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  • 1
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    Online Resource
    R hizopus Stem Rot of O robanche aegyptiaca caused by R hizopus oryzae in C hina
    Wiley ; 2013
    In:  Journal of Phytopathology Vol. 161, No. 10 ( 2013-10), p. 745-748
    Details
    In: Journal of Phytopathology, Wiley, Vol. 161, No. 10 ( 2013-10), p. 745-748
    Abstract: Stem rot was recorded on O robanche aegyptiaca in S hihezi C ity, X injiang U ygur A utonomous R egion, C hina from 2010 to 2011. The pathogen was isolated repeatedly from the infected stems and was identified as R hizopus oryzae based on morphology, cultural features and molecular analysis. Koch's postulates were supported by pathogenicity tests conducted on healthy plants grown on processing tomato and melon. To our knowledge, this paper is the first to report the occurrence of R . oryzae stem rot on O . aegyptiaca .
    Type of Medium: Online Resource
    ISSN: 0931-1785 , 1439-0434
    URL: Issue
    URL: Article
    DOI: 10.1111/jph.2013.161.issue-10
    DOI: 10.1111/jph.12124
    Language: English
    Publisher: Wiley
    Publication Date: 2013
    detail.hit.zdb_id: 2020539-9
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  • 2
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    Online Resource
    Screening of Haustorium Induction Factors of Phelipanche aegyptiaca Pers. Based on Metabolome Analysis of Cucumis melo L. Root Exudates
    MDPI AG ; 2022
    In:  Agronomy Vol. 13, No. 1 ( 2022-12-30), p. 128-
    Details
    In: Agronomy, MDPI AG, Vol. 13, No. 1 ( 2022-12-30), p. 128-
    Abstract: Phelipanche aegyptiaca Pers. is a holoparasitic plant that causes tremendous losses of agricultural crops worldwide. The initiation and development of the haustoria (special intrusive organs) is a key step in the growth of parasitic plants. The initiation of haustorium is largely dependent on haustorium-inducing factors (HIFs) secreted from host roots. Although HIFs of many semi-parasitic plants have been identified and reported, HIFs of the obligate parasitic plant P. aegyptiaca are largely unknown. This work demonstrated that the root exudates of the host plant Cucumis melo L. contain allelochemicals displaying haustorium-inducing activity on P. aegyptiaca germinating seeds, and there are significant differences in the induction effects of the resistant and susceptible C. melo cultivars of P. aegyptiaca (KR1326 and K1076). Ultra-performance liquid chromatography–mass spectrometry (UPLC-MS/MS) technology was used to identify and analyze the metabolites in root exudates of KR1326 and K1076. Cluster and PCA analyses showed significant differences between the metabolites in the KR1326 and K1076 root exudates. The determination of the haustorium induction effects of some metabolites screened from the differential metabolites indicated that scopoletin, quercetin, IAA, and DMBQ had relatively high haustorium induction activity. The results provide clues for finding HIFs of obligate parasitic plants and shed new light on the control of P. aegyptiaca by regulating haustorium development.
    Type of Medium: Online Resource
    ISSN: 2073-4395
    URL: Article
    DOI: 10.3390/agronomy13010128
    Language: English
    Publisher: MDPI AG
    Publication Date: 2022
    detail.hit.zdb_id: 2607043-1
    SSG: 23
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  • 3
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    Online Resource
    Development of droplet digital PCR for the detection of Tilletia laevis, which causes common bunt of wheat, based on the SCAR marker derived from ISSR and real-time PCR
    Springer Science and Business Media LLC ; 2020
    In:  Scientific Reports Vol. 10, No. 1 ( 2020-09-30)
    Details
    In: Scientific Reports, Springer Science and Business Media LLC, Vol. 10, No. 1 ( 2020-09-30)
    Abstract: Common bunt of wheat caused by Tilletia laevis and/or T. caries (syn. T. tritici ) , is a major disease in wheat-growing regions worldwide that could lead to 80% or even total loss of production. Even though T. laevis can be distinguished from T. caries on the bases of morphology of teliospores using microscopy technique. However, molecular methods could serve as an additional method to quantify the pathogen . To develop a rapid diagnostic and quantify method, we employed the ISSR molecular marker for T. laevis in this study. The primer ISSR857 generated a polymorphic pattern displaying a 1385 bp  T. laevis- specific DNA fragment. A pair of specific primers (L57F/L57R) was designed to amplify a sequence-characterized amplified region (SCAR) (763 bp) for the PCR detection assay. The primers amplified the DNA fragment in the tested isolates of T. laevis but failed in the related species, including T. caries . The detection limit of the primer set (L57F/L57R) was 5 ng/µl of DNA extracted from T. laevis teliospores. A SYBR Green I real-time PCR method for detecting T. laevis with a 100 fg/µl detection limit and droplet digital PCR with a high sensitivity (30 fg/µl detection limit) were developed; this technique showed the most sensitive detection compared to the SCAR marker and SYBR Green I real-time PCR. Additionally, this is the first study related the detection of T. laevis with the droplet digital PCR method.
