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Research progress On October 12, 2021, the research team of Wang Ertao, Center of Molecular Plant Excellence, published a titled "A phosphate starvation response-centered network regulates mycorrhizal symbiosis" in the top international academic journal "Cell".
Symbiosis)” cover paper
.
The transcriptional regulatory network of rice-arbuscular mycorrhizal symbiosis was drawn for the first time, and it was found that the direct phosphorus absorption pathway (root pathway) and the symbiotic phosphorus absorption pathway (symbiotic pathway) are both uniformly regulated by the plant’s phosphorus signal network.
Root symbiosis field "self-regulation" is an important scientific problem in the troubled field
.
Research background Phosphorus is one of the three essential nutrient elements for plant growth and development.
It is an important component of plants and is widely involved in many enzymatic reactions and cell signal transduction processes in plants
.
In agricultural production, in order to increase the yield of crops, it is currently mainly dependent on the application of a large amount of nitrogen and phosphate fertilizers to increase production, but at the same time it has also caused serious environmental pollution
.
Plants obtain nutrients mainly through two ways: the first is that plant roots absorb nutrients directly from the soil, which is called the direct nutrient absorption pathway; after plants sense the concentration of nutrients such as nitrogen and phosphorus in the soil, they pass through the outer epidermis and root hairs of the roots.
Cells absorb nutrients directly from the soil
.
The second is that plants obtain nutrients from the external environment through symbiosis with mycorrhizal fungi, which is called an indirect nutrient absorption pathway
.
The establishment of symbiosis between plants and arbuscular mycorrhizal fungi occurred at the same time as the evolution of plants from aquatic to terrestrial.
It is the oldest symbiotic relationship in nature and one of the key events for plants to adapt to the terrestrial environment
.
Arbuscular mycorrhizal symbiosis is the most common kind of symbiosis, and it is an important way for plants to efficiently obtain nutrients from the environment.
The phosphorus element provided by arbuscular mycorrhizal fungi to the host plant accounts for more than 70% of the total phosphorus obtained by the host plant
.
The research work of Wang Ertao's research team from the Center for Excellence in Molecular Plant Science of the Chinese Academy of Sciences published in Science in 2017 showed that in mycorrhizal symbiosis, the host plant provides a carbon source for mycorrhizal fungi in the form of fatty acids, and mycorrhizal fungi help the host Plants increase the absorption of nutrients such as phosphorus
.
Research over the past 50 years has found that plants regulate their symbiosis with arbuscular mycorrhizal fungi based on their own phosphorus nutritional status.
Researchers call this the "self-regulation" nature of mycorrhizal symbiosis.
, But its regulation mechanism is unknown
.
The research process of the arbuscular structure of mycorrhizal symbiosis was studied using the promoter of mycorrhizal symbiosis-related genes in rice as bait, and the rice transcription factor library was screened.
A transcription factor regulating arbuscular mycorrhizal symbiosis
.
Surprisingly, the phosphorus-responsive transcription factor OsPHR1/2/3 is at the core of the mycorrhizal symbiosis transcriptional regulatory network
.
Further studies have found that PHRs activate the expression of mycorrhizal symbiosis-related genes by combining with P1BS cis-acting elements, and positively regulate arbuscular mycorrhizal symbiosis
.
In the Osphr1/2/3 three mutants, mycorrhizal fungi could not effectively colonize the cortex cells of rice roots, indicating that PHRs are the key regulators of mycorrhizal symbiosis
.
SPX is a receptor for phosphorus.
It inhibits the binding of PHRs to the promoter of the target gene through protein interaction, and inhibits the expression of low-phosphorus-responsive genes
.
Studies have found that SPX1 in rice can inhibit the expression of genes related to OsPHR2 activating mycorrhizal symbiosis
.
The mycorrhizal symbiosis of PHR overexpression plants and SPX deletion mutants is not sensitive to high phosphorus treatment, indicating that high phosphorus inhibits mycorrhizal symbiosis through the PHR-SPX module
.
