Transmission, survival and disease cycle of Colletotrichum capsici f. sp. cyamopsicola cuasing anthracnose of guar

Journal of PhytopathologyVolume 94, Issue 2 p. 112-118 Ultrastructure of Festuca gigantea with Rhabdovirus-like Particles T. Lundsgaard, Corresponding Author T. Lundsgaard Department of Plant Pathology, The Royal Veterinary and Agricultural University, Copenhagen, DenmarkAuthors' addresses: T. Lundsgaard, Department of Plant Pathology, The Royal Veterinary and Agricultural University, Thorvaldsensvej 40, DK-1871 Copenhagen V (Denmark). S. E. Albrechtsen, Danish Government Institute of Seed Pathology for Developing Countries, Ryvangs allé 78, DK-2900 Hellerup, Copenhagen (Denmark).Search for more papers by this authorS. E. Albrechtsen, Corresponding Author S. E. Albrechtsen Department of Plant Pathology, The Royal Veterinary and Agricultural University, Copenhagen, DenmarkAuthors' addresses: T. Lundsgaard, Department of Plant Pathology, The Royal Veterinary and Agricultural University, Thorvaldsensvej 40, DK-1871 Copenhagen V (Denmark). S. E. Albrechtsen, Danish Government Institute of Seed Pathology for Developing Countries, Ryvangs allé 78, DK-2900 Hellerup, Copenhagen (Denmark).Search for more papers by this author T. Lundsgaard, Corresponding Author T. Lundsgaard Department of Plant Pathology, The Royal Veterinary and Agricultural University, Copenhagen, DenmarkAuthors' addresses: T. Lundsgaard, Department of Plant Pathology, The Royal Veterinary and Agricultural University, Thorvaldsensvej 40, DK-1871 Copenhagen V (Denmark). S. E. Albrechtsen, Danish Government Institute of Seed Pathology for Developing Countries, Ryvangs allé 78, DK-2900 Hellerup, Copenhagen (Denmark).Search for more papers by this authorS. E. Albrechtsen, Corresponding Author S. E. Albrechtsen Department of Plant Pathology, The Royal Veterinary and Agricultural University, Copenhagen, DenmarkAuthors' addresses: T. Lundsgaard, Department of Plant Pathology, The Royal Veterinary and Agricultural University, Thorvaldsensvej 40, DK-1871 Copenhagen V (Denmark). S. E. Albrechtsen, Danish Government Institute of Seed Pathology for Developing Countries, Ryvangs allé 78, DK-2900 Hellerup, Copenhagen (Denmark).Search for more papers by this author First published: February 1979 https://doi.org/10.1111/j.1439-0434.1979.tb01541.xCitations: 3 With 5 figures AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Citing Literature Volume94, Issue2February 1979Pages 112-118 RelatedInformation

Chilli (Capsicum annum L.) is a vital vegetable and spice crop from the Solanaceae family, renowned for its culinary and medicinal uses. The most important disease observed on chilli is anthracnose (Colletotrichum capsici). Diseased lesions produce pink to orange conidial masses. The fruit initially shows water-soaked patches. Isolation, cultural and morphological characteristics of test pathogen were studied during 2022-24 at Department of Plant Pathology and Microbiology section, College of Agriculture, Pune-05. Microscopic examination of fruit sections shows the presence of sickle-shaped conidia.Fungi from infected chilli fruit section was isolated using the tissue isolation method. The pathogen was then purified through hyphal tip isolation, followed by periodic sub-culturing on PDA medium using the single-spore isolation technique. A detailed analysis, incorporating symptomatology, microscopic observation and assessments of morphological and cultural characteristics, identified the fungal pathogen as Colletotrichum capsici, in alignment with descriptions from existing literature. The mycelium of C. capsici exhibited a white to grey colouration with smooth edges and showed septate and branched formations. The conidia, measuring 16 to 25 µm in length and 3.6 to 4.5 µm in width, were single-celled, hyalineand falcate, with a sharp apex and a narrow, truncated base, resembling the shape of a sickle. C. capsici growth on various media, with PDA showing the highest radial growth and significant differences in colony morphology and pigmentation across media.

