V2EX c3 plant

C3 Plant

Definition|释义

C3植物:采用C3光合作用途径(卡尔文循环)固定二氧化碳的植物类型;其最初稳定产物是三碳化合物(如3-磷酸甘油酸)。大多数温带作物(如小麦、水稻、大豆)属于C3植物。它们在高温、干旱条件下更容易发生光呼吸,从而降低光合效率。(该词在植物生理学中很常见;也存在其他更细分的分类讨论。)

Examples|例句

C3 plants usually grow well in cool, moist conditions.
C3植物通常在凉爽、湿润的环境中生长良好。

Because photorespiration increases at high temperatures, many C3 plants lose efficiency during hot summers unless water is plentiful.
由于高温会增强光呼吸,许多C3植物在炎热夏季会降低光合效率,除非水分充足。

Pronunciation|发音

/si θri plnt/

Etymology|词源

C3”中的 C 指“carbon(碳)”,3 指“第一个稳定产物含有3个碳原子”。这一命名与对光合碳同化途径的研究相关:在卡尔文循环(Calvin cycle)的早期研究中,人们发现CO固定后形成的关键初产物为三碳化合物,因此称为 C3 pathway,相应植物称 C3 plants

Related Words|相关词

Literary Works|文学与著作例证

  • Plant Physiology(Taiz & Zeiger 等):在光合类型与环境适应章节中系统讨论 C3 plants
  • Biochemistry & Molecular Biology of Plants(Buchanan, Gruissem, Jones 等):在碳同化与卡尔文循环部分频繁使用 C3 plant 概念。
  • Calvin, Benson & Bassham 的经典论文与相关综述(20世纪中期关于卡尔文循环的研究):在区分 C3 与其他固定途径的语境中出现该术语。
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