不同浓度IAA对浮萍生长及淀粉积累的影响
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

国家自然科学基金(31600261);


Effect of Different Concentrations of IAA on the Growth and Starch Accumulation of Duckweed
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    以新型能源植物浮萍为试材,设置0(对照)、0.001、0.01、0.1、1 和10 μmol/L的IAA处理,通过光照培养室营养液水培试验,研究不同浓度IAA对浮萍生长及淀粉积累的影响。结果表明:(1)低浓度(0.001、0.01和0.1 μmol/L)的IAA可以有效促进浮萍叶绿素含量、净光合速率和干物质的积累,分别比对照显著增加14.7%、10.6%和28.1%,并以0.001 μmol/L IAA处理效果最佳。(2)高浓度(1 和10 μmol/L)IAA可以调节浮萍淀粉的积累,增强淀粉合成关键酶ADPG焦磷酸化酶(AGPase)的活性,淀粉含量和AGPase活性在10 μmol/L的IAA处理下分别比对照显著增加35.0%和14.1%。研究表明,低浓度IAA处理能有效促进浮萍叶绿素的合成和光合作用的进行,从而有利于生物量的积累;高浓度IAA可以通过增强浮萍AGPase的活性来促进淀粉含量和淀粉总量的积累。

    Abstract:

    New energy plant duckweed was used as material, we studied the effects of five different concentration of IAA at 0.001, 0.01, 0.1, 1 and 10 μmol/L (0 μmol/L as control) on the growth and starch accumulation of duckweed. The results showed that: (1)Low concentrations (0.001, 0.01 and 0.1 μmol/L) of IAA could effectively promote the chlorophyll content, net photosynthetic rate and biomass yield of duckweed, which significantly increased by 14.7%, 10.6%, and 28.1% compared with the control group at the concentration of 0.001 μmol/L IAA. (2) High concentrations (1 and 10 μmol/L) of IAA can regulate the starch accumulation and increase the activity of AGPase (ADPglucose pyrophosphorylase), a key enzyme in starch synthesis. As compared to the control, the starch content and AGPase activity were significantly increased by 35.0% and 14.1% at 10 μmol/L IAA treatment, respectively. These results suggest that low concentration of IAA treatment can effectively promote the biosynthesis of chlorophyll and photosynthesis of duckweed, which is conductive to the accumulation of biomass, and high concentration of IAA can promote the starch percentage and total starch accumulation by enhancing the activity of AGPase.

    参考文献
    相似文献
    引证文献
引用本文

陈晓仪,李 锐,张甜甜,等.不同浓度IAA对浮萍生长及淀粉积累的影响[J].西北植物学报,2018,38(9):1722-1726

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2018-10-23
  • 出版日期:

微信公众号二维码

手机版网站二维码