Field transcriptome analysis reveals a molecular mechanism for cassava-flowering in a mountainous environment in Southeast Asia.

Autor: Tokunaga H; Center for Sustainable Resource Science, RIKEN, Kanagawa, Japan. hiroki.tokunaga@riken.jp.; International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam. hiroki.tokunaga@riken.jp., Quynh DTN; International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam.; National Key Laboratory for Plant Cell Biotechnology, Agricultural Genetics Institute (AGI), Hanoi, Vietnam., Anh NH; International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam.; National Key Laboratory for Plant Cell Biotechnology, Agricultural Genetics Institute (AGI), Hanoi, Vietnam., Nhan PT; Hung Loc Agricultural Research Center (HLARC), Dong Nai, Vietnam., Matsui A; Center for Sustainable Resource Science, RIKEN, Kanagawa, Japan., Takahashi S; Center for Sustainable Resource Science, RIKEN, Kanagawa, Japan., Tanaka M; Center for Sustainable Resource Science, RIKEN, Kanagawa, Japan., Anh NM; International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam.; JICA Vietnam Office, Hanoi, Vietnam., Van Dong N; International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam.; National Key Laboratory for Plant Cell Biotechnology, Agricultural Genetics Institute (AGI), Hanoi, Vietnam., Ham LH; International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam.; National Key Laboratory for Plant Cell Biotechnology, Agricultural Genetics Institute (AGI), Hanoi, Vietnam., Higo A; Kihara Institute for Biological Research, Yokohama City University, Kanagawa, Japan., Hoa TM; Hung Loc Agricultural Research Center (HLARC), Dong Nai, Vietnam., Ishitani M; International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam.; International Center for Tropical Agriculture (CIAT), Cali, Colombia., Minh NBN; Hung Loc Agricultural Research Center (HLARC), Dong Nai, Vietnam., Hy NH; Hung Loc Agricultural Research Center (HLARC), Dong Nai, Vietnam., Srean P; University of Battambang (UBB), Battambang, Cambodia., Thu VA; Center for Sustainable Resource Science, RIKEN, Kanagawa, Japan.; International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam.; National Key Laboratory for Plant Cell Biotechnology, Agricultural Genetics Institute (AGI), Hanoi, Vietnam., Tung NB; Hung Loc Agricultural Research Center (HLARC), Dong Nai, Vietnam., Vu NA; International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam.; National Key Laboratory for Plant Cell Biotechnology, Agricultural Genetics Institute (AGI), Hanoi, Vietnam., Yamaguchi K; Kihara Institute for Biological Research, Yokohama City University, Kanagawa, Japan., Tsuji H; Kihara Institute for Biological Research, Yokohama City University, Kanagawa, Japan., Utsumi Y; Center for Sustainable Resource Science, RIKEN, Kanagawa, Japan.; International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam., Seki M; Center for Sustainable Resource Science, RIKEN, Kanagawa, Japan. motoaki.seki@riken.jp.; International Laboratory for Cassava Molecular Breeding (ILCMB), AGI, Hanoi, Vietnam. motoaki.seki@riken.jp.; Kihara Institute for Biological Research, Yokohama City University, Kanagawa, Japan. motoaki.seki@riken.jp.; Cluster for Pioneering Research, RIKEN, Saitama, Japan. motoaki.seki@riken.jp.
Jazyk: angličtina
Zdroj: Plant molecular biology [Plant Mol Biol] 2022 Jun; Vol. 109 (3), pp. 233-248. Date of Electronic Publication: 2020 Sep 09.
DOI: 10.1007/s11103-020-01057-0
Abstrakt: Key Message: The field survey in this article showed in 'KU50', a popular variety and late-branching type of cassava in Southeast Asia, that flowering rarely occurs in normal-field conditions in Southeast Asia but is strongly induced in the dry season in the mountainous region. Flowering time is correlated with the expression patterns of MeFT1 and homologs of Arabidopsis GI, PHYA, and NF-Ys. Cassava (Manihot esculenta Crantz) is a tropical crop that is propagated vegetatively rather than sexually by seed. Flowering rarely occurs in the erect-type variety grown in Southeast Asia, but it is known that cassava produces flowers every year in mountainous regions. Data pertaining to the effect of environmental factors on flowering time and gene expression in cassava, however, is limited. The aim of the present study was to determine the kinds of environmental conditions that regulate flowering time in cassava and the underlying molecular mechanisms. The flowering status of KU50, a popular variety in Southeast Asia and late-branching type of cassava, was monitored in six fields in Vietnam and Cambodia. At non-flowering and flowering field locations in North Vietnam, the two FLOWERING LOCUS T (FT)-like genes, MeFT1 and MeFT2, were characterized by qPCR, and the pattern of expression of flowering-related genes and genes responsive to environmental signals were analyzed by using RNA sequencing data from time-series samples. Results indicate that cassava flowering was induced in the dry season in the mountain region, and that flowering time was correlated with the expression of MeFT1, and homologs of Arabidopsis GI, PHYA, and NF-Ys. Based upon these data, we hypothesize that floral induction in cassava is triggered by some conditions present in the mountain regions during the dry season.
(© 2020. Springer Nature B.V.)
Databáze: MEDLINE
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