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RESEARCH On February 4, 2022, the international botany journal "New Phytologist" (New Phytologist) published online research from the Center for Excellence in Molecular Plant Science of the Chinese Academy of Sciences and the National Key Experiment of Agricultural Genomics, Shenzhen BGI Institute of Life Sciences.
The research paper titled "The genome of Hippophae rhamnoides provides insights into a conserved molecular mechanism in actinorhizal and rhizobial symbiosis", co-authored by the Institute of Forestry Science, Jinzhong City, Shanxi and other units
.
This study assembled a chromosome-level reference genome of sea buckthorn to explore the biological mechanism of nitrogen fixation in Actinomyces sea buckthorn
.
Research Background｜Research BackgroundSome plants of the order Leguminosae, Rosaceae, Cucurbita and Fagaceae can symbiotically fix nitrogen with Rhizobium or Actinomycetes, and the molecular mechanism of symbiotic nitrogen fixation between legumes and Rhizobium has been deeply studied
.
At present, there is no good research model plant for symbiotic nitrogen fixation by actinomycetes, so there are few studies on the mechanism of symbiotic nitrogen fixation by actinomycetes, and the progress is slow
.
Sea buckthorn is a deciduous shrub of the genus Sea buckthorn in the family Elaeaceae.
It is suitable for the barren areas of North China and Northwest China where water and fertilizer are scarce.
It is a hero for windbreak and sand fixation.
The most important thing is that its roots and actinomycetes symbiotically fix nitrogen; its fruits are rich in vitamin C and Active substances such as flavonoids are the raw material suppliers of healthy drinks and have important ecological and economic value
.
Seabuckthorn fruit research process｜Research Process This study uses seabuckthorn collected from Shanxi as material to assemble a chromosome-level reference genome and clarify the evolutionary relationship of the controversial nitrogen-fixing branch plants
.
Seabuckthorn and its close relative, Dongzao, diverged about 70-80 million years ago; after the two parted ways, seabuckthorn experienced another unique whole-genome duplication event
.
The research team analyzed the microbial diversity of the nodule samples of sea buckthorn, and determined the actinomycete Frankia as the main source of nodule symbiotic microorganisms; and sequenced the transcriptomes of sea buckthorn nodules and roots and other tissues, and compared the sea buckthorn nodule symbiosis induction with alfalfa.
Among the symbiosis-related genes of root nodule nitrogen fixation, it was found that most of the symbiosis-related genes showed orthologous relationship, such as NIN, RPG, NSP2, DMI2, etc.
, indicating the conservation of legume-rhizobia symbiosis and actinomycete nodule symbiosis
.
The reference genome of sea buckthorn provides a scientific basis for studying the molecular biology of sea buckthorn, plant-actinomycete symbiosis and genetic improvement of sea buckthorn
.
The study also used information such as the genome and transcriptome of sea buckthorn to identify genes related to the vitamin C synthesis pathway, and map the metabolic pathway of vitamin C synthesis in sea buckthorn
.
Information about seabuckthorn root nodule slices｜Related Information Wu Zefeng, postdoctoral fellow of the Center for Excellence in Molecular Plant Science, Chinese Academy of Sciences, Chen Hongyun, State Key Laboratory of Agricultural Genomics, Shenzhen BGI Research Institute, and Pan Ya, Jinzhong Institute of Forestry Sciences are the co-first authors of the paper , Researcher Wang Ertao of the Center for Excellence in Molecular Plant Science, Chinese Academy of Sciences and Liu Huan, researcher of the State Key Laboratory of Agricultural Genomics, Shenzhen BGI Life Sciences Research Institute, are the co-corresponding authors of the paper
.
The research was funded by the National Key R&D Program, the Chinese Academy of Sciences, and the National Natural Science Foundation of China
.
Researcher Wang Ertao is engaged in research on plant-microbe symbiosis and related hormone signal transduction.
Plant biotechnology Pbj exchange group In order to more effectively help the majority of scientific researchers to obtain relevant information, Plant Biotechnology Pbj has established a WeChat group for Plant Biotechnology Journal submissions and literature.
Relevant questions, public account content and public account submission questions will be answered in the group, and academic exchanges and collision of ideas are encouraged in the group
.
In order to ensure a good discussion environment in the group, please add Xiaobian WeChat first, scan the QR code to add, and then we will invite you to join the group in time
.
