Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

CABI Book Chapter

Virus diseases of tropical and subtropical crops.

Book cover for Virus diseases of tropical and subtropical crops.

Description

This book aims to provide readers with the latest information on important virus diseases of crops in tropical and subtropical countries and the envisaged directions into the future of plant virus control. The volume comprises 18 chapters. The first chapter covers general information on the impact of virus diseases, methods for estimating disease severity, recent data on host-virus interactions, s...

Chapter 5 (Page no: 56)

Cassava mosaic.

Although cassava shows resilience against a myriad of pests and diseases, including several of viral aetiology, two virus disease complexes, cassava brown streak disease and cassava mosaic disease (CMD), are the major yield-limiting biotic constraints to its production in sub-Sahara Africa. Subsequent studies have recorded the occurrence of many virus species, all of which belong to the genus Begomovirus (family Geminiviridae), in CMD-affected plants. This chapter presents the symptopms, causative viruses, epidemiology, economic impact, monitoring and management of CMD. The genome structure, function and diversity, host range, transmission, detection and distribution of the causal agent are also described. An integrated approach that takes into consideration 'traditional' versus 'novel', 'ancient' versus 'modern', and 'conventional' versus 'unconventional' solutions will hold better promise for a comprehensive ecologically friendly and economically sustainable CMD management effort in sub-Saharan Africa. In line with this, largely neglected components of the CMG-cassava pathosystem such as volunteer cassava plants and alternative hosts of CMGs, abundance of natural enemies of Bemisia tabaci and the use of transgenic resistance will need to form part of an overall CMD management strategy.

Other chapters from this book

Chapter: 1 (Page no: 1) Viruses affecting tropical and subtropical crops: biology, diversity, management. Author(s): Fermin, G., Verchot, J., Azizi, A., Tennant, P.
Chapter: 2 (Page no: 17) Banana bunchy top. Author(s): Célestin, N., Omondi, A. B., Blomme, G.
Chapter: 3 (Page no: 27) Wheat dwarf. Author(s): Abt, I., Jacquot, E.
Chapter: 4 (Page no: 42) Cassava brown streak. Author(s): Legg, J. P., Kumar, P. L., Kanju, E. E.
Chapter: 6 (Page no: 73) Cucumber mosaic. Author(s): Masarapu Hema, Pothur Sreenivasulu, Kumar, P. L.
Chapter: 7 (Page no: 94) Potato mosaic and tuber necrosis. Author(s): Chikh-Ali, M., Karasev, A. V.
Chapter: 8 (Page no: 108) Soybean mosaic. Author(s): Masarapu Hema, Patil, B. L., Chalam, V. C., Kumar, P. L.
Chapter: 9 (Page no: 121) Yam mosaic. Author(s): Eni, A. O.
Chapter: 10 (Page no: 131) Sugarcane mosaic. Author(s): Silva-Rosales, L., Alcalá-Briseño, R. I., Espejel, F.
Chapter: 11 (Page no: 144) Papaya ringspot. Author(s): Fermin, G., Randle, M., Tennant, P.
Chapter: 12 (Page no: 162) Tomato spotted wilt. Author(s): Chen TsungChi, Jan FuhJyh
Chapter: 13 (Page no: 177) Tomato yellow leaf curl. Author(s): Hamilton, C. L., Mazumdar-Leighton, S., Amarakoon, I., Roye, M.
Chapter: 14 (Page no: 189) Tristeza. Author(s): Fisher, L. C., Tennant, P., Febres, V. J.
Chapter: 15 (Page no: 202) Rice tungro. Author(s): Indranil Dasgupta
Chapter: 16 (Page no: 216) Sweet potato virus disease. Author(s): Gubba, A., Sivparsad, B. J.
Chapter: 17 (Page no: 228) Mealybug wilt disease. Author(s): Gambley, C., Thomas, J.
Chapter: 18 (Page no: 237) Viruses affecting tropical and subtropical crops: future perspectives. Author(s): Fermin, G., Tennant, P.