Sugarcane yellow leaf virus

Family   : Luteoviridae
Genus    : Polerovirus
Acronym  : SCYLV

Introduction

Yellow leaf (YL) caused by Sugarcane yellow leaf virus (SCYLV) was first reported in India during 1999 and in recent years it has attained epidemic proportions, seriously affecting sugarcane production in the country. Several physiological parameters, photosynthetic rate (A), stomatal conductance (gs) and SPAD metre values were significantly reduced in cultivars severely infected with ScYLV. Virus-infected cultivars exhibited significant reduction in growth/yield parameters, viz. stalk height, stalk thickness and number of internodes. Plant growth reductions were found to be 42.9, 42.3 and 38.9% in susceptible cultivars CoPant 84211, Co 86032 and CoC 671, respectively. In addition to reduction in stalk weight, height and girth, YL disease also reduced juice yield in the affected canes up to 34.15%. Similarly, comparison of diseased (virus-infected) and virus-free plants derived through meristem culture also revealed a drastic reduction in cane growth/physiological parameters and juice yield due to virus infection.

Major Diseases

Yellow leaf disease

Geographical Distribution

All sugarcane growing regions

Particle Morphology

Isometric particles

Transmission Method

By sugarcane aphid, Melanaphis sacchari in persistent manner.

Detection

ELISA, RT-PCR

Host Range and Symptomatology

Host	Symptoms
Sugarcane	Yellow leaf

References

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