Aims: To study the cultural, morphological and pathogenic variability existing among the pathogen isolates of Colletotrichum capsici, inciting anthracnose and fruit rot of chilli in Kerala. Study Design: Completely randomized design (CRD). Place and Duration of Study: Department of Plant Pathology, College of Agriculture (Kerala Agricultural University), Vellayani, Thiruvananthapuram during 2018-2019. Methodology: A survey was conducted in the five agro-climatic zones (ACZs) of Kerala viz., Northern zone, Central zone, Special problem zone, High range zone and Southern zone to assess the incidence and severity of anthracnose disease. The various symptoms in the surveyed locations were also noted. Pathogen isolates were grown in PDA medium in the laboratory and colony characters (colour and mycelial growth rate of pathogen colonies) were observed. Also, the morphological characters viz., mycelial width, shape and size of conidia, acervular diameter, number and size of setae, appressorial size were recorded. Results: Maximum anthracnose incidence of 90 per cent and severity of 52.60 per cent were noticed at Regional Agricultural Research Station (RARS), Pilicode (Northern zone). Characteristic leaf spot, fruit rot and die-back symptoms were observed in the survey locations. Pathogen colonies showed different shades of white, off-white to grey turning brown or black with regular or irregular margins and concentric rings of black acervuli in the potato dextrose agar (PDA) medium. The diameter of growth of C. capsici isolates ranged from 7.20 to 8.60 cm at 7 days after incubation. All the C. capsici isolates initiated hyaline mycelium having a width of 1.73 - 2.36 µm and produced numerous sickle shaped conidia with a size range of 19.42 - 20.46 µm × 2.16 - 3.09 µm. Black coloured, circular or ellipsoidal acervuli (122.14 - 189.08 µm dia.) had 20 – 46 setae of length 74.13 to 107.30 µm. Also, brown or black appressoria of size 8.64 - 12.64 µm × 5.54 - 7.84 µm were formed in slide culture. Cc3 from College of Agriculture, Vellanikkara was obtained as the most virulent isolate producing a lesion size of 1.13 cm and PDI of 45.33 in the artificially inoculated chilli fruits (var. Vellayani Athulya) at 5 days after inoculation. Conclusion: All the nine C. capsici isolates exhibited variability in their cultural, morphological and pathogenic characteristics. Variability in phytopathogenic fungi helps in identifying novel and sustainable control methods to tackle the diseases incited by them. Understanding pathogen variability provides new insights for developing effective disease management methods. This will help in promoting sustainable agriculture and preventing severe crop losses.

Journal of PhytopathologyVolume 105, Issue 2 p. 155-160 Survival of the Brinjal Wilt Pathogen Pseudomonas solanacearum var. asiaticum in Naturally and Artificially Infected Soils K. Nayar, K. Nayar Department of Plant Pathology, College of Agriculture, Vellayani, Trivandrum, Kerala State (India).Search for more papers by this authorJ. Mathew, J. Mathew Department of Plant Pathology, College of Agriculture, Vellayani, Trivandrum, Kerala State (India).Search for more papers by this author K. Nayar, K. Nayar Department of Plant Pathology, College of Agriculture, Vellayani, Trivandrum, Kerala State (India).Search for more papers by this authorJ. Mathew, J. Mathew Department of Plant Pathology, College of Agriculture, Vellayani, Trivandrum, Kerala State (India).Search for more papers by this author First published: October 1982 https://doi.org/10.1111/j.1439-0434.1982.tb00672.x With one figure AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Volume105, Issue2October 1982Pages 155-160 RelatedInformation