    Type of Medium: Online Resource
    ISSN: 2045-2322
    URL: Article
    DOI: 10.1038/s41598-020-72976-7
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2020
    detail.hit.zdb_id: 2615211-3
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  • 4
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    Identification of risk areas for Orobanche cumana and Phelipanche aegyptiaca in China, based on the major host plant and CMIP6 climate scenarios
    Wiley ; 2022
    In:  Ecology and Evolution Vol. 12, No. 4 ( 2022-04)
    Details
    In: Ecology and Evolution, Wiley, Vol. 12, No. 4 ( 2022-04)
    Abstract: Parasitic broomrape of the genus Orobanche poses a formidable threat to producing many crops in Europe, Africa, and Asia. Orobanche cumana and Phelipanche aegyptiaca are two of China's most destructive root parasitic plants, causing extreme sunflower, tomato, melon, and tobacco damage. However, the potentially suitable areas of O . cumana and P . aegyptiaca in China have not been predicted, and little is known about the important environmental factors that affect their extension. Due to their invasiveness and economic importance, studying how climate change and host plants may affect broomrapes’ distribution is necessary. In the study, we first predicted the potentially suitable areas of the invasive weeds ( O . cumana and P. aegyptiaca ) and their susceptible host plants ( Helianthus annuus and Solanum lycopersicon ) using MaxEnt. Then, the risk zones and distribution shifts of two broomrapes under different climate conditions were identified by incorporating the distribution of their susceptible host plants. The results highlighted that the potential middle‐ and high‐risk zones for O .  cumana and P . aegyptiaca amounted to 197.88 × 10 4  km 2 and 12.90 × 10 4  km 2 , respectively. Notably, Xinjiang and Inner Mongolia were the highest‐risk areas within the distribution and establishment of O . cumana and P . aegyptiaca . Elevation and topsoil pH were the decisive factors for shaping O . cumana distribution; precipitation seasonality and annual precipitation were the dominant bioclimatic variables limiting the spread of P . aegyptiaca . The potentially suitable areas and risk zones of O . cumana would decrease significantly, and those of P . aegyptiaca would fluctuate slightly under future climate change scenarios. Overall, our study suggested that the two broomrapes’ risk zones will significantly northward to higher latitudes. The results will provide suggestions for preventing O . cumana and P . aegyptiaca .
    Type of Medium: Online Resource
    ISSN: 2045-7758 , 2045-7758
    URL: Issue
    URL: Article
    DOI: 10.1002/ece3.v12.4
    DOI: 10.1002/ece3.8824
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 2635675-2
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  • 5
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    Online Resource
    Detection of Secreted Effector Proteins from Phelipanche aegyptiaca During Invasion of Melon Roots
    Scientific Societies ; 2023
    In:  Phytopathology®
    Details
    In: Phytopathology®, Scientific Societies
    Abstract: Parasites can interact with their host plants through the induction and delivery of secreted effector proteins that facilitate plant colonization by decomposing plant cell walls and inhibiting plant immune response to weaken the defense ability of the host. Yet effectors mediating parasitic plant–host interactions are poorly understood. Phelipanche aegyptiaca is an obligate root parasite plant causing severe yield and economic losses in agricultural fields worldwide. Host resistance against P. aegyptiaca occurred during the attachment period of parasitism. Comparative transcriptomics was used to assess resistant and susceptible interactions simultaneously between P. aegyptiaca and two contrasting melon cultivars. In total, 2,740 secreted proteins from P. aegyptiaca were identified here. Combined with transcriptome profiling, 209 candidate secreted effector proteins (CSEPs) were predicted, with functional annotations such as cell wall degrading enzymes, protease inhibitors, transferases, kinases, and elicitor proteins. A heterogeneous expression system in Nicotiana benthamiana was used to investigate the functions of 20 putatively effector genes among the CSEPs. Cluster 15140.0 can suppress BAX-triggered programmed cell death in N. benthamiana. These findings showed that the prediction of P. aegyptiaca effector proteins based on transcriptomic analysis and multiple bioinformatics software is effective and more accurate, providing insights into understanding the essential molecular nature of effectors and laying the foundation of revealing the parasite mechanism of P. aegyptiaca, which is helpful in understanding parasite–host plant interaction.
