Strigolactones are transported from roots to shoots, although not through the xylem

Xiaonan Xie; Kaori Yoneyama; Takaya Kisugi; Takahito Nomura; Kohki Akiyama; Tadao Asami; Koichi Yoneyama

doi:10.1584/jpestics.D15-045

Short Communication

Strigolactones are transported from roots to shoots, although not through the xylem

Xiaonan Xie, Kaori Yoneyama, Takaya Kisugi, Takahito Nomura, Kohki Akiyama, Tadao Asami, Koichi Yoneyama

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Keywords: xylem sap, strigolactones, transportation

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Supplementary material

2015 Volume 40 Issue 4 Pages 214-216

DOI https://doi.org/10.1584/jpestics.D15-045

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Abstract

Strigolactones (SLs) mainly produced in roots move upward to shoots and inhibit axillary bud outgrowth. However, SLs were not detected by LC-MS/MS in xylem saps collected from rice, tomato, cucumber, tobacco, sorghum, and Arabidopsis. d₁-Orobanchol and d₆-4-deoxyorobanchol that were fed to roots of rice plants were detected in shoots harvested 20 hr after treatment, although not in the xylem sap. These results imply that both endogenous and exogenous SLs are transported from roots to shoots, although not through the xylem.

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