title: Biology and management of sugarcane yellow leaf virus: an historical overview.
abstract: Sugarcane yellow leaf virus (SCYLV) is one of the most widespread viruses causing disease in sugarcane worldwide. The virus has been responsible for drastic economic losses in most sugarcane-growing regions and remains a major concern for sugarcane breeders. Infection with SCYLV results in intense yellowing of the midrib, which extends to the leaf blade, followed by tissue necrosis from the leaf tip towards the leaf base. Such symptomatic leaves are usually characterized by increased respiration, reduced photosynthesis, a change in the ratio of hexose to sucrose, and an increase in starch content. SCYLV infection affects carbon assimilation and metabolism in sugarcane, resulting in stunted plants in severe cases. SCYLV is mainly propagated by planting cuttings from infected stalks. Phylogenetic analysis has confirmed the worldwide distribution of at least eight SCYLV genotypes (BRA, CHN1, CHN3, CUB, HAW, IND, PER, and REU). Evidence of recombination has been found in the SCYLV genome, which contains potential recombination signals in ORF1/2 and ORF5. This shows that recombination plays an important role in the evolution of SCYLV.
authors.affiliation: Biochemistry Department, Faculty of Agriculture, Zagazig University, 44519, Zagazig, Egypt. aelsayed@zu.edu.eg.|Everglades Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, 3200 East Palm Beach Road, Belle Glade, FL, 33430-4702, USA. aelsayed@zu.edu.eg.
authors.forename: Abdelaleim Ismail
authors.initials: AI
authors.lastname: ElSayed
authors.affiliation: Plant Physiology, University Bayreuth, 95440, Bayreuth, Germany.
authors.forename: Ewald
authors.initials: E
authors.lastname: Komor
authors.affiliation: Institut de l'Olivier, B.P. 14, 4061, Sousse Ibn-khaldoun, Tunisia.
authors.forename: Moncef
authors.initials: M
authors.lastname: Boulila
authors.affiliation: Division of Crop Protection, Sugarcane Breeding Institute, Indian Council of Agricultural Research, Coimbatore, 641007, India.
authors.forename: Rasappa
authors.initials: R
authors.lastname: Viswanathan
authors.affiliation: Everglades Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, 3200 East Palm Beach Road, Belle Glade, FL, 33430-4702, USA.
authors.forename: Dennis C
authors.initials: DC
authors.lastname: Odero
mesh_terms: D000818:Animals; D001042:Aphids / Q000821:virology; D049673:History, 20th Century; D049674:History, 21st Century; D052679:Luteoviridae / Q000145:classification / Q000235:genetics / Q000302:isolation & purification / Q000502:physiology*; D010802:Phylogeny; D010935:Plant Diseases / Q000266:history / Q000517:prevention & control / Q000821:virology*; D031786:Saccharum / Q000821:virology*