nagoya-u.ac.jp hagi@itbm.nagoya-u.ac.jp.
authors: Yuichiro
authors: Y
authors: Tsuchiya
authors: Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan. Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan.
authors: Masahiko
authors: M
authors: Yoshimura
authors: Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan.
authors: Yoshikatsu
authors: Y
authors: Sato
authors: Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan.
authors: Keiko
authors: K
authors: Kuwata
authors: Department of Cell and Systems Biology, University of Toronto, 25 Willcocks Street, Toronto, Ontario M5S 3B2, Canada.
authors: Shigeo
authors: S
authors: Toh
authors: Department of Cell and Systems Biology, University of Toronto, 25 Willcocks Street, Toronto, Ontario M5S 3B2, Canada.
authors: Duncan
authors: D
authors: Holbrook-Smith
authors: Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan.
authors: Hua
authors: H
authors: Zhang
authors: Department of Cell and Systems Biology, University of Toronto, 25 Willcocks Street, Toronto, Ontario M5S 3B2, Canada.
authors: Peter
authors: P
authors: McCourt
authors: Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan. Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan. Japan Science and Technology Agency-Exploratory Research for Advanced Technology, Itami Molecular Nanocarbon Project, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan.
authors: Kenichiro
authors: K
authors: Itami
authors: Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan. Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan.
authors: Toshinori
authors: T
authors: Kinoshita
authors: Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan. Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan. yuichiro@itbm.nagoya-u.ac.jp hagi@itbm.nagoya-u.ac.jp.
authors: Shinya
authors: S
authors: Hagihara
mesh_terms: D005452:Fluoresceins / Q000737:chemistry / Q000378:metabolism; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000737:chemistry / Q000378:metabolism; D018525:Germination; D006867:Hydrolases / Q000378:metabolism; D006868:Hydrolysis; D007783:Lactones / Q000378:metabolism*; D057054:Molecular Imaging / Q000379:methods; D008969:Molecular Sequence Data; D010937:Plant Growth Regulators / Q000378:metabolism*; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism*; D011956:Receptors, Cell Surface / Q000235:genetics / Q000378:metabolism*; D012639:Seeds / Q000254:growth & development* / Q000378:metabolism; D015398:Signal Transduction; D034362:Striga / Q000254:growth & development* / Q000378:metabolism
chemical_list: D005452:Fluoresceins; D005456:Fluorescent Dyes; D007783:Lactones; D010937:Plant Growth Regulators; D010940:Plant Proteins; D011956:Receptors, Cell Surface; C000601134:Yoshimulactone Green; C483518:strigol; D006867:Hydrolases