12
The Transcriptome in Landoltia
punctata
Yang Fang, Anping Du, Li Tan, Kaize He, Yanling Jin,
Yanqiang Ding, Lin Guo and Hai Zhao
Abstract
Research on Lemnaceae (duckweeds) is hot
spot recently due to its application potential in
bioenergy production and phytoremediation.
Among the five genera of duckweed, Landoltia punctata has great potential in starch
production and heavy metal bio-extraction.
Although starch accumulation and heavy
metal absorption by L. punctata have been
studied at biochemical and physiological
levels for many years, the underlying mechanism has not been subjected to omics analysis until recently. Transcriptomics plays an
important role in understanding gene expression regulation as response to changing environment. Several studies have been carried out
to investigate the transcriptomic expression
profiles of L. punctata to illustrate the mechanisms of sugar high starch content biosynthesis, cadmium hyperaccumulation, and
flavonoids biosynthesis. Here, we reviewed
the progress in transcriptome analysis of
L. punctata to set framework and give the
readers insights into the current status and
future perspectives in researches and application potential of L. punctata.
12.1 Introduction
Lemnaceae (duckweed) is the smallest and
fastest-growing aquatic flowering monocotyledonous plant in the world. It spreads a broad
range of climates with 5 genera (Spirodela,
Landoltia, Lemna, Wolffiella, and Wolffia),
comprising 37 species around the world (Cao
et al. 2014). It is able to reach a very high biomass yield (55 tons/ha/year dry weight) due to its
asexual reproduction and rapid propagation
(Zhao et al. 2012). Duckweed has been gained
increasing attention due to its application potential in starch production, protein production, and
phytoremediation.
Genus Landoltia is one of the widely distributed and practically applied duckweeds. It
consists of one species, namely Landoltia punctata. Previously, L. punctata was a member of
genus Spirodela, with old nomenclatures of
Spirodela oligorrhiza and Spirodela punctata
(Sree et al. 2016). It was recognized as a new
genus since 1999 by Les. This generic name
Y. Fang Á A. Du Á L. Tan Á K. He Á Y. Jin Á Y. Ding Á
L. Guo Á H. Zhao (&)
Key Laboratory of Environmental and Applied
Microbiology, Chengdu Institute of Biology,
Chinese Academy of Sciences, Chengdu 610041,
China
e-mail: zhaohai@cib.ac.cn
Y. Fang Á A. Du Á L. Tan Á K. He Á Y. Jin Á Y. Ding Á
L. Guo Á H. Zhao
Environmental Microbiology Key Laboratory of
Sichuan Province, Chengdu 610041, China
Y. Ding
University of Chinese Academy of Sciences, Beijing
100049, China
© Springer Nature Switzerland AG 2020
X. H. Cao et al. (eds.), The Duckweed Genomes, Compendium of Plant Genomes,
https://doi.org/10.1007/978-3-030-11045-1_12
125
The Transcriptome in Landoltia
punctata
Yang Fang, Anping Du, Li Tan, Kaize He, Yanling Jin,
Yanqiang Ding, Lin Guo and Hai Zhao
Abstract
Research on Lemnaceae (duckweeds) is hot
spot recently due to its application potential in
bioenergy production and phytoremediation.
Among the five genera of duckweed, Landoltia punctata has great potential in starch
production and heavy metal bio-extraction.
Although starch accumulation and heavy
metal absorption by L. punctata have been
studied at biochemical and physiological
levels for many years, the underlying mechanism has not been subjected to omics analysis until recently. Transcriptomics plays an
important role in understanding gene expression regulation as response to changing environment. Several studies have been carried out
to investigate the transcriptomic expression
profiles of L. punctata to illustrate the mechanisms of sugar high starch content biosynthesis, cadmium hyperaccumulation, and
flavonoids biosynthesis. Here, we reviewed
the progress in transcriptome analysis of
L. punctata to set framework and give the
readers insights into the current status and
future perspectives in researches and application potential of L. punctata.
12.1 Introduction
Lemnaceae (duckweed) is the smallest and
fastest-growing aquatic flowering monocotyledonous plant in the world. It spreads a broad
range of climates with 5 genera (Spirodela,
Landoltia, Lemna, Wolffiella, and Wolffia),
comprising 37 species around the world (Cao
et al. 2014). It is able to reach a very high biomass yield (55 tons/ha/year dry weight) due to its
asexual reproduction and rapid propagation
(Zhao et al. 2012). Duckweed has been gained
increasing attention due to its application potential in starch production, protein production, and
phytoremediation.
Genus Landoltia is one of the widely distributed and practically applied duckweeds. It
consists of one species, namely Landoltia punctata. Previously, L. punctata was a member of
genus Spirodela, with old nomenclatures of
Spirodela oligorrhiza and Spirodela punctata
(Sree et al. 2016). It was recognized as a new
genus since 1999 by Les. This generic name
Y. Fang Á A. Du Á L. Tan Á K. He Á Y. Jin Á Y. Ding Á
L. Guo Á H. Zhao (&)
Key Laboratory of Environmental and Applied
Microbiology, Chengdu Institute of Biology,
Chinese Academy of Sciences, Chengdu 610041,
China
e-mail: zhaohai@cib.ac.cn
Y. Fang Á A. Du Á L. Tan Á K. He Á Y. Jin Á Y. Ding Á
L. Guo Á H. Zhao
Environmental Microbiology Key Laboratory of
Sichuan Province, Chengdu 610041, China
Y. Ding
University of Chinese Academy of Sciences, Beijing
100049, China
© Springer Nature Switzerland AG 2020
X. H. Cao et al. (eds.), The Duckweed Genomes, Compendium of Plant Genomes,
https://doi.org/10.1007/978-3-030-11045-1_12
125