TY - JOUR
T1 - Distribution of the tryptophan pathway-derived defensive secondary metabolites gramine and benzoxazinones in Poaceae
AU - Kokubo, Yu
AU - Nishizaka, Miho
AU - Ube, Naoki
AU - Yabuta, Yukinori
AU - Tebayashi, Shin Ichi
AU - Ueno, Kotomi
AU - Taketa, Shin
AU - Ishihara, Atsushi
N1 - Funding Information:
This work was supported by JSPS KAKENHI [grant number 16K07718] for A. I., [grant number 16K15069] for S. T., and by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) as part of Joint Research Program implemented at the Institute of Plant Science and Resources, Okayama University, Japan.
Publisher Copyright:
© 2016 Japan Society for Bioscience, Biotechnology, and Agrochemistry.
PY - 2017
Y1 - 2017
N2 - The Poaceae is a large taxonomic group consisting of approximately 12,000 species and is classified into 12 subfamilies. Gramine and benzoxazinones (Bxs), which are biosynthesized from the tryptophan pathway, are well-known defensive secondary metabolites in the Poaceae. We analyzed the presence or absence of garamine and Bxs in 64 species in the Poaceae by LC-MS/MS. We found that Hordeum brachyantherum and Hakonechloa macra accumulated gramine, but the presence of gramine was limited to small groups of species. We also detected Bxs in four species in the Pooideae and six species in the Panicoideae. In particular, four species in the Paniceae tribe in Panicoideae accumulaed Bxs, indicating that this tribe is a center of the Bx distribution. Bxs were absent in the subfamilies other than Pooideae and Panicoideae. These findings provide an overview of biased distribution of gramine and Bxs in Poaceae species.
AB - The Poaceae is a large taxonomic group consisting of approximately 12,000 species and is classified into 12 subfamilies. Gramine and benzoxazinones (Bxs), which are biosynthesized from the tryptophan pathway, are well-known defensive secondary metabolites in the Poaceae. We analyzed the presence or absence of garamine and Bxs in 64 species in the Poaceae by LC-MS/MS. We found that Hordeum brachyantherum and Hakonechloa macra accumulated gramine, but the presence of gramine was limited to small groups of species. We also detected Bxs in four species in the Pooideae and six species in the Panicoideae. In particular, four species in the Paniceae tribe in Panicoideae accumulaed Bxs, indicating that this tribe is a center of the Bx distribution. Bxs were absent in the subfamilies other than Pooideae and Panicoideae. These findings provide an overview of biased distribution of gramine and Bxs in Poaceae species.
KW - Benzoxazinones
KW - Gramine
KW - Poaceae
KW - Secondary metabolism
KW - Tryptophan pathway
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U2 - 10.1080/09168451.2016.1256758
DO - 10.1080/09168451.2016.1256758
M3 - Article
C2 - 27854190
AN - SCOPUS:85012262908
VL - 81
SP - 431
EP - 440
JO - Bioscience, Biotechnology and Biochemistry
JF - Bioscience, Biotechnology and Biochemistry
SN - 0916-8451
IS - 3
ER -