Home / News / Climate Environment and Science / Modulating pathogen functions control sheath blight disease: study
Research News

Modulating pathogen functions control sheath blight disease: study

India: Second largest producer and consumer of rice

New Delhi, Oct. 15: Rice is a staple food all over the world and India is the second-largest producer and consumer of rice at the global level. Production of rice in India is limited by several biotic and abiotic factors.

Sheath blight disease caused by a necrotrophic fungal pathogen (Rhizoctonia solani) is a big threat to rice crops which causes millions of tons of rice lost due to this disease every year.

Scientists are constantly working to find new ways to control various crop diseases.

A recent study, conducted by the researchers at the New Delhi based National Institute of Plant Genome Research (NIPGR), has discovered that modulating the functions of the pathogen responsible for sheath blight, could be a game-changer in the fight against the menacing rice disease.

It is an important study towards understanding the sheath blight pathogen of rice, tomato and many other crops. Also, it will help in developing a strategy to control the disease, say researchers at NIPGR.

“We discovered that silencing of one of the transcription factors i.e. C2H2 Zn finger transcription factor (RS_CRZ1), significantly compromises the pathogenesis of R. solani in tomato. The disease was significantly reduced in the RS_CRZ1 silenced plants, compared to the wild type plants. Our data suggest that the RS_CRZ1 enables the pathogen to tackle hostile environment of the host faced during disease establishment process” says Dr. Gopaljee Jha, Scientist, NIPGR. In molecular biology, a transcription factor is a protein that controls the rate of transcription of genetic information from DNA to messenger RNA, by binding to a specific DNA sequence.

“Unravelling the pathogenicity mechanism is important for the development of a suitable control strategy. However, the method to carry out gene-functions analysis in Rhizoctonia solani is not available. In our recently published study, we have established suitable methodologies to downregulate the expression of R. solani genes and study their involvement during disease establishment in tomato. Our method is based upon host-induced gene silencing and dsRNA based gene silencing, wherein through RNAi strategy we silence the fungal genes during infection process”, explained Dr. Jha.

“Our study provides suitable strategies to silence the pathogenicity determinant of R. solani during the infection process and prevent the pathogen to cause disease in plants. This further highlights that adoption of these strategies will be helpful in the control of sheath blight disease of rice and various other diseases caused by Rhizoctonia solani, in other crops”, He added.

Sheath blight is predominantly controlled by the spray of fungicides and we end-up spending profusely on fungicides, which add to the cost of rice production. Also, the residual level of fungicides adds negative trade value, as, beyond certain permissible level, the rice is considered not suitable for international trade.

Moreover, besides rice, the pathogen is known to cause disease on a wide range of agriculturally important crops, including tomato. Hence, the development of environment-friendly and sustainable disease control measures are needed to control this pathogen, say, scientists.

(India Science Wire)

Climate Environment and Science
Lok Sabha Elections 2019
Social Media
Top headlines of the day
United States
United States

हमें गूगल न्यूज पर फॉलो करें. ट्विटर पर फॉलो करें. वाट्सएप पर संदेश पाएं. हस्तक्षेप की आर्थिक मदद करें

Enter your email address:

Delivered by FeedBurner

Sharing is caring!

About hastakshep news

Check Also

breaking news today Top Headlines

#Breaking: Latest News |Today’s big news headlines | 28 June 2022 news

Big news of 28 June 2022, Top 10 headlines 28 June 2022, Breaking news of …

This site uses Akismet to reduce spam. Learn how your comment data is processed.