Endophytes are microbes that live in plant tissues without causing any damage to the host plants. The present study aimed to isolate and identify fungal endophytes associated with healthy chilli (Capsicum annuum L.) plants. Healthy plants were collected from the experimental field of the Department of Plant Pathology, College of Agriculture, Latur. Plant tissues (roots, stems, and leaves) were surface sterilized to eliminate surface microorganisms and plated on Potato Dextrose Agar (PDA) for fungal growth. A total of ten fungal endophytes were successfully isolated five from roots two from stems and three from leaves. Morphological and cultural characteristics such as colony color, texture, growth pattern, and microscopic features including conidial structure, shape, and septation were used for identification with reference to standard mycological keys. The identified fungal endophytes included Trichoderma harzianum, Rhizoctonia solani, Fusarium oxysporum, Fusarium solani, Macrophomina phaseolina, Aspergillus flavus, Aspergillus niger, Alternaria solani, Rhizopus sp. and Colletotrichum capsici. The diversity of these endophytes tests a complex microbial community within chilli tissues that may contribute to plant health and resilience. Fungi isolated as endophytes from chilli (Cv. Pusa Jawala) were tested in order to ascertain whether they are capable of causing disease symptoms in healthy chilli stem, root and leaves. The pathogenicity test of fungal endophytes was carried out by pin prick method (for stem endophytes), spore suspension method (for leaf endophytes), root or soil drenching method (for root endophytes). No fungal species of endophytic fungi were able to cause any diseased symptoms on chilli plant and were observed to remain healthy.

Relationship of Phytoalexin Accumulation to Local and Systemic Protection of Bean against Anthracnose¹⁾

Acta Medica ScandinavicaVolume 116, Issue 3-4 p. 382-395 The Connection between Plasma Cells and the Occurrence of Hyperglobulinemia in Horses and Cattle.1 Further Investigation on Hyperglobulinemia III. JENS BING, JENS BING Copenhagen University Institute of General Pathology (Chief: Professor K. A. Jensen, M. D.) and The Royal Veterinary and Agricultural College, Department of Special Pathology (Chief: Professor H. C. Bendixen)Search for more papers by this authorN. O. CHRISTENSEN, N. O. CHRISTENSEN Copenhagen University Institute of General Pathology (Chief: Professor K. A. Jensen, M. D.) and The Royal Veterinary and Agricultural College, Department of Special Pathology (Chief: Professor H. C. Bendixen)Search for more papers by this author JENS BING, JENS BING Copenhagen University Institute of General Pathology (Chief: Professor K. A. Jensen, M. D.) and The Royal Veterinary and Agricultural College, Department of Special Pathology (Chief: Professor H. C. Bendixen)Search for more papers by this authorN. O. CHRISTENSEN, N. O. CHRISTENSEN Copenhagen University Institute of General Pathology (Chief: Professor K. A. Jensen, M. D.) and The Royal Veterinary and Agricultural College, Department of Special Pathology (Chief: Professor H. C. Bendixen)Search for more papers by this author First published: January/December 1944 https://doi.org/10.1111/j.0954-6820.1944.tb11940.xCitations: 6 1 This work has been performed with the aid of grants from His Majesty King Christian X foundation and the P. A. Brandt foundation. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Citing Literature Volume116, Issue3-4January/December 1944Pages 382-395 RelatedInformation

The Canadian Phytopathological Society Annual Meeting, Waterton Lakes National Park, Alberta, 2002

Journal of PhytopathologyVolume 62, Issue 1 p. 21-60 Dutch Elm Disease Recurrence and Recovery in American Elm Walter M. Banfield, Walter M. Banfield Department of Plant Pathology, College of Agriculture, University of Massachusetts, Amherst in cooperation with the United States Department of Agriculture 1 2Search for more papers by this author Walter M. Banfield, Walter M. Banfield Department of Plant Pathology, College of Agriculture, University of Massachusetts, Amherst in cooperation with the United States Department of Agriculture 1 2Search for more papers by this author First published: May 1968 https://doi.org/10.1111/j.1439-0434.1968.tb02345.xCitations: 40 With 35 figures Approved for publication cooperatively by the Massachusetts Agricultural Experiment Station and the United States Department of Agriculture. This work was part of the research program conducted by the Division of Forest Pathology, Bureau of Plant Industry, Soils, and Agricultural Engineering, U. S. Department of Agriculture at its field latboratory in Morrison, New Jersey, during the period 1938 to 1942. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Citing Literature Volume62, Issue1May 1968Pages 21-60 RelatedInformation

