TopDB

Disease

Leaf Necrosis:

Disease ID : ToPDB_DD047

Summary :

Introduction : Leaf necrosis disease occasionally occurs in greenhouse plants allowed to grow too soft or luxuriant. Caused by virus.

Pathogen cause : Potato virus Y

Host distribution : Lycopersicon esculentum

Sign and Symptoms:

Newly infected plants exhibit dark brown dead areas in mature leaflets - especially the terminal one; young leaves develop chlorosis around veins; new growth after infection appears slightly distorted, faintly mottled with leaves and petioles curling downward; stems are streaked purple; plants are stunted and poor yielding with no fruit symptoms.

Etiology:

Vectored by aphids from weed hosts.The disease does not appear to spread within the crop, but much of its biology is not well understood.

Gene(s) Resposible for Disease:

Gene ID :

Control:

Biocontrol: Chitosan

Chemical control: Buprufezin and Soap Solution

Bibliography :

Biocontrol of tomato leaf curl virus (ToLCV) in tomato with chitosan supplemented formulations of Pseudomonas sp. under field conditions , Mishra S., Jagadeesh K.S., Krishnara P.U.J. and Prem S., Australian Journal Of Crop Science , 2014 , 8(3):347-355.

A worldwide survey of tomato yellow leaf curl viruses, Czosnek H. and Laterrot H., Archives of Virology, 1997 , 142(7):1391-406. PMID: 9267451.

Tomato diseases - Hydro-Gardens, Mckeen C.D.and Jarvis W.R. , Agriculture Canada Publication , 2013 ,75(1): 37–114.

Inactivation of Tobacco mosaic virus in soil by Pseudomonas putida A3-m strain to prevent virus mosaic disease, Yang J., Guo C., Zhai X., Shen L., Qian Y. and Wang F., African Journal of Microbiology Research , 2012 ,6(33):6300-6307.