Witches’ broom
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Downy mildew, caused by the oomycete pathogen Sclerospora graminicola, is an economically important disease of Gramineae crops including foxtail millet (Setaria italica). Plants infected with S. graminicola are generally stunted and often undergo a transformation of flower organs into leaves (phyllody or witches’ broom), resulting in serious yield loss. To establish the molecular basis of downy mildew disease in foxtail millet, we carried out whole-genome sequencing and an RNA-seq analysis of S. graminicola.
16p vilarryellison 29-10-2021 8 0 Download
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JWB phytoplasma is a kind of insect-transmitted and uncultivable bacterial plant pathogen causeing a destructive Jujube disease. To date, no genome information about JWB phytoplasma has been published, which hindered its characterization at genomic level.
12p vitzuyu2711 29-09-2021 15 1 Download
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Mitogen-activated protein kinase (MAPK) cascades play vital roles in signal transduction in response to a wide range of biotic and abiotic stresses. In a previous study, we identified ten ZjMAPKs and five ZjMAPKKs in the Chinese jujube genome. We found that some members of ZjMAPKs and ZjMAPKKs may play key roles in the plant’s response to phytoplasma infection.
18p vijeeni2711 24-07-2021 9 0 Download
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Phyllody is a serious disease of sesame caused by phytoplasma. Different types of disease symptoms are reported to be associated with sesame phyllody. The major symptoms are phyllody, Flower virescence, witches broom, shoot tip fasciation, flattening of the shoot apex and cracking of seed capsules. In addition to this, infected plants exhibit reduction of internode distance and of leaf size. Investigations were carried out on the symptomatology of phytoplasma associated with phyllody disease.
16p angicungduoc5 12-06-2020 12 1 Download
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Soybean (Glycine max L. Merril) crop is major source of edible oil and protein for human and animals besides its various industrial uses including biofuels.
12p viharuno2711 24-04-2020 10 0 Download
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Witches’ broom disease (WBD) of cacao (Theobroma cacao L.), caused by Moniliophthora perniciosa, is the most important limiting factor for the cacao production in Brazil. Hence, the development of cacao genotypes with durable resistance is the key challenge for control the disease.
21p viharuno2711 21-04-2020 8 1 Download
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Niger [Guizotia abyssinica (L.f.) Cass.] is one of the important minor oilseed crops in India. Phyllody disease on niger noticed for the first time at Main Research Station, Hebbal, Bengaluru, Karnataka. The molecular detection and characterization of the phytoplasma causing niger phyllody was investigated during Kharif 2016. The causal agent of the phyllody disease was identified based on symptoms, amplification of 16S rDNA of the phytoplasma by polymerase chain reaction (PCR) from infected samples, as well as by sequencing and phylogenetic analysis.
8p cothumenhmong1 08-12-2019 16 0 Download
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Cinnamon (Cinnamomum cassia B.) is an important crop in Vietnam for domestic consumption and exportation. In recent years, a disease known as cinnamon witches’ broom (CinWB) has been discovered on cinnamon grown in Tra Bong district - Quang Ngai province. The typical symptoms of CinWB were the formation of small tumors on the stems, branches, petioles, and veins of plants. The tumors become long squid-like tassels giving the appearance of a witches’ broom. Infected plants are stunted, with delayed growth and development, causing a high reduction in the yield and quality of farmed cinnamon.
4p caygaocaolon1 13-11-2019 11 0 Download
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Nhiều nghiên cứu trong và ngoài nước cho thấy bệnh chổi rồng (Witches’ broom) là dịch hại quan trọng nhất trên cây nhãn, được ghi nhận ở Trung Quốc, Hồng Kông, Thái La.n Diện tích nhãn ở các tỉnh phía Nam: 54.900 ha chiếm 56% diện tích nhãn cả nước. Diện tích nhãn ở Tiền Giang: 8600ha, diện tích nhiễm chổi rồng 2816 ha chiếm khoảng 33%
48p hoatuoi0939310 28-02-2013 171 61 Download
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Nhãn là một trong những loại cây ăn trái chủ lực của nước ta, nhất là ở các tỉnh Nam bộ. Vài năm gần đây, trên cây nhãn của Nam bộ đã xuất hiện một bệnh mới - bệnh “Chổi rồng” (Witches’ broom), tùy theo địa phương chúng còn có tên gọi là bệnh chổi xể, đọt chổi, tổ rồng, chổi ma, hoa tre, cùi nhãn, chùn ngọn, xù ngọn… đây là bệnh nguy hiểm nhất trên cây nhãn hiện nay.
4p pretty3 27-07-2010 132 30 Download