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The fungus that spoils nearly everything: Gray mold secret revealed

Phys · · 667 words · By Amy Quinton

Researchers from the University of California, Davis, have published two studies in the Proceedings of the National Academy of Sciences regarding the fungus Botrytis cinerea. The research suggests that plants have unique defense responses and that the fungus adapts its attack strategy based on the specific host plant it infects.

open_in_new Read the original article: https://phys.org/news/2026-05-fungus-gray-mold-secret-revealed.html

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confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkFact-Check Results

8 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

info Single Source 7
verified Verified By Reference 1
verified
“Commonly known as gray mold, the fungus [Botrytis cinerea] attacks hundreds of plants.”
VERIFIED BY REFERENCE
Wikipedia and multiple university extensions (UCANR, Penn State) confirm that Botrytis cinerea is commonly known as gray mold and attacks a wide variety of plant species.
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web search NEUTRAL — Botrytis is a genus of anamorphic fungi in the family Sclerotiniaceae. Botrytis (also known as grey mold) belongs to the group hyphomycetes and has about 30 different species.
https://en.wikipedia.org/wiki/Botrytis_(fungus)
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web search NEUTRAL — Botrytis and Botryotinia species can grow on almost any moist or decaying herbaceous vegetation. Weeds and plant debris are common sources of gray mold spores, which are produced in enormous numbers a…
https://ipm.ucanr.edu/home-and-landscape/botrytis-blight-or-…
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web search NEUTRAL — Jul 5, 2023 · Botrytis is a pathogenic fungus found virtually everywhere plants are grown.
https://extension.psu.edu/botrytis-or-gray-mold
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“Two related studies led by Dan Kliebenstein, professor in the UC Davis Department of Plant Sciences... were published in the Proceedings of the National Academy of Sciences.”
SINGLE SOURCE
Evidence confirms Dan Kliebenstein is a professor in the UC Davis Department of Plant Sciences and has published in PNAS, but the specific 'two related studies' mentioned in the claim are not explicitly identified in the provided search results.
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web search NEUTRAL — Plant Sciences, University of California, Davis.A Ratzka, H Vogel, DJ Kliebenstein, T Mitchell-Olds, J Kroymann. Proceedings of the National Academy of Sciences 99 (17), 11223-11228, 2002.
https://scholar.google.com/citations?user=-OdJO1UAAAAJ&hl=en
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web search NEUTRAL — Daniel Kliebenstein. Position Title. Professor. Plant Sciences.ORCID record for Dan J. Kliebenstein. ORCID provides an identifier for individuals to use with their name as they engage in research, sch…
https://caes.ucdavis.edu/people/dan-kliebenstein
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web search NEUTRAL — Home. University of California, Davis. Department of Plant Sciences. Daniel Kliebenstein.In the present study, we constructed a reference library of 334,461 SVs from genome assemblies of 16 representa…
https://www.researchgate.net/profile/Daniel-Kliebenstein-2
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“Each plant mounted a response that was fundamentally its own, whether comparing closely related crops or distant ones.”
SINGLE SOURCE
While evidence confirms Botrytis cinerea affects many plants and triggers defense responses, there is no specific evidence in the provided results regarding the 'fundamentally unique' nature of these responses across closely vs distantly related crops as described in the claim.
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web search NEUTRAL — Botrytis cinerea is a necrotrophic fungus that affects many plant species, including wine grapes. In viticulture, it is commonly known as "botrytis bunch rot"; in horticulture, it is usually called "g…
https://en.wikipedia.org/wiki/Botrytis_cinerea
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web search NEUTRAL — The defense elicitor β-aminobutyric acid (BABA) is reported to induce resistance against B. cinerea and many other pathogens in several crop plants.In control plants not treated with BABA, we found a …
https://pubmed.ncbi.nlm.nih.gov/36570914/
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web search NEUTRAL — Botrytis cinerea is a dangerous plant pathogenic fungus with wide host ranges. This aggressive pathogen uses multiple weapons to invade and cause serious damages on its host plants.
https://www.frontiersin.org/journals/plant-science/articles/…
info
“gray mold appears to sense what it's growing on and adjusts its attack accordingly.”
SINGLE SOURCE
The provided evidence discusses the fungus's ability to infect numerous hosts and the evolution of generalist vs host-specific genes, but does not explicitly confirm the claim that it 'senses what it's growing on and adjusts its attack accordingly'.
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web search NEUTRAL — Botrytis cinerea is a necrotrophic fungus that affects many plant species, including wine grapes.In viticulture, it is commonly known as "botrytis bunch rot"; in horticulture, it is usually called "gr…
https://en.wikipedia.org/wiki/Botrytis_cinerea
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web search NEUTRAL — Theoretically, B. cinerea's ability to infect numerous hosts might result from the evolution of novel “generalist” genes or collection of host-specific genes found in other Botrytis species.
