Ca2+ Sensor-mediated ROS Scavenging Suppresses Rice Immunity And Is Exploited By A Fungal Effector

Abstract

Plant immunity is activated upon pathogen perception, and when it is constitutively active, it usually affects growth and yield. How plants fine-tune immune homeostasis in their natural habitat remains elusive. Here, we identified a conserved immunosuppressive network that coordinates immune homeostasis in cereals, centered on the Ca²⁺ sensor, and rice resistance to disease (ROD1).ROD1 promotes reactive oxygen species (ROS) scavenging by stimulating peroxidase activity, and its protein stability is regulated by ubiquitination. Disruption of ROD1 confers resistance to a wide range of pathogens, and rice with an agroecological-specific distribution of the natural ROD1 allele prevalent in the specific distribution of the natural ROD1 allele prevalent in Indica rice enhances resistance without affecting yield. The fungal effector AVRPI -t mimics ROD1 structurally and activates the same ROS clearance cascade to suppress host immunity and promote virulence. Thus, we reveal a molecular framework adopted by the host and pathogen that integrates Ca²⁺ sensing and ROS homeostasis to suppress plant immunity, which provides a principle for breeding disease-resistant, high-yielding crops.

Keywords

Immunity; Ca ²⁺; Cistanche benefits.

Click here to get the effects of Cistanche on improving immunity.

Introduction

we conducted a long-term study to track rice susceptibility to genetic resistance to disease1 (ROD1).ROD1 encodes a C2 structural domain Ca²⁺ sensor that acts as a global regulator of immunity. We found that ROD1 promotes H₂O₂ degradation by activating the peroxidase CatB. the stability of ROD1 is regulated by a pair of E3 ubiquitin ligases, RIP1 and APIP6. loss of function of ROD1 results in robust broad-spectrum resistance to a variety of bacterial and fungal pathogens. rodd1 has a six-stranded antiparallel b-sheet structure that is also found in the fungal blast effector AVRPI - t. ROD1 and AVRPI -t share the same protein degradation and ROS elimination cascade, supporting a model of fungal effectors exploiting host protein-mediated immune regulation. We identified a naturally occurring, locally adapted ROD1 allele that confers higher basal resistance without loss of crop yield, highlighting the importance of this factor in balancing immunity and growth. Thus, our study reveals a previously unrecognized mechanism by which plant and pathogen factors suppress plant immune responses through the same cascade.

the effects of Cistanche on Immunity

Cistanche is an herb found in the desert regions of China and Mongolia that has been used for centuries as a traditional medicine to boost immunity and improve overall health. Recent studies have shown that Cistanche has many health benefits, including improving the immune system’s strength and ability to fight off infections.

One of the key components of Cistanche is echinacoside, which has been shown to boost the production of white blood cells, also known as leukocytes. White blood cells are responsible for detecting and destroying harmful pathogens, such as viruses and bacteria, that enter the body. They also play a crucial role in detecting and destroying cancer cells.

Research has also shown that Cistanche can help regulate the immune system by increasing the production of cytokines, which are proteins that act as messengers between cells. These cytokines play a crucial role in coordinating the immune response and ensuring that immune cells are activated when they are needed.

Cistanche supplements

Moreover, Cistanche acts as an adaptogen, which means that it can help the body adapt to stress and environmental changes. This is important because prolonged stress can weaken the immune system, making it more susceptible to infections and diseases. Cistanche can help reduce stress levels and promote relaxation, which can ultimately lead to better immune function.

In addition to boosting immunity, Cistanche also has antiviral and antibacterial properties. Studies have shown that it can be effective against numerous types of bacteria, such as Staphylococcus aureus, Escherichia coli, and Salmonella typhimurium. Cistanche also has antifungal properties and can be effective against Candida albicans, a common fungal infection.

Meanwhile, studies have also shown that Cistanche can protect the liver from damage caused by toxins and drugs. The liver plays a crucial role in detoxifying the body, and its health is critical to immune function. Therefore, Cistanche could help maintain overall health by keeping the liver healthy.

Clinical studies on Cistanche have also demonstrated the effectiveness of the herb in treating chronic diseases such as Alzheimer’s disease and cardiovascular disease. These chronic diseases are associated with inflammation, and Cistanche has been shown to be a potent anti-inflammatory agent. Inflammation is an important part of the immune response that helps to protect the body from infections and injury, but when it is prolonged, it can lead to chronic diseases. Cistanche can help regulate the immune response and prevent inflammation from becoming chronic, which could ultimately help prevent these diseases.

In conclusion, Cistanche is an herb with many health benefits, including boosting the immune system’s strength and ability to fight off infections. Cistanche has been shown to increase the production of white blood cells, regulate the immune system, act as an adaptogen, and protect the liver from damage caused by toxins and drugs. Moreover, Cistanche has antiviral and antibacterial properties and can be effective against numerous types of bacteria and fungi. Cistanche also has anti-inflammatory properties and can help prevent chronic diseases such as Alzheimer’s disease and cardiovascular disease. Therefore, Cistanche is an excellent way to improve overall health and protect against infections and chronic diseases.

Cistanche pills

How to use Cistanche Extract to Improve Immunity?

Cistanche is an herb that has been used for centuries in traditional Chinese medicine to improve immunity and overall health. It is known for its ability to strengthen the immune system and protect against infections and diseases. Here are some ways to use Cistanche to improve immunity:

Take it as a supplement: Cistanche is available in supplement forms, such as capsules or powders. It is recommended to take 1000-2000 milligrams of Cistanche extract per day to experience its immune-boosting effects. It is important to consult a healthcare professional before taking any supplements, to ensure safety and effectiveness.

Add it to your diet: Cistanche can be added to your diet in various ways, such as brewing it into tea, making it into a tincture, or adding it to soups and smoothies. Cistanche pairs well with other herbs such as black beans, goji berries, and Reishi mushrooms. Brewing Cistanche into tea is a popular way to consume it. Simply add a few pieces of Cistanche to hot water and let it steep for several minutes before drinking.

Use it as an ingredient in skincare: Cistanche can also be used topically as an ingredient in skincare products. Research has shown that Cistanche has anti-aging properties and can help protect the skin from damage caused by free radicals. Adding Cistanche extract to your skincare routine can help reduce the signs of aging and promote healthy, glowing skin.

Combine it with other immune-boosting herbs: Cistanche can be combined with other immune-boosting herbs to create a potent combination. Herbal blends such as Cistanche and Astragalus, or Cistanche and Reishi mushroom, can help enhance the benefits of Cistanche and provide additional support for the immune system.

Exercise and maintain healthy habits: While Cistanche can help boost the immune system, it is also important to exercise regularly and maintain healthy habits such as eating a balanced diet and getting enough sleep. Exercise has been shown to improve immune function and reduce the risk of chronic diseases. Additionally, stress and lack of sleep can weaken the immune system, so it is important to practice stress-reducing techniques, such as yoga or meditation, and to get at least 7-8 hours of sleep each night.

Standardized Cistanche

In conclusion, Cistanche is a potent herb with numerous health benefits, including its ability to boost immunity and protect against infections and diseases. It can be consumed as a supplement, added to your diet, used as an ingredient in skincare, combined with other immune-boosting herbs, and should be complemented with regular exercise and healthy habits. As always, it is essential to consult with a healthcare professional before adding any new supplements or herbs to your routine.