Viruses Affecting Tropical and Subtropical Crops : Biology, Diversity, Management / Gustavo Fermin, Jeanmarie Verchot, Abdolbaset Azizi and Paula Tennant -- Banana Bunchy Top / Niyongere C鈋lestin, Aman Bonaventure Omondi and Guy Blomme -- Wheat Dwarf / Isabelle Abt and Emmanuel Jacquot -- Cassava Brown Streak / James P. Legg, P. Lava Kumar and Edward E. Kanju -- Cassava Mosaic / Olufemi J. Alabi, Rabson M. Mulenga and James P. Legg -- Cucumber Mosaic / Masarapu Hema, Pothur Sreenivasulu and P. Lava Kumar -- Potato Mosaic and Tuber Necrosis / Mohamad Chikh-Ali and Alexander V. Karasev -- Soybean Mosaic / Masarapu Hema, Basavaprabhu L. Patil, V. Celia Chalam and P. Lava Kumar -- Yam Mosaic / Angela O. Eni -- Sugarcane Mosaic / Laura Silva-Rosales, Ricardo I. Alcal鈇-Brise鋘o and Fulgencio Espejel -- Papaya Ringspot / Gustavo Fermin, Melaine Randle and Paula Tennant -- Tomato Spotted Wilt / Tsung-Chi Chen and Fuh-Jyh Jan -- Tomato Yellow Leaf Curl / Cindy-Leigh Hamilton, Sudeshna Mazumdar-Leighton, Icolyn Amarakoon and Marcia Roye -- Tristeza / Latanya C. Fisher, Paula Tennant and Vicente J. Febres -- Rice Tungro / Indranil Dasgupta -- Sweet Potato Virus Disease / Augustine Gubba and Benice J. Sivparsad -- Mealybug Wilt Disease/ Cherie Gambley and John Thomas -- Viruses Affecting Tropical and Subtropical Crops : Future Perspectives / Gustavo Fermin and Paula Tennant.