https://pmc.ncbi.nlm.nih.gov/articles/PMC12239214/
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web search NEUTRAL — Plant molecular biology, 2002. Botrytis cinerea is a non-specific necrotrophic pathogen that attacks more than 200 plant species. In contrast to biotrophs, the necrotrophs obtain their nutrients by fi…
https://www.academia.edu/84805931/The_hypersensitive_respons…
info
“Gray mold causes an estimated 5% to 10% crop loss across many fruits and vegetables, affecting everything from grapes and lettuce to soybeans and cut flowers.”
SINGLE SOURCE
Evidence confirms the fungus causes 'huge losses' and affects over 1400 species including grapes, but the specific '5% to 10%' figure is not found in the provided evidence.
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web search NEUTRAL — Botrytis cinerea, a phytopathogen causing gray mold on over 1400 species worldwide, has led to huge losses in agricultural products. Efforts have been made to control this notorious pathogen.
https://www.researchgate.net/topic/Botrytis-Cinerea/publicat…
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web search NEUTRAL — Botrytis cinerea is a necrotrophic fungus that affects many plant species, including wine grapes.
https://en.wikipedia.org/wiki/Botrytis_cinerea
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web search NEUTRAL — Botrytis cinerea causes significant economic losses in table grapes, necessitating effective control methods. Over 27 million tons of table grapes are produced annually, highlighting their market impo…
https://www.academia.edu/52007471/Botrytis_cinerea_and_Table…
info
“Other authors of the studies include Ritu Singh, Anna Jo Muhich, Cloe Tom, Celine Caseys, Jack McMillan, Karishma Srinivas and Lucca Faieta of UC Davis.”
SINGLE SOURCE
The search results for 'Ritu' and other names provided are irrelevant (referring to seasons or fashion designers) and do not confirm the co-authorship of the studies mentioned.
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web search NEUTRAL — Ritu (Sanskrit: ऋतु) means "season" in different ancient Indian calendars used in India, Bangladesh, Nepal and Sri Lanka. There are six ritus (also transliterated ritu) or seasons.
https://en.m.wikipedia.org/wiki/Ritu_(season)
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web search NEUTRAL — Track Order Returns & Exchange Fees & Payments Shipping & Delivery Privacy Policy Terms & Conditions FAQs OUR COMPANY About Brand Store Locator OUR BRANDS RITU KUMAR Dresses Tops & Tunics Kurtas & Kur…
https://ritukumar.com/
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web search NEUTRAL — 691K Followers, 5 Following, 3,972 Posts - Ritu Kumar (@ritukumarhq) on Instagram: "Official account of Ritu Kumar | #RituKumar For queries- customercare@ritukumar.com Now live - Ritu Kumar SS26"
https://www.instagram.com/ritukumarhq/
info
“Ritu Singh et al, A multiplant transcriptomic atlas reveals conserved and lineage-specific defense architectures in response to Botrytis cinerea, Proceedings of the National Academy of Sciences (2026). DOI: 10.1073/pnas.2601719123”
SINGLE SOURCE
No record of a PNAS paper with this specific title or DOI from 2026 was found in the provided evidence. Note: 2026 is a future date relative to current real-time data, and the DOI was not validated by the search results.
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web search NEUTRAL — Botrytis cinerea is a dangerous plant pathogenic fungus with wide host ranges. This aggressive pathogen uses multiple weapons to invade and cause serious dam...
https://www.frontiersin.org/journals/plant-science/articles/…
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web search NEUTRAL — Results: Our study aimed to identify lncRNAs induced by B. cinerea infection in 'Hongyang' kiwifruit at 0 to 3 days post-inoculation (dpi) through high-throughput sequencing. The differential expressi…
https://pubmed.ncbi.nlm.nih.gov/40234757/
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web search NEUTRAL — Global gene expression responses of tomato against B. cinerea under contrasting nitrate conditions reveals that plant primary metabolism is affected by the fungal infection regardless of N regimes.
https://www.semanticscholar.org/paper/Transcriptome-analysis…
info
“Ritu Singh et al, Combined generalist and host-specific transcriptional strategies enable host generalism in the fungal pathogen Botrytis cinerea, Proceedings of the National Academy of Sciences (2026). DOI: 10.1073/pnas.2521414123”
SINGLE SOURCE
No record of a PNAS paper with this specific title or DOI from 2026 was found in the provided evidence. The search results returned generic study tools rather than the academic paper.
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web search NEUTRAL — Need a Study.com Account? Simple & engaging videos to help you learn Unlimited access to 88,000+ lessons The lowest-cost way to earn college credit
https://study.com/academy/login.html
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web search NEUTRAL — Master any subject with Studley AI. Trusted by more than 2,000,000 top students. Create beautiful and interactive notes, flashcards, quizzes and podcasts from any content. Study smarter, not harder.
https://www.studley.ai/
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web search NEUTRAL — StudyX helps students study with AI throughout the entire learning journey. Students can use it to get homework help, turn lectures and study materials into notes, generate flashcards and quizzes for …
https://studyx.ai/
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.