High phosphorus uses SPX-PHR module to control mycorrhizal symbiosis related information.
In order to obtain a good harvest of food, agricultural production imposes a large amount of phosphorus-containing fertilizers, which seriously pollutes the ecological environment, which is one of the major problems that need to be solved urgently in China's agricultural production
.
By increasing the expression of the PHR gene, it is expected that the direct absorption of phosphorus by rice and the indirect absorption of phosphorus by arbuscular mycorrhizal symbiosis can be achieved, reducing the application of agricultural phosphorus fertilizers, and providing a new solution for the sustainable development of agricultural production
.
Shi Jincai, a postdoctoral fellow at the Center for Excellence in Molecular Plant Science, is the first author, and researcher Wang Ertao is the corresponding author
.
The research was funded by the National Natural Science Foundation of China, the Young Scientists Project of Basic Research of the Chinese Academy of Sciences, the Leading Science and Technology Special Project of the Chinese Academy of Sciences, and the National Key Research and Development Project
.
Researcher Wang Ertao and his team took a group photo to interpret the hot article selection in 2020 1.
The cup is ready! A full paper cup of hot coffee, full of plastic particles.
.
.
2.
Scientists from the United States, Britain and Australia “Natural Medicine” further prove that the new coronavirus is a natural evolution product, or has two origins.
.
.
3.
NEJM: Intermittent fasting is right The impact of health, aging and disease 4.
Heal insomnia within one year! The study found that: to improve sleep, you may only need a heavy blanket.
5.
New Harvard study: Only 12 minutes of vigorous exercise can bring huge metabolic benefits to health.
6.
The first human intervention experiment: in nature.
"Feeling and rolling" for 28 days is enough to improve immunity.
7.
Junk food is "real rubbish"! It takes away telomere length and makes people grow old faster! 8.
Cell puzzle: you can really die if you don't sleep! But the lethal changes do not occur in the brain, but in the intestines.
.
.
9.
The super large-scale study of "Nature Communications": The level of iron in the blood is the key to health and aging! 10.
Unbelievable! Scientists reversed the "permanent" brain damage in animals overnight, and restored the old brain to a young state.
.
.
Symbiosis)” cover paper
.
The transcriptional regulatory network of rice-arbuscular mycorrhizal symbiosis was drawn for the first time, and it was found that the direct phosphorus absorption pathway (root pathway) and the symbiotic phosphorus absorption pathway (symbiotic pathway) are both uniformly regulated by the plant’s phosphorus signal network.
Root symbiosis field "self-regulation" is an important scientific problem in the troubled field
.
Research background Phosphorus is one of the three essential nutrient elements for plant growth and development.
It is an important component of plants and is widely involved in many enzymatic reactions and cell signal transduction processes in plants
.
In agricultural production, in order to increase the yield of crops, it is currently mainly dependent on the application of a large amount of nitrogen and phosphate fertilizers to increase production, but at the same time it has also caused serious environmental pollution
.
Plants obtain nutrients mainly through two ways: the first is that plant roots absorb nutrients directly from the soil, which is called the direct nutrient absorption pathway; after plants sense the concentration of nutrients such as nitrogen and phosphorus in the soil, they pass through the outer epidermis and root hairs of the roots.
Cells absorb nutrients directly from the soil
.
The second is that plants obtain nutrients from the external environment through symbiosis with mycorrhizal fungi, which is called an indirect nutrient absorption pathway
.
The establishment of symbiosis between plants and arbuscular mycorrhizal fungi occurred at the same time as the evolution of plants from aquatic to terrestrial.
It is the oldest symbiotic relationship in nature and one of the key events for plants to adapt to the terrestrial environment
.
Arbuscular mycorrhizal symbiosis is the most common kind of symbiosis, and it is an important way for plants to efficiently obtain nutrients from the environment.
The phosphorus element provided by arbuscular mycorrhizal fungi to the host plant accounts for more than 70% of the total phosphorus obtained by the host plant
.