American Journal of BotanyVolume 17, Issue 1 p. 1-18 Article BUNCHY-TOP OF ABACÁ OR MANILA HEMP I. A STUDY OF THE CAUSE OF THE DISEASE AND ITS METHOD OF TRANSMISSION† Gerardo Offimaria Ocfemia, Gerardo Offimaria Ocfemia Department of Plant Pathology, College of Agriculture, Los Baños, Laguna, PhilippineSearch for more papers by this author Gerardo Offimaria Ocfemia, Gerardo Offimaria Ocfemia Department of Plant Pathology, College of Agriculture, Los Baños, Laguna, PhilippineSearch for more papers by this author First published: 01 January 1930 https://doi.org/10.1002/j.1537-2197.1930.tb09529.xCitations: 4 †Contribution from the Experiment Station of the College of Agriculture, Los Baños, Laguna, Philippine Islands. Published with the approval of the Director. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Citing Literature Volume17, Issue1January 1930Pages 1-18 RelatedInformation

Aims: An experiment was carried out to know the bio efficacy of ten bio agents against Sclerotium rolfsii viz, Bacillus subtilis, Pseudomonas fluorescens, Bacillus megaterium, Bacillus velenzensis,Trichoderma longibrachiatum, Trichoderma hamatum, Trichoderma harzianum, Trichoderma afroharzianum,Trichoderma asperelloides, Trichoderma asperellum. Study Design: The experiment was carried out in Completely Randomised Design with three replications. Place and Duration of Study: During 2023-2024 at Department of Plant Pathology, College of Agriculture, Shivamogga. Methodology: The research utilized 10 different bioagents sourced from the Department of Plant Pathology at the College of Agriculture in Shimoga. Results: Statistically difference observed among the bio-agents evaluated with respect to per cent inhibition of mycelia growth of S. rolfsii. Among the fungal bioagents, the highest per cent inhibition of mycelial growth was observed in T. longibrachiatum (55.43%). Among bacterial bio-agents, Bacillus subtilis showed maximum inhibition (42.35 %). Conclusion: This study indicates that fungal bioagents are more effective than bacterial bioagents in controlling the growth of pathogen.

Indian mustard, Brassica juncea belong to Brassicaceae and Centre of origin Mideterian. Sclerotinia stem rot/ blight caused by Sclerotinia sclerotiorum is one of the most important fungal diseases in rapeseed and other crops in the world. The present study was undertaken to access the forty seven germplasm/varieties to find out the resistance against S. sclerotiorum under inoculated condition. The reaction of forty-seven germplasm was evaluated in randomized complete block design with thrice replications at the experimental field, Department of Plant Pathology, College of Agriculture, Gwalior during Rabi season 2014-15 and laboratory work was done in the Department of Plant Pathology, College of Agriculture, Gwalior (M.P.). Observations for severity of stem rot on main stem were recorded after 120 days of sowing using 0 - 4 scale. (Assessment scale 0-4 where 0 = no disease (resistance), 1 = less than half stem girdled (moderate resistance), 2 = more than half stem girdled (susceptible), 3 = whole stem girdled (moderate susceptible), 4 = plant dead (highly suscepitble). Forty-seven germplasm/varieties were evaluated for their reaction against Sclerotinia blight (Sclerotinia sclerotiorum). Out of forty seven germplasm / varieties, tested two Cultivar SBG-14-5 and SBG-14- 6 gave highly resistance reactions, while twenty six varieties are found resistant SBG-14-2, SBG-14-3, SBG-14-4, SBG-14-7, SBG-14-8, SBG-14-9, SBG-14-10, SBG-14-11, SBG-14-13, SBG14-15, SBG-14-17, SBG-14-18, SBG-14-23, SBG-14-27, SBG-14-28, SBG-14-30, SBG-14-31, SBG-14-32, SBG-14-33, SBG-14-34, SBG-14-35, SBG-14-36, SBG- 14-41, SBG-14-42, NDNSR-14-76, NDNSR-14-77, twelve varieties are found susceptible SBG-14-1, SBG-14-12, SBG- 14-14, SBG-14-16, SBG-14-21, SBG-14-22, SBG-14-24, SBG-14-26, SBG-14-29, SBG-14-37, SBG-14-39, SBG-14-40 and seven varieties SBG-14-19, SBG-14-20, SBG-14-25, SBG-14-38, Varuna, Rohini and BIOYSR were found highly susceptible against Sclerotinia blight (Sclerotinia sclerotiorum).

