First Report of Dodder (<i>Cuscuta australis</i>) on the Invasive Weed <i>Xanthium strumarium</i> var. <i>canadense</i> in China
Notice bibliographique
Résumé
HomePlant DiseaseVol. 103, No. 3First Report of Dodder (Cuscuta australis) on the Invasive Weed Xanthium strumarium var. canadense in China PreviousNext DISEASE NOTES OPENOpen Access licenseFirst Report of Dodder (Cuscuta australis) on the Invasive Weed Xanthium strumarium var. canadense in ChinaW.-B. Wang, M.-N. An, Y.-L. Feng, and B. QuW.-B. Wanghttp://orcid.org/0000-0002-8160-6025College of Plant Protection, Shenyang Agricultural University, Shenyang, Liaoning 110866, China; and , M.-N. Anhttp://orcid.org/0000-0002-6187-6984College of Plant Protection, Shenyang Agricultural University, Shenyang, Liaoning 110866, China; and , Y.-L. Feng†Corresponding author: Y.-L. Feng; E-mail: E-mail Address: [email protected]College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, Liaoning 110866, China., and B. Quhttp://orcid.org/0000-0003-2065-8347College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, Liaoning 110866, China.AffiliationsAuthors and Affiliations W.-B. Wang1 M.-N. An1 Y.-L. Feng2 † B. Qu2 1College of Plant Protection, Shenyang Agricultural University, Shenyang, Liaoning 110866, China; and 2College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, Liaoning 110866, China. Published Online:10 Jan 2019https://doi.org/10.1094/PDIS-07-18-1200-PDNAboutSections ToolsAdd to favoritesDownload CitationsTrack Citations ShareShare onFacebookTwitterLinked InRedditEmailWechat Xanthium strumarium L. var. canadense (Mill.) Torr. & A. Gray (Canada cocklebur; Asteraceae), an annual herb native to North America, has been widely naturalized in Eurasia (Yin et al. 2012). This introduced plant was first recorded in Beijing in 1991 and now has spread into many provinces in China such as Hebei, Shandong, Liaoning, Jilin, Heilongjiang, Guangdong, Guangxi, and Xinjiang. This invasive, noxious weed generally invades disturbed habitats such as wastelands, riverbanks, roadsides, meadows, and croplands, causing serious ecological and economic impacts in China (Zhao et al. 2014). To determine its distributions and natural enemies in Liaoning Province, we carried out field surveys in the summer of 2016. On August 7, dodder was first found on Canada cocklebur at three disturbed sites (N 41°49′15.41″ to 41°49′20.81″, E 123°34′56.37″ to 123°35′05.41″, 54 to 57 m above sea level) along the Xinkai River in Shenyang (with temperate continental monsoon climate), Liaoning Province, Northeast China. At each site we found a nearly circular patch of Canada cocklebur (3, 5, and 8 m in diameter, respectively) that was parasitized by dodder. Cocklebur parasitized by the dodder showed wilting and senescent leaves, stunted growth, and few or no fruit produced. The dodder wrapped around petioles and stems of the invasive weed, and it occasionally spread onto cooccurring native plants such as Setaria viridis (L.) Beauv. and Humulus scandens (Lour.) Merr. Where the dodder penetrated the cocklebur stem tissues, brownish black lesions developed with small cracks. Based on its inflorescence, bracts, calyces, pedicles, flowers, capsule, ovary, and seed, the dodder was identified as Cuscuta australis R. Br. (Wu 1979; Zhao et al. 2015). The morphological identification was confirmed by molecular evidence. We measured the base sequence of the internal transcribed spacer (ITS) region of ribosomal DNA of the dodder (amplified with S2F-S3R as primers) and found that it (deposited into GenBank; accession no. MH370812) was 99.75% similar to that of C. australis in GenBank (AY554398). Our dodder was 96.47% similar to the nearest relative, C. epithymum (AY554400.1) (Revill et al. 2005). Dodder is distributed worldwide from temperate to tropical regions. It has been found parasitizing other invasive plants such as Ambrosia artemisiifolia (Zhao et al. 2015). To our knowledge, this is the first report of C. australis parasitizing Canada cocklebur in China. The dodder produced 228 to 2,985 seeds (1.05 to 1.22 mm in length) on each infested host and reduced aboveground biomass of the cocklebur by 68.70 to 80.69% and fruit production by 87.59 to 97.21% in the field (data not shown). The dodder and other natural enemies such as Puccinia xanthii (Zhao et al. 2014) may mitigate the impacts of the invasive cocklebur in China.References:Revill, M. J. W., et al. 2005. J. Exp. Bot. 56:2477. https://doi.org/10.1093/jxb/eri240 Crossref, ISI, Google ScholarWu, Z. Y. 1979. Page 144 in: Flora of China vol. 64(1). Science Press, Beijing. Google ScholarYin, L. P., et al. 2012. GB/T 28085-2011. Standards Press of China, Beijing. Google ScholarZhao, Y. Z., et al. 2014. Plant Dis. 98:1582. https://doi.org/10.1094/PDIS-03-14-0277-PDN Link, ISI, Google ScholarZhao, Y. Z., et al. 2015. Plant Dis. 99:1285. https://doi.org/10.1094/PDIS-01-15-0004-PDN Link, Google ScholarFunding: Funding was provided by National Key R&D Program of China (grant no. 2017YFC1200101) and National Natural Science Foundation of China (grant nos. 31470575 and 31670545).DetailsFiguresLiterature CitedRelated Vol. 103, No. 3 March 2019SubscribeISSN:0191-2917e-ISSN:1943-7692 Metrics Article History Issue Date: 6 Mar 2019Published: 10 Jan 2019First Look: 26 Sep 2018Accepted: 24 Sep 2018 Pages: 591-591 Information© 2019 The American Phytopathological SocietyFundingNational Key R&D Program of ChinaGrant/Award Number: 2017YFC1200101National Natural Science Foundation of ChinaGrant/Award Number: 31470575Grant/Award Number: 31670545Cited byThe native stem holoparasitic Cuscuta japonica suppresses the invasive plant Ambrosia trifida and related mechanisms in different light conditions in northeast China23 September 2022 | Frontiers in Plant Science, Vol. 13First Report of Dodder (Cuscuta australis) Parasitizing the Invasive Jerusalem Artichoke (Helianthus tuberosus) in ChinaY. Ding, W.-W. Feng, W.-B. Wang, B. Qu, Y. Liang, H. Wang, J. Wang, and Z.-Y. Li3 May 2019 | Plant Disease, Vol. 103, No. 7
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,001 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,001 |
| Bibliométrie | 0,001 | 0,001 |
| Études des sciences et des technologies | 0,001 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,001 |
| Intégrité de la recherche | 0,001 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,003 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».