Synthesis pathway relationship between starch and fat in Chlorella sp. under nitrogen starvation

WANG Yajie; ZHU Shunni; WANG Zhongming; YUAN Zhenhong

doi:10.11949/j.issn.0438-1157.20141760

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Synthesis pathway relationship between starch and fat in Chlorella sp. under nitrogen starvation

更新时间：2025-12-10

- Synthesis pathway relationship between starch and fat in Chlorella sp. under nitrogen starvation
- CIESC Journal Issue 6, Pages: 2189-2195(2015)
- 作者机构：
  
  1. 中国科学院广州能源研究所, 中国科学院可再生能源与天然气水合物重点实验室,广东,广州,510640
  2. 中国科学院大学,北京,100039
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20141760
  CLC： 93TK6
- Online First：16 March 2015，
  
  Published：16 March 2015
- 稿件说明：
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WANG Yajie, ZHU Shunni, WANG Zhongming, et al. Synthesis pathway relationship between starch and fat in Chlorella sp. under nitrogen starvation[J]. CIESC Journal, 2015, (6): 2189-2195.
DOI：

WANG Yajie, ZHU Shunni, WANG Zhongming, et al. Synthesis pathway relationship between starch and fat in Chlorella sp. under nitrogen starvation[J]. CIESC Journal, 2015, (6): 2189-2195. DOI： 10.11949/j.issn.0438-1157.20141760.

摘要

绿藻特别是小球藻细胞存在两大储碳代谢物

脂肪(TAG)和淀粉

且二者的合成享有共同的前体物质。本实验以小球藻Chlorella sp.为研究对象

在氮胁迫的条件下

抑制淀粉合成途径的关键酶和脂肪合成途径的关键酶

通过对比淀粉及脂肪的积累情况来探究两条代谢途径之间的关系。实验结果显示:加入5 mmol·L-1 Pi明显抑制了淀粉合成途径

导致淀粉含量降低

脂肪酸浓度有所增加

单位细胞脂肪酸无显著影响。加入40 μ mol·L-1稀禾定在第6 d表现出对脂肪的抑制

淀粉浓度降低

单位细胞淀粉含量并无显著影响。

Abstract

Triacylglycerol (TAG) and starch

as the two main energy storage products in green microalgae

especially the Chlorella sp.

share the same synthesis precursor in its metabolisim system. This research aimed at the key enzymes in inhibiting starch and TAG synthesis

using Chlorella sp. as the object under nitrogen starvation. To investigate the relationship between the two metabolism pathways

comparison of TAG and starch accumulation was conducted. The starch synthesis way was significantly inhibited when 5 mmol·L-1 Pi was added

resulting in reduced starch content and increased fatty acids concentration. While

fatty acids content per cell unit was not obviously influenced. In addition

40 μmol·L-1 of sethoxydim also showed starch inhibition after it had been introduced for 6 days. In this situation

starch concentration was reduced but unit cell starch content was not significantly changed.

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