Cereal immune receptors can be reworked to recognize several fungal threats, John Innes team reports
John Innes Centre researchers engineered plant immune receptors to recognize several fungal threats at once, aimed at rice blast. Blast destroys enough rice a year to feed about 60 million people, the centre says. The receptor work itself is still experimental.
The Scientist · Science desk
What happened
- The fungus behind blast, Magnaporthe oryzae, now also threatens wheat and barley in parts of Asia and Africa.
- The team examined how HMA domains interact with molecules the blast fungus releases, using biophysical techniques.
- The results appeared in Science Advances, with collaborators at Kobe University in Japan.
Why it matters
- What's now possible capability Changing amino acids where effectors bind is the route Banfield proposes for giving a receptor new targets, so one receptor might cover several fungal threats.
- What it sets up precedent Because some TKPs share an HMA domain with certain NLRs, what is known about NLR recognition offers a starting point for engineering the newer family.
- What it limits constraint Stronger, more durable resistance is the release's goal. Durability can only be tested over repeated growing seasons, so it stays unproven for now.
The design rests on an old family of receptors and a newer one that shares a piece with it. For more than three decades, much of the research into plant immunity has centered on NLR receptors [8]. Tandem kinase proteins, or TKPs, are a more recent interest in cereal crops, and researchers are still learning how they operate [9]. Some TKPs contain a Heavy Metal Associated (HMA) domain, and similar regions sit in certain NLRs, where they help recognize pathogen effectors and start an immune response [10].
That overlap caught the attention of Professor Mark Banfield, who leads a research group at the John Innes Centre and co-authored the study [15]. "This piqued our interest," said Banfield. "If we can engineer these integrated HMA domains for new properties by making amino acid protein changes where effectors bind, we can gain what we call novel recognition specificities - and potentially a new frontline for defense of plants against disease." [13]
In the paper, the team examined how HMA domains interact with the molecules the blast fungus releases, using biophysical techniques [14]. The account of methods available ends there, so the assays, the controls and the number of receptor variants tested are not described.
The thing this doesn't tell you is whether a reworked receptor protects a plant. The John Innes Centre release says the researchers demonstrated that the receptors can be modified to detect multiple fungal threats [11]. Detection is the first step of a plant's defense. A receptor that recognizes an effector triggers a response that can include cell death in a small, localized area, which helps keep the pathogen from spreading [7]. Protection in a crop is the later step, and the release frames it as a possibility: the findings could lead to crops with stronger, more durable resistance [17].
Banfield's own wording sits at that stage. "We've discovered something that could lead to a potential intervention on what is the worst fungal disease of cereals," he said [12].
In our view the design route is the finding to take seriously now. Whether it yields resistance in wheat, rice or barley is a later question.
What to watch
- The full Science Advances paper: whether modified receptors trigger cell death or resistance in whole plants, and what controls were used.
- Tests in wheat, rice and barley against more than one blast strain, since multi-threat recognition is the claim.
- Follow-up work on how TKPs operate, which the researchers say they are still learning.
Clarity's read
What the record supports and how the coverage leans. The claims behind it follow.
Reality
- Evidence50
- Adoption
- Not scored
- Hype gap+30
- Incentives55
- Confidence50
Claim ledger
Ranked by verification strength, evidence, and original report placement.
- [1]
The international research team was led by scientists at the John Innes Centre in the United Kingdom, with collaborators at Kobe University in Japan.
- [2]
The study was published in Science Advances.
- [3]
The target is Magnaporthe oryzae, the fungus behind blast disease, the most serious fungal disease affecting cultivated rice.
- [4]
Magnaporthe oryzae has also become a major threat to wheat and barley in parts of Asia and Africa.
- [5]
Each year, rice blast destroys enough rice to feed approximately 60 million people.
- [6]
The fungus delivers molecules known as effectors into cells in the leaves and stems, which interfere with normal plant functions and let the pathogen establish infection.
- [7]
Plant immune receptors recognize effectors and trigger a protective response; one important mechanism causes infected cells to die in a controlled, localized area, helping prevent the pathogen spreading farther.
- [8]
For more than three decades, much of the research into plant immunity has centered on Nucleotide-binding and leucine-rich receptors (NLRs).
- [9]
More recently, scientists have begun investigating tandem kinase proteins (TKPs) in cereal crops, and researchers are still learning how these receptors operate.
- [10]
Some TKPs contain a Heavy Metal Associated (HMA) domain; similar regions are found in certain NLR receptors, where they help recognize pathogen effectors and initiate immune responses.
- [11]
The researchers identified how these receptors recognize invading pathogens and demonstrated that they can be modified to detect multiple fungal threats.
- [12]
"We've discovered something that could lead to a potential intervention on what is the worst fungal disease of cereals,"
- [13]
"This piqued our interest," said Professor Banfield. "If we can engineer these integrated HMA domains for new properties by making amino acid protein changes where effectors bind, we can gain what we call novel recognition specificities - and potentially a new frontline for defense of plants against disease."
- [14]
In the study, researchers examined how HMA domains interact with the molecules released by the blast fungus, using biophysical techniques.
- [15]
Professor Mark Banfield is a research group leader at the John Innes Centre and an author of the study.
- [16]
The release describes an experimental approach that could eventually help wheat, rice and barley resist fungal infections more effectively.
- [17]
The release says the findings could open the door to crops with stronger, more durable disease resistance.
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Sources
1 independent publisher whose own reporting we read for this story.
- sciencedaily.comA fungus is threatening the world’s food supply. Scientists just found a new defense
1 article · October 15, 2026
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Topics
- Protein and Enzyme EngineeringFollow
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- Plant immunityFollow
Entities
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- ScienceDailyFollow
- Mark BanfieldFollow
- Science AdvancesFollow
- Magnaporthe oryzaeFollow
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