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molecular mechanisms for the photoperiodic regulation of flowering in soybean

Journal of Integrative Plant Biology 2021年第6期63卷 981-994页

作者： Xiaoya Lin Baohui Liu James LWeller Jun Abe Fanjiang Kong Innovative Center of molecular Genetics and Evolution School of Life SciencesGuangzhou UniversityGuangzhou 510642China Key Laboratory of Soybean molecular Design breeding Northeast Institute of Geography and AgroecologyChinese Academy of SciencesHarbin 150081China School of Natural Sciences University of TasmaniaHobartTasmania 7001Australia Research Faculty of Agriculture Hokkaido UniversitySapporo 060-8589Japan

Photoperiodic flowering is one of the most important factors affecting regional adaptation and yield in soybean(Glycine max). Plant adaptation to long-day conditions at higher latitudes requires early flowering and a reduction or loss of photoperiod sensitivity;adaptation to short-day conditions at lower latitudes involves delayed flowering, which prolongs vegetative growth for maximum yield potential. Due to the influence of numerous major loci and quantitative trait loci(QTLs), soybean has broad adaptability across latitudes. Forward genetic approaches have uncovered the molecular basis for several of these major maturity genes and QTLs. Moreover, the molecular characterization of orthologs of Arabidopsis thaliana flowering genes has enriched our understanding of the photoperiodic flowering pathway in soybean. Building on early insights into the importance of the photoreceptor phytochrome A, several circadian clock components have been integrated into the genetic network controlling flowering in soybean: E1, a repressor of FLOWERING LOCUS T orthologs, plays a central role in this network. Here, we provide an overview of recent progress in elucidating photoperiodic flowering in soybean, how it contributes to our fundamental understanding of flowering time control, and how this information could be used for molecular design and breeding of high-yielding soybean cultivars.

关键词： molecular-designed breeding photoperiodic flowering soybean

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