    Type of Medium: Online Resource
    ISSN: 0031-949X , 1943-7684
    URL: Article
    DOI: 10.1094/PHYTO-11-22-0441-R
    Language: English
    Publisher: Scientific Societies
    Publication Date: 2023
    detail.hit.zdb_id: 2037027-1
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  • 6
    Online Resource
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    First Report of Karelinia caspia (Pall.) Less as a new host of Orobanche cumana Wallr. in Xinjiang, China
    Scientific Societies ; 2023
    In:  Plant Disease
    Details
    In: Plant Disease, Scientific Societies
    Abstract: Sunflower broomrape (Orobanche cumana Wallr.) is a holoparasitic plant species which mainly parasitizes a few species of the Asteraceae in the wild and is exclusively found growing on sunflower in agricultural fields (Fernández-Martínez et al. 2015). O. cumana is a serious threat to sunflower production in Xinjiang and Inner Mongolia (Shi et al. 2015). Karelinia caspia (Pall.) Less. (Asteraceae) is an ecologically important plant species occurring across the desert ecosystems of Russia, Central Asia, and northwest China. It plays an important role in reducing wind erosion and desertification (Xu et al. 2018). During the 2018 and 2019 growing seasons, sunflower broomrape was observed parasitizing K. caspia in non-cultivated areas adjacent to sunflower fields near Beitun city (87°51'E, 47°15'N) in Xinjiang, China. Sunflower broomrape plants were identified morphologically as O. cumana according to Pujadas-Salvà and Velasco (2000). The host plants were identified morphologically as K. caspia according to Lin et al (1979). The ribosomal DNA internal transcribed spacer (ITS) and the trnL-F region of the parasite were amplified by PCR using primer pairs ITS1/ITS4 and trnL-FF/trnL-FR, respectively (Taberlet et al. 1991; Anderson et al. 2004). The ITS sequence of the parasite (Accession No. MT795725.1) showed 100% identity (675bp out of 689bp) to that of O. cernua var. cumana (KC811228.1). The trnl-F sequence of the parasite (Accession No. ON843707) showed 98% identity (675 of 689 bp) to O.cernua var. cumana (KT387722.1). Multi-locus phylogenetic analysis of the two sequences showed clustering with sunflower broomrape. The ITS region of the parasite and host was were amplified by PCR using the primer pair ITS1F/ITS4R (Taberlet et al.1991), and the ITS sequences of the host (Accession No. MT791995.1) showed 99.86% identity (728bp of 802bp) to that of K. caspia (LN607483.1). Rhizotron and pot experiments were carried out to assess the parasitic relationship between O. cumana and K. caspia. In the rhizotron experiment, 2-week-old seedlings of K. caspia were inoculated with sterilized 400 O. cumana seeds in a 15-cm petri dish filled with a sponge overlaid with glass fiber filter paper. The parasitic state of O. cumana was observed 9 days after inoculation. In another trial, seeds of K. caspia were sowed in 2-L and 4-L pots containing sand-vermiculite-compost (1:1:1 v:v:v). These pots were artificially inoculated with 50 mg of O. cumana seeds per 1 kg of substrate. After 20 and 70 days, corresponding to the early parasitic and flowering stages, respectively, of O. cumana, K. caspia plants were uprooted from the media and washed carefully. The parasitic relationship was confirmed by the attachment position of the broomrape to the K. caspia root. To our knowledge, this is the first report of O. cumana parasitizing K. caspia in Xinjiang, China. This phenomenon means that sunflower broomrape can raise up seed on a newly recognized host. Weed eradication in and near sunflower fields is a key measure to control sunflower broomrape.
