NDLI: Colonization of Potato Roots and Stolons by Colletotrichum coccodes from Tuberborne Inoculum

Content Provider	Springer Nature Link
Author	Ingram, Jason Johnson, Dennis A.
Copyright Year	2010
Abstract	The rate of colonization by Colletotrichum coccodes was quantified on roots and stolons of the potato cultivar Russet Burbank. Greenhouse grown plants arising from seed-tubers infected with C. coccodes were observed. The distance that C. coccodes colonized potato roots was measured from the seed tuber to the distal edge of microsclerotial development along the roots starting at 21 days after plant emergence and continued at 14 day intervals until crop death. Visual assessment of disease progress was confirmed by isolation from diseased and non-diseased tissues onto nutrient agar. Expansion of C. coccodes foci along the roots in two independent trials resulted in a linear growth model of 1 mm/day (Trial 1 P < 0.011, R $^{2}$ = 0.84; Trial 2 P < 0.007, R $^{2}$ = 0.87). Colonization radiated from the seed-tuber to form compact foci of infected tissue that was rotationally symmetrical; no secondary foci were observed. The results suggested that C. coccodes expanded linearly from an inoculum source and that for multiple disease foci to develop on a root system, multiple primary infections must occur from sclerotia in the soil.Se cuantificó el nivel de colonización por Colletotrichum coccodes en raíces y estolones del cultivar Russet Burbank de papa. Se observaron las plantas cultivadas en el invernadero que emergieron de la semilla tubérculo infectada con C. coccodes. Se midió la distancia en que C. coccodes colonizó a las raíces de papa desde el tubérculo semilla a la orilla distal del desarrollo del microesclerocio a lo largo de las raíces, empezando 21 días después de la emergencia de la planta y continuando a intervalos de 14 días hasta la muerte del cultivo. Se confirmó el análisis visual del progreso de la enfermedad mediante el aislamiento de los tejidos enfermos y sanos a agar nutritivo. La expansión del foci de C. coccodes a lo largo de la raíz en dos ensayos independientes dio como resultado un modelo de crecimiento lineal de 1 mm/día (ensayo 1, P < 0.011, R $^{2}$ = 0.84; Trial 2 P < 0.007, R $^{2}$ = 0.87). La colonización fue radial desde la semilla tubérculo para formar foci compactos de tejido infectado que fue rotacionalmente simétrico; no se observaron foci secundarios. Los resultados sugieren que C. coccodes se expandió linealmente desde una fuente de inoculo y que para que se desarrollen múltiples foci de la enfermedad en un sistema radical, se deben presentar infecciones múltiples primarias de los esclerocios en el suelo.
Starting Page	382
Ending Page	389
Page Count	8
File Format	PDF
ISSN	1099209X
Journal	American Potato Journal
Volume Number	87
Issue Number	4
e-ISSN	18749380
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-05-29
Publisher Institution	Potato Association of America
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Seedborne inoculum Black dot Plant Pathology Plant Breeding/Biotechnology Plant Genetics & Genomics Agriculture Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Plant Science Agronomy and Crop Science

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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