Three Orobanche genomes reveal distinct molecular repertoires in species with different host ranges

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We sequenced the genomes of three Orobanche species with different host ranges: O. minor (generalist), O. gracilis (Fabaceae-specific), and O. hederae (ivy-specific with some flexibility within Araliaceae). O. gracilis showed expanded protein-degrading and carbohydrate-active enzyme families, while putative strigolactone receptor (KAI2d) numbers varied from five in specialists to eleven in the generalist O. minor. https://doi.org/10.1093/pcp/pcaf047 […]

Natives strike back: a generalist mistletoe attacks exotic invaders

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A recent study highlights the surprising role of a native Chilean mistletoe, Tristerix corymbosus, in combating invasive tree species in urban environments. This parasitic plant, known for its vibrant red flowers, typically infests native trees but has shifted to fast-growing non-native hosts, such as Populus and Acacia species. We found that T. corymbosus thrives on these invaders, growing larger and more abundant […]

From Haustorium 87: Strigolactone transporter gene editing results in parasitic weed resistance in sorghum and tomato. The parasitic weed problem solved?

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Jiayang Shi et al., 2025. Resistance to Striga parasitism through reduction of strigolactone exudation. Cell, 2025, ISSN 0092-8674, https://doi.org/10.1016/j.cell.2025.01.022 Xinwei Ban et al., 2025. Manipulation of a strigolactone transporter in tomato confers resistance to the parasitic weed broomrape. The Innovation, 2025, 100815, ISSN 2666-6758, https://doi.org/10.1016/j.xinn.2025.100815. At about the same time these two papers show once […]

From Haustorium 87: Lost for 85 years: Sapria himalayana rediscovered in Arunachal’s Eaglenest Sanctuary

Last recorded in 1938 near Rupa in the Aka Hills, Arunachal Pradesh, Sapria himalayana has remained one of the most elusive members of the Rafflesiaceae family. Sapria himalayana, the cousin of the world’s largest flower, Rafflesia, was first discovered in the Mishmi Hills of Arunachal Pradesh by British botanist William Griffith in 1836. Despite its […]

IPPS Online Seminar on June 4th, 2025, by Jessy Lasky and Yu Feifei

The IPPS June Seminar will feature two talks on Striga: Prof. Jessy Lasky from the Pennsylvania State University will talk about: “Genetics, physiology, and evolution of sorghum resistance and striga host adaptation” and Prof. Yu Feifei from the China Agricultural University will talk about: “Resistance to Striga parasitism through reduction of strigolactone exudation” Date: Wednesday, […]

Image Analysis and Untargeted Metabolomics Reveal Potential Phytotoxins from Fusarium venenatum Against Major Parasitic Weed Phelipanche ramosa (L.) Pomel

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Branched broomrape (Phelipanche ramosa (L.) Pomel), an obligate parasitic weed with a wide host range, is known for its devasting effects on many crops worldwide. Soil fungi, notably Fusarium sp., are described as pathogenic to broomrape, while the hypothesis of the phytotoxicity of fusaric acid produced by F. verticillioides for parasitic weeds of the genus Orobanche has been proposed. Using image analysis […]

Farm survey on parasitic weeds in Europe: please help us reach out to farmers!

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SURVEY 📝 Weeds are high on the list of production-limiting factors in arable farming, fruit and vegetable cultivation. Changing social perceptions and stricter requirements regarding the use of pesticides are putting pressure on effective management of weeds. In a more general sense, the transition to more sustainable agriculture, as well as climate change, may cause […]

Developing Striga resistance in sorghum by modulating host cues through CRISPR/Cas9 gene editing

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I am happy with this product of longterm collaboration with Pooja Bhatnagar. Here we used gene editing to reduce germination stimulant production in sorghum, which enhanced resistance to Striga infection. Sorghum (Sorghum bicolor L.) is a primary food staple grain for millions in Sub-Saharan Africa (SSA). It is mainly constrained by the parasitic weed Striga, […]

Special Issue Weed Research on parasitic weeds completed

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A new Special Issue of Weed Research, dedicated to parasitic weeds, is now completed. Submissions focusing on all aspects -from biology, physiology and ecology to management- with relevance to weedy species of parasitic plants were welcomed. The call for this Special Issue resulted in seven papers. Five papers presented studies on Striga hermonthica, probably the […]

IPPS Online Seminar on May 7th, 2025, by Junkun Lu and Xinhua Zhang

Our IPPS May Seminar will feature two talks about the parasitic tree sandalwood. First talk: Prof. Junkun Lu from the Research Institute of Tropical Forestry, Chinese Academy of Forestry will talk about: “Synergistic parasitism of mixed rosewood-sandalwood plantation in China” Second talk: Prof. Xinhua Zhang, from the South China Botanical Garden, Chinese Academy of Sciences […]