Association of Plant Color and Pericarp Color with Colonization of Grain by Members of Fusarium and Alternaria in Near-Isogenic Sorghum Lines

Plant Disease
Deanna L Funnell, Jeffrey F Pedersen

Abstract

White sorghum (Sorghum bicolor) grain from tan plants is more desirable for human or animal consumption. Colonization by Fusarium and Alternaria spp. was assessed for near-isogenic lines differing in wound response (purple or tan) and pericarp color (red or white) in field-grown grain and in greenhouse-grown plants. Seeds were screened on a semi-selective medium for Alternaria and Fusarium. Significantly fewer fungal colonies were obtained from tan plants with white seed, and fewer numbers of Alternaria colonies were obtained from white seed, regardless of plant color, from an irrigated field, while there were no differences in fungal composition of seeds grown at a nonirrigated field. Screening of seed from the nonirrigated field on Fusarium semi-selective medium yielded fewer Fusarium isolations from seed grown on purple plants compared with seed from tan plants. When inoculated with Alternaria sp. and F. moniliforme, there can be no differences in lesion lengths on tan/white plants when compared with purple/red plants in most assays; in one assay, tan/white plants had smaller lesion lengths following inoculation with F. moniliforme. These results suggest that plants with white seeds were as resistant as plants with the red p...Continue Reading

References

Jun 1, 1986·Applied and Environmental Microbiology·S Andrews, J I Pitt
Oct 16, 2001·Journal of Agricultural and Food Chemistry·R D WaniskaG H Liang
May 12, 2004·International Journal of Food Microbiology·Barbara KosiakBirgitte Andersen
Jul 9, 2004·Journal of Agricultural and Food Chemistry·Joseph M AwikaRalph D Waniska
Aug 1, 1987·Proceedings of the National Academy of Sciences of the United States of America·R L NicholsonG Cadena-Gomez
Oct 24, 2008·Phytopathology·P A PaulL V Madden
Mar 1, 1981·Journal of Chemical Ecology·D L DreyerK C Jones

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Citations

Jun 10, 2010·Phytopathology·Deanna L Funnell-HarrisScott E Sattler
May 1, 2016·Plant Disease·Deanna L Funnell-HarrisMelinda K Yerka
Oct 1, 2014·Plant Disease·Deanna L Funnell-HarrisJeffrey F Pedersen

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