Chilli (Capsicum annuum Linn.) is an important extensively grown spice crop. It belongs to the family Solanaceae. Approximately 20-27 species of chilli are found, out of which five are domesticated viz., C. annuum, C. baccatum, C. chinense, C. frutescens, and C. pubescens in different parts of the world. Chilli crop suffers from various diseases in which anthracnose caused by Colletotrichum capsici is a very serious one, causes huge yield losses in India. Severely infected fruits look straw colour and bear numerous acervuli in concentric rings. Around 27℃ temperature, 80% relative humidity and soil pH 5-6 promote infection and disease progress. The average disease incidence level ranges between 66 and 84% which results in yield loss upto 12-50% This investigation was carried out at the Main Experiment Station Vegetable Science and Department of Plant Pathology, Acharya Narendra Deva University of Agriculture & Technology Kumarganj, Ayodhya (U.P) during the year 2021 -2022. Twenty genotypes of chilli were screened and none one genotypes are found resistant, nine genotypes namely, Mahycojalna, Arkalohit, Phulemukta, Arkaharita, Madhurima, Classica 152, Arkameghna, Sonakshi 44 and Divyajyoti were found moderately resistant and rest of the genotype were susceptible and highly susceptible.

American Journal of BotanyVolume 40, Issue 5 p. 332-335 Article PREPARATION OF BOTANICAL MODELS AND LANTERN SLIDES FROM SHEET PLASTIC S. N. Postlethwait, S. N. Postlethwait Department of Botany and Plant Pathology, Purdue University, Lafayette, IndianaSearch for more papers by this authorG. B. Cummins, G. B. Cummins Department of Botany and Plant Pathology, Purdue University, Lafayette, IndianaSearch for more papers by this authorJ. H. Lefforge, J. H. Lefforge Department of Botany and Plant Pathology, Purdue University, Lafayette, IndianaSearch for more papers by this authorG. A. Gries, G. A. Gries Department of Botany and Plant Pathology, Purdue University, Lafayette, IndianaSearch for more papers by this authorForest Stearns, Forest Stearns Department of Botany and Plant Pathology, Purdue University, Lafayette, IndianaSearch for more papers by this author S. N. Postlethwait, S. N. Postlethwait Department of Botany and Plant Pathology, Purdue University, Lafayette, IndianaSearch for more papers by this authorG. B. Cummins, G. B. Cummins Department of Botany and Plant Pathology, Purdue University, Lafayette, IndianaSearch for more papers by this authorJ. H. Lefforge, J. H. Lefforge Department of Botany and Plant Pathology, Purdue University, Lafayette, IndianaSearch for more papers by this authorG. A. Gries, G. A. Gries Department of Botany and Plant Pathology, Purdue University, Lafayette, IndianaSearch for more papers by this authorForest Stearns, Forest Stearns Department of Botany and Plant Pathology, Purdue University, Lafayette, IndianaSearch for more papers by this author First published: 01 May 1953 https://doi.org/10.1002/j.1537-2197.1953.tb06486.xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Volume40, Issue5May 1953Pages 332-335 RelatedInformation

Abstracts of papers presented at the annual meeting of the Canadian Phytopathological Society McGill University, Montreal 9-13 July 1988