The research work of Wang Ertao's research team from the Center for Excellence in Molecular Plant Science of the Chinese Academy of Sciences published in Science in 2017 showed that in mycorrhizal symbiosis, the host plant provides a carbon source for mycorrhizal fungi in the form of fatty acids, and mycorrhizal fungi help the host Plants increase the absorption of nutrients such as phosphorus
.
Research over the past 50 years has found that plants regulate their symbiosis with arbuscular mycorrhizal fungi based on their own phosphorus nutritional status.
Researchers call this the "self-regulation" nature of mycorrhizal symbiosis.
, But its regulation mechanism is unknown
.
The research process of the arbuscular structure of mycorrhizal symbiosis was studied using the promoter of mycorrhizal symbiosis-related genes in rice as bait, and the rice transcription factor library was screened.
A transcription factor regulating arbuscular mycorrhizal symbiosis
.
Surprisingly, the phosphorus-responsive transcription factor OsPHR1/2/3 is at the core of the mycorrhizal symbiosis transcriptional regulatory network
.
Further studies have found that PHRs activate the expression of mycorrhizal symbiosis-related genes by combining with P1BS cis-acting elements, and positively regulate arbuscular mycorrhizal symbiosis
.
In the Osphr1/2/3 three mutants, mycorrhizal fungi could not effectively colonize the cortex cells of rice roots, indicating that PHRs are the key regulators of mycorrhizal symbiosis
.
SPX is a receptor for phosphorus.
It inhibits the binding of PHRs to the promoter of the target gene through protein interaction, and inhibits the expression of low-phosphorus-responsive genes
.
Studies have found that SPX1 in rice can inhibit the expression of genes related to OsPHR2 activating mycorrhizal symbiosis
.
The mycorrhizal symbiosis of PHR overexpression plants and SPX deletion mutants is not sensitive to high phosphorus treatment, indicating that high phosphorus inhibits mycorrhizal symbiosis through the PHR-SPX module
.
High phosphorus uses SPX-PHR module to control mycorrhizal symbiosis related information.
In order to obtain a good harvest of food, agricultural production imposes a large amount of phosphorus-containing fertilizers, which seriously pollutes the ecological environment, which is one of the major problems that need to be solved urgently in China's agricultural production
.
By increasing the expression of the PHR gene, it is expected that the direct absorption of phosphorus by rice and the indirect absorption of phosphorus by arbuscular mycorrhizal symbiosis can be achieved, reducing the application of agricultural phosphorus fertilizers, and providing a new solution for the sustainable development of agricultural production
.
Shi Jincai, a postdoctoral fellow at the Center for Excellence in Molecular Plant Science, is the first author, and researcher Wang Ertao is the corresponding author
.
The research was funded by the National Natural Science Foundation of China, the Young Scientists Project of Basic Research of the Chinese Academy of Sciences, the Leading Science and Technology Special Project of the Chinese Academy of Sciences, and the National Key Research and Development Project
.
Researcher Wang Ertao and his team took a group photo to interpret the hot article selection in 2020 1.
The cup is ready! A full paper cup of hot coffee, full of plastic particles.
.
.
2.
Scientists from the United States, Britain and Australia “Natural Medicine” further prove that the new coronavirus is a natural evolution product, or has two origins.
.
.
3.
NEJM: Intermittent fasting is right The impact of health, aging and disease 4.
Heal insomnia within one year! The study found that: to improve sleep, you may only need a heavy blanket.
5.
New Harvard study: Only 12 minutes of vigorous exercise can bring huge metabolic benefits to health.
6.
The first human intervention experiment: in nature.
"Feeling and rolling" for 28 days is enough to improve immunity.
7.
Junk food is "real rubbish"! It takes away telomere length and makes people grow old faster! 8.
Cell puzzle: you can really die if you don't sleep! But the lethal changes do not occur in the brain, but in the intestines.
.
.
9.
The super large-scale study of "Nature Communications": The level of iron in the blood is the key to health and aging! 10.
Unbelievable! Scientists reversed the "permanent" brain damage in animals overnight, and restored the old brain to a young state.
.
.