    Type of Medium: Online Resource
    ISSN: 0191-2917 , 1943-7692
    URL: Article
    DOI: 10.1094/PDIS-05-23-0988-PDN
    Language: English
    Publisher: Scientific Societies
    Publication Date: 2023
    detail.hit.zdb_id: 2042679-3
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  • 7
    Online Resource
    Online Resource
    Lipopeptide production by Bacillus atrophaeus strain B44 and its biocontrol efficacy against cotton rhizoctoniosis
    Springer Science and Business Media LLC ; 2021
    In:  Biotechnology Letters Vol. 43, No. 6 ( 2021-06), p. 1183-1193
    Details
    In: Biotechnology Letters, Springer Science and Business Media LLC, Vol. 43, No. 6 ( 2021-06), p. 1183-1193
    Type of Medium: Online Resource
    ISSN: 0141-5492 , 1573-6776
    URL: Article
    DOI: 10.1007/s10529-021-03114-0
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2021
    detail.hit.zdb_id: 2012203-2
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  • 8
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    Table_6.docx
    Frontiers Media SA ; 2023
    In:  Frontiers in Plant Science Vol. 14 ( 2023-3-24)
    Details
    In: Frontiers in Plant Science, Frontiers Media SA, Vol. 14 ( 2023-3-24)
    Abstract: Melon ( Cucumis melo L.) is an economically important crop in Xinjiang, China, but its production is constrained by the parasitic plant Phelipanche aegyptiaca that attaches to the roots of many crops and causes severe stunting and loss of yield. Rhizotron, pot, and field experiments were employed to evaluate the resistance of 27 melon cultivars to P. aegyptiaca . Then, the resistant and susceptible cultivars were inoculated with P. aegyptiaca from six populations to assess their resistance stability and broad spectrum. Further microscopic and histological analyses were used to clarify the resistance phenotypes and histological structure. The results showed that Huangpi 9818 and KR1326 were more resistant to P. aegyptiaca compared to other cultivars in the rhizotron, pot, and field experiments. In addition, compared to the susceptible cultivar K1076, Huangpi 9818 and KR1326 showed broad-spectrum resistance to six P. aegyptiaca populations. These two resistant cultivars had lower P. aegyptiaca biomass and fewer and smaller P. aegyptiaca attachments on their roots compared to susceptible cultivar K1076. KR1326 (resistant) and K1076 (susceptible) were selected to further study resistance phenotypes and mechanisms. Germination-inducing activity of root exudates and microscopic analysis showed that the resistance in KR1326 was not related to low induction of P. aegyptiaca germination. The tubercles of parasite on KR1326 were observed slightly brown at 14 days after inoculation (DAI), the necrosis and arrest of parasite development occurred at 23 DAI. Histological analysis of necrosis tubercles showed that the endophyte of parasite had reached host central cylinder, connected with host xylem, and accumulation of secretions and callose were detected in neighbouring cells. We concluded that KR1326 is an important melon cultivar for P. aegyptiaca resistance that could be used to expand the genetic basis of cultivated muskmelon for resistance to the parasite.
    Type of Medium: Online Resource
    ISSN: 1664-462X
    URL: Article
    URL: Article
    URL: Article
    URL: Article
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    DOI: 10.3389/fpls.2023.1070319
    DOI: 10.3389/fpls.2023.1070319.s001
    DOI: 10.3389/fpls.2023.1070319.s002
    DOI: 10.3389/fpls.2023.1070319.s003
    DOI: 10.3389/fpls.2023.1070319.s004
    DOI: 10.3389/fpls.2023.1070319.s005
    DOI: 10.3389/fpls.2023.1070319.s006
    DOI: 10.3389/fpls.2023.1070319.s007
    DOI: 10.3389/fpls.2023.1070319.s008
    DOI: 10.3389/fpls.2023.1070319.s009
    Language: Unknown
    Publisher: Frontiers Media SA
    Publication Date: 2023
    detail.hit.zdb_id: 2687947-5
    detail.hit.zdb_id: 2613694-6
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