Improving biomass and starch accumulation of bioenergy crop duckweed (Landoltia punctata) by abscisic acid application

Abstract Duckweed is a valuable feedstock for bioethanol production due to its high biomass and starch accumulation. In our preliminary experiment, we found that abscisic acid (ABA) could simultaneously increase starch and biomass accumulation of duckweed, but the mechanisms are still unclear. The r...

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Autores principales:	Yang Liu, Xiaoyi Chen, Xinhui Wang, Yang Fang, Mengjun Huang, Ling Guo, Yin Zhang, Hai Zhao
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b06d8b99c6214f9787d59ba919a64407
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spelling	oai:doaj.org-article:b06d8b99c6214f9787d59ba919a644072021-12-02T15:08:43ZImproving biomass and starch accumulation of bioenergy crop duckweed (Landoltia punctata) by abscisic acid application10.1038/s41598-018-27944-72045-2322https://doaj.org/article/b06d8b99c6214f9787d59ba919a644072018-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-27944-7https://doaj.org/toc/2045-2322Abstract Duckweed is a valuable feedstock for bioethanol production due to its high biomass and starch accumulation. In our preliminary experiment, we found that abscisic acid (ABA) could simultaneously increase starch and biomass accumulation of duckweed, but the mechanisms are still unclear. The results showed that the biomass production of duckweed reached up to 59.70 and 63.93 g m−2 in 6 days, respectively, with an increase of 7% (P < 0.05) compared to the control. The starch percentage increased from 2.29% up to 46.18% after 14 days of treatment, with a total of starch level 2.6-fold higher than that of the control. Moreover, the level of endogenous ABA, zeatin-riboside (ZR) and indole-3-acetic acid (IAA) increased, while gibberellins (GAs) decreased. Notably, ABA content in treated samples reached 336.5 mg/kg (fresh weight), which was 7.5-fold greater than that of the control. Importantly, the enzyme activities involved in starch biosynthesis increased while those catalyzing starch degradation decreased after ABA application. Taken together, these results indicated that ABA can promote biomass and starch accumulation by regulating endogenous hormone levels and the activity of starch metabolism related key enzymes. These results will provide an operable method for high starch accumulation in duckweed for biofuels production.Yang LiuXiaoyi ChenXinhui WangYang FangMengjun HuangLing GuoYin ZhangHai ZhaoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yang Liu Xiaoyi Chen Xinhui Wang Yang Fang Mengjun Huang Ling Guo Yin Zhang Hai Zhao Improving biomass and starch accumulation of bioenergy crop duckweed (Landoltia punctata) by abscisic acid application
description	Abstract Duckweed is a valuable feedstock for bioethanol production due to its high biomass and starch accumulation. In our preliminary experiment, we found that abscisic acid (ABA) could simultaneously increase starch and biomass accumulation of duckweed, but the mechanisms are still unclear. The results showed that the biomass production of duckweed reached up to 59.70 and 63.93 g m−2 in 6 days, respectively, with an increase of 7% (P < 0.05) compared to the control. The starch percentage increased from 2.29% up to 46.18% after 14 days of treatment, with a total of starch level 2.6-fold higher than that of the control. Moreover, the level of endogenous ABA, zeatin-riboside (ZR) and indole-3-acetic acid (IAA) increased, while gibberellins (GAs) decreased. Notably, ABA content in treated samples reached 336.5 mg/kg (fresh weight), which was 7.5-fold greater than that of the control. Importantly, the enzyme activities involved in starch biosynthesis increased while those catalyzing starch degradation decreased after ABA application. Taken together, these results indicated that ABA can promote biomass and starch accumulation by regulating endogenous hormone levels and the activity of starch metabolism related key enzymes. These results will provide an operable method for high starch accumulation in duckweed for biofuels production.
format	article
author	Yang Liu Xiaoyi Chen Xinhui Wang Yang Fang Mengjun Huang Ling Guo Yin Zhang Hai Zhao
author_facet	Yang Liu Xiaoyi Chen Xinhui Wang Yang Fang Mengjun Huang Ling Guo Yin Zhang Hai Zhao
author_sort	Yang Liu
title	Improving biomass and starch accumulation of bioenergy crop duckweed (Landoltia punctata) by abscisic acid application
title_short	Improving biomass and starch accumulation of bioenergy crop duckweed (Landoltia punctata) by abscisic acid application
title_full	Improving biomass and starch accumulation of bioenergy crop duckweed (Landoltia punctata) by abscisic acid application
title_fullStr	Improving biomass and starch accumulation of bioenergy crop duckweed (Landoltia punctata) by abscisic acid application
title_full_unstemmed	Improving biomass and starch accumulation of bioenergy crop duckweed (Landoltia punctata) by abscisic acid application
title_sort	improving biomass and starch accumulation of bioenergy crop duckweed (landoltia punctata) by abscisic acid application
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/b06d8b99c6214f9787d59ba919a64407
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Improving biomass and starch accumulation of bioenergy crop duckweed (Landoltia punctata) by abscisic acid application

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