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Engineering of the rose flavonoid biosynthetic pathway successfully generated blue-hued flowers accumulating delphinidin 总被引:8,自引:0,他引:8
Katsumoto Y Fukuchi-Mizutani M Fukui Y Brugliera F Holton TA Karan M Nakamura N Yonekura-Sakakibara K Togami J Pigeaire A Tao GQ Nehra NS Lu CY Dyson BK Tsuda S Ashikari T Kusumi T Mason JG Tanaka Y 《Plant & cell physiology》2007,48(11):1589-1600
Flower color is mainly determined by anthocyanins. Rosa hybrida lacks violet to blue flower varieties due to the absence of delphinidin-based anthocyanins, usually the major constituents of violet and blue flowers, because roses do not possess flavonoid 3',5'-hydoxylase (F3'5'H), a key enzyme for delphinidin biosynthesis. Other factors such as the presence of co-pigments and the vacuolar pH also affect flower color. We analyzed the flavonoid composition of hundreds of rose cultivars and measured the pH of their petal juice in order to select hosts of genetic transformation that would be suitable for the exclusive accumulation of delphinidin and the resulting color change toward blue. Expression of the viola F3'5'H gene in some of the selected cultivars resulted in the accumulation of a high percentage of delphinidin (up to 95%) and a novel bluish flower color. For more exclusive and dominant accumulation of delphinidin irrespective of the hosts, we down-regulated the endogenous dihydroflavonol 4-reductase (DFR) gene and overexpressed the Irisxhollandica DFR gene in addition to the viola F3'5'H gene in a rose cultivar. The resultant roses exclusively accumulated delphinidin in the petals, and the flowers had blue hues not achieved by hybridization breeding. Moreover, the ability for exclusive accumulation of delphinidin was inherited by the next generations. 相似文献
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Yamamoto E Takashi T Morinaka Y Lin S Kitano H Matsuoka M Ashikari M 《TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik》2007,115(2):187-194
Reproductive barriers are important for the maintenance of species identity. We discovered a reproductive barrier via hybrid
breakdown among the progeny of a cross between the japonica rice cultivar Koshihikari and the indica rice cultivar Habataki. Genetic analysis indicated that the hybrid breakdown is regulated by the interaction of two recessive
genes: hbd2 in Habataki and hbd3 in Koshihikari. Linkage mapping showed that hbd2 is located near the 100 cM region of chromosome 2 in Habataki, whereas hbd3 is located near the 60 cM region of chromosome 11 in Koshihikari. Construction of nearly isogenic lines for hbd2 and Hbd3 (NIL-hbd2 and NIL-Hbd3), as well as a pyramiding line (NIL-hbd2 + Hbd3), confirmed that the hybrid breakdown is induced by the interaction of these two recessive genes. Our results indicate that
these genes are novel for the induction of hybrid breakdown in rice. 相似文献
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Kuroha Takeshi Ashikari Motoyuki 《Molecular breeding : new strategies in plant improvement》2020,40(4):1-13
Molecular Breeding - Low temperature (LT) is a key environmental stress affecting the growth, development, yield, and quality of wheat (Triticum aestivum L.). To better understand the genetic basis... 相似文献
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Bessho‑Uehara Kanako Nugroho Jovano Erris Kondo Hirono Angeles-Shim Rosalyn B. Ashikari Motoyuki 《Journal of plant research》2019,132(4):569-569
Journal of Plant Research - The article Sucrose affects the developmental transition of rhizomes in Oryza longistaminata, written by Kanako Bessho-Uehara, Jovano Erris Nugroho, Hirono Kondo,... 相似文献