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首页> 外文期刊>Journal of Experimental Botany >Insights into the control of metabolism and biomass accumulation in a staple C-4 grass
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Insights into the control of metabolism and biomass accumulation in a staple C-4 grass

机译:在装订C-4草中控制代谢和生物质积累的洞察

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The shikimate pathway is key to the synthesis of aromatic amino acids and many secondary metabolites in plants. Chen et al. (2020) identified the biomass yield 1 (by1) mutant in Sorghum using an ethylmethane sulfonate (EMS) mutagenesis screen. The mutation mapped to an amino acid substitution in the sequence of D-arabinoheptulosonate-7-phosphate synthase (DAHPS)-the enzyme catalysing the first committed step of the shikimate pathway. Reduced DAHPS activity in by1 mutants resulted in severe defects in growth and development, such as reduced height, narrow leaves and stem, and abnormal floral organs, which ultimately led to less biomass and yield production. The by1 mutant reveals novel information regarding the integration of primary and secondary metabolism and how this influences growth and development.
机译:Shikimate途径是植物中芳香族氨基酸的合成和许多次级代谢物的关键。 陈等。 (2020)使用乙基甲烷磺酸盐(EMS)诱变筛网鉴定了高粱中的生物质产率1(BY1)突变体。 在D-亚丙基磺酸盐-7-磷酸二磷酸盐合成酶(DAHPS)序列中映射到氨基酸取代 - 酶催化Shikimate途径的首个承诺步骤。 通过1突变体的DAHPS活性减少导致生长和发育中的严重缺陷,例如减少高度,狭窄的叶子和茎,并且不均匀的花动器官,最终导致生物质和产量产生。 BY1突变体揭示了关于初级和次生新陈代谢的整合以及这种影响的新颖信息以及如何影响生长和发展。

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