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Rice panicle blast is one of the most serious diseases threatening stable rice production by causing severe damage to rice yields and quality. The disease is easy to occur under low air temperature and frequent heavy rainfall during the heading season of rice. In 2021, a rice panicle blast severely occurred in the Jeonbuk province of Korea. The incidence area of panicle blast accounted for 27.7% of the rice cultivation area of Jeonbuk province in 2021, which was 13.7-times higher than in 2019 and 2.6-times higher than in 2020. This study evaluated the incidence areas of rice panicle blast in each region of Jeonbuk province in 2021. The weather conditions during the heading season of rice, mainly cultivated rice cultivars, and the race diversity of the Jeonbuk isolates were also investigated. It will provide important information for the effective control of the rice panicle blast.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9929167 | PMC |
http://dx.doi.org/10.5423/PPJ.NT.07.2022.0103 | DOI Listing |
Breed Sci
April 2025
Institute of Agrobiological Sciences, NARO, Kan-nondai, Tsukuba, Ibaraki 305-8604, Japan.
Resistance breeding for rice blast is an economic strategy for protecting rice crops against this disease. Genes with nucleotide-binding site leucine-rich repeat (NBS-LRR) structures are known to contribute to disease resistance. Here, we identified a candidate resistance gene, named (t), associated with leaf and panicle blasts in an introgression line carrying the chromosome 4 segment of wild rice ( Griff.
View Article and Find Full Text PDFPlant Commun
August 2025
College of Life Sciences, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China. Electronic address:
In plants, reactive oxygen species (ROS) are maintained at strictly low intracellular levels, a prerequisite for their function as signals. Class III peroxidases serve as core regulators of intracellular ROS homeostasis, if environmental stimuli trigger long-term responses causing ROS accumulation. Here, we found a rice Class III peroxidase OsPrx20, which is a target of Ca/calmodulin-dependent protein kinase (OsDMI3) and is phosphorylated at its threonine (Thr)-244 site by OsDMI3, thereby positively regulating osmotic stress tolerance while negatively regulating blast resistance in rice.
View Article and Find Full Text PDF3 Biotech
September 2025
ICAR-Directorate of Medicinal & Aromatic Plants Research, Boriavi-387310 Anand, Gujarat India.
Unlabelled: The entire herbage is used as the economic part of the medicinal crop of however, the leaves contain nearly three times more andrographolide content as compared to the stem. Phase shift checks vegetative growth with the apical tips being transformed into panicles. Therefore, a nonflowering type of plant is considered an ideotype as it continues to produce new leaves and yields more andrographolide yield.
View Article and Find Full Text PDFPlant Biotechnol J
July 2025
State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu, China.
Immune activation usually trades off growth, leading to yield loss. Genes that coordinate resistance and yield are urgently required for crop improvement. MicroRNAs (miRNAs) provide rich candidates for coordinating resistance with yield.
View Article and Find Full Text PDFPlants (Basel)
July 2025
Biosciences Eastern and Central Africa-International Livestock Research Institute (BecA-ILRI), Nairobi P.O. Box 30709, Kenya.
Rice is a staple food for over half of the world's population, and it is grown in over 100 countries. Rice blast disease can cause 10% to 30% crop loss, enough to feed 60 million people. Breeding for resistance can help farmers avoid costly fungicides.
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