Citrange Stunt Virus Associated with Decline of Shamouti on Swingle Citrumelo Rootstock in South Africa

Marais, L. J.; Lee, R. F.

doi:10.1094/pd-70-892

Cited by 13 publications

(9 citation statements)

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“…The symptom expression in citrus indicator plants described in this study strongly suggests that CTLV is present in most of the citrus sampled in the LRGV of Texas. The CTLV symptoms reported here have been reported by workers elsewhere (7,8,12,20,22,33).…”

Section: Discussionsupporting

confidence: 88%

Further Studies on Citrus Tatter Leaf Virusin Texas

Herron¹,

Skaria²

2000

International Organization of Citrus Virologists Conference Proceedings (1957-2010)

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Twenty-five citrus samples from 16 sites in the Lower Rio Grande Valley and Corpus Christi areas of Texas were indexed for Citrus tatter leaf virus (CTLV). Sixteen samples gave characteristic CTLV symptoms when biologically indexed onto citrumelo or citrange indicators. Six of the samples could also be readily detected by ELISA using the original donor tissue with CTLV and Apple stem grooving virus (ASGV) ELISA. No tissue samples reacted with Citrus tristeza virus antibodies. Indexing on limited herbaceous indicators proved unreliable under our conditions. Four of the samples with distinct CTLV symptoms gave bud union browning on citrange as early as 12 mo after grafting. Five samples were further indexed on a range of citrus indicators in 1997, the type and extent of symptoms observed are described.

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Section: Discussionsupporting

confidence: 88%

Further Studies on Citrus Tatter Leaf Virusin Texas

Herron¹,

Skaria²

2000

International Organization of Citrus Virologists Conference Proceedings (1957-2010)

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“…The disease was subsequently found to be widespread in China and endemic in most Asian countries (Supplementary Figure S2) [88][89][90]. It also has been reported in all the citrus-producing states in the US, Australia [91] and South Africa [92]. CTLV led to severe decline which forced growers in China to substitute trifoliate orange rootstocks with the CTV-decline-tolerant Gou Tou orange, which later turned out to be susceptible to CTV stem pitting.…”

Section: Citrus Tatter Leaf Virus a Strain Of Apple Stem Grooving Virus (Capillovirus Betaflexiviridae)mentioning

confidence: 93%

Exotic and Emergent Citrus Viruses Relevant to the Mediterranean Region

2021

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Citrus production in the Mediterranean area is of considerable importance, in both cultural and economic terms, and the viability of the industry greatly depends on proper phytosanitary management. In this review, we focus on exotic and emerging dangerous citrus viruses that have still not been reported in the countries of the Mediterranean area, that are not yet regulated or that are restricted to certain small areas. We also discuss the contribution that old and new technologies may offer for valuable surveys aimed at promoting the adoption and sharing of better control measures and the production of pathogen-tested citrus trees and rootstocks.

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“…Tatter leaf has been reported in citrus from the USA, Japan, China, Taiwan, Korea, India, Brazil, Taiwan, Thailand, the Philippines, Australia and South Africa (Table 2 and Figure 1) and was associated with serious bud-union incompatibility in trees on trifoliate and trifoliate hybrid rootstocks in Japan (Miyakawa and Tsuji, 1988), China (Zhang et al, 1988;Ke and Wu, 1991), South Africa (Marais and Lee, 1987) and Texas (Herron and Skaria, 2000). Are detection and identification methods available for the pest?…”

Section: Pest Distribution Outside the Eumentioning

confidence: 99%

Pest categorisation of Tatter leaf virus

Jeger¹,

Bragard²,

Caffier³

et al. 2017

EFS2

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The EFSA Panel on Plant Health performed a pest categorisation of Citrus tatter leaf virus (CTLV) for the EU territory. This virus is the causal agent of tatter leaf and graft incompatibility in trifoliate orange (Poncirus trifoliata) and its hybrids. CTLV is now recognised as a synonym of Apple stem grooving virus (ASGV), the type Capillovirus species, for which efficient diagnostics are available. There are no known ASGV vectors. The virus is reported in citrus from many countries. In the EU, while ASGV is widely present on apple and pear, it has never been reported on citrus. Since the citrus plants for planting pathway is closed by existing legislation, the main pathway for entry is plants for planting of other host species. In the EU, the high prevalence of ASGV in non-citrus hosts, but its absence in citrus ones suggests that interspecific host transfers are rare. However, there are high uncertainties on the importance and specifics of such host change events. No limits to the establishment of ASGV are identified and spread is likely through the vegetative propagation and trade of infected hosts. Infection of sensitive citrus rootstocks leads to stunted growth and decline of the entire plant a few years after grafting. The rootstocks that are now widely used to prevent citrus tristeza decline are the most affected. Among the criteria evaluated by EFSA for an organism to qualify as a Union quarantine pest, ASGV does not meet the criterion of being absent from or under official control in the EU territory. ASGV satisfies all the criteria evaluated by EFSA to qualify as a Union regulated non-quarantine pest. The main uncertainties concern the possible unreported presence of ASGV in citrus in the EU, the existence and efficiency of interspecific host transfers and the existence of ASGV natural spread.

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Citrange Stunt Virus Associated with Decline of Shamouti on Swingle Citrumelo Rootstock in South Africa

Cited by 13 publications

References 0 publications

Further Studies on Citrus Tatter Leaf Virusin Texas

Further Studies on Citrus Tatter Leaf Virusin Texas

Exotic and Emergent Citrus Viruses Relevant to the Mediterranean Region

Pest categorisation of Tatter leaf virus

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