Tips: When adding Xiaobian WeChat and after joining the group, please be sure to note the school or unit + name, PI at the end, and we will invite you to join the PI group
.
The research paper titled "The genome of Hippophae rhamnoides provides insights into a conserved molecular mechanism in actinorhizal and rhizobial symbiosis", co-authored by the Institute of Forestry Science, Jinzhong City, Shanxi and other units
.
This study assembled a chromosome-level reference genome of sea buckthorn to explore the biological mechanism of nitrogen fixation in Actinomyces sea buckthorn
.
Research Background｜Research BackgroundSome plants of the order Leguminosae, Rosaceae, Cucurbita and Fagaceae can symbiotically fix nitrogen with Rhizobium or Actinomycetes, and the molecular mechanism of symbiotic nitrogen fixation between legumes and Rhizobium has been deeply studied
.
At present, there is no good research model plant for symbiotic nitrogen fixation by actinomycetes, so there are few studies on the mechanism of symbiotic nitrogen fixation by actinomycetes, and the progress is slow
.
Sea buckthorn is a deciduous shrub of the genus Sea buckthorn in the family Elaeaceae.
It is suitable for the barren areas of North China and Northwest China where water and fertilizer are scarce.
It is a hero for windbreak and sand fixation.
The most important thing is that its roots and actinomycetes symbiotically fix nitrogen; its fruits are rich in vitamin C and Active substances such as flavonoids are the raw material suppliers of healthy drinks and have important ecological and economic value
.
Seabuckthorn fruit research process｜Research Process This study uses seabuckthorn collected from Shanxi as material to assemble a chromosome-level reference genome and clarify the evolutionary relationship of the controversial nitrogen-fixing branch plants
.
Seabuckthorn and its close relative, Dongzao, diverged about 70-80 million years ago; after the two parted ways, seabuckthorn experienced another unique whole-genome duplication event
.
The research team analyzed the microbial diversity of the nodule samples of sea buckthorn, and determined the actinomycete Frankia as the main source of nodule symbiotic microorganisms; and sequenced the transcriptomes of sea buckthorn nodules and roots and other tissues, and compared the sea buckthorn nodule symbiosis induction with alfalfa.
Among the symbiosis-related genes of root nodule nitrogen fixation, it was found that most of the symbiosis-related genes showed orthologous relationship, such as NIN, RPG, NSP2, DMI2, etc.
, indicating the conservation of legume-rhizobia symbiosis and actinomycete nodule symbiosis
.
The reference genome of sea buckthorn provides a scientific basis for studying the molecular biology of sea buckthorn, plant-actinomycete symbiosis and genetic improvement of sea buckthorn
.
The study also used information such as the genome and transcriptome of sea buckthorn to identify genes related to the vitamin C synthesis pathway, and map the metabolic pathway of vitamin C synthesis in sea buckthorn
.
Information about seabuckthorn root nodule slices｜Related Information Wu Zefeng, postdoctoral fellow of the Center for Excellence in Molecular Plant Science, Chinese Academy of Sciences, Chen Hongyun, State Key Laboratory of Agricultural Genomics, Shenzhen BGI Research Institute, and Pan Ya, Jinzhong Institute of Forestry Sciences are the co-first authors of the paper , Researcher Wang Ertao of the Center for Excellence in Molecular Plant Science, Chinese Academy of Sciences and Liu Huan, researcher of the State Key Laboratory of Agricultural Genomics, Shenzhen BGI Life Sciences Research Institute, are the co-corresponding authors of the paper
.
The research was funded by the National Key R&D Program, the Chinese Academy of Sciences, and the National Natural Science Foundation of China
.
Researcher Wang Ertao is engaged in research on plant-microbe symbiosis and related hormone signal transduction.
Plant biotechnology Pbj exchange group In order to more effectively help the majority of scientific researchers to obtain relevant information, Plant Biotechnology Pbj has established a WeChat group for Plant Biotechnology Journal submissions and literature.
Relevant questions, public account content and public account submission questions will be answered in the group, and academic exchanges and collision of ideas are encouraged in the group
.
In order to ensure a good discussion environment in the group, please add Xiaobian WeChat first, scan the QR code to add, and then we will invite you to join the group in time
.
Tips: When adding Xiaobian WeChat and after joining the group, please be sure to note the school or unit + name, PI at the end, and we will invite you to join the PI group
.
