Disease and pest resistance in grains of sorghum and millets

Chandrashekar, A. and Satyanarayana, K.V. (2006) Disease and pest resistance in grains of sorghum and millets. Journal of Cereal Science, 44 (3). pp. 287-304.

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Abstract

In this review available information on the mechanisms of resistance to insect pests and fungal pathogens in sorghum and millets is discussed. The primary source of resistance lies in the chemical and physical make up of the grain. Phenolic compounds such as ferulic acid and tannins present in some sorghums are potent inhibitors of pests and pathogens. Grain hardness is a major deterrent to infection and infestation in low tannin grains. The prolamins, the grain storage proteins of sorghum, are organized into protein bodies and provide a physical and a nutritional barrier since they are resistant to digestion by insect and fungal proteases. A plethora of proteins that belong to the ‘pathogenesis related protein’ group are distributed in various parts of the grain. Some of them are located in protein bodies. Notwithstanding, sorghum is still susceptible to insect pests and fungal pathogens. An understanding of the natural mechanisms of resistance in the grain is paramount for the development of durable resistance against pests and pathogens. The pyramiding of resistance genes and the development of transgenic lines based on this understanding are two sources of hope for the future protection of sorghum and millets.

Item Type: Article
Uncontrolled Keywords: Sorghum; Millets; PR proteins; Antifungal proteins; Insecticidal proteins; Phtyoalexins; Polyphenols; Tannins; Development of resistance; Grain hardness
Author Affiliation: Plant Cell Biotechnology Department, Central Food Technological Research Institute (CFTRI), Mysore, Karnataka, 570020, India
Subjects: Plant Protection
Divisions: Sorghum
Depositing User: Mr T L Gautham
Date Deposited: 27 Dec 2017 04:05
Last Modified: 27 Dec 2017 04:05
URI: http://eprints.icrisat.ac.in/id/eprint/15279

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