J Integr Plant Biol. ›› 2009, Vol. 51 ›› Issue (5): 476-488.DOI: 10.1111/j.1744-7909.2009.00817.x

• Plant-environmental Interactions • Previous Articles     Next Articles

The Role of Viral Infection in Inducing Variability in Virus-Free Progeny in Tomato

Liliana Marii* and Gheorghe Chiriac   

  1. Institute of Genetics and Plant Physiology, Academy of Sciences of Moldova, Chisinau, MD 2002, Republic Moldova
  • Received:2008-09-04 Accepted:2009-01-03 Published:2009-03-17
  • About author:
    *Author for correspondence Tel: +373 22 660 389; Fax: +373 22 556 180; E-mail: lilimaryi@gmail.com

Abstract:

The effect of virus-host interactions on subsequent generations is poorly understood. The evaluation of the effects of viral infection on inheritance of quantitative traits in the progeny of infected plants and elucidation of a possible relationship between chiasma frequency in the infected plants and variability of traits in the progeny were investigated. The current study involved genotypes of four intraspecific hybrids of tomato (Solanum lycopersicum L.), their parental forms and two additional cultivars. Used as infection were the tobacco mosaic virus (TMV) and potato virus X (PVX). The consequences of the effect of viral infection were evaluated based on chromosome pairing in diakinesis and/or by examining quantitative and qualitative traits in the progeny of the infected tomato plants. Tomato plants infected with TMV + PVX were found to differ in chiasma frequency per pollen mother cell or per bivalent. Deviations have been observed for genotypes of both F1 hybrids and cultivars. At the same time, differences in mean values of the traits under study have only been found for progeny populations (F2-F4) derived from virus-infected F1 hybrids, but not in the case of progeny of the infected cultivars. The rate of recombinants combining traits of both parents increased significantly (2.22–8.24 times) in progeny populations of hybrids infected with TMV + PVX. The above suggests that the observed effects could be the result of modification of recombination frequencies that can be manifested in heterozygous hybrids and make small contributions to variability in cases of ‘homozygous’ tomato genotypes (i.e. cultivars).

Marii L, Chiriac G (2009). The role of viral infection in inducing variability in virus-free progeny in tomato. J. Integr. Plant Biol. 51(5), 476-488.

Key words: chiasma, recombination, Solanum lycopersicum, traits variability, viral infection.

Editorial Office, Journal of Integrative Plant Biology, Institute of Botany, CAS
No. 20 Nanxincun, Xiangshan, Beijing 100093, China
Tel: +86 10 6283 6133 Fax: +86 10 8259 2636 E-mail: jipb@ibcas.ac.cn
Copyright © 2022 by the Institute of Botany, the Chinese Academy of Sciences
Online ISSN: 1744-7909 Print ISSN: 1672-9072 CN: 11-5067/Q
备案号:京ICP备16067583号-22