Characterization of Colletotrichum lindemuthianum races infecting dry edible bean in North Dakota

Figures & data

Table 1. The 12 differential lines used for race identification with the corresponding binary numbers, resistance genes and reactions to Colletotrichum lindemuthianum races 9, 72 and 73.

Differential cultivar	Binary no.^a	Resistance gene^b	Gene pool^c	Races
				9	72	73
Michelite	1	Co-11	MA	S	R	S
MDRK	2	Co-1	A	R	R	R
Perry Marrow	4	Co-1^3	A	R	R	R
Cornell 49-242	8	Co-2	MA	S	S	S
Widusa	16	Co-1^5	A	R	R	R
Kaboon	32	Co-1^2	A	R	R	R
Mexico 222	64	Co-3	MA	R	S	S
PI 207262	128	Co-3^3, Co-4^3	MA	R	R	R
TO	256	Co-4	MA	R	R	R
TU	512	Co-5	MA	R	R	R
AB 136	1024	Co-5, Co-6, co-8	MA	R	R	R
G 2333	2048	Co-3^5, Co-4^2, Co-5^2,	MA	R	R	R

^aBinary number is equal to 2ⁿ, where n is equal to the place of the cultivar within the series (Melotto et al. 2000).

^bResistance genes are according to the Bean Improvement Cooperative (http://bic.css.msu.edu/_pdf/Bean_Genes_List_2014.pdf).

^cGene pool: MA represents Mesoamerican, A represents Andean.

Table 2. Number and races of Colletotrichum lindemuthianum isolates collected from dry bean fields in North Dakota in 2012 and 2014.

Year collected	County	Field no.	No. of isolates obtained	No. of isolates tested	Races identified
2012	Wells	1	13	3	9, 73(2)
2012	Wells	2	10	3	9, 72, 73
2012	Wells	3	13	3	73
2012	Wells	4	2	2	73
2012	Wells	5	24	3	73
2012	Wells	6	8	3	9, 73(2)
2012	Wells	7	13	3	73
2012	Wells	8	5	3	72, 73(2)
2012	Wells	9	2	2	73
2012	Foster^a	10	8	8	72, 73(7)
2014	Walsh^b	1	5	5	73
2014	Walsh	2	2	2	73
2014	Walsh	3	2	2	73
2014	Walsh	4	4	4	73
2014	Ramsey^b	5	5	5	73
2014	Ramsey	6	5	5	73
2014	Ramsey	7	5	5	73
2014	Ramsey	8	2	2	73
2014	Ramsey	9	5	5	73
2014	Ramsey	10	5	5	73
2014	Ramsey	11	5	5	73
2014	Ramsey	12	5	5	73
2014	Nelson^c	13	1	1	73
2014	Traill^d	14	2	2	73

^aEight C. lindmuthianum isolates were provided by M. Wunsch, NDSU Carrington Research and Extension Center.

^bPlant tissue was provided from Walsh and Ramsey counties by J. Jones, ADM Seedwest.

^cPlant tissue was provided from Nelson County by J. Prischmann, North Dakota State Seed Department.

^dPlant tissue was provided from Traill County by J. Osorno, NDSU Plant Sciences Department.

Melotto M, Balardin RS, Kelly JD. 2000. Host-pathogen interaction and variability of Colletotrichum lindemuthianum. In: Prusky D, Freeman S, Dickman MB, editors. Colletotrichum: host specificity, pathology, and host-pathogen interaction. St. Paul (MN): APS Press; p. 346–355.

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